2 Worldwide Excellence in Air Technology – Dedicated to the Success of Your Pneumatic Applications Air Motors/Gearmotors Known industry wide for their rugged construction and reliability, Gast Air Motors and air powered Gearmotors are used in a variety of applications. Lubricated Air Motors come in seven basic models up to 9.5 HP (7,1 kW); motor speeds are variable from 300 to 10,000 RPM. Oilless versions, which require absolutely no lubrication, come in three basic models ranging from .18 to .82 HP (0,13 to 0,61 kW) and with motor speeds up to 4,000 RPM. Choose from hub, foot, face, NEMA C-Flange or Metric D Series interface mountings and clockwise, counter-clockwise or reversible rotations. Four and eight vane models are also available. Air powered Gearmotors are available in right-angle and in-line models offering a maximum torque range of 73 to 5,200 lb. in. (8 to 587 Nm) and gear ratios from 10:1 to 60:1 single reduction gear reducers. A full line of recommended accessories is also available. • Minimum maintenance. You can put a Gast Air Motor in places where they will not get much service, because there’s virtually nothing to service on a Gast Air Motor, providing it is operated on a clean, dry, and lubricated air supply*. • Will not burn out. Gast Air Motors can be stalled or overloaded for long periods without damage. • Low price. Cost is less than other motors of equal horsepower and capabilities. • Operate in all positions. Mount them sideways, upside-down, or in any position so long as adequate lubrication* is provided and end thrust is kept to design limits. Gearmotors will op- erate in almost any position except with the output shaft up. • No-shock starts. Because Gast Air Motors go to work with air-cushioned smoothness, they cut stress on your equipment. • Self-sealing vanes. Vanes are self-sealing and automatically take up their own wear, thus ensuring con- stant output for thousands of hours of use. • Mounting flexibility. Foot, hub, face, NEMA-C or metric flange mountings are standard equipment for most air motor sizes. • Four-vane or eight-vane. Four-vane units meet most requirements, but for more precise inching control and minimum blow-by in applications where motor is operating in a stalled condition, specify eight-vane models. • Long-life accessories. To ensure long life, Gast offers accessories designed to extend unit life including air fil- ters that remove water and particles down to 5 microns, and air line lubricators that supply a constant flow of lubrication auto- matically*. We can supply a pressure regu- lator that provides precise control of power and operating speed. Options like these help you get smooth performance with minimum maintenance. *Non-lubricated series does not require a lubricator • Variable speed. You can vary motor speed between 300 and 10,000 rpm (depending on model selection) with a simple valve put in between the air source and air motor. • Non-electrical sparking. As a non-electrical device, the possibility of explosion from igniting flammable gases is reduced. • Instantly reversible. A four-way valve in the air line enables a Gast Air Motor to be instantly reversed. A turn of the valve causes a complete reversal of rotation, even when the motor is running at full speed. • Cool running. As the air motor turns, expanded air cools the motor. Units can be used in ambient temperatures up to 250°F (120°C). • Compact and portable. Get maximum horsepower with minimum size and weight. Why you should look into a Gast Air Motor
31
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2
Worldwide Excellence in Air Technology –Dedicated to the Success of Your Pneumatic Applications
Air Motors/GearmotorsKnown industry wide for their rugged construction and reliability, Gast AirMotors and air powered Gearmotors are used in a variety of applications.
Lubricated Air Motors come in seven basic models up to 9.5 HP (7,1 kW);motor speeds are variable from 300 to 10,000 RPM. Oilless versions, which requireabsolutely no lubrication, come in three basic models ranging from .18 to .82 HP(0,13 to 0,61 kW) and with motor speeds up to 4,000 RPM. Choose from hub, foot,face, NEMA C-Flange or Metric D Series interface mountings and clockwise,counter-clockwise or reversible rotations. Four and eight vane models are alsoavailable.
Air powered Gearmotors are available in right-angle and in-line modelsoffering a maximum torque range of 73 to 5,200 lb. in. (8 to 587 Nm) and gearratios from 10:1 to 60:1 single reduction gear reducers. A full line of recommendedaccessories is also available.
• Minimum maintenance.You can put a Gast Air Motor in placeswhere they will not get much service,because there’s virtually nothing to service ona Gast Air Motor, providing it is operated on aclean, dry, and lubricated air supply*.
• Will not burn out.Gast Air Motors can be stalled or overloadedfor long periods without damage.
• Low price.Cost is less than other motors of equalhorsepower and capabilities.
• Operate in all positions.Mount them sideways, upside-down,or in any position so long as adequatelubrication* is provided and end thrustis kept to design limits. Gearmotors will op-erate in almost any position exceptwith the output shaft up.
• No-shock starts.Because Gast Air Motors go to workwith air-cushioned smoothness, theycut stress on your equipment.
• Self-sealing vanes.Vanes are self-sealing and automaticallytake up their own wear, thus ensuring con-stant output for thousands of hours of use.
• Mounting flexibility.Foot, hub, face, NEMA-C or metric flangemountings are standard equipment for mostair motor sizes.
