Page 1
8
Numerous discussions with manufac-
turers, which preceded the selection of
the gearboxes shown here, confirmed
that there is a trend towards specialist
gearboxes in order to better satisfy,
both technically and economically, the
demands of individual applications.
However, as often as possible the
designs use components from stand-
ard series – an advantage not least
from a logistics point of view.
In the following examples the bear-
ings used are listed starting with those
for the input shaft and following the
order in which they occur in the power
train. The examples show that bear-
ings of standard series are preferred
and only a few special bearings are
used. The examples also confirm an
earlier observation in the section deal-
ing with bearing arrangements for gear
shafts, namely that virtually all “cata-
logue” bearing types are used in gear-
boxes. SKF, with its comprehensive
range of technically advanced standard
bearings, assists the designer in pro-
ducing technically and economically
competitive gearboxes.
115
8 Application examples
Application examples
In this section various interesting and well-
proven gearbox designs from important manu-
facturers are presented. In order to give a clear
presentation, the most important technical data
are presented in table form. This has made it
possible to avoid long descriptions. The gear-
box drawings will certainly inspire designers.
Page 2
Bevel/spur
Application Universal (e.g. conveyor drive)
Manufacturer A. Friedr. Flender AG, Bocholt, Germany
Input drive Depending on application
Drive rating P = 53 kW
Drive speed n = 1 500 r/min
Total ratio i = 1 : 63
Power take-off Depending on application: solid, flanged or hollow
shaft
Output torque M2 = 23 800 Nm
Dimensions 960 × 580 × 300 mm
Mass G = 635 kg
Gears Case hardened
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 460
Operating temperature Tmax = 90 °C
Sealing Radial shaft seals, or largely wear-free labyrinth
seals
Bearings
No. 1 shaft 2 × 32309 BJ2
No. 2 shaft 2 × 32310 J2
No. 3 shaft 2 × 32314 J2
No. 4 shaft 2 × 30224 J2
Minimum bearing life Depending on application
116
8 Application examples
Page 3
8
117
8 Application examples
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Bevel/spur, two-stage
Application General industrial
Manufacturer Rossi Motoriduttori, Modena, Italy
Input drive Electric motor
Drive rating P = 134 kW
Drive speed n = 1 400 r/min
Total reduction i = 10,3 : 1
Output torque M2 = 9 470 Nm
Dimensions 817 × 450 × 334 mm
Mass G = 282 kg
Gears Hardened
Lubrication type Oil bath
Lubricant EP oil with viscosity to ISO VG 220
Operating temperature T = 65 to 80 °C
Sealing Radial shaft seals
Bearings
No. 1 shaft 2 × 32310 B
No. 2 shaft 2 × 32312
No. 3 shaft 2 × 32026
Remarks Universal attachment possible; stiff, one-piece
casing; standard hollow shaft at output side; choice
of drive shaft arrangement (position)
118
8 Application examples
Page 5
8
119
8 Application examples
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Page 6
120
Worm, single stage
Application Tilting arrangement
Manufacturer A. Friedr. Flender, Bocholt, Germany
Input drive Electric displaceable anchor motor, V-belts
Drive rating P = 2,3 kW
Drive speed n = 636 r/min
Total ratio i = 40 : 1
Output drive Hollow shaft, cartridge type
Output torque M2 max = 2 350 Nm
Dimensions 364 × 394 × 221 mm
Mass G = 65 kg
Gears Concave flank teeth, worm case hardened and
ground, worm wheel of bronze
Lubrication type Oil bath; worm wheel bearing greased
Lubricants Polyglycol oil with viscosity to ISO VG 680; worm
wheel: rolling bearing grease
Operating temperature Tmax = 100 °C (oil bath)
Sealing Radial shaft seals at input and output sides
Bearings
Worm shaft 2 × 31308 J2
Wheel 2 × 6017 or 2 × 32017 X
Remarks Cooling by fan wheel on worm shaft
8 Application examples
Page 7
8
121
8 Application examples
Page 8
122
8 Application examples
Eccentric drive with cycloid cams
Application General industrial
Manufacturer SUMITOMO CYCLO EUROPE, Markt Indersdorf,
Germany
Input drive Via coupling
Drive rating P = 1 kW
Drive speed n = 1 500 r/min
Total reduction i = 357 : 1
Output drive Output shaft with key
Output torque M2 = 1 810 Nm
Dimensions 300 ∅ × 439 mm
Mass G = 69 kg
Lubrication type Grease
Operating temperature T = 60 °C
Sealing Radial shaft seals on input and output shafts
Bearings
No. 1 shaft 1 × 6302-Z; 1 × 6302
No. 2 shaft 1 × 6207; 1 × 6307
No. 3 shaft 1 × 6215-Z; 1 × 6213-ZNR
Page 9
8
123
8A
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Page 10
124
8 Application examples
Bevel gear, single stage
Application Kaplan turbine/generator
Input drive Kaplan turbine
Rating P = 2 005 kW
Speed n = 232 r/min
Torque M1 = 82 500 Nm (turbine)
Total ratio i = 1 : 3,23
Power take-off Lamellar coupling (rotationally
stiff, can bend elastically, with slipping elements),
generator
Dimensions 1 730 × 1 600 × 3 056 mm
Mass G = 9 000 kg
Gears Cyclopalloid/HPG, case hardened
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 220
Operating temperature T = 65 °C
Seals Radial shaft seals on input and output shafts
(on the input shaft with chamber for oil seepage)
Bearings
No. 1 shaft 1 × NU 1064 MA; 1 × 23060 CC/W33;
1 × 29360 E; 1 × 29248
No. 2 shaft 1 × 22348 CC/C3W33; 1 × 32040 X; 1 × 29340 E
Minimum bearing life L10h = 100 000 operating hours
Remarks Turbine shaft = gearbox input shaft. Turbine blade
adjustment via input shaft. Each bearing has tem-
perature monitoring. Connections for shock pulse
measurements. Very smooth running for environ-
mental reasons.
