Gear Pair - Zycon - Industrial Directory of Manufacturers and … · 2011-09-20 · efficiency of KHK stock worm gear pair is given below as a reference. ... assembly, loading, ...
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Catalog Number of KHK Stock Gears 9(Example)
The Catalog Number for KHK stock gears is based on the simple formula listed below.Please order KHK gears by specifying the Catalog Numbers.
Table of ContentsSpecial Characteristics, Points of Caution
in Selecting and Using Worms, Worm Wheels ..... page 292
KWGDL Duplex Worms,
KWGDLS Duplex Worms Shafts,
AGDL Worm Wheels ............................................ page 310
KWG Ground Worm Shafts,
AGF Worm Wheels ............................................... page 314
SWG Ground Worms, AG Worm Wheels ............. page 320
SW Worms, BG.CG Worms Wheels ..................... page 328
SUW Worms, PG Plastic Worm Wheels ............... page 344
Worm Gear PairWorms
K WGDL 2 - R1Hand of Thread & Number ofStarts (Right hand, Single thread)
MaterialK SCM440S S45CSU SUS303
TypeW WormsWG Ground WormsWGDL Duplex Ground Worms
Worms
MaterialA CAC702(AℓBC2)B CAC406C(BC6) CAC502A(PBC2)C FC200P MC901
TypeG Worm GearsGDL Duplex Worm Gears
* ( ) indicates old JIS designation
Worms Wheels
Worm Wheels
A G 1.5 - 20 R2Hand of Thread & Number of Starts(Right hand, Double thread)
291
Module(2)
Type( Duplex Worm)
Material(SCM440)
Number of teeth(20)
Module(1.5)
Type( Worm Gears)
Material(CAC702)
WormGear Pair
Teeth inductionhardened 1
1
1
2
2
2
2
2
4
4
4
4
5
292
Available in Speed Reduction Ratios of 1/10 to 1/120 in Many Materials and Styles.
The simplest way to obtain a large speed reduction with high torque in a compact space is with worm gear drives. KHK stock worms and
worm wheels are available in modules 0.5~6 and in speed ratios of 1/10~1/120, made in a variety of materials and styles. We also offer stock
duplex worms and worm wheels with which you can obtain a very low backlash, high rotational precision system.
Catalog No.
KWGDL
KWGDLS
AGDL
KWG
AG NOTE 1
AGF NOTE 1
SWG
AG NOTE 1
SW
SUW
CG
BG
PG
2~4
2~4
2~4
0.5~6
0.5~1.5
2~6
1~6
1~6
0.8~6
1~3
1~6
0.8~6
1~3
Single thread
Single thread
1/20~1/60
Single thread~ Double thread
1/10~1/60
1/10~1/60
Single thread~ Triple thread
1/10~1/60
Single thread~ Double thread
Single thread~ Double thread
1/10~1/120
1/10~1/50
1/10~1/50
Ground
Ground
Cut
Ground
Cut
Cut
Ground
Cut
Cut(Thread rolled)
Cut
Cut
Cut
Cut
Duplex lead worms have slightly different leads and lead angles on the opposite face of the gear tooth. A range of backlash can be obtained by moving the worm axially. Worms have a high precision ground finish while worm wheels are made of abrasion-resistant Aluminum Bronze, making these the top-grade products. Worms come in bore type and shaft type styles.
Use of worm shafts eliminate the need to attach worms to shafts. Machining of bearing journal can be performed on the shafts. KWG2 or larger worm shafts have smaller pitch diameters than the comparable SWG worms, which allow more compact design with higher efficiency.
Superior strength and wear-resistance lead to compact designs with these gears. They have the same center distances as the more popular SW/CG series which permit substitution of these in place of SW/CG series for more demanding applications.
A large selection is available in these economical
and most popular series. Modules range from 0.8
to 6 and speed ratios from 1/10 to 1/120. Worm
wheels are also available in lightweight MC nylon
which can be used without lubrication.
SCM440
SCM440
CAC702(AlBC2)
SCM440
CAC702(AlBC2)
CAC702(AlBC2)
S45C
CAC702(AlBC2)
S45C
SUS303
FC200
CAC406C(BC6)CAC502A(PBC2)
MC901
Module No. of threadsor speed ratio
Material
( ) indicates old
JIS designation
Heat
treatment
Toothsurfacefinish
PrecisionKHK W 001KHK W 002
NOTE 2
Main Characteristics
NOTE 1: The material of cast hubs of AGF and AG worm wheels is FC200. AG worm wheels mate primarily with SWG worms. But, for Modules 0.8 or smaller, AG worm wheels mate with KWG worms. NOTE 2: KHK stock worms and worm wheels are produced to KHK’s own precision grades. See the “Precision of Worms and Worm Gears” in the “Selection Hints” section.
Type
Duple
x Wor
ms &
Wor
m W
heels
Wor
ms
& W
orm
Gea
rs
The following table lists the main features for easy selection.
Worm
Worm
Worm Wheel
Worm
Worm Wheel
Worm Wheel
Worm
Worm Wheel
Worm
Worm
Worm Wheel
Worm Wheel
Worm Wheel
Worm Gear Pair
Characteristics
■ Main Features of Types of Worm Gear Pair Offered
Thermal refining and teeth induction hardened
-
Thermal refining and teeth induction hardened
-
-
Teeth inductionhardened
-
-
-
-
-
-
293
100 Worm min-1
Worm min-1
Worm min-1
SWG1.0 -R1SWG1.5 -R1 SWG2.0 -R1 SWG2.5 -R1 SWG3.0 -R1 SWG4.0 -R1 SWG5.0 -R1SWG6.0 -R1
100 300 KWG0.5 -R1KWG0.8 -R1 KWG1.0 -R1 KWG1.5 -R1KWG2.0 -R1 KWG2.5 -R1 KWG3.0 -R1 KWG4.0 -R1KWG5.0 -R1 KWG6.0 -R1
KWG0.5 -R2KWG0.8 -R2KWG1.0 -R2 KWG1.5 -R2 KWG2.0 -R2KWG2.5 -R2 KWG3.0 -R2 KWG4.0 -R2
The efficiency of power transmission varies somewhat with the conditions of assembly and lubricant, but is generally 30~90% (excludes losses from bearings and churning of lubricants). The efficiency of KHK stock worm gear pair is given below as a reference.
■ Efficiency of KWGDL(S)/AGDL Worm Gear Pair (%) ■ Efficiency of SWG/AG Worm Gear Pair (%)
■ Efficiency of KWG/AGF Worm Gear Pair (%)
(min-1=Rotation of worm)
100
4042434343
4649515252
5255565859
5559616263
5962646566
6266676869
300 600 900 1200 1800 Catalog No.
KWGDL2.0 -R1KWGDL2.5 -R1 KWGDL3.0 -R1 KWGDL3.5 -R1 KWGDL4.0 -R1
36374042434347495354565960606366
6969
42424649515256585859636567687173
7475
46485255565963656365687172747778
7980
49525559616366686668717475777981
8283
51555962646669716870717678798183
8484
56596266676972747174777980818485
8586
300 600 900 1200 1800 Catalog No.
SWG1.0 -R2SWG1.5 -R2 SWG2.0 -R2 SWG2.5 -R2SWG3.0 -R2SWG4.0 -R2SWG5.0 -R2SWG6.0 -R2
SWG3.0 -R3 SWG4.0 -R3
31363637464646525354
4752535462626267
36424243535353596162
5258585968686973
39464648585859656769
5662636573737478
42494952616263697172
5965666875767681
44515155646566717374
6167687077787982
47545659676869747677
6470717480818185
600 900 1200 1800 Catalog No.
■ Efficiency of SW, SUW/CG, BG, PG Worm Gear Pair (%)
The efficiency is approximately as follows, depending on the
assembly, loading, lubrication and rotational speed:
Single thread 40~50%
Double thread 50~60%
Self-locking is defined as the inability of worm wheels to drive the worms. Factors affecting the self-locking feature include the materials of the worm and worm wheel, lead angle, precision of manufacture, types of bearings, lubricant, etc. Thus, it is not dependent simply on the lead angle. But, in general, self-locking will occur when the lead angle in a single thread worm is less than 4。. For systems requiring fail-safe prevention of back drive, we
recommend other braking mechanisms or one-way clutches.
KHK Technical Information
■ Efficiency of Worm Gear Drives and Their Self-Locking Feature
1. Efficiency of Worm Gear Pair
2. Self-Locking Feature of Worm Gear Pair
(min-1=Rotation of worm)
(min-1=Rotation of worm)
RH, singleRH, singleRH, doubleRH, singleRH, doubleRH, tripleRH, singleRH, doubleLH, singleLH, doubleRH, singleRH, double
294
Please select the most suitable products by carefully considering the characteristics of items and contents of the product tables. It is also important to read all applicable “CAUTION” notes shown below before the final selection. Use of catalog numbers when ordering will simplify and expedite the processing of your order.
■ The Maximum Allowable Sliding Speed Due to Heat
Worms and worm wheels have either right-hand or left-hand helix.
The same hand worms and worm wheels comprise sets. However,
the number of threads and whether they use normal module or
axial module system must also be matched. The table below shows
available combinations of KHK stock worms and worm wheels.
The gear strength values shown in the product pages were computed by assuming a certain application environment as shown below. Therefore, they should be used as reference only. We recommend that each user computes their own values by applying the actual usage conditions.
WormKWGDL(S)
KWG
SWG
SW
SUW
AGDL RH, single
AGF, AG0.5~AG1.5 RH, single
AGF, AG0.5~AG1.5 RH, double
AG RH, single
AG RH, double
AG RH, triple
CG, BG, PG RH, single
CG, BG, PG RH, double
CG, BG LH, single
CG, BG LH, double
CG, BG, PG RH, single
CG, BG, PG RH, doubleNOTE 1: Select the same module for both members.
■ The Helixes of Worms and Worm Wheels
Formula NOTE 2
Rotations of worm
Lubricant
Lubrication
Starting condition
Durability
Impact from motor
Impact from load
Allowable stress factor Sclim
Item KWGDL(S)/AGDL,KWG/AGF,SWG/AG SW/CG,SW/BG SUW/PG
Formula of worm gear’s strength (JGMA405-01)
600min-1
Lubricant for gears with proper viscosity and with anti-pressure additives
Oil bath
Starting torque less than 200% of rated torque. Less than 2 starts per hour
26000Hrs
Uniform load
Uniform load
0.67 0.42NOTE 2: The gear strength formula is based on JGMA (Japanese Gear Manufacturer’s Association)
specifications and “MC Nylon Technical Data” by Nippon Polypenco Limited. The units for the rotational speed (min-1) and the stress (kgf/mm2) are adjusted to the units needed in the formula.
Catalog No. Max. Sliding Speed (m/s) AGDLAGFAGBGCGPG
* 15* 15* 15* 5* 2.51 (no lubrication)
The maximum allowable sliding speed for each series of worm wheels is given below. Select the appropriate part by calculating the sliding speed.
Sliding speed υs (m/s) d : Worm pitch dia. n : Worm speed (min-1)γ : Worm nominal lead angle
Worm Gear Pair
Selection Hints
1. Caution in Selecting the Mating Gears
■Mating Worm Gear Selection Chart
2. Caution in Selecting Gears Based on Gear Strength
■ Calculation of Surface Durability ■ Calculation of Bending Strength
*JGMA405-01
Mating worm wheel NOTE 1
υs=dn
19100 cosγ
The Lewis formula
Allowable
bending
stress
1.15kgf/mm2
(40OC with no
lubricant)
RH single thread LH single thread
RH double thread LH double thread
Error
295
① There are various footnotes to the product pages under the headings of “CAUTION” and” NOTE”. Please consider them carefully when selecting these products.
② There may be slight differences in color or shape of products shown in the photographs from the actual products.
③ KHK reserves the right to make changes in specifications and dimensions without notice.
④KHK standard Worms and Worm Wheels are made for general commercial machinery. Please avoid using them for precision positioning applications.
⑤KHK is ready to produce and supply custom order products. When you require specific gears different from KHK Stock Gears please contact our distributor for quotation. Also, please refer to page 16 “KHK Custom Order Products”.
■ Precision Grades of Worms (KHK W 001) (Unit:μm)
Gra
de
Error over M0.4up to 1
over M1up to 1.6
over M1.6up to 2.5
over M2.5up to 4
over M4up to 6
1
2
3
4
Tooth profile error Lead error
Tooth profile errorLead error
Tooth profile errorLead error
Tooth profile errorLead error
87121516202030
129161823233032
1611202130274038
2013242537335046
2516292850377052
Module
Gra
de
4
1
2
3
5
Single pitch errorTooth-to-tooth errorTotal composite errorRunout errorSingle pitch errorTooth-to-tooth errorTotal composite errorRunout errorSingle pitch errorTooth-to-tooth errorTotal composite errorRunout errorSingle pitch errorTooth-to-tooth errorTotal composite errorRunout errorSingle pitch errorTooth-to-tooth errorTotal composite errorRunout error
56
2115
88
3021111243301517604321258660
66
2417
89
3324121347331719664724289466
77
2619
910372613155337192174532631
10574
78
30211012423015176042212583603035
12083
99
34241213483417196848242895683443
13595
67
2518
99
352512145035182070502529
10070
77
28191010392814155539192277552833
11077
88
31221112443116176244222687623139
12587
99
35251214503518207150252999713544
14099
1011412914165741202481572934
115814151
165115
77
2719
910382713155338192175532732
10575
78
30211012423015175942212583593035
12083
89
33231213463316186646232792663341
13092
910372613155237192174522631
105743747
150105
1112433015176043212585603038
120854353
170120
89
33231113463316186546232791653341
13091
910362513145136182072512530
100723645
145100
1011402814165740202481572833
115814050
160115
1113463216186446232791643240
130914657
185130
13155337182174532631
105743746
145105
5369
210145
910372613155237192174522631
105743746
150105
1011402814165740202481572834
115814051
160115
1113453216186345222690633239
125904556
180125
13145035182071502530
100703544
140100
5066
200140
14165740202480572934
115804050
160115
5775
230160
over m0.4 up to 1 over m1 up to 1.6 over m1.6 up to 2.5 over m2.5 up to 4 over m4 up to 6 Pitch diameter (mm)
■ Precision Grades of Worm Wheels (KHK W 002) (Unit:μm)
KHK Technical Information
3. Selecting Worms and Worm Wheels by Precision The precision standards of KHK stock worms and worm wheels are
established by us. The table below indicates the tolerance ranges for our products.
4. Other Points to Consider in the Selection Process
② Precision of worm wheels (KHK W 002)We have established standard grades 1~5 of worm wheels using JIS B 1702:1976, “Precision of Spur and Helical Gears” as the reference.
① Precision of worms (KHK W 001) KHK established the precision grades 1~4 of worms. For profile
and lead errors, JIS B 4354:1988, “Gear Hobs”, was used as reference. Lead errors are measured over one full revolution.
6 up
to 1
2
12 u
p to
25
25 u
p to
50
50 u
p to
100
100
up to
200
12 u
p to
25
25 u
p to
50
50 u
p to
100
100
up to
200
200
up to
400
12 u
p to
25
25 u
p to
50
50 u
p to
100
100
up to
200
200
up to
400
25 u
p to
50
50 u
p to
100
100
up to
200
200
up to
400
400
up to
800
25 u
p to
50
50 u
p to
100
100
up to
200
200
up to
400
400
up to
800
Bore Type
0.1-0.1
296
In order to use KHK stock worms and worm wheels safely, carefully read the Application Hints before proceeding. If there are questions or you require clarifications, please contact our technical department or your nearest distributor.
② To open up the bore to its maximum, calculate the bore size so that the tooth strength is weaker than the strength of the remaining material.
③ Some of SWG and KWG ground worms in small modules become hardened during heat treatment to the depth of 1 to 2mm below the root. Caution must be exercised when performing secondary operations on the bore.
④ Heat treating SW worms will increase lead and pressure angle errors. Therefore, pay special attention to the backlash and tooth contact.
⑤ PG plastic worm wheels are susceptible to effects of temperature and moisture. Dimensions may change between during remachining operations and afterwards.
① KHK stock worms and worm wheels are designed such that when assembled according to the specified mounting distance with a tolerance of H7~H8, the backlash shown in the product tables is obtained. Do not attempt to eliminate backlash by pushing worms into worm wheels or operate with the worm shifted in the direction along the tooth.
② Because of the helix of the gear teeth, worms and worm wheels produce axial thrust forces. The directions of thrust depend on the hand of the helix and the direction of rotation. This is illustrated below in Fig.2. The bearings must be selected properly to be able to handle these thrust forces.