Page 11
8
125
8 Application examples
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Page 12
8 Application examples
126
Spur gear, two-stage
Application Wind power plant
Manufacturer Renk AG, Rheine, Germany
Input drive Wind turbine, claw coupling
Rating P = 168 kW
Speed n = 63 r/min
Input torque M1 = 25 480 Nm
Total ratio i = 1 : 28,97
Power take-off Elastic coupling, generator
Dimensions 1 215 × 900 × 1 000 mm
Mass G = 1 350 kg
Gears Helical cut, case hardened, ground
Lubrication type Oil bath
Lubricant Polyglycol oil with viscosity to ISO VG 220
Operating temperature T ≈ 80 °C
Seals Felt ring + 2 × V-rings (input)
Labyrinth + 2 × V-rings (output)
Bearings
No. 1 shaft 1 × 22315 E; 1 × NU 313 ECJ
No. 2 shaft 2 × 22319 E
No. 3 shaft 1 × NJ 228 ECJ/C3; 1 × 24034 CC/W33
Minimum bearing life L10h = 100 000 operating hours
Remarks Monitored by temperature recorder
Page 13
8 Application examples
127
8
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Page 14
Planetary spur gear, two-stage
Application Wind power plant
Manufacturer David Brown, Huddersfield, Great Britain
Input drive Wind turbine, socket connection with clamping
rings
Rating P = 1 150 kW
Speed n = 24,5 r/min
Input torque M1 = 448 000 Nm
Total ratio i = 1 : 41,63
Power take-off Elastic coupling, generator
Dimensions 1 730 × 2 748 × 2 100 mm
Mass G = 9 500 kg
Gears Planetary wheels straight cut
Spur wheels helical cut, case hardened and
ground
Lubrication type Circulating oil
Lubricant Synthetic oil with viscosity to ISO VG 320 EP
Seals Flingers with labyrinth seals
Bearings
Planetary carrier 1 × NCF 18/560 V; 1 × NCF 2972 V
3 planetary wheels 3 × 22338 CC/W33
Spur gear shaft 2 × NCF 2952 V
Spur gear pinion 2 × 32328
Auxiliary drive shaft 2 × 32320 J2
Hollow shaft 1 × NU 213 ECJ
Minimum bearing life L10h = 50 000 operating hours
8 Application examples
128
Page 15
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8 Application examples
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8
Page 16
Planetary/spur, three-stage
Application Wind power station
Manufacturer Renk AG, Augsburg, Germany
Input drive Wind turbine, toothed coupling
Drive rating P = 1 327 kW
Drive speed n = 23 r/min
Total ratio i = 57,7 : 1
Output torque M2 = 570 000 Nm
Dimensions 1 700 × 2 800 × 3 180 mm
Mass G = 11 600 kg
Gears Planetary and spur gears case hardened; spur
gears have double helix
Lubrication type Circulating oil
Lubricant Synthetic oil with viscosity to ISO VG 220
Operating temperature T = 46 °C (oil inlet temperature)
Sealing Special shaft seal at input side, zinc seal at output
side
Bearings
Planetary carrier 1 × 608/800 MA; 1 × NJ 18/760 MA6/343016
6 planetary gears 6 × 24136 CC/C3W33/VE096
Planetary carrier 1 × 61888 N1MA
Spur gear shaft 2 × 313451 B (cylindrical roller bearing 320 × 440 ×
72 mm)
Pinion (auxiliary drive) 1 × 6222 N1/C3; 1 × NU 2222 ECJ/C3
Pinion (power take- off) 1 × 32228 J2/DF; 1 × NU 2228 ECMA/C3
Minimum bearing life L10h = 100 000 operating hours
Remarks Elastic gearbox suspension; permissible noise
level 85 dBA
8 Application examples
130
Page 17
8 Application examples
131
8
Page 18
Planetary/spur, superimposed
Application Ship’s generator drive
Manufacturer Renk AG, Augsburg, Germany
Input drive Combustion engine, claw coupling
Drive rating P = 900 kW
Drive speed n = 297 to 425 r/min
Total ratio i = 1 : 4,2 to 1 : 6,1 (variable)
Power take-off Claw coupling
Output torque M2 = 4 775 Nm
Dimensions 1 800 × 1 300 × 2 100 mm
Mass G = 6 300 kg
Gears Spur, sun and planetary gears case hardened and
ground, internally geared ring heat treated
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 100 or SAE 30
Operating temperature T = 70 °C (oil sump)
Sealing Zinc rings at input and output sides
Bearings
Coupling 2 × 6032 M/C3
Planetary carrier 1 × 6234 M/C3; 1 × 61938 MA/C3
Sun wheel 1 × 6224 MA/C3
Geared ring 2 × 6044 M/C3
3 planetary gears 6 × NJ 2313 ECMA/C3
2 spur gear intermediate
shafts 4 × NJ 2219 ECMA/C3
2 spur pinion shafts 4 × NJ 2218 ECMA/C3
Minimum bearing life L10h = 30 000 operating hours
Remarks A constant output speed and thus a constant fre-
quency for the generator are aimed at although the
input speed varies. The power is split after the
lamellar coupling (one part in the planetary gear
set, one part in the hydraulic pump and motor);
power rejoined via internally geared ring.