If chucking operation using scroll chucks is
to be done, we recommend the use of new
or rebored jaws for improved precision.
Fig.1
Fig.2
① If you are reboring, it is important to pay special attention to locating the center in order to avoid runout. (Fig.1)
The reference datum for gear cutting or grinding is the bore. (For worm shafts, it is ground portion of the shaft.) Therefore,
use the bore or shaft for locating the center. If it is too difficult to do for small bores, the alternative is to use one spot on the bore and the runout of the side surface.
③ Overall Length Tolerance of Worms
Type
KWGDL
SWG,SWSUW
KWGDLSKWG
- 0.15-0.15
0.1-0.2
Normal toleranceShaft Type
SeriesTotal length(mm)
0~99 100~200
1. Caution on Performing Secondary Operations
2. Points of Caution in Assembling
Worm Gear Pair
Application Hints
Lathe Operations
Direction of rotation and thrust forceR helical
driver
L helical
driver
driver driver
thrust bearing
thrust bearing
KHK CO., LTD. TECHNICAL DEPARTMENTPHONE: 81-48-254-1744 FAX: 81-48-254-1765E-mail export@khkgears.co.jp
297
Food Processing Machine (Worm Gear)
Confectionery making machine (Worm Gears)
④ Because large thrust forces act on worms, if they are not secured to the shaft firmly, they tend to shift. Use of step shafts, set screws, dowel pins, etc., are recommended. Also, check for loosening of bearings due to thrust forces.
⑤ How well the worms and worm wheels are assembled has large effects on the friction of the unit. The tooth contact at the time of assembly must be checked for correctness as shown below.
① Before operating, check the following: ● Are the gears firmly mounted on the shafts? ● Have you eliminated uneven tooth contact?● Does the gear mesh have a proper amount of backlash? (Please avoid the condition of no backlash) ● Is there sufficient lubrication? ② If the gears are exposed, install a safety cover for protection.
Never touch gears while they are in motion. ③ Check the noise and vibration while the machine is in operation
for any unusual conditions. If an abnormality is encountered, recheck the gears and assembly conditions. Also, check lubrication after start-up. Sometimes, when the unit is initially being operated, lubricating oil deteriorates rapidly.
④ Worm gear drives generate more heat then other types of gear drives. Extra care should be exercised in the selection and amount of lubricant.
①KHK products are individually packaged to avoid damage. Depending on how they are handled, it is still possible to deform or break them. It is important to exercise care in handling these parts.
② Check the products as they are being taken out of the boxes. If any of them are rusted, scratched or dented, please return to the dealer where they were bought, for exchange.
③ KHK cannot guarantee the precision of gears once the customer performs a secondary operation on them.
● Verify that the worm axis is perpendicular to the worm
wheel axis.
KHK Technical Information
3. Notes on Starting Operations
4. Other Points to Consider in Applications
● Check for the worm axis to be in the center of the worm
wheel face width.
● Confirm that the center of the worm wheel goes
through the midpoint of the worm length. The worm cannot rotate correctly if the worm is engaged close to either end of its length.
good bad
bad
bad
good
good
Example of KHK Gear Applications
298
The dual-lead worm is formed to give a difference between the right tooth surface and left tooth surface so that it provides a unique tooth profile in which the tooth thickness varies continuously, corresponding with the lead difference (Fig.1)The worm gear is also formed in its right and left tooth surface.When such a worm and worm gear are set up at a constant assembly distance and the worm is moved in the axial direction, the tooth thickness of the worm in mesh with the worm gear changes making backlash adjustment possible.An arrow marking on the outer circumference of the hub of the KHK duplex worm indicates the direction of assembly as well as acts as a guide for the backlash adjustment.When the worm is held with arrow mark pointing right, the tooth thickness is thinner on the right and thicker on the left. Therefore, moving the worm to the right causes the thicker teeth to come into actual engagement with the worm gear, thereby reducing the backlash (Fig.2)
The usual method of adjusting the backlash of a worm gear assembly is to modify the center distance. Once assembled, such adjustment require a major rework of the gearbox housing. The use of duplex worm gears allows the backlash adjustment to be made by axially shifting the worm. This simplifies greatly the assembly and maintenance operations. Because of the unique characteristics of the product, please take time to study its construction and proper use.
CAUTION: The amount of change in backlash ( △ j mm) in
relation to the axial movement of the duplex worm shaft
(V mm) can be calculated from the formula below.
CAUTION: The KHK duplex worm is designed so that, for all modules, the backlash reduces by 0.02mm when the worm is shifted 1mm.
Fig.1
Fig.2
■ Description of duplex worm gears
1. Backlash adjustment mechanism and method of adjustment
Worm Gear Pair
(a tooth surface pitch) (b tooth surface pitch)
b tooth surface a tooth surface
d (N
omin
al P
CD)
m b-m aΔj = 2V m a+m b
Where
ma and mb are duplex modules from the table.
Reference toothMoving the worm in the direction of the arrow causes the backlash to decrease.
299
KHK duplex worm gears differs in module between the right and left tooth surface and, therefore, you must orient the worm and worm wheel properly. Please carefully verify the following two aspects before proceeding with assembly.
An arrow indicating the orientation of assembly is stamped on both the duplex worm and worm wheel. When assembling the worm and worm wheel, check the worm wheel of the arrow mark on the front such that the direction of arrow mark on the worm coincides with that on the worm wheel. Should the assembly be incorrect, the center distance “a” will become larger than the normal distance, resulting in difficulty of assembly and improper gear engagement. (Fig.3)
A V-groove (60°, 0.3mm deep line) on tip peripheral of the duplex worm tooth marks the reference tooth. The gear set is designated to have a backlash of nearly zero (+/-0.03) when the reference tooth is positioned in alignment with the center of rotation of the worm wheel with the center distance set at the value “a” (Fig.3)
Fig.3
KHK Technical Information
2. Point of caution during assembly
■ Verifying the orientation of assembly ■ Verifying the reference position
Reference tooth
Cent
er d
istan
ce a
Reference tooth
Cent
er d
istan
ce a
Arrow mark indicates the correct orientation of two gears when assembled. As shown, the two arrows must point in the same direction.
■ Module 2 Duplex Worms
300
■ Module 2 Duplex Worm Shafts
■ Module 2 Duplex Worm Wheels
CAUTION: Duplex worms and worm wheels must be mated in a predetermined orientation. Please see the beginning of this section (page 298) for details.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
W4 Shape
W6 Shape
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RKWGDL2-R1 m2 1 3°41' R W4 14 25 31 35 36 14 50
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWGDLS2-R1 m2 1 3°41' R W6 220 75 13 36 21 75 31
Catalog No. Reduction ratio Nominal axial module No. of teeth Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width
AH7 B C D D' E F
AGDL2-20R1AGDL2-30R1AGDL2-36R1AGDL2-40R1AGDL2-50R1AGDL2-60R1
203036405060
m2
203036405060
3°41'3°41'3°41'3°41'3°41'3°41'
RRRRRR
H1H1H1H1H1H1
121515151515
334045455060
40607280
100120
44647684
104124
46667886
106126
181818181818
151515151515
2KWGDL(S) Duplex Worms, AGDL Worm WheelsW
orm
Gea
r Pa
irNominal Axial Module
KWGDL.KWGDLS.AGDL
30
301
NOTE 1: If the worm and worm wheel are assembled to the standard center distance, it is designated to have a near zero backlash (+/-0.03).
NOTE 2: When the center distance is moved so as to reduce the backlash, V max is the maximum amount that you may shift without causing problems with gear mesh. It is not the recommended adjustment value.
NOTE 4: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The table below shows the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 3: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
■ AGDL2 Allowable Worm Wheel Torques (N.m) Worms min-1
Catalog No.
AGDL2-20R1AGDL2-30R1AGDL2-36R1AGDL2-40R1AGDL2-50R1AGDL2-60R1
021.0044.3062.3075.8114.5160.2
017.45037.30052.60064.00096.80136.00
013.63029.60042.00051.40078.40110.40
11.2224.8035.5043.6066.9094.60
09.8421.9031.3038.5059.5084.90
08.9419.8028.4034.9054.2077.20
07.7517.4325.0030.7047.6068.10
100 300 600 900 1200 1800
H1 Shape
Position ofreference tooth NOTE 1
Max. allowable shift NOTE 2 Weight
(kg)Catalog No.
S Vmax22 8 0.21 KWGDL2-R1
Outside dia. Neck dia. Shaft dia. NOTE 3Position of
reference tooth NOTE 1Max. allowable shift
NOTE 2 Weight(kg) Catalog No.
Q R S T Vmax35 24 30 22 8 1.2 KWGDLS2-R1
Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 4 Allowable torque(kgf・m) Bac4klash(mm)
Weight(kg) Catalog No.
G (H) ( I ) J Surface durability Surface durability
333333333333
――――――
――――――
35.545.551.555.565.575.5
11.224.835.543.666.994.6
1.142.533.624.456.839.64
0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045
0.280.550.790.931.402.04
AGDL2-20R1AGDL2-30R1AGDL2-36R1AGDL2-40R1AGDL2-50R1AGDL2-60R1
Duplex Worms, Worm Wheels
Wor
mG
ear
Pair
KWGDL.KWGDLS.AGDL
Datum reference surfacefor gear cutting and grinding Bore
Possible except tooth area
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGDLKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440Teeth induction hardened after thermal refining
50~55HRC—
Ground
KWGDLSKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440Teeth induction hardened after thermal refining
50~55HRCBlack oxide except ground surfaces
Ground Shaft (ground portion)
Possible except tooth area
AGDLKHK W 002 grade 1Rotating planeStandard full depth17˚30´CAC702 (Formerly JIS AℓBC2)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
■ Module 2.5 Duplex Worms
302
■ Module 2.5 Duplex Worm Shafts
■ Module 2.5 Duplex Worm Wheels
CAUTION: Duplex worms and worm wheels must be mated in a predetermined orientation. Please see the beginning of this section (page 298) for details.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
W4 Shape
W6 Shape
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RKWGDL2.5-R1 m2.5 1 3°52' R W4 18 30 37 42 48 17 65
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWGDLS2.5-R1 m2.5 1 3°52' R W6 260 85 16 48 26 85 37
Catalog No. Reduction ratio Nominal axial module No. of teeth Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width
AH7 B C D D' E F
AGDL2.5-20R1AGDL2.5-30R1AGDL2.5-36R1AGDL2.5-40R1AGDL2.5-50R1AGDL2.5-60R1
203036405060
m2.5
203036405060
3°52'3°52'3°52'3°52'3°52'3°52'
RRRRRR
H1H1H1HBHBHB
151515151515
404045456080
507590
100125150
558095
105130155
57.582.597.5
107.5132.5157.5
222222222222
151515151515
2.5KWGDL(S) Duplex Worms, AGDL Worm Wheels Nominal Axial Module
KWGDL.KWGDLS.AGDL
Wor
mG
ear
Pair
038.1
30
303
NOTE 1: If the worm and worm wheel are assembled to the standard center distance, it is designated to have a near zero backlash (+/-0.03).
NOTE 2: When the center distance is moved so as to reduce the backlash, V max is the maximum amount that you may shift without causing problems with gear mesh. It is not the recommended adjustment value.
NOTE 4: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The table below shows the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 5: The dimension tolerance of CS parts are the very coarse grade of JIS B 0405.
NOTE 3: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
■ AGDL2.5 Allowable Worm Wheel Torques (N.m) Worms min-1
Catalog No.
AGDL2.5-20R1AGDL2.5-30R1AGDL2.5-36R1AGDL2.5-40R1AGDL2.5-50R1AGDL2.5-60R1
080.5113.2137.8208.0291.0
031.4067.1094.5115.0174.0245.0
024.5053.1075.5092.4141.0198.4
020.1044.5063.8078.3120.1169.8
017.6039.1056.0068.8106.3151.8
016.04035.50051.00062.70097.30138.50
013.75030.90044.30054.40084.30120.80
100 300 600 900 1200 1800
*CS has a sand mold casting finish. NOTE 5H1 Shape
HB Shape
Position ofreference tooth NOTE 1
Max. allowable shift NOTE 2 Weight
(kg)Catalog No.
S Vmax29 10 0.37 KWGDL2.5-R1
Outside dia. Neck dia. Shaft dia. NOTE 3Position of
reference tooth NOTE 1Max. allowable shift
NOTE 2 Weight(kg)
Catalog No.Q R S T Vmax42 30 36 29 10 2.10 KWGDLS2.5-R1
Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 4 Allowable torque(kgf・m) Bac4klash(mm)
Weight(kg)
Catalog No.G (H) ( I ) J Surface durability Surface durability
373737373737
―――
(10)(12)(12)
―――(86)
(108)(133)
43.55663.568.58193.5
20.144.563.878.3
120170
2.054.546.507.98
12.317.3
0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045
0.500.771.071.242.093.11
AGDL2.5-20R1AGDL2.5-30R1AGDL2.5-36R1AGDL2.5-40R1AGDL2.5-50R1AGDL2.5-60R1
Duplex Worms, Worm Wheels
Wor
mG
ear
Pair
KWGDL.KWGDLS.AGDL
BorePossible except tooth area
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGDLKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC—
Ground
KWGDLSKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRCBlack oxide except ground surfaces
Ground
Possible except tooth area
AGDLKHK W 002 grade 1Rotating planeStandard full depth17˚30´CAC702 (Formerly JIS AℓBC2)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
Teeth induction hardened after thermal refining
Teeth induction hardened after thermal refining
Shaft (ground portion) Datum reference surfacefor gear cutting and grinding
3
■ Module 3 Duplex Worms
304
■ Module 3 Duplex Worm Shafts
■ Module 3 Duplex Worm Wheels
CAUTION: Duplex worms and worm wheels must be mated in a predetermined orientation. Please see the beginning of this section (page 298) for details.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
W4 Shape
W6 Shape
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RKWGDL3-R1 m3 1 3°54' R W4 20 35 44 50 54 20 74
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWGDLS3-R1 m3 1 3°54' R W6 300 100 18 54 28 100 44
Catalog No. Reduction ratio Nominal axial module No. of teeth Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width
AH7 B C D D' E F
AGDL3-20R1AGDL3-30R1AGDL3-36R1AGDL3-40R1AGDL3-50R1AGDL3-60R1
203036405060
m3
203036405060
3°54'3°54'3°54'3°54'3°54'3°54'
RRRRRR
H1H1H1HBHBHB
202020202020
505560607080
6090
108120150180
6696
114126156186
6999
117129159189
282828282828
171717171717
3KWGDL(S) Duplex Worms, AGDL Worm Wheels
KWGDL.KWGDLS.AGDL
Nominal Axial Module
Wor
mG
ear
Pair
30
305
ウウウウウウ
NOTE 1: If the worm and worm wheel are assembled to the standard center distance, it is designated to have a near zero backlash (+/-0.03).
NOTE 2: When the center distance is moved so as to reduce the backlash, V max is the maximum amount that you may shift without causing problems with gear mesh. It is not the recommended adjustment value.
NOTE 4: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The table below shows the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 5: The dimension tolerance of CS parts are the very coarse grade of JIS B 0405.
NOTE3: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
■ AGDL3 Allowable Worm Wheel Torques (N.m) Worms min-1
Catalog No.
AGDL3-20R1AGDL3-30R1AGDL3-36R1AGDL3-40R1AGDL3-50R1AGDL3-60R1
065.0137.4193.2235.0355.0497.0
053.3113.9160.4195.2295.0415.0
041.590.
128.0156.6239.0336.0
033.8074.7107.0131.3202.0285.0
029.5065.5093.8115.2178.2254.0
026.9059.5085.6105.3163.4233.0
022.8051.2073.4090.1139.7200.0
100 300 600 900 1200 1800
H1 Shape
*CS has a sand mold casting finish. NOTE 5
HB Shape
Position ofreference tooth NOTE 1
Max. allowable shift NOTE 2 Weight
(kg)Catalog No.