8 Application examples
132
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8 Application examples
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Page 20
Spur gear, two-stage
Application Geared motor for industry
Manufacturer SEW-Eurodrive, Bruchsal, Germany
Input drive Electric motor (asynchronous, DC), pulley, turbo
coupling
Rating P = 0,75 to 37 kW
Speed n = 3 000 to 750 r/min
Total ratio i = 20,78 : 1 to 201,78 : 1
Power take-off Coupling, sprocket wheel, gear
Output torque M2 max = 4 000 Nm
Dimensions 782 × 437 × 400 mm
Mass G = 173 kg
Gears Helical cut, case hardened, ground
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 46 to ISO VG 200
Operating temperature Tmax = 90 °C
Seals Radial shaft seals
Bearings
No. 1 shaft 1 × 30307 J2; 1 × NUP 2308 ECJ; 1× 30308 J2
No. 2 shaft 1 × NUP 213 ECJ; 1 × 6315-Z
Minimum bearing life L10h = 5 000 operating hours (for M2 max)
8 Application examples
134
Page 21
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Page 22
Spur gear, three-stage
Application Geared motor for industry
Manufacturer Flender-Himmelwerk, Tübingen, Germany
Input drive Electric motor (asynchronous), may be DC; elastic
coupling, slip clutch or “Anlaufkupplung”
Rating P = 3 to 90 kW
Speed n = 750 to 1 500 r/min
Total ratio i = 1:18,27 to 1:113,61
Power take-off e.g. elastic coupling
Output torque M2 = 9 000 Nm
Dimensions 612 × 702 × 530 mm
Mass G = approx. 450 kg
Gears Helical cut, case hardened, ground
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 220
Operating temperature Tmax = 90 °C
Seals Radial shaft seals with dust lip
Bearings
No. 1 shaft 1 × NU 212 ECJ; 1 × 6212; 1 × NU 312 ECJ
No. 2 shaft 1 × 22208 E; 1 × 22309 CC
No. 3 shaft 1 × 22312 E; 1 × 21312 E
No. 4 shaft 1 × NJ 2217 ECJ; 1 × 22220 E
Minimum bearing life L10h = 5 000 operating hours
136
8 Application examples
Page 23
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137
8 Application examples
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Page 24
Bevel/spur gear, three-stage
Application Geared motor for industry
Manufacturer SEW-Eurodrive, Bruchsal, Germany
Input drive Electric motor (asynchronous, DC), coupling,
sprocket wheel belt pulley
Rating P = 1,5 to 45 kW
Speed n = 3 000 to 750 r/min
Total ratio i = 11,71 : 1 to 130,16 : 1
Power take-off Hollow shaft, coupling, sprocket wheel, gear
Output torque M2 = 6 000 Nm
Dimensions 781 × 557 × 517 mm
Mass G = 285 kg
Gears Spur: helical cut, case hardened and ground
Bevel: curved teeth and case hardened
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 46 to ISO VG 220
Operating temperature Tmax = 90 °C
Seals Radial shaft seals on input and output shafts
Bearings
No. 1 shaft Electric motor bearings
No. 2 shaft 1 × 30310 J2; 1 × 30311 J2
No. 3 shaft 2 × 32310 J2
No. 4 shaft 2 × 6224
Minimum bearing life L10h = 5 000 operating hours (for M2 max)
138
8 Application examples
Page 25
8
139
8 Application examples
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Page 26
140
Bevel/spur, two-stage
Application Main and auxiliary drive of the travelling gear of a
portal crane for container handling
Manufacturer Bonfiglioli Riduttori, Bologna, Italy
Input drive Electic motor
Drive rating P = 25 kW (main drive)
P = 4 kW (auxiliary drive)
Drive speed n = 1 750 r/min (main drive)
n = 1 450 r/min (auxiliary drive)
Total reduction i = 19,5 : 1 (main drive)
i = 39,6 : 1 (auxiliary drive)
Output torque M2 = 12 000 Nm (main drive)
M2 = 2 400 Nm (auxiliary drive)
Dimensions 835 × 1 115 × 560 mm
Mass G = 380 kg (main drive)
G = 100 kg (auxiliary drive)
Gears 20 Mn Cr 5, hardened
Lubrication type Circulating oil (main drive)
Oil bath (auxiliary drive)
Lubricant Oil with viscosity to ISO VG 220
Sealing Radial shaft seals
Bearings
No. 1 shaft 2 × 31312 (main drive)
2 × 32014 X (auxiliary drive)
No. 2 shaft 1 × 30313; 1 × 30314 (main drive)
1 × 32208; 1 × 30307 (auxiliary drive)
No. 3 shaft 2 × NNC 4832 V (main drive)
2 × NJ 215 EC (auxiliary drive)
Remarks Forced circulating oil lubrication is needed for the
bearings on the vertical shaft. The auxiliary drive
is coupled in by hand as required. Each of the 16
runner wheels is driven by a geared motor. The
torques are taken up by the frame via torque
supports.