S Vmax32 10 0.61 KWGDL3-R1
Outside dia. Neck dia. Shaft dia. NOTE 3Position of
reference tooth NOTE 1Max. allowable shift
NOTE 2 Weight(kg)
Catalog No.Q R S T Vmax50 34 40 32 10 3.00 KWGDLS3-R1
Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 4 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.G (H) ( I ) J Surface durability Surface durability
454545454545
―――
(14)(14)(14)
―――
(106)(134)(164)
5267768297
112
33.874.7
107131202285
3.457.61
10.913.420.629.0
0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045
0.881.782.482.363.484.74
AGDL3-20R1AGDL3-30R1AGDL3-36R1AGDL3-40R1AGDL3-50R1AGDL3-60R1
Duplex Worms, Worm Wheels
Wor
mG
ear
Pair
KWGDL.KWGDLS.AGDL
BorePossible except tooth area
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGDLKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC—
Ground
KWGDLSKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC
Ground
Possible except tooth area
AGDLKHK W 002 grade 1Rotating planeStandard full depth17˚30´CAC702 (Formerly JIS AℓBC2)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
Black oxide except ground surfaces
Teeth induction hardened after thermal refining
Teeth induction hardened after thermal refining
Shaft (ground portion) Datum reference surfacefor gear cutting and grinding
■ Module 3.5 Duplex Worms
306
■ Module 3.5 Duplex Worm Shafts
■ Module 3.5 Duplex Worm Wheels
CAUTION: Duplex worms and worm wheels must be mated in a predetermined orientation. Please see the beginning of this section (page 298) for details.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
W4 Shape
W6 Shape
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RKWGDL3.5-R1 m3.5 1 3°47' R W4 24 44 53 60 62 23 85
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWGDLS3.5-R1 m3.5 1 3°47' R W6 330 110 18 62 30 110 53
Catalog No. Reduction ratio Nominal axial module No. of teeth Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width
AH7 B C D D' E F
AGDL3.5-20R1AGDL3.5-30R1AGDL3.5-36R1AGDL3.5-40R1AGDL3.5-50R1AGDL3.5-60R1
203036405060
m3.5
203036405060
3°47'3°47'3°47'3°47'3°47'3°47'
RRRRRR
H1H1H1HBHBHB
202020202020
556070708090
70105126140175210
77112133147182217
80.5115.5136.5150.5185.5220.5
323232323232
181818181818
3.5KWGDL(S) Duplex Worms, AGDL Worm Wheels
KWGDL.KWGDLS.AGDL
Nominal Axial Module
Wor
mG
ear
Pair
30
307
NOTE 1: If the worm and worm wheel are assembled to the standard center distance, it is designated to have a near zero backlash (+/-0.03).
NOTE 2: When the center distance is moved so as to reduce the backlash, V max is the maximum amount that you may shift without causing problems with gear mesh. It is not the recommended adjustment value.
NOTE 3: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
■ AGDL3.5 Allowable Worm Wheel Torques (N.m) Worms min-1
Catalog No.
AGDL3.5-20R1AGDL3.5-30R1AGDL3.5-36R1AGDL3.5-40R1AGDL3.5-50R1AGDL3.5-60R1
098.5208.0293.0356.0538.0753.0
080.4171.9242.0295.0446.0627.0
062.5135.6192.9236.0360.0506.0
050.4111.3159.5195.8301.0425.0
044.2098.1140.7172.7267.0381.0
040.0088.3127.0156.2243.0345.0
033.7075.7108.6133.3207.0296.0
100 300 600 900 1200 1800
H1 Shape *CS has a sand mold casting finish. NOTE 5
HB Shape
NOTE 4: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The table below shows the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 5: The dimension tolerance of CS parts are the very coarse grade of JIS B 0405.
Shaft dia. NOTE 3Position of
reference tooth NOTE 1 Weight(kg)
Catalog No.S Vmax37 12 1.05 KWGDL3.5-R1
Outside dia. Neck dia. Shaft dia. NOTE 3Position of
reference tooth NOTE 1Max. allowable shift
NOTE 2 Weight(kg)
Catalog No.Q R S T Vmax60 42 48 37 12 5.00 KWGDLS3.5-R1
Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 4 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.G (H) ( I ) J Surface durability Surface durability
505050505050
―――
(15)(16)(16)
―――
(124)(155)(189)
61.57989.596.5
114131.5
50.4111160196301425
5.1411.416.32030.643.3
0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045
1.342.733.953.585.447.31
AGDL3.5-20R1AGDL3.5-30R1AGDL3.5-36R1AGDL3.5-40R1AGDL3.5-50R1AGDL3.5-60R1
Duplex Worms, Worm Wheels
Wor
mG
ear
Pair
KWGDL.KWGDLS.AGDL
BorePossible except tooth area
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGDLKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC—
Ground
KWGDLSKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC
Ground
Possible except tooth area
AGDLKHK W 002 grade 1Rotating planeStandard full depth17˚30´CAC702 (Formerly JIS AℓBC2)
—
—
—
CutBorePossible
CAUTION: AℓBC2 is aluminum bronze.
Black oxide except ground surfaces
Teeth induction hardened after thermal refining
Teeth induction hardened after thermal refining
Shaft (ground portion) Datum reference surfacefor gear cutting and grinding
■ Module 4 Duplex Worms
308
■ Module 4 Duplex Worm Shafts
■ Module 4 Duplex Worm Wheels
CAUTION: Duplex worms and worm wheels must be mated in a predetermined orientation. Please see the beginning of this section (page 298) for details.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
W4 Shape
W6 Shape
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RKWGDL4-R1 m4 1 3°41' R W4 28 50 62 70 74 26 100
Catalog No. Nominal axial module Number of start Nominal
lead angle Hand of tread ShapeTotal length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWGDLS4-R1 m4 1 3°41' R W6 360 120 16 74 30 120 62
Catalog No. Reduction ratio Nominal axial module No. of teeth Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width
AH7 B C D D' E F
AGDL4-20R1AGDL4-30R1AGDL4-36R1AGDL4-40R1AGDL4-50R1AGDL4-60R1
203036405060
m4
203036405060
3°41'3°41'3°41'3°41'3°41'3°41'
RRRRRR
H1HBHBHBHBH5
202020202030
6065757590
120
80120144160200240
88128152168208248
92132156172212252
353535353535
202020202020
4KWGDL(S) Duplex Worms, AGDL Worm Wheels
KWGDL.KWGDLS.AGDL
Nominal Axial Module
Wor
mG
ear
Pair
30
309
NOTE 1: If the worm and worm wheel are assembled to the standard center distance, it is designated to have a near zero backlash (+/-0.03).
NOTE 2: When the center distance is moved so as to reduce the backlash, V max is the maximum amount that you may shift without causing problems with gear mesh. It is not the recommended adjustment value.
NOTE 3: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
■ AGDL4 Allowable Worm Wheel Torques (N.m)Worms min-1
Catalog No.
AGDL4-20R1AGDL4-30R1AGDL4-36R1AGDL4-40R1AGDL4-50R1AGDL4-60R1
0134.40284.00400.00486.00735.01028.0
109.2234.0329.0400.0605.0851.0
084.8183.9262.0320.0488.0687.0
067.9150.1215.0264.0405.0572.0
059.7132.4189.9233.0361.0515.0
053.4117.9169.5208.0324.0461.0
044.8100.7144.4177.3275.0393.0
100 300 600 900 1200 1800
H1 Shape
H5 Shape
*CS has a sand mold casting finish. NOTE 5
HB Shape
NOTE 4: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The table below shows the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 5: The dimension tolerance of CS parts are the very coarse grade of JIS B 0405.
Position ofreference tooth NOTE 1
Max. allowable shift NOTE 2 Weight
(kg)Catalog No.
S Vmax44 14 1.67 KWGDL4-R1
Outside dia. Neck dia. Shaft dia. NOTE 3Position of
reference tooth NOTE 1Max. allowable shift
NOTE 2 Weight(kg)
Catalog No.Q R S T Vmax70 50 56 44 14 7.40 KWGDLS4-R1
Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 4 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.G (H) ( I ) J Surface durability Surface durability
555555555555
―(17)(17)(17)(17)(17)
―(99)
(121)(137)(177)(200)
7191
103111131151
67.9150215264405572
6.9215.321.926.941.358.4
0±0.0450±0.0450±0.0450±0.0450±0.0450±0.045
1.923.234.445.27.69
11.7
AGDL4-20R1AGDL4-30R1AGDL4-36R1AGDL4-40R1AGDL4-50R1AGDL4-60R1
Duplex Worms, Worm Wheels
Wor
mG
ear
Pair
KWGDL.KWGDLS.AGDL
BorePossible except tooth area
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGDLKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC—
Ground
KWGDLSKHK W 001 grade 1AxialJIS 3 type Standard full depth
17˚30´SCM440
50~55HRC
Ground
Possible except tooth area
AGDLKHK W 002 grade 1Rotating planeStandard full depth17˚30´CAC702 (Formerly JIS AℓBC2)(Hub of H5 shape is S45C)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
Black oxide except ground surfaces
Teeth induction hardened after thermal refining
Teeth induction hardened after thermal refining
Shaft (ground portion) Datum reference surfacefor gear cutting and grinding
■ Module 0.5 Ground Worm Shafts
310
■ Module 0.5 Worm Wheels
■ Module 0.8 Ground Worm Shafts
■ Module 0.8 Worm Wheels
CAUTION: The root area of teeth on worm shafts is very hard due to heat treatment. Extra caution is urged for any secondary operations.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
■ AG0.5 Allowable Worm Wheel Torques (N.m)
W5 Shape
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG0.5-R1KWG0.5-R2
m0.512
3°11'6°20'
RR
W5W5
6565
1919
――
1212
――
3434
99
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG0.5-20R1AG0.5-20R2AG0.5-30R1AG0.5-30R2AG0.5-40R1
2010301540
m0.5
2020303040
12121
3°11'6°20'3°11'6°20'3°11'
RRRRR
HAHAHAHAHA
44445
99
121215
1010151520
―――――
1111161621
55555
AG0.5-50R1AG0.5-60R1
5060
5060
11
3°11'3°11'
RR
HAHA
55
2025
2530
――
2631
55
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG0.8-R1KWG0.8-R2
m0.812
3°49'7°36'
RR
W5W5
8585
2525
――
2020
――
4040
1212
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG0.8-20R1AG0.8-20R2AG0.8-30R1AG0.8-30R2AG0.8-40R1
2010301540
m0.8
2020303040
12121
3°49'7°36'3°49'7°36'3°49'
RRRRR
HAHAHAHAHA
55556
1212181820
1616242432
―――――
17.617.625.625.633.6
88888
AG0.8-50R1AG0.8-60R1
5060
5060
11
3°49'3°49'
RR
HAHA
88
2525
4048
――
41.649.6
88
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG0.5-20R1AG0.5-20R2AG0.5-30R1AG0.5-30R2AG0.5-40R1AG0.5-50R1AG0.5-60R1
0.520.511.091.091.862.823.94
0.440.420.940.921.602.423.41
0.360.330.770.731.342.052.89
0.300.270.650.601.151.772.50
0.260.240.580.541.021.582.26
0.240.220.530.490.941.462.08
0.210.190.480.430.841.301.87
Wor
mG
ear
Pair
KWG.AG
0.5~0.8KWG Ground Worm Shafts, AG Worm Wheels Axial Modules
311
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
■ AG0.8 Allowable Worm Wheel Torques (N.m)
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚SCM440Teeth induction hardened afterthermal refining
50~55HRC—
Ground Shaft (ground portion)
Possible except tooth area
AGKHK W 002 grade 2Rotating planeStandard full depth20˚CAC702 (Formerly JIS AℓBC2)
—
—
—
CutBorePossible
CAUTION: AℓBC2 is aluminum bronze.
HA Shape Datum reference surfacefor gear cutting and grinding
Outside dia. Neck dia. Shaft dia. Weight(kg)
Catalog No.Q R Sh7
1010
――
66
0.020.02
KWG0.5-R1KWG0.5-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
77777
1212121212
―――――
―――――
9.50 9.50
12.0 12.0 14.5
0.30 0.27 0.65 0.60 1.15
0.030 0.030 0.070 0.060 0.12
0.02~0.140.02~0.140.02~0.140.02~0.140.02~0.14
0.010.010.010.010.02
AG0.5-20R1AG0.5-20R2AG0.5-30R1AG0.5-30R2AG0.5-40R1
77
1212
――
――
17.0 19.5
1.77 2.50
0.18 0.25
0.02~0.140.02~0.14
0.040.06
AG0.5-50R1AG0.5-60R1
Outside dia. Neck dia. Shaft dia. Weight(kg)
Catalog No.Q R Sh7
13.613.6
――
88
0.040.04
KWG0.8-R1KWG0.8-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
88888
1616161616
―――――
―――――
14.0 14.0 18.0 18.0 22.0
1.00 0.91 2.20 2.02 3.87
0.10 0.09 0.22 0.21 0.39
0.02~0.140.02~0.140.02~0.140.02~0.140.02~0.14
0.020.020.040.040.07
AG0.8-20R1AG0.8-20R2AG0.8-30R1AG0.8-30R2AG0.8-40R1
88
1616
――
――
26.0 30.0
5.94 8.39
0.61 0.86
0.02~0.140.02~0.14
0.110.14
AG0.8-50R1AG0.8-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG0.8-20R1AG0.8-20R2AG0.8-30R1AG0.8-30R2AG0.8-40R1AG0.8-50R1AG0.8-60R1
1.781.763.773.756.459.75
13.6
1.501.443.213.145.498.31
11.7
1.211.112.622.464.556.949.77
1.000.912.202.023.875.948.39
0.880.801.961.803.465.347.63
0.820.741.811.653.194.967.05
0.710.631.611.452.834.386.27
Wor
mG
ear
Pair
KWG.AG
Ground Worm Shafts, Worm Wheels
312
W6 Shape
■ Module 1 Ground Worm Shafts
■ Module 1 Worm Wheels
■ Module 1.5 Ground Worm Shafts
■ Module 1.5 Worm Wheels
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
■ AG1 Allowable Worm Wheel Torques (N.m)
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG1-R1KWG1-R2
m112
3°35'7°08'
RR
W6W6
140140
3535
1010
3030
1010
5555
1616
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1
2010301540
m1
2020303040
12121
3°35'7°08'3°35'7°08'3°35'
RRRRR
H1H1H1H1H1
66668
1616202026
2020303040
2222323242
2323333343
1010101010
AG1-50R1AG1-60R1
5060
5060
11
3°35'3°35'
RR
H1H1
810
3035
5060
5262
5363
1010
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG1.5-R1KWG1.5-R2
m1.512
3°26'6°51'
RR
W6W6
190190
5050
1515
4040
1515
7070
2525
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1
2010301540
m1.5
2020303040
12121
3°26'6°51'3°26'6°51'3°26'
RRRRR
H1H1H1H1H1
88
101012
2222303035
3030454560
3333484863
34.534.549.549.564.5
1414141414
AG1.5-50R1AG1.5-60R1
5060
5060
11
3°26'3°26'
RR
H1H1
1212
4550
7590
7893
79.594.5
1414
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1AG1-50R1AG1-60R1
3.353.317.087.03
12.118.325.6
2.792.695.985.84
10.215.521.8
2.232.064.844.568.43
12.918.1
1.831.684.053.727.12
10.915.4
1.631.483.633.336.389.87
14.1
1.501.353.313.035.869.09
12.9
1.301.152.922.635.137.95
11.4
KWG.AG
1~1.5KWG Ground Worm Shafts, AG Worm Wheels Axial Modules
Wor
mG
ear
Pair
NOTE 2: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
313
■ AG1.5 Allowable Worm Wheel Torques (N.m)
NOTE 1: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
H1 Shape
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚SCM440
50~55HRC—
Ground
Possible except tooth area
AGKHK W 002 grade 2Rotating planeStandard full depth20˚CAC702 (Formerly JIS AℓBC2)
—
—
—
CutBorePossible
CAUTION: AℓBC2 is aluminum bronze.
Teeth induction hardened afterthermal refining
Shaft (ground portion)Datum reference surfacefor gear cutting and grinding
Outside dia. Neck dia. Shaft dia. NOTE 1 Weight(kg)
Catalog No.Q R S1818
1313
1818
0.250.25
KWG1-R1KWG1-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1010101010
2020202020
―――――
―――――
18.0 18.0 23.0 23.0 28.0
1.83 1.68 4.05 3.72 7.12
0.19 0.17 0.41 0.38 0.73
0.08~0.190.08~0.190.08~0.190.08~0.190.08~0.19
0.050.050.080.080.15
AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1
1010
2020
――
――
33.0 38.0
10.9 15.4
1.11 1.57
0.08~0.190.08~0.19
0.230.32
AG1-50R1AG1-60R1
Outside dia. Neck dia. Shaft dia. Weight(kg)
Catalog No.Q R S2828
2121
2626
0.740.74
KWG1.5-R1KWG1.5-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1010101010
2424242424
―――――
―――――
27.5 27.5 35.0 35.0 42.5
5.30 4.87
11.7 10.8 20.6
0.54 0.50 1.19 1.10 2.10
0.10~0.210.10~0.210.10~0.210.10~0.210.10~0.21
0.0990.0990.220.220.36
AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1
1010
2424
――
――
50.0 57.5
31.6 44.7
3.22 4.55
0.10~0.210.10~0.21
0.580.81
AG1.5-50R1AG1.5-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1AG1.5-50R1AG1.5-60R1
9.849.72
20.820.735.653.875.3
8.187.87
17.517.130.045.463.8
6.405.92
13.913.124.236.951.9
5.304.87
11.710.820.631.644.7
4.684.25
10.49.56
18.328.340.4
4.253.839.408.58
16.625.836.7
3.683.278.287.46
14.622.632.4
Wor
mG
ear
Pair
KWG.AG
Ground Worm Shafts, Worm Wheels
314
KWG.AGF
CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
■ AGF2 Allowable Worm Wheel Torques (N.m)
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.NOTE 1: These worm wheels are profile shifted except the 36 tooth gear.
W6 Shape
H6 Shape
■ Module 2 Ground Worm Shafts
■ Module 2 Worm Wheels
■ Module 2.5 Ground Worm Shafts
■ Module 2.5 Worm Wheels
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG2-R1KWG2-R2
m212
5°12'10°18'
RR
W6W6
200200
3535
2525
4040
2525
7575
2222
Catalog No. Reduction ratio Transverse module No. of teeth Number of start
Profile shiftcoeffiicient
NOTE 1
Helix angle Hand of tread ShapeNOTE 4
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAGF2-20R1AGF2-20R2AGF2-25R1AGF2-30R1AGF2-30R2
2010253015
m2
2020253030
12112
−0.5−0.5−0.5−0.5−0.5
5°12'10°18'
5°12'5°12'
10°18'
RRRRR
H6H6H6H6H6
1212121212
3232353838
4040506060
4242526262
4444546464
1818181818
AGF2-36R1AGF2-40R1AGF2-48R1AGF2-50R1AGF2-60R1
3640485060
3640485060
11111
0−0.5+0.5−0.5−0.5
5°12'5°12'5°12'5°12'5°12'
RRRRR
H6H8H9H9H9
1212121212
4045505050
728096
100120
7682
102102122
7884
104104124
1818181818
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG2.5-R1KWG2.5-R2
m2.512
4°46'9°28'
RR
W6W6
250250
5050
2727
4646
2727
100100
3030
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Profile shift
coeffiicient Helix angle Hand of tread ShapeNOTE 4
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAGF2.5-20R1AGF2.5-20R2AGF2.5-25R1AGF2.5-30R1AGF2.5-30R2
2010253015
m2.5
2020253030
12112
00000
4°46'9°28'4°46'4°46'9°28'
RRRRR
H6H6H6H6H6
1212121212
3535404040
505062.57575
555567.58080
57.557.57082.582.5
2020202020
AGF2.5-36R1AGF2.5-40R1AGF2.5-48R1AGF2.5-50R1AGF2.5-60R1
3640485060
3640485060
11111
00000
4°46'4°46'4°46'4°46'4°46'
RRRRR
H8H9H9H9H9
1212121212
4545505560
90100120125150
95105125130155
97.5107.5127.5132.5157.5
2020202020
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AGF2-20R1AGF2-20R2AGF2-25R1AGF2-30R1AGF2-30R2AGF2-36R1AGF2-40R1AGF2-48R1AGF2-50R1AGF2-60R1
19.419.929.441.142.357.870.398.5
106149
16.116.124.534.535.048.659.283.089.5
126
12.812.219.627.727.039.348.168.073.4
103
10.59.99
16.323.222.133.240.757.962.588.4
9.308.75
14.420.719.929.636.451.956.280.3
8.497.92
13.218.817.727.033.247.551.573.3
7.316.74
11.416.415.423.628.941.344.964.2
KWG Ground Worm Shafts, AGF Worm Wheels 2~2.5Axial Modules
Wor
mG
ear
Pair
■ AGF2.5 Allowable Worm Wheel Torques (N.m)
Ground Worm Shafts, Worm Wheels
315
KWG.AGF
NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 2: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
H8 Shape
H9 Shape
NOTE 4: Please avoid secondary operations that affect the strength of the joint between CAC702 and FC200. Also, there may be space in the casting between the two materials, but it will not affect the joint strength.
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary operations
Reference section of gearGear teeth
KWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚SCM440
50~55HRC—
Ground
Possible except tooth area
AGFKHK W 002 grade 2Rotating planeStandard full depth20˚CAC702(Formerly AℓBC2)(Hub of H8, H9 shape is FC200)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
Teeth induction hardened afterthermal refining
Shaft (ground portion)Datum reference surfacefor gear cutting and grinding
Outside dia. Neck dia. Shaft dia. NOTE 2 Weight(kg)
Catalog No.Q R S2626
1717
2525
0.700.70
KWG2-R1KWG2-R2
Hub width (R) Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F F' G (H) ( I ) J Surface durability Surface durability
1212121212
55555
3535353535
―――――
―――――
3030354040
10.5 9.99
16.3 23.2 22.1
1.07 1.02 1.66 2.36 2.35
0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24
0.250.250.350.500.50
AGF2-20R1AGF2-20R2AGF2-25R1AGF2-30R1AGF2-30R2
1212121212
55555
3535353535
――
(10)(12)(12)
――(76)(81)(96)
4750606070
33.2 40.7 57.9 62.5 88.4
3.38 4.15 5.90 6.38 9.01
0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24
0.700.801.101.101.50
AGF2-36R1AGF2-40R1AGF2-48R1AGF2-50R1AGF2-60R1
Outside dia. Neck dia. Shaft dia. NOTE 2 Weight(kg)
Catalog No.Q R S3535
2323
3030
1.301.30
KWG2.5-R1KWG2.5-R2
Hub width (R) Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F F' G (H) ( I ) J Surface durability Surface durability
1212121212
55555
3535353535
―――――
―――――
3030354040
10.5 9.99
16.3 23.2 22.1
1.07 1.02 1.66 2.36 2.35
0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24
0.250.250.350.500.50
AGF2-20R1AGF2-20R2AGF2-25R1AGF2-30R1AGF2-30R2
1212121212
55555
3535353535
――
(10)(12)(12)
――(76)(81)(96)
4750606070
33.2 40.7 57.9 62.5 88.4
3.38 4.15 5.90 6.38 9.01
0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24
0.700.801.101.101.50
AGF2-36R1AGF2-40R1AGF2-48R1AGF2-50R1AGF2-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AGF2.5-20R1AGF2.5-20R2AGF2.5-25R1AGF2.5-30R1AGF2.5-30R2AGF2.5-36R1AGF2.5-40R1AGF2.5-48R1AGF2.5-50R1AGF2.5-60R1
35.134.653.074.173.6
104127178192268
29.027.943.962.060.687.4
106149161226
22.620.934.849.146.269.885.4
121130183
18.617.128.941.237.859.072.4
103111157
16.314.825.336.733.251.863.790.898.4
141
14.813.423.032.829.947.157.983.190.0
128
12.811.320.028.725.841.250.572.278.3
112
Wor
mG
ear
Pair
CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
316
KWG.AGF
■ AGF3 Allowable Worm Wheel Torques (N.m)
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.NOTE 1: These worm wheels are profile shifted except the 25 tooth gear.
W6 Shape
H6 Shape
■ Module 3 Ground Worm Shafts
■ Module 3 Worm Wheels
■ Module 4 Ground Worm Shafts
■ Module 4 Worm Wheels
Wor
mG
ear
Pair
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG3-R1KWG3-R2
m312
4°31'8°58'
RR
W6W6
300300
5555
3030
6060
3030
125125
3838
Catalog No. Reduction ratio Transverse module No. of teeth Number of start
Profile shiftcoeffiicient
NOTE 1
Helix angle Hand of tread ShapeNOTE 4
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAGF3-20R1AGF3-20R2AGF3-25R1AGF3-30R1AGF3-30R2
2010253015
m3
2020253030
12112
+0.333+0.333
0+0.333+0.333
4°31'8°58'4°31'4°31'8°58'
RRRRR
H6H6H6H8H8
2020202020
5050555555
6060759090
6868819898
717184
101101
2525252525
AGF3-36R1AGF3-40R1AGF3-48R1AGF3-50R1AGF3-60R1
3640485060
3640485060
11111
+0.333+0.333+0.333+0.333+0.333
4°31'4°31'4°31'4°31'4°31'
RRRRR
H8H9H9H9H9
2020202020
6065707580
108120144150180
116128152158188
119131155161191
2525252525
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG4-R1KWG4-R2
m412
5°43'11°19'
RR
W6W6
360360
7070
32.532.5
7575
32.532.5
150150
4040
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Profile shift
coeffiicient Helix angle Hand of tread ShapeNOTE 4
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAGF4-20R1AGF4-20R2AGF4-25R1AGF4-30R1AGF4-30R2
2010253015
m4
2020253030
12112
00000
5°43'11°19'
5°43'5°43'
11°19'
RRRRR
H6H6H6H8H8
2020202020
6060656565
8080
100120120
8888
108128128
9292
112132132
3030303030
AGF4-36R1AGF4-40R1AGF4-48R1AGF4-50R1AGF4-60R1
3640485060
3640485060
11111
00000
5°43'5°43'5°43'5°43'5°43'
RRRRR
H9H9H9H9H0
20202020
160
70809090―
144160192200240
152168200208248
156172204212252
3030303030
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AGF3-20R1AGF3-20R2AGF3-25R1AGF3-30R1AGF3-30R2AGF3-36R1AGF3-40R1AGF3-48R1AGF3-50R1AGF3-60R1
59.760.290.2
126128178216303326457
49.148.274.3
105105148180252272383
38.336.158.883.179.8
118145204220310
31.529.548.969.665.299.7
122174188265
27.525.442.661.057.287.5
108153166237
25.123.039.055.451.679.498.0
141152217
21.519.433.548.244.369.184.9
121132188
KWG Ground Worm Shafts, AGF Worm Wheels 3~4Axial Modules
■ AGF4 Allowable Worm Wheel Torques (N.m)
NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 4: Please avoid secondary operations that affect the strength of the joint between CAC702 and FC200. Also, there may be space in the casting between the two materials, but it will not effect the joint strength.
Ground Worm Shafts, Worm Wheels
317
KWG.AGF
NOTE 2: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
H8 Shape
H9 Shape
H0 Shape
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚SCM440
50~55HRC—
Ground
Possible except tooth area
KHK W 002 grade 2Rotating planeStandard full depth20˚CAC702(Formerly AℓBC2)(Hub of H8, H9 shape is FC200)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
Teeth induction hardened afterthermal refining
Shaft (ground portion)
AGF
Datum reference surfacefor gear cutting and grinding
Outside dia. Neck dia. Shaft dia. NOTE 2 Weight(kg)
Catalog No.Q R S4444
3030
4040
2.802.80
KWG3-R1KWG3-R2
Hub width (R) Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F F' G (H) ( I ) J Surface durability Surface durability
17.517.517.517.517.5
7.57.57.57.57.5
5050505050
―――――
―――――
505056.56565
31.5 29.5 48.9 69.6 65.2
3.21 3.01 4.99 7.10 6.65
0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29
0.900.901.401.601.60
AGF3-20R1AGF3-20R2AGF3-25R1AGF3-30R1AGF3-30R2
17.517.517.517.517.5
7.57.57.57.57.5
5050505050
―(16)(15)(15)(15)
―(95)
(120)(125)(155)
74809295
110
99.7 122 174 188 265
10.2 12.5 17.7 19.2 27.1
0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29
2.202.403.303.604.80
AGF3-36R1AGF3-40R1AGF3-48R1AGF3-50R1AGF3-60R1
Outside dia. Neck dia. Shaft dia. NOTE 2 Weight(kg)
Catalog No.Q R S4848
2929
4545
3.903.90
KWG4-R1KWG4-R2
Hub width (R) Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F F' G (H) ( I ) J Surface durability Surface durability
2020202020
1010101010
6060606060
―――――
―――――
6060708080
64.6 61.9
100 143 137
6.596.31
10.2 14.6 13.9
0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32
1.701.702.603.203.20
AGF4-20R1AGF4-20R2AGF4-25R1AGF4-30R1AGF4-30R2
20202020―
10101010―
6060606030
(20)(23)(20)(20)
(8)
(113)(128)(160)(168)204
92100116120140
204 251 356 385 544
20.9 25.6 36.3 39.3 55.5
0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32
4.805.107.107.403.70
AGF4-36R1AGF4-40R1AGF4-48R1AGF4-50R1AGF4-60R1
Worm rpmCatalog No. 30 100 300 600 900 1200 1800
AGF4-20R1AGF4-20R2AGF4-25R1AGF4-30R1AGF4-30R2AGF4-36R1AGF4-40R1AGF4-48R1AGF4-50R1AGF4-60R1
123127186260270366445624673941
101101153216220304370519560788
78.876.0
121171168243297420454638
64.661.9
100143137204251356385544
56.353.287.3
125120179220314340486
51.548.379.9
114108164201288312444
43.840.568.598.492.2
141173248269385
Wor
mG
ear
Pair
318
KWG.AGF
CAUTION: Do not take heavy cuts when performing secondary operations on worm shafts to avoid bending them.
■ AGF5 Allowable Worm Wheel Torques (N.m)
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.
W6 Shape
H6 Shape
Wor
mG
ear
Pair
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG5-R1 m5 1 5°43' R W6 400 75 30 90 30 175 50
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Profile shift
coeffiicient Helix angle Hand of tread ShapeNOTE 3
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAGF5-20R1AGF5-25R1AGF5-30R1AGF5-36R1AGF5-40R1
2025303640 m5
2025303640
11111
00000
5°43'5°43'5°43'5°43'5°43'
RRRRR
H6H6H9H9H9
2222222222
75757590
110
100125150180200
110135160190210
115140165195215
3535353535
AGF5-48R1AGF5-50R1AGF5-60R1
485060
485060
111
000
5°43'5°43'5°43'
RRR
H0H0H0
140150200
―――
240250300
250260310
255265315
353535
Catalog No. Axial module Number of start Lead angle Hand of tread Shape
NOTE 3
Total length Shaft length (L) Neck length (L) Face width Neck length (R) Shaft length (R) Pitch dia.
J K L M N O PKWG6-R1 m6 1 5°43' R W6 400 60 40 100 40 160 60
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Profile shift
coeffiicient Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAGF6-20R1AGF6-25R1AGF6-30R1AGF6-36R1AGF6-40R1
2025303640 m6
2025303640
11111
00000
5°43'5°43'5°43'5°43'5°43'
RRRRR
H6H6H9H9H0
25252525
130
8590
100110―
120150180216240
132162192228252
138168198234258
4040404040
AGF6-48R1AGF6-50R1AGF6-60R1
485060
485060
111
000
5°43'5°43'5°43'
RRR
H0H0H0
180190250
―――
288300360
300312372
306318378
404040
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AGF5-20R1AGF5-25R1AGF5-30R1AGF5-36R1AGF5-40R1AGF5-48R1AGF5-50R1AGF5-60R1
211319446627763
107011501610
172261369519632886956
1340
134206291414506715772
1090
108168239343421598646913
95.0147211302371530574820
86.2134191274337483523744
72.7114164234288411446639
■ Module 5 Ground Worm Shafts
■ Module 5 Worm Wheels
■ Module 6 Ground Worm Shafts
■ Module 6 Worm Wheels
KWG Ground Worm Shafts, AGF Worm Wheels 5~6Axial Modules
■ AGF6 Allowable Worm Wheel Torques (N.m)
NOTE 2: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 3: Please avoid secondary operations that affect the strength of the joint between CAC702 and FC200. Also, there may be space in the casting between the two materials, but it will not affect the joint strength.
Ground Worm Shafts, Worm Wheels
319
KWG.AGF
NOTE 1: The shaft O.D., S, has the tolerance +0.2/+0.1 except where ground the tolerance is +0.40/+0.35.