8 Application examples
Page 27
8
141
8 Application examples
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Page 28
142
8 Application examples
Spur/planetary gear, three-stage
Application Swivelling drive for floating crane
Manufacturer Lohmann & Stolterfoht, Witten, Germany
Drive Electric motor (DC), elastic coupling
Rating P = 335 kW
Speed n = 500 r/min
Total ratio i = 1 : 73,8
Power take-off Pinion
Output torque M2 = 472 689 Nm
Dimensions 1 500 ∅ × 4 132 mm
Mass G = 10 152 kg
Gears All gears straight-cut; spur, sun and planetary whe-
els case hardened and ground; hollow wheels heat
treated
Lubrication Oil bath
Operating temperature Tmax = 70 °C
Seals Radial shaft seals on input and output shafts; gap-
type seal with grease fill for bearing at pinion side
of output shaft
Bearings
No. 1 shaft 1 × NJ 226 ECJ; 1 × 22218 CC/W33
No. 2 shaft 2 × NJ 228 ECJ
3 planetary wheels 3 × 22320 CC/W33
Planetary carrier 1 × NCF 1884 V; 1 × NCF 1892 V
3 planetary wheels 6 × NJ 2320 ECMA
Sun wheel 1 × 61836 MA
Pinion 1 × 24076 CC/W33
Minimum bearing life L10h = 15 000 operating hours
Page 29
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143
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Page 30
144
8 Application examples
Planetary, three-stage, vertical
Application Drive for slewing mechanism, e.g. for floating
crane or bucket excavator
Manufacturer Dorstener Maschinenfabrik AG, Dorsten, Germany
Input drive Electric motor, elastic coupling
Drive rating P = 50 kW
Drive speed n = 1 400 r/min
Total ratio i = 1 : 103
Power take-off Pinion for slewing ring
Output torque M2 = 35 274 Nm
Dimensions 640 ∅ × 1 750 mm
Mass G = 1 250 kg
Gears Sun and planetary gears case hardened;
internally geared rings hardened; straight cut teeth
Lubrication type Oil bath; bearings on input and output shafts
grease lubricated
Lubricant Oil with viscosity to ISO VG 220; rolling bearing
grease
Operating temperature T = 78 °C (oil bath)
Sealing Radial shaft seals on input and output shafts
Bearings
No. 1 shaft (input) 2 × 6215/C3
3 planetary gears 1st stage: 3 × 22207 CC
3 planetary gears 2nd stage: 3 × 22210 E
3 planetary gears 3rd stage: 3 × NJ 2213 ECJ
No. 2 shaft (output) 1 × NU 1034 MA; 1 × 23038 CC/W33
Minimum bearing life L10h = 40 000 operating hours
Page 31
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145
8 Application examples
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Page 32
8 Application examples
146
Bevel/spur, two-stage
Application Conveyor belt drive for tunnelling
Manufacturer Voith, St. Pölten, Austria
Input drive Electric motor (asynchronous), turbo coupling
Drive rating P = 55 kW
Drive speed n = 1 440 r/min
Total ratio i = 1 : 18,57
Power take-off Hollow shaft with shrunk-on washer connection
Output torque M2 = 6 775 Nm
Dimensions 530 × 475 × 990 mm
Mass G = 490 kg
Gears Bevel gears Klingelnberg-Cyclo-Palloid;
Spur gears helical cut, case hardened, ground
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 220
Sealing Radial shaft seals at input and output sides
Bearings
No. 1 shaft 1 × 31316 J1/DF; 1 × NJ 2316 ECM/C3
No. 2 shaft 2 × NJ 2314 ECMA/C3; 1 × QJ 312 N2MA/C3
No. 3 shaft 2 × NCF 2932 V
Page 33
8 Application examples
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8
Page 34
Bevel, two-stage
Application Conveyor belt drive
Manufacturer Brook Hansen, Edegem, Belgium
Input drive Electric motor
Drive rating P = 132 kW
Drive speed n = 1 420 r/min
Total ratio i = 16 : 1
Output drive On hollow shaft, shrunk-on washer connection
Output torque M2 = 16 000 Nm
Dimensions 645 × 450 × 1 130 mm
Mass G = 500 kg
Gears Case hardened and ground
Lubrication type Oil bath
Lubricant Mineral oil with EP additives
Sealing Double-action labyrinth seal at input side
Radial shaft seals with dust lip at output side
Bearings
Shaft No. 1 2 × 31314; 1 × 22315 E
Shaft No. 2 2 × 22315 E; 1 × 81210
Shaft No. 3 2 × NCF 2934 V
Minimum bearing life L10h = 25 000 hours
8 Application examples
148
Page 35
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8 Application examples
149
8
Page 36
Planetary, two-stage
Application Chain scraper conveyor for underground mine
Manufacturer Gebr. Eickhoff, Bochum, Germany
Input drive Electric motor via fluid coupling or elastic coupling
with motor where poles can be switched
Drive rating P = 450 kW
Drive speed n = 1 450 r/min
Total ratio i = 1 : 28
Output drive Toothed coupling or flanged gearbox
Output torque M2 = 100 000 Nm (briefly 250 000 Nm)
Dimensions 816 × 1 250 × 1 155 mm
Mass G = 1 870 kg
Gears Sun and planetary wheels case hardened, hollow
wheels of nitrided hardenable steel
Lubrication type Oil bath
Lubricant Mineral oil (anti-wear + EP) with viscosity to
ISO VG 320
Operating temperature Tmax = 95 °C (oil bath)
Sealing Radial shaft seal + dust seal at input side,
mechanical seal at output side
Bearings
No. 1 shaft 2 × 6222/C3
3 planetary gears 6 × NJ 2311 ECMA
3 planetary gears 3 × RN 315 ECP/QR
No. 2 shaft 2 × NJ 2868 ECMA/VE900
Minimum bearing life L10h = 50 000 operating hours
Remarks Robust casing ideal for mining applications; power
take-off shaft must briefly take up very large forces
from the conveyors
8 Application examples
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Page 37
8 Application examples
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Page 38
Bevel/spur/planetary, three-stage
Application Chain scraper conveyor for underground mine
Manufacturer Gebr. Eickhoff, Bochum, Germany
Input drive Electric motor via fluid coupling, or elastic coupling
for switching pole motor
Drive rating P = 450 kW
Drive speed n = 1 450 r/min
Total ratio i = 1 : 28
Power take-off Toothed coupling, or flanged gearbox
Output torque M2 = 100 000 Nm (briefly 250 000 Nm)
Dimensions 816 × 1 655 × 990 mm
Mass G = 2 980 kg
Gears Bevel, spur, sun and planetary gears case
hardened; ring with internal gear hardened and
nitrided
Lubrication type Oil bath
Lubricant Mineral oil (EP) with viscosity to ISO VG 320
Operating temperature Tmax = 95 °C (oil bath)
Sealing Radial shaft seal + dust seal on input shaft;
mechanical seal on output shaft
Bearings
No. 1 shaft 1 × 31322 XJ2/DF; 1 × 22324 CC/W33
No. 2 shaft 1 × 22320 E; 1 × 22326 CC/W33
No. 3 shaft 2 × 32034 X
3 planetary gears 3 × RN 315 ECP/QR
No. 4 shaft 2 × NJ 2868 ECMA/VE900
Minimum bearing life L10h = 50 000 operating hours
Remarks Robust casing for mining conditions; output shaft
with bearing arrangement must be able to accom-
modate very high forces from the conveyor for brief
periods
8 Application examples
152
Page 39
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8 Application examples
153
8
Page 40
Bevel/spur/planetary, three-stage
Application Ski lifts (seat and gondola types)
Manufacturer L. Kissling, Zurich-Seebach, Switzerland
Input drive Electric motor (asynchronous or DC), elastic
coupling
Drive rating P = 300 kW
Drive speed n = 1 500 or 1 800 r/min
Total ratio i = 93,75 : 1 (or from 48,31 : 1 to 132,92 : 1)
Output drive Flanged-on rope sheave
Output torque M2 = 170 000 Nm; rope tension: s = 450 000 N
Dimensions 530 × 730 × 1 333 mm + 905 × 1 250 mm ∅
Mass G = 3 800 kg
Gears Bevel, spur and planetary wheels case hardened,
hollow planetary wheel hardened
Lubrication type Oil bath and circulating oil
Lubricant EP oil with viscosity to ISO VG 220 or ISO VG 150
Operating temperature Tmax = 80 °C (oil bath)
Sealing Radial shaft seal + Z sealing washer at input side
and pairs of radial shaft seals + dust cover at
output side
Bearings
No. 1 shaft 1 × 31315 J2/DF, 1 × 22317 E
No. 2 shaft 2 × 23220 CC/W33
No. 3 shaft 2 × 23122 CC/W33
1 sun pinion 1 × 89310
3 planetary gears 6 × NCF 2222 V
Rope sheave 1 × 24048 CC/W33; 1 × 23048 CC/W33
Minimum bearing life L10h = 20 000 operating hours
Remarks Under-floor drive can be decoupled
8 Application examples
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Page 41
8 Application examples
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8
Page 42
156
Planetary/bevel plate with adjoining reduction gear
Application Drive for pumps in extraction plant
Manufacturer Motovario, Modena, Italy
Input drive Electric motor
Drive rating P = 9,2 kW
Drive speed n = 1 750 r/min
Total reduction i = 3,5 : 1
Output torque M2 = 500 Nm
Mass G = 145 kg
Gears 100 Cr 6, hardened and heat treated
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 320
Sealing Radial shaft seals
Bearings
No. 1 shaft 1 × 6213; 1 × 6309
No. 2 shaft 1 × 6213; 1 × NJ 210 EC
No. 3 shaft 2 × 32206
No. 4 shaft 1 × 30210; 1 × 30213
Minimum bearing life L10h = 25 000 operating hours
Remarks Gearbox is designed for maximum reliability under
difficult operating conditions
8 Application examples
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157
8
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8 Application examples
Page 44
158
Spur, split power, three-stage
Application Central drive for tube mill (cement)
Manufacturer A. Friedr. Flender, Bocholt, Germany
Input drive Electric motor (asynchronous), elastic coupling
Drive rating P = 3 600 kW
Drive speed n = 880 r/min
Total ratio i = 1 : 62,8
Output drive Toothed coupling
Output torque M2 = 2 350 kNm; at start-up 5 885 kNm
Dimensions 3 380 × 4 000 × 3 780 mm
Mass G = 79 250 kg
Gears 1st stage: helical
2nd stage: straight cut
3rd stage: double helix
All gears case hardened
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 460
Operating temperature Tmax = 65 °C (oil sump)
Sealing Lamellar rings at input and output sides
Bearings
Shaft No. 1 2 × NU 2248 MA/C3; 1 × QJ 248 N2MA/C3
Shaft No. 1 (auxiliary drive) 2 × 6248 M/C3
Shaft No. 2 2 × NCF 2976 V
Shaft No. 3 (3×) 3 × NU 3068 MA/VE900; 6 × NU 3084 MA
Shaft No. 4 1 × 60/560 MA/C3; 1 × N 28/710 ECMB
Minimum bearing life L10h = 80 000 operating hours
Remarks The equal power split is achieved by a radially free
pinion and gears adjusted by oil injection method
8 Application examples
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159
8
8 Application examples
Page 46
160
Bevel/spur gear, three-stage
Application Drive of a coal grinding mill
Manufacturer David Brown, Huddersfield, Great Britain
Input drive Electric motor, elastic coupling
Rating P = 420 kW
Speed n = 990 r/min
Total ratio i = 1 : 24,5
Power take-off Grinding plate of mill
Output torque M2 = 99 340 Nm
Dimensions 1 600 × 2 920 × 2 000 mm
Mass G = 25 600 kg
Gears Bevel: spiral cut in hard state
Spur: helical cut, ground, all case hardened
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 320