H9 Shape
H0 Shape*CS has a sand mold casting finish. The
dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary Operations
Reference section of gearGear teeth
KWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚SCM440
50~55HRC—
Ground
Possible except tooth area
KHK W 002 grade 2Rotating planeStandard full depth20˚CAC702(Formerly AℓBC2)(Hub of H9 shape is FC200)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
Teeth induction hardened afterthermal refining
Shaft (ground portion)
AGF
Datum reference surfacefor gear cutting and grinding
Outside dia. Neck dia. Shaft dia. NOTE 1 Weight(kg)
Catalog No.Q R S60 36 50 7.80 KWG5-R1
Hub width (R) Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F F' G (H) ( I ) J Surface durability Surface durability
2323232323
1212121212
7070707070
――
(25)(25)(26)
――
(115)(140)(162)
7587.5
100115125
108 168 239 343 421
11.1 17.2 24.4 35.0 42.9
0.22~0.350.22~0.350.22~0.350.22~0.350.22~0.35
3.304.405.407.70
10.0
AGF5-20R1AGF5-25R1AGF5-30R1AGF5-36R1AGF5-40R1
―――
―――
353535
101010
(195)(205)(255)
145150175
598 646 913
61.0 65.9 93.1
0.22~0.350.22~0.350.22~0.35
5.105.306.50
AGF5-48R1AGF5-50R1AGF5-60R1
Outside dia. Neck dia. Shaft dia. NOTE 1 Weight(kg)
Catalog No.Q R S72 44 60 8.20 KWG6-R1
Hub width (R) Hub width (L) Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F F' G (H) ( I ) J Surface durability Surface durability
23232323―
12121212―
7575757540
――
(30)(30)12
――
(135)(172)(190)
90105120138150
167 259 368 528 648
17.0 26.4 37.6 53.8 66.1
0.24~0.370.24~0.370.24~0.370.24~0.370.24~0.37
4.507.209.10
13.06.30
AGF6-20R1AGF6-25R1AGF6-30R1AGF6-36R1AGF6-40R1
―――
―――
404040
121212
(240)(250)(310)
174180210
920 994
1410
93.8 101 143
0.24~0.370.24~0.370.24~0.37
7.708.20
10.1
AGF6-48R1AGF6-50R1AGF6-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AGF6-20R1AGF6-25R1AGF6-30R1AGF6-36R1AGF6-40R1AGF6-48R1AGF6-50R1AGF6-60R1
329497696978
1190167018002520
268405572806981
138014802090
208319451641784
111012001680
167259368528648920994
1410
146227325466572816885
1260
131204290417513735796
1130
110173248355436628676969
Wor
mG
ear
Pair
SWG.AG
SWG Ground Worms, AG Worm Wheels
■ Module 1 Ground Worms
320
■ Module 1 Worm Wheels
CAUTION: The root area of teeth on worms is very hard due to heat treatment. Extra caution is urged for any secondary operations. This caution applied especially to remachining the bore of W2 shape worms.
■ Module 1.5 Ground Worms
■ Module 1.5 Worm Wheels
■ AG1 Allowable Worm Wheel Torques (N.m)
W2 ShapeW1 Shape
1~1.5AxialModules
Wor
mG
ear
Pair
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG1-R1SWG1-R2
m112
3°35'7°08'
RR
W2W2
88
――
1616
1818
2020
――
――
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1
2010301540
m1
2020303040
12121
3°35'7°08'3°35'7°08'3°35'
RRRRR
H1H1H1H1H1
66668
1616202026
2020303040
2222323242
2323333343
1010101010
AG1-50R1AG1-60R1
5060
5060
11
3°35'3°35'
RR
H1H1
810
3035
5060
5262
5363
1010
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG1.5-R1SWG1.5-R2
m1.512
3°26'6°51'
RR
W1W1
1010
2020
2525
2828
3030
1010
――
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1
2010301540
m1.5
2020303040
12121
3°26'6°51'3°26'6°51'3°26'
RRRRR
H1H1H1H1H1
88
101012
2222303035
3030454560
3333484863
34.534.549.549.564.5
1414141414
AG1.5-50R1AG1.5-60R1
5060
5060
11
3°26'3°26'
RR
H1H1
1212
4550
7590
7893
79.594.5
1414
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1AG1-50R1AG1-60R1
3.353.317.087.03
12.118.325.6
2.792.695.985.84
10.215.521.8
2.232.064.844.568.43
12.918.1
1.831.684.053.727.12
10.915.4
1.631.483.633.336.389.87
14.1
1.501.353.313.035.869.09
12.9
1.301.152.922.635.137.95
11.4
Wor
mG
ear
Pair
SWG.AG
Ground Worms, Worm Wheels
321
NOTE 2: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
H1 Shape
NOTE 1: The W2 shape worms are supplied with set screws.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary operations
Reference section of gearGear teeth
SWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚S45CTeeth induction hardened
48~53HRC
Ground BorePossible except tooth area
AGKHK W 002 grade 2Rotating planeStandard full depth20˚CAC702 (Formerly JIS AℓBC2)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
■ AG1.5 Allowable Worm Wheel Torques (N.m)
Black oxide except ground surfaces
Datum reference surfacefor gear cutting and grinding
Total length Screw NOTE 1 Weight(kg)
Catalog No.R Size S3232
M4M4
55
0.050.05
SWG1-R1SWG1-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1010101010
2020202020
―――――
―――――
18.0 18.0 23.0 23.0 28.0
1.83 1.68 4.05 3.72 7.12
0.19 0.17 0.41 0.38 0.73
0.08~0.190.08~0.190.08~0.190.08~0.190.08~0.19
0.050.050.080.080.15
AG1-20R1AG1-20R2AG1-30R1AG1-30R2AG1-40R1
1010
2020
――
――
33.0 38.0
10.9 15.4
1.11 1.57
0.08~0.190.08~0.19
0.230.32
AG1-50R1AG1-60R1
Total length Screw Weight(kg)
Catalog No.R Size S4040
――
――
0.090.09
SWG1.5-R1SWG1.5-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1010101010
2424242424
―――――
―――――
27.5 27.5 35.0 35.0 42.5
5.30 4.87
11.7 10.8 20.6
0.54 0.50 1.19 1.10 2.10
0.10~0.210.10~0.210.10~0.210.10~0.210.10~0.21
0.0990.0990.220.220.36
AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1
1010
2424
――
――
50.0 57.5
31.6 44.7
3.22 4.55
0.10~0.210.10~0.21
0.580.81
AG1.5-50R1AG1.5-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG1.5-20R1AG1.5-20R2AG1.5-30R1AG1.5-30R2AG1.5-40R1AG1.5-50R1AG1.5-60R1
9.849.72
20.820.735.653.875.3
8.187.87
17.517.130.045.463.8
6.405.92
13.913.124.236.951.9
5.304.87
11.710.820.631.644.7
4.684.25
10.49.56
18.328.340.4
4.253.839.408.58
16.625.836.7
3.683.278.287.46
14.622.632.4
SWG.AG
322
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296. ■ AG2 Allowable Worm Wheel Torques (N.m)
W3 ShapeH1 Shape
■ Module 2 Ground Worms
■ Module 2 Worm Wheels
■ Module 2.5 Ground Worms
■ Module 2.5 Worm Wheels
SWG Ground Worms, AG Worm Wheels 2~2.5AxialModules
Wor
mG
ear
Pair
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG2-R1SWG2-R2
m212
3°41'7°21'
RR
W3W3
1212
2525
3131
3535
3232
1515
33
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
NOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG2-20R1AG2-20R2AG2-30R1AG2-30R2AG2-40R1
2010301540
m2
2020303040
12121
3°41'7°21'3°41'7°21'3°41'
RRRRR
H1H1H4H4H4
1212121212
3333404045
4040606080
4444646484
4646666686
1818181818
AG2-50R1AG2-60R1
5060
5060
11
3°41'3°41'
RR
H5H5
1212
5055
100120
104124
106126
1818
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG2.5-R1SWG2.5-R2
m2.512
3°52'7°42'
RR
W3W3
1515
3030
3737
4242
4545
1717
33
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
NOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG2.5-20R1AG2.5-20R2AG2.5-30R1AG2.5-30R2AG2.5-40R1
2010301540
m2.5
2020303040
12121
3°52'7°42'3°52'7°42'3°52'
RRRRR
H1H1H4H4H5
1212121215
3535404045
50507575
100
55558080
105
57.557.582.582.5
107.5
2020202020
AG2.5-50R1AG2.5-60R1
5060
5060
11
3°52'3°52'
RR
H5H5
1515
5560
125150
130155
132.5157.5
2020
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG2-20R1AG2-20R2AG2-30R1AG2-30R2AG2-40R1AG2-50R1AG2-60R1
21.020.744.344.075.8
115160
17.516.837.336.564.096.8
136
13.612.629.627.851.478.4
110
11.210.324.822.843.666.994.6
9.848.93
21.920.138.559.584.9
8.948.05
19.818.034.954.277.2
7.756.89
17.415.730.747.668.1
SWG.AG
Ground Worms, Worm Wheels
323
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 2: Please avoid secondary operations that affect the strength of the joint between CAC702 and FC200. Also, there may be space in the casting between the two materials, but it will not affect the joint strength.
■ AG2.5 Allowable Worm Wheel Torques (N.m)
H4 Shape
H5 Shape*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary operations
Reference section of gearGear teeth
SWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚
Teeth induction hardened
48~53HRC
Ground
Possible except tooth area
AGKHK W 002 grade 2Rotating planeStandard full depth20˚
—
—
—
CutBorePossible
CAUTION: AℓBC2 is aluminum bronze.
Wor
mG
ear
Pair
CAC702(Formerly AℓBC2)(Hub of H4,H5 shape is FC200)S45C
Bore
Black oxide except ground surfaces
Datum reference surfacefor gear cutting and grinding
Total length Screw Weight(kg)
Catalog No.R Size S5050
――
――
0.200.20
SWG2-R1SWG2-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1515151515
3333333333
―――――
―――――
35.5 35.5 45.5 45.5 55.5
11.2 10.3 24.8 22.8 43.6
1.14 1.05 2.53 2.32 4.45
0.11~0.240.11~0.240.11~0.240.11~0.240.11~0.24
0.290.290.550.550.85
AG2-20R1AG2-20R2AG2-30R1AG2-30R2AG2-40R1
1515
3333
(8)(11)
(83)(100)
65.5 75.5
66.9 94.6
6.83 9.64
0.11~0.240.11~0.24
0.951.50
AG2-50R1AG2-60R1
Total length Screw Weight(kg)
Catalog No.R Size S6565
――
――
0.400.40
SWG2.5-R1SWG2.5-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1414141414
3434343434
――――
(11)
――――(81)
43.5 43.5 56.0 56.0 68.5
18.3 16.8 40.5 37.2 71.2
1.87 1.72 4.13 3.79 7.26
0.14~0.270.14~0.270.14~0.270.14~0.270.14~0.27
0.400.400.800.801.40
AG2.5-20R1AG2.5-20R2AG2.5-30R1AG2.5-30R2AG2.5-40R1
1414
3434
(12)(12)
(106)(130)
81.0 93.5
109 154
11.1 15.7
0.14~0.270.14~0.27
2.102.30
AG2.5-50R1AG2.5-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG2.5-20R1AG2.5-20R2AG2.5-30R1AG2.5-30R2AG2.5-40R1AG2.5-50R1AG2.5-60R1
34.634.273.272.7
125189265
28.527.461.059.6
105158222
22.320.648.345.584.0
128180
18.316.840.537.271.2
109154
16.014.535.532.662.596.7
138
14.613.132.229.457.088.5
126
12.511.128.125.349.576.7
110
324
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.
W3 ShapeH1 Shape
SWG.AG
■ AG3 Allowable Worm Wheel Torques (N.m)
■ Module 3 Ground Worms
■ Module 3 Worm Wheels
■ Module 4 Ground Worms
■ Module 4 Worm Wheels
SWG Ground Worms, AG Worm Wheels 3~4AxialModules
Wor
mG
ear
Pair
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG3-R1SWG3-R2SWG3-R3
m3123
3°54'7°46'
11°34'
RRR
W3W3W3
161616
353535
444444
505050
505050
202020
444
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
NOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG3-20R1AG3-20R2AG3-30R1AG3-30R2AG3-30R3
2010301510 m3
2020303030
12123
3°54'7°46'3°54'7°46'
11°34'
RRRRR
H1H1H4H4H4
2020202020
5050555555
6060909090
6666969696
6969999999
2525252525
AG3-40R1AG3-45R3AG3-50R1AG3-60R1
40155060
40455060
1311
3°54'11°34'
3°54'3°54'
RRRR
H5H5H5H5
20202020
65707585
120135150180
126141156186
129144159189
25252525
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG4-R1SWG4-R2SWG4-R3
m4123
3°41'7°21'
10°57'
RRR
W3W3W3
222222
505050
626262
707070
707070
252525
555
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
NOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG4-20R1AG4-20R2AG4-30R1AG4-30R2AG4-30R3
2010301510 m4
2020303030
12123
3°41'7°21'3°41'7°21'
10°57'
RRRRR
H1H1H4H4H4
2020202020
6060656565
8080
120120120
8888
128128128
9292
132132132
3030303030
AG4-40R1AG4-45R3AG4-50R1AG4-60R1
40155060
40455060
1311
3°41'10°57'
3°41'3°41'
RRRR
H5H5H5H5
20202020
809090
100
160180200240
168188208248
172192212252
30303030
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG3-20R1AG3-20R2AG3-30R1AG3-30R2AG3-30R3AG3-40R1AG3-45R3AG3-50R1AG3-60R1
59.558.7
126125129215274325455
48.846.9
104.3102103179224270380
38.035.182.477.677.1
143171219308
30.928.468.462.862.4
120138185261
27.024.559.955.153.8
106121163233
24.722.254.549.748.796.4
109150213
20.918.546.942.240.682.592.6
128183
Ground Worms, Worm Wheels
325
■ AG4 Allowable Worm Wheel Torques (N.m)
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
H4 Shape
H5 Shape
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
NOTE 2: Please avoid secondary operations that affect the strength of the joint between CAC702 and FC200. Also, there may be space in the casting between the two materials, but it will not affect the joint strength.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary operations
Reference section of gearGear teeth
SWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚
Teeth induction hardened
48~53HRC
Ground
Possible except tooth area
AGKHK W 002 grade 2Rotating planeStandard full depth20˚
—
—
—
CutBorePossible
CAUTION: AℓBC2 is aluminum bronze.
SWG.AG
Wor
mG
ear
Pair
CAC702(Formerly AℓBC2)(Hub of H4,H5 shape is FC200)S45C
Bore
Black oxide except ground surfaces
Datum reference surfacefor gear cutting and grinding
Total length Screw Weight(kg)
Catalog No.R Size S747474
―――
―――
0.600.600.60
SWG3-R1SWG3-R2SWG3-R3
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1818181818
4343434343
―――――
―――――
52.0 52.0 67.0 67.0 67.0
30.9 28.4 68.4 62.8 62.4
3.15 2.90 6.97 6.40 6.36
0.16~0.290.16~0.290.16~0.290.16~0.290.16~0.29
0.750.751.401.401.40
AG3-20R1AG3-20R2AG3-30R1AG3-30R2AG3-30R3
18181818
43434343
(10)(11)(15)(15)
(103)(120)(130)(155)
82.0 89.5 97.0
112
120 138 185 261
12.3 14.1 18.8 26.6
0.16~0.290.16~0.290.16~0.290.16~0.29
2.302.503.204.30
AG3-40R1AG3-45R3AG3-50R1AG3-60R1
Total length Screw Weight(kg)
Catalog No.R Size S
100100100
―――
―――
1.701.701.70
SWG4-R1SWG4-R2SWG4-R3
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
2020202020
5050505050
―――――
―――――
71.0 71.0 91.0 91.0 91.0
58.2 53.5
129 118 117
5.945.45
13.1 12.1 12.0
0.19~0.320.19~0.320.19~0.320.19~0.320.19~0.32
1.501.502.502.502.50
AG4-20R1AG4-20R2AG4-30R1AG4-30R2AG4-30R3
20202020
50505050
(15)(16)(16)(17)
(133)(153)(173)(210)
111121131151
226 259 347 491
23.1 26.4 35.4 50.0
0.19~0.320.19~0.320.19~0.320.19~0.32
4.405.506.508.50
AG4-40R1AG4-45R3AG4-50R1AG4-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG4-20R1AG4-20R2AG4-30R1AG4-30R2AG4-30R3AG4-40R1AG4-45R3AG4-50R1AG4-60R1
115114244242250417531630881
93.690.0
200196198343430519730
72.767.2
158148147274326418589
58.253.5
129118117226259347491
51.146.4
114104102200229309441
45.741.2
10192.290.2
179202277395
38.434.186.377.674.7
152170236337
326
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.