Operating temperature Tmax = 80 °C
Seals Double radial shaft seals with additional flingers on
input shaft; labyrinth with additional special rubbing
seal on output shaft
Bearings
No. 1 shaft 1 × 32324 J2; 1 × 32220 J2
No. 2 shaft 1 × 32036 X/DF; 1 × 23036 CC/W33
No. 3 shaft 1 × 32036 X/DF; 1 × 23036 CC/W33
No. 4 shaft 1 × 230/560 CA/W33; 1 × 294/630 EM;
1 × 230/500 CA/W33
Minimum bearing life L10h = 36 000 operating hours
Remarks Forces from the grinding chamber are taken up by
the bearings on the output shaft
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8
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8 Application examples
Page 48
162
Bevel/planetary, two-stage
Application Raw meal mill (cement industry)
Manufacturer Renk AG, Augsburg, Germany
Input drive Electric motor (squirrel cage), elastic coupling
Drive rating P = 2 600 kW
Drive speed n = 1 180 r/min
Total ratio i = 1 : 41,9
Output drive Grinding receptacle
Output torque M2 = 882 838 Nm
Dimensions 2 670 × 3 050 × 3 050 mm
Mass G = 68 600 kg
Gears Bevel, sun and planetary gears case hardened
and ground, internally geared ring pounded and
hardened
Lubrication type Circulating oil
Lubricant Oil with ciscosity to ISO VG 220
Operating temperature T = 62 °C
Sealing Labyrinths at input and output sides
Bearings
Bevel pinion shaft 1 × BT2B 332931 (240 × 480 × 220 mm)
1 × NU 2252 MA/C3
Bevel wheel 1 × 32064 X/DF; 1 × NU 1060 MA/C3
3 planetary gears 3 × 23164 CC/C3W33
Minimum bearing life L10h = 75 000 operating hours
Remarks Temperature, pressure and oil flow rate monitored;
shock pulse measurements
8 Application examples
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163
8
8 Application examples
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164
Planetary, three-stage
Application Locomotion drive for construction machines
Manufacturer Orenstein & Koppel, Hattingen, Germany
Input drive Flanged-on hydraulic motor, plug-type connection
Drive speed n = 4 000 r/min (adjustable)
Total reduction i = 80 : 1 to 200 : 1
Output Sprocket wheel or flanged-on rim
Output torque M2 = 44 000 Nm
Dimensions 435 × 435 × 383 mm
Mass G = 210 kg
Gears Sun and planetary wheels case hardened and
ground; hollow wheels heat treated and nitrided
Lubrication type Oil bath
Lubricant Gear oil SAE 90 or engine oil SAE 15W40
Sealing O-ring (static) at input side, mechanical seal +
V-ring at output side
Bearings
1st stage 3 × BC2B 322418 B (22 × 39 × 22 mm;
full complement)
2nd stage 3 × BC2B 322421/HB3 (35 × 52 × 26 mm;
full complement)
3rd stage 5 × BC2B 326111/HB3 (50 × 70 × 32 mm;
full complement)
Sprocket wheel 2 × T4DB 170
Brake 1 × 6009
Minimum bearing life L10h = 500 operating hours at maximum torque
8 Application examples
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165
8
8 Application examples
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166
Spur/planetary, three-stage
Application Drive for articulation of excavator
Manufacturer Dorstener Maschinenfabrik AG, Dorsten, Germany
Input drive Electric motor, elastic coupling
Drive rating P = 45 kW
Drive speed n = 985 r/min
Total reduction i = 159,4 : 1
Output drive Hollow shaft with shrunk-on washer, cartridge-type
gearbox
Output torque M2 = 70 000 Nm
Dimensions 800 ∅ × 1 130 mm
Mass G = 1 800 kg
Gears Spur and planetary gears case hardened
Internally geared rings heat treated
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 320
Operating temperature T ≈ 90 °C (oil bath)
Sealing Radial shaft seals on input and output shafts
Bearings
No. 1 shaft 2 × 6215
No. 2 shaft 2 × 6024
3 planetary wheels 3 × 22311 E
3 planetary wheels 3 × 22315 E
No. 3 shaft 1 × NCF 1852 V; 1 × NCF 1856 V
Minimum bearing life L10h = 50 000 operating hours
8 Application examples
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167
8
8 Application examples
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168
Spur, four-stage, vertical
Application Drive for mixer for chemical industry
Manufacturer Jahnel Kestermann, Bochum, Germany
Input drive Electric motor (asynchronous or DC)
Drive rating P = 75 (or 55) kW
Drive speed n = 1 500 (or 1 000) r/min
Total ratio i = 1 : 206,6
Power take-off Flanged coupling
Output torque M2 max = 112 500 Nm
Dimensions 1 320 × 1 000 × 1 720 mm
Mass G = 4 700 kg
Gears Helical cut, case hardened, ground
Lubrication type Oil bath and circulating oil
Lubricant Oil with viscosity to ISO VG 220
Operating temperature T = 70 °C
Sealing Radial shaft seal at input side
Oil cover and V-ring on output shaft
Bearings
No. 1 shaft 2 × 33215
No. 2 shaft 2 × 32314
No. 3 shaft 1 × 30218; 1 × 32318
No. 4 shaft 2 × 32322
No. 5 shaft 2 × NCF 1872 V
Mixer shaft 2 × 32038 X; 1 × 23060 CCK/W33 + OH 3060 H
Minimum bearing life L10h = 30 000 operating hours
Remarks Permissible noise level 75 dBA
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169
8
8 Application examples
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Spur, four-stage, vertical
Application Surface ventilator
Manufacturer Brook Hansen, Edegem, Belgium
Input drive Electric motor
Drive rating P = 75 kW
Drive speed n = 1 475 r/min
Total ratio i = 1 : 40
Output torque M2 = 35 000 Nm
Dimensions 760 × 925 × 1 075 mm
Mass G = 860 kg
Gears Helical cut, case hardened, ground