W3 Shape
SWG.AG
■ AG5 Allowable Worm Wheel Torques (N.m)
■ Module 5 Ground Worms
■ Module 5 Worm Wheels
■ Module 6 Ground Worms
■ Module 6 Worm Wheels
SWG Ground Worms, AG Worm Wheels 5~6AxialModules
Wor
mG
ear
Pair
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG5-R1SWG5-R2
m512
4°05'8°08'
RR
W3W3
2525
5656
7070
8080
8585
3030
55
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
NOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG5-20R1AG5-20R2AG5-30R1AG5-30R2AG5-40R1
2010301540
m5
2020303040
12121
4°05'8°08'4°05'8°08'4°05'
RRRRR
H4H4H5H5H5
2222222222
75757575
110
100100150150200
110110160160210
115115165165215
3535353535
AG5-50R1AG5-60R1
5060
5060
11
4°05'4°05'
RR
H5H5
2222
120130
250300
260310
265315
3535
Catalog No. Axialmodule Number of start Lead angle Hand of tread Shape
Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SWG6-R1SWG6-R2
m612
4°17'8°32'
RR
W3W3
3030
6363
8080
9292
100100
3535
55
Catalog No. Reduction ratio Transverse module No. of teeth Number of start Helix angle Hand of tread Shape
NOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EAG6-20R1AG6-20R2AG6-30R1AG6-30R2AG6-40R1
2010301540
m6
2020303040
12121
4°17'8°32'4°17'8°32'4°17'
RRRRR
H4H4H5H5H5
2525252525
8585
100100120
120120180180240
132132192192252
138138198198258
4040404040
AG6-50R1AG6-60R1
5060
5060
11
4°17'4°17'
RR
H5H5
2525
130150
300360
312372
318378
4040
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG5-20R1AG5-20R2AG5-30R1AG5-30R2AG5-40R1AG5-50R1AG5-60R1
202200427425731
11101550
163157348340597903
1270
127117275259478729
1030
10193.2
224206394605855
88.480.2
196180346534763
79.071.1
175159309479682
65.558.1
147132259402575
Ground Worms, Worm Wheels
327
■ AG6 Allowable Worm Wheel Torques (N.m)
H4 Shape
H5 Shape*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Specifications
Catalog No.
Normal pressure angle
Precision grade
MaterialHeat treatmentTooth hardnessSurface treatmentTooth surface finish
Secondary operations
Reference section of gearGear teeth
SWGKHK W 001 grade 2AxialJIS 3 type Standard full depth
20˚S45CTeeth induction hardened
48~53HRCBlack oxide except ground surface
Ground BorePossible except tooth area
AGKHK W 002 grade 2Rotating planeStandard full depth20˚CAC702(Formerly AℓBC2)(Hub of H4, H5 shape is FC200)
—
—
—
Cut BorePossible
CAUTION: AℓBC2 is aluminum bronze.
SWG.AG
Wor
mG
ear
Pair
Datum reference surfacefor gear cutting and grinding
Total length Screw Weight(kg)
Catalog No.R Size S
120120
――
――
2.802.80
SWG5-R1SWG5-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
2525252525
6060606060
――
(21)(21)(23)
――
(120)(120)(168)
85.0 85.0
110110135
101 93.2
224 206 394
10.3 9.50
22.9 21.0 40.2
0.22~0.350.22~0.350.22~0.350.22~0.350.22~0.35
2.702.705.005.008.00
AG5-20R1AG5-20R2AG5-30R1AG5-30R2AG5-40R1
2525
6060
(23)(24)
(215)(260)
160185
605 855
61.7 87.1
0.22~0.350.22~0.35
13.017.0
AG5-50R1AG5-60R1
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
NOTE 2: Please avoid secondary operations that affect the strength of the joint between CAC702 and FC200. Also, there may be space in the casting between the two materials, but it will not affect the joint strength.
Total length Screw Weight(kg)
Catalog No.R Size S
140140
――
――
4.304.30
SWG6-R1SWG6-R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
3030303030
7070707070
――
(26)(26)(28)
――
(142)(142)(200)
100100130130160
157 145 346 321 609
16.0 14.8 35.3 32.8 62.1
0.24~0.370.24~0.370.24~0.370.24~0.370.24~0.37
5.505.508.808.80
14.0
AG6-20R1AG6-20R2AG6-30R1AG6-30R2AG6-40R1
3030
7070
(30)(30)
(258)(312)
190220
935 1320
95.3 135
0.24~0.370.24~0.37
23.029.0
AG6-50R1AG6-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200 1800
AG6-20R1AG6-20R2AG6-30R1AG6-30R2AG6-40R1AG6-50R1AG6-60R1
315314666668
114017202410
252244538532923
14001960
196182424403738
11301580
157145346321609935
1320
135124300278528816
1170
121110267246472733
1040
99.689.3
224203394611875
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: SUW worms may also be used to mate with BG and CG worm wheels.CAUTION: These worm wheels are profile shifted to create the proper center distance. NOTE 1: The material of BG1-40R1 and 50R1 is CAC502A.
328
Material: CAC406C NOTE 1
■ BG0.8 Allowable Worm Wheel Torques (N.m)
W2 ShapeHA Shape
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH8 M N O P Q Q'SW0.8-R1SW0.8-R2
m0.812
3°17'6°34'
RR
W2W2
66
――
1414
15.615.6
――
――
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG0.8-20R1BG0.8-20R2BG0.8-30R1BG0.8-30R2BG0.8-40R1BG0.8-50R1
201030154050
m0.8
202030304050
121211
3°17'6°34'3°17'6°34'3°17'3°17'
RRRRRR
HAHAHAHAHAHA
555568
121218182025
16.0316.1124.0424.1632.0540.06
――――――
17.617.625.625.633.641.6
999999
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH8 M N O P Q Q'SW1-R1SW1-R2
m112
3°35'7°11'
RR
W2W2
66
――
1616
1818
――
――
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG1-20R1BG1-20R2 BG1-30R1BG1-30R2BG1-40R1 NOTE 1
BG1-50R1 NOTE 1
201030154050
m1
202030304050
121211
3°35'7°11'3°35'7°11'3°35'3°35'
RRRRRR
H1H1H1H1H1H1
666688
161620202630
20.0520.1630.0730.2440.0850.1
222232324252
232333334353
101010101010
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeNOTE 4
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG1-60R1CG1-80R1CG1-100R1CG1-120R1
6080
100120
m1
6080
100120
1111
3°35'3°35'3°35'3°35'
RRRR
HBHBH2H2
10101010
30354040
60.1280.16
100.2120.24
6282
102122
6383
103123
10101010
Worm rpm
Catalog No.30 100 300 600 900 1200
BG0.8-20R1BG0.8-20R2BG0.8-30R1BG0.8-30R2BG0.8-40R1BG0.8-50R1BG0.8-60R1
1.05 1.06 2.23 2.24 3.81 5.76 8.06
0.88 0.86 1.89 1.87 3.24 4.90 6.88
0.71 0.66 1.53 1.46 2.67 4.07 5.73
0.58 0.54 1.29 1.20 2.26 3.47 4.90
0.52 0.48 1.15 1.07 2.02 3.13 4.46
0.48 0.44 1.06 0.98 1.87 2.90 4.12
SW Worms, BG.CG Worm Wheels 0.8~1Normal Modules
■ Module 1 CG Worm Wheels
■ Module 0.8 Worms
■ Module 1 Worms
■ Module 1 BG Worm Wheels
■ Module 0.8 Worm Wheels
Wor
mG
ear
Pair
SW.BG.CG
■ BG1 Allowable Worm Wheel Torques (N.m) ■ CG1 Allowable Worm Wheel Torques (N.m)
NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
Worms, Worm Wheels
329
NOTE 4: The H2 shape worm wheels have cast lightening holes in the web.
H1 Shape
HB Shape
H2 Shape NOTE 5
NOTE 2: The W2 shape worms are supplied with a set screw.
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Total length Screw NOTE 2 Weight(kg) Catalog No.
R Size S3030
M4M4
55
0.030.03
SW0.8-R1SW0.8-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg) Catalog No.
F G J Surface durability Surface durability
999999
181818181818
151519192327
0.880.86 1.89 1.87 3.244.90
0.0900.088 0.190.19 0.330.50
0.04~0.220.04~0.220.04~0.220.04~0.220.04~0.220.04~0.22
0.020.020.050.050.080.12
BG0.8-20R1BG0.8-20R2BG0.8-30R1BG0.8-30R2BG0.8-40R1BG0.8-50R1
Total length Screw Weight(kg)
Catalog No.R Size S3232
M4M4
55
0.040.04
SW1-R1SW1-R2
Hub width Total length Mounting distance Allowable torque(N・m) Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
101010101010
202020202020
181823232833
1.581.54 3.38 3.35 5.79 8.76
0.160.16 0.34 0.34 0.59 0.89
0.06~0.240.06~0.240.06~0.240.06~0.240.06~0.240.06~0.24
0.040.040.090.090.150.20
BG1-20R1BG1-20R2BG1-30R1BG1-30R2BG1-40R1BG1-50R1
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
10101010
20202020
(6)(6)(6)(6)
(51)(70)(91)
(111)
38485868
7.3912.619.026.7
0.751.28 1.94 2.73
0.06~0.240.06~0.240.06~0.240.06~0.24
0.200.300.400.60
CG1-60R1CG1-80R1CG1-100R1CG1-120R1
Worm rpm
Catalog No.30 100 300 600 900 1200
CG1-60R1CG1-80R1CG1-100R1CG1-120R1
8.6914.721.930.5
7.3912.619.026.7
6.1410.516.022.5
5.249.11
13.919.6
4.788.30
12.718.0
4.397.72
11.916.7
Worm rpm
Catalog No.30 100 300 600 900 1200
BG1-20R1BG1-20R2BG1-30R1BG1-30R2BG1-40R1BG1-50R1
1.89 1.90 4.00 4.03 6.85
10.3
1.58 1.54 3.38 3.35 5.79 8.76
1.26 1.18 2.74 2.62 4.76 7.27
1.04 0.97 2.29 2.14 4.03 6.18
0.92 0.85 2.05 1.91 3.61 5.58
0.85 0.78 1.87 1.74 3.31 5.14
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal planeJIS 3 type Standard full depth
20˚S45C—
Less than 194HBBlack oxideThread rolledBorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth20˚ 20˚CAC406C( Formerly BC6)CAC502A(Formerly PBC2) FC200
Cut CutBorePossible
BorePossible
Wor
mG
ear
Pair
SW.BG.CG
—
—
—
—
—
—
Datum reference surfacefor gear cutting
330
Material: CAC502A NOTE 2
Material: CAC502A NOTE 2
■ BG1.25 Allowable Worm Wheel Torques (N.m)
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.
CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.
CAUTION: SUW worms may also be used to mate with BG and CG worm wheels.CAUTION: These worm wheels are profile shifted to create the proper center distance.NOTE 1: Material of BG1.25-20R1 and 20R2, BG1.5-20R1, 20R2 is CAC406C.
W2 ShapeW1 Shape
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH8 M N O P Q Q'SW1.25-R1SW1.25-R2
m1.2512
3°25'6°50'
RR
W2W2
88
――
2121
23.523.5
――
――
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG1.25-20R1BG1.25-20R2BG1.25-30R1BG1.25-30R2BG1.25-40R1BG1.25-50R1
201030154050
m1.25
202030304050
121211
3°25'6°50'3°25'6°50'3°25'3°25'
RRRRRR
H1H1H1H1H1H1
666688
202025253040
25.0425.1837.5737.7750.0962.61
27.527.5404052.565
28.7528.7541.2541.2553.7566.25
111111111111
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW1.5-R1SW1.5-R2
m1.512
3°26'6°54'
RR
W1W1
88
2020
2525
2828
3030
1010
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG1.5-20R1BG1.5-20R2BG1.5-30R1BG1.5-30R2BG1.5-40R1BG1.5-50R1
201030154050
m1.5
202030304050
121211
3°26'6°54'3°26'6°54'3°26'3°26'
RRRRRR
H1H1H1H1H1H1
88
10101212
222230303040
30.0530.2245.0845.3360.1175.13
333348486378
34.534.549.549.564.579.5
121212121214
Worm rpm
Catalog No.30 100 300 600 900 1200
BG1.25-20R1BG1.25-20R2BG1.25-30R1BG1.25-30R2BG1.25-40R1BG1.25-50R1
3.19 3.19 6.75 6.77
11.5 17.4
2.65 2.58 5.67 5.60 9.71
14.7
2.10 1.96 4.56 4.33 7.92
12.1
1.72 1.60 3.81 3.54 6.70
10.3
1.53 1.40 3.40 3.16 5.98 9.25
1.40 1.27 3.09 2.85 5.47 8.49
SW Worms, BG.CG Worm Wheels 1.25~1.5Normal Modules
■ Module 1.5 CG Worm Wheels
■ Module 1.25 Worms
■ Module 1.5 Worms
■ Module 1.5 BG Worm Wheels
■ Module 1.25 Worm Wheels
Wor
mG
ear
Pair
SW.BG.CG
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeNOTE 4
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG1.5-30R1CG1.5-40R1CG1.5-50R1CG1.5-60R1CG1.5-80R1CG1.5-100R1
3040506080
100
m1.5
3040506080
100
111111
3°26'3°26'3°26'3°26'3°26'3°26'
RRRRRR
H1H1HBHBH2H2
101212121515
303040405050
45.0860.1175.1390.16
120.22150.27
48637893
123153
49.564.579.594.5
124.5154.5
121214141414
■ BG1.5 Allowable Worm Wheel Torques(N.m) ■ CG1.5 Allowable Worm Wheel Torques (N.m)
NOTE 3: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
Worms, Worm Wheels
331
NOTE 4: The H2 shape worm gears have cast lightening holes in the web.
H1 Shape
HB Shape
H2 Shape NOTE 5
NOTE 2: W2 shape worms are supplied with a set screw.
*CS has a sand mold casing finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Total length Screw NOTE 2 Weight(kg)
Catalog No.R Size S3737
M5M5
55
0.090.09
SW1.25-R1SW1.25-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
999999
202020202020
232329.2529.2535.541.75
2.65 2.58 5.67 5.60 9.71
14.7
0.270.26 0.58 0.57 0.99 1.50
0.08~0.260.08~0.260.08~0.260.08~0.260.08~0.260.08~0.26
0.0650.0650.140.140.230.37
BG1.25-20R1BG1.25-20R2BG1.25-30R1BG1.25-30R2BG1.25-40R1BG1.25-50R1
Total length Screw Weight(kg)
Catalog No.R Size S4040
――
――
0.120.12
SW1.5-R1SW1.5-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
101010101010
222222222224
27.527.5353542.550
3.96 3.85 8.47 8.37
14.5 25.6
0.400.39 0.86 0.85 1.48 2.61
0.08~0.260.08~0.260.08~0.260.08~0.260.08~0.260.08~0.26
0.100.100.220.220.320.58
BG1.5-20R1BG1.5-20R2BG1.5-30R1BG1.5-30R2BG1.5-40R1BG1.5-50R1
Worm rpm
Catalog No.30 100 300 600 900 1200
BG1.5-20R1BG1.5-20R2BG1.5-30R1BG1.5-30R2BG1.5-40R1BG1.5-50R1
4.76 4.75
10.1 10.1 17.2 30.4
3.96 3.85 8.47 8.37
14.5 25.6
3.10 2.89 6.72 6.40
11.7 20.8
2.56 2.38 5.67 5.26 9.96
17.8
2.27 2.08 5.03 4.67 8.86
16.0
2.06 1.87 4.55 4.20 8.04
14.6
Worm rpm
Catalog No.30 100 300 600 900 1200
CG1.5-30R1CG1.5-40R1CG1.5-50R1CG1.5-60R1CG1.5-80R1CG1.5-100R1
6.0410.318.225.543.164.4
5.088.71
15.421.636.855.6
4.037.01
12.517.630.145.8
3.405.98
10.715.126.340.1
3.025.319.59
13.723.836.4
2.734.838.74
12.421.933.6
Datum reference surfacefor gear cutting
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal planeJIS 3 type Standard full depth
20˚S45C
Less than 194HBBlack oxideThread rolledBorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth20˚ 20˚CAC406C( Formerly BC6)CAC502A(Formerly PBC2) FC200
Cut CutBorePossible
BorePossible
Wor
mG
ear
Pair
SW.BG.CG
— —
—
—
—
—
—
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 3 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
101010101010
222224242424
――(6)(4)(9)(7)
――(62)(79)
(112)(138)
3542.55057.572.587.5
5.088.71
15.421.6 36.8 55.6
0.520.89 1.57 2.20 3.76 5.67
0.08~0.260.08~0.260.08~0.260.08~0.260.08~0.260.08~0.26
0.170.250.420.500.751.00
CG1.5-30R1CG1.5-40R1CG1.5-50R1CG1.5-60R1CG1.5-80R1CG1.5-100R1
■ Module 2 Worms
332
■ Module 2 BG Worm Wheels
■ Module 2 CG Worm Wheels
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: SUW worms may also be used to mate with BG and CG worm wheels.CAUTION: These worm wheels are profile shifted to create the proper center distance.