Lubrication type Circulating oil; bearing at output side of output
shaft grease lubricated
Lubricant Mineral oil with EP additives
Sealing Double action labyrinth at input side;
rising pipe + radial shaft seal with dust lip
at output side
Bearings
No. 1 shaft 2 × T2ED 050
No. 2 shaft 2 × 32313
No. 3 shaft 2 × 22317 E
No. 4 shaft 1 × 22228 E; 1 × 22328 E
Minimum bearing life L10h = 50 000 operating hours
Remarks External radial force 4 500 kN and
external axial force 8 900 kN on the output shaft
170
8 Application examples
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171
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8 Application examples
Page 58
172
Spur, split power
Application Drive for briquetting roll press
Manufacturer Flender ESAT, Herne, Germany
Input drive Electric motor (asynchronous), V-belts
Drive rating P = 630 kW
Drive speed n = 1 358 r/min
Total ratio i = 1 : 97,4
Power take-off Toothed coupling
Output torque M2 = 432 000 Nm
Dimensions 1 620 × 3 510 × 1 200 mm
Mass G = 17 000 kg
Gears Helical cut, case hardened, ground
Lubrication type Gears: oil bath
Bearings: circulating oil
Lubricant Mineral oil with viscosity to ISO VG 320
Operating temperature T = 60 °C (oil sump)
Sealing Radial shaft seals at input and output sides
Bearings
No. 1 shaft 1 × 22330 CC/W33; 1 × 22324 CC/W33
No. 2 shaft 2 × 24132 CC/W33
No. 3 shaft 2 × NJG 2330 VH
No. 4 shaft (2×) 4 × 23238 CC/W33
No. 5 shaft (2×) 2 × 23068 CC/W33; 2 × 23976 CC/W33
Minimum bearing life L10h = 50 000 operating hours
Remarks Power split with independent load compensation
on the axially freely adjustable double helix pinion
shaft of the 3rd stage
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173
8
8 Application examples
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174
Spur gear, single stage
Application Pinion stand of hot strip finishing mill
Manufacturer SMS – Schloemann-Siemag AG, Hilchenbach,
Germany
Input drive Electric motor (DC), toothed coupling
Rating P = 10 000 kW
Speed n = 0 to 36,4 or 80,24 r/min
Total ratio i = 1 : 1
Power take-off Toothed coupling, rolls
Output torque M2 = 2 × 1 310 000 Nm
Dimensions 2 660 × 5 420 × 2 630 mm
Mass G = 49 100 kg
Gears Double helical, case hardened
Lubrication type Circulating oil with water cooler
Lubricant Oil with viscosity to ISO VG 460
Seals Labyrinth seals at input and output sides
Bearings
No. 1 shaft 1 × 240/600 CA/W33 and 1 × 240/500 CA/W33
No. 2 shaft 1 × 24184 ECA/W33 and 1 × 240/500 CA/W33
Minimum bearing life L10h = 20 000 operating hours
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175
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8 Application examples
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176
Spur, two-stage
Application Drive for vertical edging stand of a blooming mill
(hot plate mill)
Manufacturer SMS – Schloemann-Siemag AG, Hilchenbach,
Germany
Input drive 2 electric motors (DC) via toothed coupling
Drive rating P = 2 × 1 600 kW
Drive speed n = 0 to ± 140/273 r/min
Total ratio i = 1 : 7,51
Power take-off 2 cardan shafts
Output torque M2 = 2 × 1 350 000 Nm
Dimensions 5 600 × 10 430 × 3 700 mm
Mass G = 258 000 kg
Gears Helical cut, ground;
1st stage and pinion,
2nd stage: case hardened; gear,
2nd stage: heat treated
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 460
Operating temperature T = 40 °C (oil supply temperature)
Sealing Labyrinths at input and output sides
Bearings
No.1 shaft (2×) 2 × taper roller bearing 331197 A
(384,175 × 546,1 × 222,25 mm)
2 × cylindrical roller bearing BC2B 320041
(380 × 540 × 200 mm)
No. 2 shaft (2×) 2 × taper roller bearing BT2B 332663/HB1
(519,112 × 736,6 × 258,762 mm)
2 × cylindrical roller bearing 316077 A
(440 × 620 × 225 mm)
No. 3 shaft (2×) 2 × taper roller bearing BT2B 328310/HA4
(1 562,1 × 1 806,575 × 279,4 mm)
2 × cylindrical roller bearing BC1B 322416/HA1
(1 700 × 2 060 × 160 mm)
Weight balancing (2×) 4 × 29330 E
Minimum bearing life L10h = 20 000 operating hours
Remarks The two rolls are driven via two mechanically
separate, electrically synchronised motors
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8
8 Application examples
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178
Spur, with shift
Application Drive for a Sendzimir rolling mill
Manufacturer ERCMD Engrenages et Réducteurs Citroen-
Messian-Durand, Velizy-Villacoublay, France,
for DMS Seclin, France
Input drive Electric motor (DC), toothed coupling
Drive rating P = 6 000 kW
Drive speed n = 0 to 350/850 r/min
Total ratio i1 = 1 : 1; i2 = 1,595 : 1
Power take-off 4 toothed couplings
Output torque 4 × M2 = 40 925 Nm
Dimensions 2 430 × 4 190 × 4 820 mm
Mass G = 52 000 kg
Gears Input stage: helical cut, case hardened, ground
Second stage and pinion stand: double helix
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 460
Operating temperature T = 45 °C (oil inlet temperature)
Seals Felt seals with labyrinth on input shaft; radial shaft
seals on output shafts
Bearings
No. 1 shaft 1 × 23168 CC/C3W33; 1 × 23080 CAC/C3W33
No. 2 shaft 1 × 23168 CC/C3W33; 1 × 23164 CC/C3W33
No. 3 shaft 2 × NU 19/670 ECMA
No. 4 shaft 2 × 23080 CAC/C3W33
No. 5 shafts (2×) 4 × 23244 CC/C3W33; 2 × QJ 1044 N2MA/C4