W1 Shape
H1 Shape
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW2-R1SW2-R2
m212
3°42'7°25'
RR
W1W1
1212
2525
3131
3535
3232
1414
――
SW2-L1SW2-L2
m212
3°42'7°25'
LL
W1W1
1212
2525
3131
3535
3232
1414
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG2-20R1BG2-20R2
2010
m2
2020
12
3°42'7°25'
RR
H1H1
1212
3333
40.0840.34
4444
4646
2222
BG2-20L1BG2-20L2
2010
2020
12
3°42'7°25'
LL
H1H1
1212
3333
40.0840.34
4444
4646
2222
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG2-20R1CG2-20R2CG2-30R1CG2-30R2CG2-40R1
2010301540
m2
2020303040
12121
3°42'7°25'3°42'7°25'3°42'
RRRRR
H1H1H1H1H1
1212121212
3333404045
40.0840.3460.1360.5180.17
4444646484
4646666686
2222222222
CG2-50R1CG2-50R2CG2-60R1
502560
505060
121
3°42'7°25'3°42'
RRR
HBHBHB
121212
484860
100.21100.84120.25
104104124
106106126
222222
CG2-20L1CG2-20L2CG2-30L1CG2-30L2CG2-40L1
2010301540
2020303040
12121
3°42'7°25'3°42'7°25'3°42'
LLLLL
H1H1H1H1H1
1212121212
3333404045
40.0840.3460.1360.5180.17
4444646484
4646666686
2222222222
CG2-50L1CG2-50L2CG2-60L1
502560
505060
121
3°42'7°25'3°42'
LLL
HBHBHB
121212
484860
100.21100.84120.25
104104124
106106126
222222
Wor
mG
ear
Pair
SW.BG.CG
2Normal ModuleSW Worms, BG.CG Worm Wheels
■ CG2 Allowable Worm Wheel Torques (N.m) ■ BG2 Allowable Worm Wheel Torques (N.m)
Worms, Worm Wheels
333
HB Shape
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Worm rpm
Catalog No.30 100 300 600 900 1200
BG2-20R1
BG2-20R2
12.3
12.3
10.2
10.0
8.00
7.51
6.59
6.15
5.78
5.32
5.25
4.80
Total length Screw Weight(kg)
Catalog No.R Size S4646
――
――
0.200.20
SW2-R1SW2-R2
4646
――
――
0.200.20
SW2-L1SW2-L2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1313
3535
35.535.5
10.210.0
1.051.02
0.10~0.280.10~0.28
0.30.3
BG2-20R1BG2-20R2
1313
3535
35.535.5
10.210.0
1.05 1.02
0.10~0.280.10~0.28
0.30.3
BG2-20L1BG2-20L2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1313131313
3535353535
―――――
―――――
35.535.545.545.555.5
6.156.00
13.113.122.5
0.630.61 1.34 1.33 2.30
0.10~0.280.10~0.280.10~0.280.10~0.280.10~0.28
0.250.250.530.530.90
CG2-20R1CG2-20R2CG2-30R1CG2-30R2CG2-40R1
131313
353535
(7)(7)(7)
(88)(88)
(108)
65.565.575.5
34.1 34.0 47.9
3.48 3.46 4.89
0.10~0.280.10~0.280.10~0.28
1.001.001.30
CG2-50R1CG2-50R2CG2-60R1
1313131313
3535353535
―――――
―――――
35.535.545.545.555.5
6.156.00
13.113.122.5
0.630.61 1.34 1.33 2.30
0.10~0.280.10~0.280.10~0.280.10~0.280.10~0.28
0.250.250.530.530.90
CG2-20L1CG2-20L2CG2-30L1CG2-30L2CG2-40L1
131313
353535
(7)(7)(7)
(88)(88)
(108)
65.565.575.5
34.1 34.0 47.9
3.483.46 4.89
0.10~0.280.10~0.280.10~0.28
1.001.001.30
CG2-50L1CG2-50L2CG2-60L1
Worm rpm
Catalog No.30 100 300 600 900 1200
CG2-20R1CG2-20R2CG2-30R1CG2-30R2CG2-40R1CG2-50R1CG2-50R2CG2-60R1
7.387.40
15.615.726.740.340.756.4
6.156.00
13.113.122.534.134.047.9
4.804.51
10.49.96
18.127.626.938.9
3.953.698.748.15
15.423.622.433.3
3.473.197.707.18
13.5521.019.629.9
3.152.886.966.45
12.319.117.827.2
Wor
mG
ear
Pair
SW.BG.CG
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal planeJIS 3 type Standard full depth
14˚30'S45C—
Less than 194HBBlack oxideThread rolledBorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth14˚30' 14˚30'CAC502A(Formerly PBC2) FC200— —
— —
— —
Cut CutBorePossible
BorePossible
Datum reference surfacefor gear cutting
334
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: SUW worms may also be used to mate with BG and CG worm wheels.CAUTION: These worm wheels are profile shifted to create the proper center distance.
W1 Shape
H1 Shape
■ Module 2 .5 Worms
■ Module 2.5 BG Worm Wheels
■ Module 2.5 CG Worm Wheels
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW2.5-R1SW2.5-R2
m2.512
3°52'7°46'
RR
W1W1
1515
3030
3737
4242
4545
1818
――
SW2.5-L1SW2.5-L2
m2.512
3°52'7°46'
LL
W1W1
1515
3030
3737
4242
4545
1818
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG2.5-20R1BG2.5-20R2
2010
m2.5
2020
12
3°52'7°46'
RR
H1H1
1212
3535
50.1150.46
5555
57.557.5
2222
BG2.5-20L1BG2.5-20L2
2010
2020
12
3°52'7°46'
LL
H1H1
1212
3535
50.1150.46
5555
57.557.5
2222
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG2.5-20R1CG2.5-20R2CG2.5-30R1CG2.5-30R2CG2.5-40R1
2010301540
m2.5
2020303040
12121
3°52'7°46'3°52'7°46'3°52'
RRRRR
H1H1HBHBHB
1212121215
3535404045
50.1150.4675.1775.68
100.23
55558080
105
57.557.582.582.5
107.5
2222222222
CG2.5-50R1CG2.5-50R2CG2.5-60R1
502560
505060
121
3°52'7°46'3°52'
RRR
HBHBHB
151515
505055
125.29126.16150.34
130130155
132.5132.5157.5
222222
CG2.5-20L1CG2.5-20L2CG2.5-30L1CG2.5-30L2CG2.5-40L1
2010301540
2020303040
12121
3°52'7°46'3°52'7°46'3°52'
LLLLL
H1H1HBHBHB
1212121215
3535404045
50.1150.4675.1775.68
100.23
55558080
105
57.557.582.582.5
107.5
2222222222
CG2.5-50L1CG2.5-50L2CG2.5-60L1
502560
505060
121
3°52'7°46'3°52'
LLL
HBHBHB
151515
505055
125.29126.16150.34
130130155
132.5132.5157.5
222222
Wor
mG
ear
Pair
SW.BG.CG
2.5Normal ModuleSW Worms, BG.CG Worm Wheels
■ CG2.5 Allowable Worm Wheel Torques (N.m)■ BG2.5 Allowable Worm Wheel Torques (N.m)
Worms, Worm Wheels
335
HB Shape
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Total length Screw Weight(kg)
Catalog No.R Size S6363
――
――
0.400.40
SW2.5-R1SW2.5-R2
6363
――
――
0.400.40
SW2.5-L1SW2.5-L2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1414
3636
43.543.5
17.717.3
1.811.76
0.13~0.310.13~0.31
0.400.40
BG2.5-20R1BG2.5-20R2
1414
3636
43.543.5
17.717.3
1.81 1.76
0.13~0.310.13~0.31
0.400.40
BG2.5-20L1BG2.5-20L2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1414141414
3636363636
――
(10)(10)
(9)
――(60)(60)(86)
43.543.5565668.5
10.610.422.8 22.5 39.0
1.091.06 2.32 2.30 3.98
0.13~0.310.13~0.310.13~0.310.13~0.310.13~0.31
0.400.400.800.801.40
CG2.5-20R1CG2.5-20R2CG2.5-30R1CG2.5-30R2CG2.5-40R1
141414
363636
(9)(9)(9)
(110)(110)(136)
818193.5
59.0 58.6 82.9
6.02 5.98 8.46
0.13~0.310.13~0.310.13~0.31
1.901.902.30
CG2.5-50R1CG2.5-50R2CG2.5-60R1
1414141414
3636363636
――
(10)(10)
(9)
――(60)(60)(86)
43.543.5565668.5
10.610.422.8 22.5 39.0
1.09 1.06 2.32 2.30 3.98
0.13~0.310.13~0.310.13~0.310.13~0.310.13~0.31
0.400.400.800.801.40
CG2.5-20L1CG2.5-20L2CG2.5-30L1CG2.5-30L2CG2.5-40L1
141414
363636
(9)(9)(9)
(110)(110)(136)
818193.5
59.0 58.6 82.9
6.02 5.98 8.46
0.13~0.310.13~0.310.13~0.31
1.901.902.30
CG2.5-50L1CG2.5-50L2CG2.5-60L1
Worm rpm
Catalog No.30 100 300 600 900 1200
BG2.5-20R1
BG2.5-20R2
21.5
21.5
17.7
17.3
13.8
13.0
11.4
10.6
9.94
9.14
9.07
8.27
Worm rpm
Catalog No.30 100 300 600 900 1200
CG2.5-20R1CG2.5-20R2CG2.5-30R1CG2.5-30R2CG2.5-40R1CG2.5-50R1CG2.5-50R2CG2.5-60R1
12.912.927.327.546.770.671.198.8
10.610.422.822.539.059.058.682.9
8.307.78
18.017.231.347.846.467.3
6.836.36
15.114.126.540.738.657.6
5.975.49
13.212.323.336.133.651.5
5.444.96
12.011.121.233.030.747.0
Wor
mG
ear
Pair
SW.BG.CG
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal planeJIS 3 type Standard full depth
20˚S45C—
Less than 194HBBlack oxideCutBorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth20˚ 20˚CAC502A(Formerly PBC2) FC200— —
— —
— —
Cut CutBorePossible
BorePossible
Datum reference surfacefor gear cutting
336
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: SUW worms may also be used to mate with BG and CG worm gears.CAUTION: These worm wheels are profile shifted to create the proper center distance.
W1 Shape
H1 Shape
■ Module 3 Worms
■ Module 3 BG Worm Wheels
■ Module 3 CG Worm Wheels
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW3-R1SW3-R2
m312
3°55'7°50'
RR
W1W1
1616
3535
4444
5050
5050
2020
――
SW3-L1SW3-L2
m312
3°55'7°50'
LL
W1W1
1616
3535
4444
5050
5050
2020
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG3-20R1BG3-20R2
2010
m3
2020
12
3°55'7°50'
RR
H1H1
2020
5050
60.1460.57
6666
6969
2828
BG3-20L1BG3-20L2
2010
2020
12
3°55'7°50'
LL
H1H1
2020
5050
60.1460.57
6666
6969
2828
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG3-20R1CG3-20R2CG3-30R1CG3-30R2CG3-40R1
2010301540
m3
2020303040
12121
3°55'7°50'3°55'7°50'3°55'
RRRRR
H1H1H1H1HB
2020202020
5050555555
60.1460.5790.2190.85
120.28
66669696
126
69699999
129
2828282830
CG3-50R1CG3-50R2CG3-60R1
502560
505060
121
3°55'7°50'3°55'
RRR
HBHBHB
202020
636370
150.35151.41180.42
156156186
159159189
303030
CG3-20L1CG3-20L2CG3-30L1CG3-30L2CG3-40L1
2010301540
2020303040
12121
3°55'7°50'3°55'7°50'3°55'
LLLLL
H1H1H1H1HB
2020202020
5050555555
60.1460.5790.2190.85
120.28
66669696
126
69699999
129
2828282830
CG3-50L1CG3-50L2CG3-60L1
502560
505060
121
3°55'7°50'3°55'
LLL
HBHBHB
202020
636370
150.35151.41180.42
156156186
159159189
303030
Wor
mG
ear
Pair
SW.BG.CG
3Normal ModuleSW Worms, BG.CG Worm Wheels
■ CG3 Allowable Worm Wheel Torques (N.m) ■ BG3 Allowable Worm Wheel Torques (N.m)
Worms, Worm Wheels
337
SW.BG.CG
HB Shape
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Wor
mG
ear
Pair
NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables below show the allowable worm wheel torques (N.m) at selected worm speeds.
Total length Screw Weight(kg)
Catalog No.R Size S7070
――
――
0.600.60
SW3-R1SW3-R2
7070
――
――
0.600.60
SW3-L1SW3-L2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1515
4343
5252
30.129.5
3.073.01
0.15~0.330.15~0.33
0.840.84
BG3-20R1BG3-20R2
1515
4343
5252
30.1 29.5
3.07 3.01
0.15~0.330.15~0.33
0.840.84
BG3-20L1BG3-20L2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1515151515
4343434345
――――(9)
――――
(107)
5252676782
18.117.7 38.7 38.5 66.3
1.841.80 3.94 3.92 6.76
0.15~0.330.15~0.330.15~0.330.15~0.330.15~0.33
0.700.701.401.401.90
CG3-20R1CG3-20R2CG3-30R1CG3-30R2CG3-40R1
151515
454545
(9)(9)(9)
(138)(138)(166)
9797
112
100 100 141
10.210.2 14.4
0.15~0.330.15~0.330.15~0.33
2.502.504.00
CG3-50R1CG3-50R2CG3-60R1
1515151515
4343434345
――――(9)
――――
(107)
5252676782
18.1 17.7 38.7 38.5 66.3
1.84 1.80 3.94 3.92 6.76
0.15~0.330.15~0.330.15~0.330.15~0.330.15~0.33
0.700.701.401.401.90
CG3-20L1CG3-20L2CG3-30L1CG3-30L2CG3-40L1
151515
454545
(9)(9)(9)
(138)(138)(166)
9797
112
100 100 141
10.210.2 14.4
0.15~0.330.15~0.330.15~0.33
2.502.504.00
CG3-50L1CG3-50L2CG3-60L1
Worm rpm
Catalog No.30 100 300 600 900 1200
BG3-20R1
BG3-20R2
36.8
37.0
30.1
29.5
23.5
22.1
19.1
17.9
16.7
15.4
15.2
14.0
Worm rpm
Catalog No.30 100 300 600 900
CG3-20R1CG3-20R2CG3-30R1CG3-30R2CG3-40R1CG3-50R1CG3-50R2CG3-60R1
22.122.246.647.279.8
121122169
18.117.738.738.566.3
100100141
14.113.330.629.353.281.179.1
114
11.510.725.423.744.668.465.196.7
10.09.24
22.220.839.160.556.786.3
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal plane
14˚30'S45C—
Less than 194HBBlack oxide
BorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth14˚30' 14˚30'
FC200— —
— —
— —
Cut CutBorePossible
BorePossible
JIS 3 type Standard full depth
Cut
CAC502A (Formerly PBC2)
Datum reference surfacefor gear cutting
■ Module 4 Worms
338
■ Module 4 BG Worm Wheels
■ Module 4 CG Worm Wheels
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: These worm wheels are profile shifted to create the proper center distance.NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables
below show the allowable worm wheel torques (N.m) at selected worm speeds.NOTE 2: The H2 shape worm gears have casting lightening holes in the web.