No. 6 shafts (2×) 4 × 23044 CC/C3W33; 2 × QJ 1044 N2MA/C4
Minimum bearing life L10h = 50 000 operating hours
Remarks Axial forces on the output shafts 40 000 N per
shaft
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8
8 Application examples
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180
Spur, with shift
Application Drive for aluminium foil mill (rolling mill)
Manufacturer David Brown, Huddersfield, Gt. Britain
Input drive Two electric motors; elastic couplings
Drive rating P = 2 × 3 000 kW
Drive speed n = 374 or 935 r/min
Total ratio i1 = 1 : 1; i2 = 1 : 2,5
Power take-off Torsionally elastic coupling
Output torque 2 × M2 max = 190 900 Nm
Dimensions 1 810 × 4 530 × 4 135 mm
Mass G = 45 700 kg
Gears Double helix, case hardened, ground
Lubrication type Circulating oil
Lubricant EP oil with viscosity to ISO VG 220
Operating temperature T = 70 °C
Sealing Labyrinth with radial shaft seal on input and
output shafts
Bearings
No. 1 shafts (4×) 8 × 22244 CC/W33
No. 2 shafts (4×) 8 × 23248 CC/W33
No. 3 shaft 2 × 230/500 CA/W33
No. 4 shaft 2 × 60/500 MA
No. 5 shaft 2 × 24068 CC/W33
No. 6 shaft 2 × 24064 CC/W33
Minimum bearing life L10h = 50 000 operating hours
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Spur, with shift, one-stage
Application Drive for reeler for hot rolled sheet
Manufacturer SMS – Schloemann-Siemag AG, Hilchenbach,
Germany
Input drive Electric motor (DC), toothed coupling
Drive rating P = 1 100 kW
Drive speed n = 0 to 400 or 1 200 r/min
Total ratio i1 = 1 : 2,37; i2 = 1 : 5,19
Power take-off Toothed coupling
Output torque M2 = 112 000 or 236 000 Nm
Dimensions 2 075 × 2 900 × 1 620 mm
Mass G = 17 885 kg
Gears Helical cut, case hardened, ground
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 150
Sealing Labyrinths at input and output sides
Bearings
Shaft No. 1 1 × 23240 CC/C3W33; 1 × 24134 CC/C3W33
Shaft No. 2 1 × 23056 CC/C3W33; 1 × NNU 4960 B/SPC3W33
2 shifting gears 4 × 239/500 CA/C3W33
Minimum bearing life L10h = 20 000 operating hours
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Planetary
Application Drive for rolls of continuous casting plant
Manufacturer Brevini Riduttori, Reggio Emilia, Italy
Input drive Electric or hydraulic motor
Drive rating P = 30 kW
Drive speed n = 1 200 r/min
Total reduction i = 555 : 1
Output torque M2 max = 300 000 Nm
Dimensions 970 × 1 280 mm
Mass G = 1 850 kg
Gears Case hardened
Lubricant EP oil SAE 80
Operating temperature T = 60 °C
Sealing Radial shaft seals
Bearings
No. 1 shaft 1 × 16022
2nd planetary stage 6 × AL-NNC 5010 CV
3rd planetary stage 6 × AL-NNC 5016 CV
4th planetary stage 10 × AL-NNC 5022 CV
No. 4 shaft 2 × NCF 2972 V
Minimum bearing life L10h = 100 000 hours
Remarks Gearbox comprises modules from series units
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Spur, three-stage
Application Single screw extruder
Manufacturer Santasalo GmbH, Wuppertal, Germany
Input drive Electric motor (DC), elastic coupling
Drive rating P = 600 kW
Drive speed n = 1 364 r/min
Total reduction i = 1 : 59,3
Power take-off Extruder screw
Output torque M2 = 250 000 Nm
Dimensions 1 580 × 2 680 × 1 665 mm
Mass G = 12 000 kg
Gears Helical cut, case hardened, ground
Lubrication type Circulating oil
Lubricant Oil with viscosity to ISO VG 320
Operating temperature T = 70 °C
Sealing Radial shaft seals on input and output shafts
Bearings
No. 1 shaft 2 × 22328 CC/W33
No. 2 shaft 2 × NJG 2330 VH
No. 3 shaft 2 × NJG 2338 VH
No. 4 shaft 1 × NCF 3068 V; 1 × NCF 2972 V;
1 × 29480 EM; 1 × 81164
Minimum bearing life 40 000 operating hours
Remarks Noise damping cover to reduce noise level
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8
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8 Application examples
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Spur switching gear, two-stage
Application Drive for plastic extruder
Manufacturer Zahnradwerk Köllmann, Wuppertal, Germany
Input drive Electric motor (DC), elastic coupling
Rating P = 43 to 49 kW
Speed n = 1 790 r/min
Total ratio i1 = 1 : 23,95, i2 = 1 : 17,43
Power take-off Socket on extruder screw
Output torque M2 = 5 600 Nm (1st gear)
M2 = 4 600 Nm (2nd gear)
Dimensions 430 × 740 × 755 mm
Mass G = 670 kg
Gears Helical cut, case hardened, ground
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 320
Operating temperature Tmax = 70 °C
Seals Fluoro rubber radial shaft seals
Bearings
No. 1 shaft 1 × 22309 CC; 1 × NJ 309 ECJ
No. 2 shaft 1 × 22311 E; 1 × NJ 311 ECJ; 4 × K 90×98×27
No. 3 shaft 2 × 6221; 1 × 29422 E
Minimum bearing life L10h = 25 000 operating hours
Remarks Noise level < 80 dBA
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190
Spur, two-stage
Application Drive for test rig
Manufacturer Voith, St. Pölten, Austria
Input drive Hydraulic motor
Drive rating P = 125 kW
Drive speed n = 465 to 1 953 r/min
Total ratio i = 1 : 9,766
Output torque M2 = 25 000 Nm
Dimensions 740 × 1 219 × 630 mm
Mass G = 1 135 kg
Lubrication type Oil bath
Lubricant Oil with viscosity to ISO VG 220
Sealing Radial shaft seals at input and output sides
Bearings
No. 1 shaft 2 × NJ 2316 ECM/C3; 1 × QJ 313 N2MA/C3
No. 2 shaft 2 × NJ 2320 ECMA/C3
No. 3 shaft 2 × 23230 CC/C3W33
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8 Application examples