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW4-R1SW4-R2
m412
3°42'7°25'
RR
W1W1
2222
5050
6262
7070
7070
2525
――
SW4-L1SW4-L2
m412
3°42'7°25'
LL
W1W1
2222
5050
6262
7070
7070
2525
――
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG4-20R1BG4-20R2
2010
m4
2020
12
3°42'7°25'
RR
H1H1
2020
6060
80.1780.67
8888
9090
3535
BG4-20L1BG4-20L2
2010
2020
12
3°42'7°25'
LL
H1H1
2020
6060
80.1780.67
8888
9090
3535
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeNOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG4-20R1CG4-20R2CG4-30R1CG4-30R2CG4-40R1
2010301540
m4
2020303040
12121
3°42'7°25'3°42'7°25'3°42'
RRRRR
H1H1HBHBHB
2020202020
6060606070
80.1780.67
120.25120.01160.33
8888
128128168
9090
130130171
3535353535
CG4-50R1CG4-50R2CG4-60R1
502560
505060
121
3°42'7°25'3°42'
RRR
H2H2H2
202020
707080
200.42201.69240.5
208208248
211211251
353535
CG4-20L1CG4-20L2CG4-30L1CG4-30L2CG4-40L1
2010301540
2020303040
12121
3°42'7°25'3°42'7°25'3°42'
LLLLL
H1H1HBHBHB
2020202020
6060606070
80.1780.67
120.25120.01160.33
8888
128128168
9090
130130171
3535353535
CG4-50L1CG4-50L2CG4-60L1
502560
505060
121
3°42'7°25'3°42'
LLL
H2H2H2
202020
707080
200.42201.69240.5
208208248
211211251
353535
Wor
mG
ear
Pair
SW.BG.CG
W1 Shape
H1 Shape
SW Worms, BG.CG Worm Wheels 4Normal Module
■ CG4 Allowable Worm Wheel Torques (N.m) ■ BG4 Allowable Worm Wheel Torques (N.m)
339
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Total length Screw Weight(kg)
Catalog No.R Size S9595
――
――
1.701.70
SW4-R1SW4-R2
9595
――
――
1.701.70
SW4-L1SW4-L2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1717
5252
7171
61.760.0
6.296.12
0.17~0.370.17~0.37
1.801.80
BG4-20R1BG4-20R2
1717
5252
7171
61.7 60.0
6.29 6.12
0.17~0.370.17~0.37
1.801.80
BG4-20L1BG4-20L2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
1717171717
5252525252
――
(12)(12)(11)
――(96)(96)
(136)
71719191
111
37.0 36.0 79.1 78.3
136
3.77 3.67 8.07 7.99
13.8
0.17~0.370.17~0.370.17~0.370.17~0.370.17~0.37
1.501.502.502.503.70
CG4-20R1CG4-20R2CG4-30R1CG4-30R2CG4-40R1
171717
525252
(12)(12)(12)
(176)(176)(218)
131131151
205204 288
20.9 20.8 29.4
0.17~0.370.17~0.370.17~0.37
4.504.505.00
CG4-50R1CG4-50R2CG4-60R1
1717171717
5252525252
――
(12)(12)(11)
――(96)(96)
(136)
71719191
111
37.0 36.0 79.1 78.3
136
3.773.678.077.99
13.8
0.17~0.370.17~0.370.17~0.370.17~0.370.17~0.37
1.501.502.502.503.70
CG4-20L1CG4-20L2CG4-30L1CG4-30L2CG4-40L1
171717
525252
(12)(12)(12)
(176)(176)(218)
131131151
205 204 288
20.9 20.8 29.4
0.17~0.370.17~0.370.17~0.37
4.504.505.00
CG4-50L1CG4-50L2CG4-60L1
Worm rpm
Catalog No.30 100 300 600 900 1200
BG4-20R1
BG4-20R2
75.9
75.9
61.7
60.0
47.9
44.8
38.4
35.7
33.7
30.9
30.1
27.5
Worm rpm
Catalog No.30 100 300 600
CG4-20R1CG4-20R2CG4-30R1CG4-30R2CG4-40R1CG4-50R1CG4-50R2CG4-60R1
45.645.596.396.8
165249250348
37.036.079.178.3
136205204288
28.726.962.359.4
108165160233
23.021.450.947.389.4
137130194
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal plane
14˚30'S45C—
Less than 194HBBlack oxide
BorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth14˚30' 14˚30'
FC200— —
— —
— —
Cut CutBorePossible
BorePossible
SW.BG.CG
Wor
mG
ear
Pair
HB Shape
H2 Shape NOTE 3
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Worms, Worm Wheels
JIS 3 type Standard full depth
Cut
CAC502A (Formerly PBC2)
Datum reference surfacefor gear cutting
340
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: These worm wheels are profile shifted to create the proper center distance.NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables
below show the allowable worm wheel torques (N.m) at selected worm speeds.NOTE 2: The H2 shape worm gears have casting lightening holes in the web.
W3 Shape
■ Module 5 Worms
■ Module 5 BG Worm Wheels
■ Module 5 CG Worm Wheels
SW.BG.CG
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW5-R1SW5-R2
m512
4°06'8°13'
RR
W3W3
2525
5656
7070
8080
8585
2020
2020
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG5-20R1BG5-20R2
2010
m52020
12
4°06'8°13'
RR
H1H1
2222
7575
100.26101.04
110110
113113
4545
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeNOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG5-20R1CG5-20R2CG5-30R1CG5-30R2CG5-40R1
2010301540 m5
2020303040
12121
4°06'8°13'4°06'8°13'4°06'
RRRRR
H1H1HBHBH2
2222222222
7575757590
100.26101.04150.38151.56200.51
110110160160210
113113163163213
4545454545
CG5-50R1CG5-50R2CG5-60R1
502560
505060
121
4°06'8°13'4°06'
RRR
H2H2H2
222222
9090
100
250.61252.59300.77
260260310
263263313
454545
Wor
mG
ear
Pair
H1 Shape
SW Worms, BG.CG Worm Wheels 5Normal Module
■ CG5 Allowable Worm Wheel Torques (N.m) ■ BG5 Allowable Worm Wheel Torques (N.m)
341
Total length Screw Weight(kg)
Catalog No.R Size S
125125
――
――
2.902.90
SW5-R1SW5-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
2020
6565
8585
117115
12.011.7
0.20~0.400.20~0.40
3.603.60
BG5-20R1BG5-20R2
2020
7272
100100
185 183
18.9 18.6
0.22~0.420.22~0.42
6.106.10
BG6-20R1BG6-20R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
2020202020
6565656565
――
(13)(13)(16)
――
(127)(127)(172)
8585
110110135
70.368.9
150 150 258
7.177.03
15.315.3 26.3
0.20~0.400.20~0.400.20~0.400.20~0.400.20~0.40
3.003.004.404.407.00
CG5-20R1CG5-20R2CG5-30R1CG5-30R2CG5-40R1
202020
656565
(16)(16)(13)
(223)(223)(276)
160160185
390 390 548
39.8 39.7 55.9
0.20~0.400.20~0.400.20~0.40
9.209.20
13.0
CG5-50R1CG5-50R2CG5-60R1
Worm rpm
Catalog No.30 100 300 600 900 1200
BG5-20R1
BG5-20R2
146
146
117
115
91.2
85.8
73.0
68.4
63.7
58.8
56.9
52.2
Worm rpm
Catalog No.30 100 300 600
CG5-20R1CG5-20R2CG5-30R1CG5-30R2CG5-40R1CG5-50R1CG5-50R2CG5-60R1
87.487.9
185187316477483668
70.368.9
150150258390390548
54.751.5
119114206315307443
43.841.096.890.6
170261249369
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal plane
14˚30'S45C—
Less than 194HBBlack oxide
BorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth14˚30' 14˚30'
FC200— —
— —
— —
Cut CutBorePossible
BorePossible
SW.BG.CG
Wor
mG
ear
Pair
HB Shape
H2 Shape NOTE 3
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Worms, Worm Wheels
JIS 3 type Standard full depth
Cut
CAC502A (Formerly PBC2)
Datum reference surfacefor gear cutting
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
342
W3 Shape H1 Shape
■ Module 6 Worms
Wor
mG
ear
Pair
SW.BG.CG
■ Module 6 BG Worm Wheels
■ Module 6 CG Worm Wheels
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW6-R1SW6-R2
m612
4°18'8°38'
RR
W3W3
3030
6464
8080
9292
100100
2525
2525
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG6-20R1BG6-20R2
2010
m62020
12
4°18'8°38'
RR
H1H1
2525
100100
120.34121.38
132132
136136
5252
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeNOTE 2
Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG6-20R1CG6-20R2CG6-30R1CG6-30R2CG6-40R1
2010301540 m6
2020303040
12121
4°18'8°38'4°18'8°38'4°18'
RRRRR
H1H1HBHBH2
2525252525
100100100100100
120.34121.38180.51182.06240.68
132132192192252
136136196196256
5252525252
CG6-50R1CG6-50R2CG6-60R1
502560
505060
121
4°18'8°38'4°18'
RRR
H2H2H2
252525
100100120
300.85303.44361.02
312312372
316316376
525252
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: Heat treating the tooth area of these worms is not recommended since it will introduce errors in the lead and pressure angles, producing poor gear mesh.CAUTION: These worm wheels are profile shifted to create the proper center distance.NOTE 1: The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 294 for more details. The tables
below show the allowable worm wheel torques (N.m) at selected worm speeds.NOTE 2: The H2 shape worm gears have casting lightening holes in the web.
SW Worms, BG.CG Worm Wheels 6Normal Module
■ CG6 Allowable Worm Wheel Torques (N.m) ■ BG6 Allowable Worm Wheel Torques (N.m)
Worms, Worm Wheels
343
HB Shape
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
*CS has a sand mold casting finish. The dimensional tolerance of CS parts are the very coarse grade of JIS B 0405.
Specifications
SW
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
KHK W 001 grade 4Normal plane
14˚30'S45C—
Less than 194HBBlack oxide
BorePossible
BG CGKHK W 002 grade 4 KHK W 002 grade 4Normal plane Normal planeStandard full depth Standard full depth14˚30' 14˚30'
FC200— —
— —
— —
Cut CutBorePossible
BorePossible
H2 Shape NOTE 3
JIS 3 type Standard full depth
Cut
CAC502A (Formerly PBC2)
Datum reference surfacefor gear cutting
Total length Screw Weight(kg)
Catalog No.R Size S
150150
――
――
4.304.30
SW6-R1SW6-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
2020
7272
100100
185 183
18.9 18.6
0.22~0.420.22~0.42
6.106.10
BG6-20R1BG6-20R2
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G (H) ( I ) J Surface durability Surface durability
2020202020
7272727272
――
(15)(15)(15)
――
(155)(155)(213)
100100130130160
111110 237238407
11.311.224.2 24.3 41.5
0.22~0.420.22~0.420.22~0.420.22~0.420.22~0.42
5.105.107.607.60
10.0
CG6-20R1CG6-20R2CG6-30R1CG6-30R2CG6-40R1
202020
727272
(16)(16)(17)
(275)(275)(336)
190190220
615620865
62.8 63.2 88.2
0.22~0.420.22~0.420.22~0.42
13.013.019.0
CG6-50R1CG6-50R2CG6-60R1
Worm rpm
Catalog No.30 100 300 600 900
BG6-20R1
BG6-20R2
232
235
185
183
144
136
115
109
99.2
92.3
Worm rpm
Catalog No.30 100 300 600
CG6-20R1CG6-20R2CG6-30R1CG6-30R2CG6-40R1CG6-50R1CG6-50R2CG6-60R1
139141294299502760774
1060
111110237238407615620865
86.281.8
187181325496488698
(69.0)(65.1)
(153)(144)(268)(412)(395)(582)
SW.BG.CG
Wor
mG
ear
Pair
344
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: SW worms may also be used to mate with PG worm wheels.CAUTION: These worm wheels are profile shifted to create the proper center distance.
W2 ShapeW1 Shape
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RSUW1-R1SUW1-R2
m112
3°35'7°11'
RR
W2W2
66
――
1616
1818
――
――
3232
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
A B C D D' EPG1-20R1PG1-20R2PG1-30R1PG1-40R1PG1-50R1
2010304050
m1
2020304050
12111
3°35'7°11'3°35'3°35'3°35'
RRRRR
H1H1H1H1H1
66688
1616202630
20.0420.1630.0640.0850.1
2222324252
2323334353
1010101010
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RSUW1.5-R1SUW1.5-R2
m1.512
3°26'6°54'
RR
W1W1
88
2020
2525
2828
3030
1010
4040
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
A B C D D' EPG1.5-20R1PG1.5-20R2
2010
m1.52020
12
3°26'6°54'
RR
H1H1
88
2222
30.0530.22
3333
34.534.5
1212
■ Module 1 Worms
Wor
mG
ear
Pair
SUW.PG
■ Module 1 Worm Wheels
■ Module 1.5 Worms
SUW Worms, PG Plastic Worm Wheels Normal Modules1~1.5
■ Module 1.5 Worm Wheels
Worms, Plastic Worm Wheels
345
SUW.PG
NOTE 2: The allowable torques shown in the table are calculated using the Lewis formula.
H1 Shape
NOTE 1: The W2 shape worms are supplied with a set screw.
JIS 3 type Standard full depth
Cut
Screw NOTE 1 Weight(kg)
Catalog No.Size SM4M4
55
0.040.04
SUW1-R1SUW1-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1010101010
2020202020
1818232833
0.620.621.031.491.96
0.060 0.060 0.10 0.15 0.20
0.07~0.230.07~0.230.07~0.230.07~0.230.07~0.23
0.00600.00600.010.020.03
PG1-20R1PG1-20R2PG1-30R1PG1-40R1PG1-50R1
Screw Weight(kg)
Catalog No.Size S――
――
0.120.12
SUW1.5-R1SUW1.5-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 2 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1010
2222
27.527.5
1.661.68
0.170.17
0.09~0.250.09~0.25
0.0150.015
PG1.5-20R1PG1.5-20R2
Wor
mG
ear
Pair
Specifications
*Available on special order: Same gears made from SUS304.
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
SUWKHK W 001 grade 4Normal plane
20˚SUS303—
Less than 187HB—
BorePossible
PGKHK W 002 grade 5Normal planeStandard full depth20˚
—
—
—
CutBorePossible
MC901
Datum reference surfacefor gear cutting
SUW Worms, PG Plastic Worm Wheels
■ Module 2 Worms Pressure Angle 14 °30'
Pressure Angle 20 °
Pressure Angle 14 °30'
346
Wor
mG
ear
Pair
SUW.PG
■ Module 2 Worm Wheels
CAUTION: Before assembling or performing any secondary operations, please carefully read the “Application Hints” on page 296.CAUTION: SW worms may also be used to mate with PG worm wheels.CAUTION: These worm wheels are profile shifted to create the proper center distance.
■ Module 2.5 Worms
■ Module 2.5 Worm Wheels
■ Module 3 Worms
■ Module 3 Worm Wheels
W1 Shape
H1 Shape
Normal Modules2~3
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RSUW2-R1SUW2-R2
m212
3°42'7°25'
RR
W1W1
1212
2525
3131
3535
3232
1414
4646
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RSUW2.5-R1SUW2.5-R2
m2.512
3°52'7°46'
RR
W1W1
1515
3030
3737
4242
4545
1818
6363
Catalog No. Normal module Number of start Lead angle Hand of tread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
LH7 M N O P Q RSUW3-R1SUW3-R2
m312
3°55'7°50'
RR
W1W1
1616
3535
4444
5050
5050
2020
7070
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
A B C D D' EPG2-20R1PG2-20R2
2010
m22020
12
3°42'7°25'
RR
H1H1
1010
3333
40.0840.34
4444
4646
2222
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
A B C D D' EPG2.5-20R1PG2.5-20R2
2010
m2.52020
12
3°52'7°46'
RR
H1H1
1212
3535
50.1150.46
5555
57.557.5
2222
Catalog No. Reduction ratio Normal module No. of teeth Number of start Helix angle Hand of tread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
A B C D D' EPG3-20R1PG3-20R2
2010
m32020
12
3°55'7°50'
RR
H1H1
1515
5050
60.1460.57
6666
6969
2828
Worms, Plastic Worm Wheels
347
Wor
mG
ear
Pair
SUW.PG
NOTE 1: The allowable torques shown in the table are calculated using the Lewis formula.
Screw Weight(kg)
Catalog No.Size S――
――
0.200.20
SUW2-R1SUW2-R2
Screw Weight(kg)
Catalog No.Size S――
――
0.400.40
SUW2.5-R1SUW2.5-R2
Screw Weight(kg)
Catalog No.Size S――
――
0.600.60
SUW3-R1SUW3-R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1313
3535
35.535.5
4.784.82
0.490.49
0.10~0.280.10~0.28
0.040.04
PG2-20R1PG2-20R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1414
3636
43.543.5
(8.46)(8.54)
0.860.87
0.13~0.310.13~0.31
0.060.06
PG2.5-20R1PG2.5-20R2
Hub width Total length Mounting distance Allowable torque(N・m) NOTE 1 Allowable torque(kgf・m) Backlash(mm)
Weight(kg)
Catalog No.F G J Surface durability Surface durability
1515
4343
5252
(13.7) (13.8)
1.40 1.41
0.15~0.330.15~0.33
0.120.12
PG3-20R1PG3-20R2
Specifications
*Available on special order: Same gears made from SUS304.
Datum reference surfacefor gear cutting
Heat treatment
Secondary Operations
Catalog No.
Normal pressure angle
Precision grade
Material
Tooth hardnessSurface treatmentTooth surface finish
Reference section of gearGear teeth
SUWKHK W 001 grade 4Normal planeJIS 3 type Standard full depth
20˚ or 14° 30'SUS303—
Less than 187HB—
CutBorePossible
PGKHK W 002 grade 5Normal planeStandard full depth20˚ or 14° 30’
—
—
—
CutBorePossible
MC901
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