• Four-vane or eight-vane.Four-vane units meet most requirements,but for more precise inching control andminimum blow-by in applications wheremotor is operating in a stalled condition,specify eight-vane models.
• Long-life accessories.To ensure long life, Gast offers accessoriesdesigned to extend unit life including air fil-ters that remove water and particles downto 5 microns, and air line lubricators thatsupply a constant flow of lubrication auto-matically*. We can supply a pressure regu-lator that provides precise control of powerand operating speed. Options like thesehelp you get smooth performance withminimum maintenance.
*Non-lubricated series does not require alubricator
• Variable speed.You can vary motor speed between 300and 10,000 rpm (depending on modelselection) with a simple valve put inbetween the air source and air motor.
• Non-electrical sparking.As a non-electrical device, the possibility ofexplosion from igniting flammable gases isreduced.
• Instantly reversible. A four-way valve in the air line enablesa Gast Air Motor to be instantly reversed. Aturn of the valve causes a completereversal of rotation, even when the motor isrunning at full speed.
• Cool running.As the air motor turns, expanded air coolsthe motor. Units can be used in ambienttemperatures up to 250°F (120°C).
• Compact and portable.Get maximum horsepower with minimumsize and weight.
The chart below shows general performance ranges of ourlubricated Air Motors. See if we have the right offering for yourapplication.
How to select an air motor.Air motors differ in many ways from otherpower sources. These unique operatingcharacteristics must be considered whenselecting an air motor for a particular job.
It is easy to change horsepower and speedof an air motor by throttling the air inlet. Therefore,the best rule of thumb for selecting an air motor is to chooseone that will provide the horsepower and torque needed usingonly two-thirds (2/3) of the line pressure available. The full airline pressure will then be available for overloads and starting.
• Output Power vs Speed.The output power of an air motor is relative to speed andto air line pressure.
• Torque vs Speed.1. An air motor slows down when load increases…
at the same time its torque increases to a point whereit matches the load. It will continue to provide increasedtorque all the way to the stalled condition, and it canmaintain the stalled condition without any harm to the motor.
2. As the load is reduced, an air motor will increase speedand the torque will decrease to match the reduced load.
3. When the load on an air motor is either increased ordecreased, speed can be controlled by increasing ordecreasing air pressure.
4. Starting torque of an air motor is lower than runningtorque. While this provides smooth, no-shock starting,it is necessary to have additional air line pressure forstarting under heavy loads.
• Air Consumption vs Speed.Air consumption increases as speed and air pressure is increased.
Use of Air Motors in Hazardous AtmospheresAt the present time, there are no known standards governingthe operation of air motors in hazardous atmospheres. However,there are several points regarding the safety of air motors.
First of all, an air motor is not a source of electric sparks. How-ever, it is possible that an article which is not part of the air mo-tor (e.g., wrenches, hammers, etc.) could create a spark bysharply impacting a cast iron or aluminum case or the steel shaftof the air motor. [Note that electric motor enclosures for bothclass I and II hazardous locations can be made of “…iron, steel,copper, bronze, or aluminum…” (UL 674, Electric Motors andGenerators – Hazardous Locations, June 23, 1989; paragraph4.2, page 6)].
Second, an air motor housing is not designed to contain aninternal explosion as is an explosion-proof electric motor. Theonly possible internal source of ignition in an air motor is acontact between the stationary housing components and the
rotating elements that might create a spark. The likelihood ofthis occurring is reduced by the fact that the contact must bemade at precisely the same time as a flammable or explosivegas is introduced into the air motor in a sufficient quantity toachieve a flammable or explosive mixture while overcoming thepositive pressure of the driving gas. In other words, althoughhighly improbable, an internal explosion in an air motor is possible.
Finally, an air motor is designed to be operated by compressedair, the expansion of which in normal operation creates a coolingeffect. As a result, the temperature of the air motor will not exceedthe higher of the temperatures of the surrounding atmosphere orthe air delivered to the inlet.
We do not guarantee the safety of every application, but to ensurethe safe operation of an air motor in your application, alwaysfollow the product directions and consult with a qualified engineer.
Get the right air motor with all the right options.
Pictorial and dimensional data is subject to change without notice.
The information presented in this catalog is based on technical data and test results of nominal units. It is believed to be accurate and is offered asan aid in the selection of Gast products. It is the user’s responsibility to determine suitability of the product for intended use and the user as-sumes all risk and liability whatsoever in connection therewith.
*Oilless models
OPERATING DATA MAXIMUM TORQUE
MAX. OUTPUT TORQUE MAX. AIR MAX.
GEARSPEED
LINEPOWER CONSUMPTION SPEED
PageMODEL RATIO rpm PRES. hp kW lb. in. Nm cfm m3/h rpm lb. in. Nm No.
A – 100 psig and 7,0 bar line pressure for imperial and metric data, respectively.B – 80 psig and 5,5 bar line pressure for imperial and metric data, respectively.C – 60 psig and 4,1 bar line pressure for imperial and metric data, respectively.
OPERATING DATA MAXIMUM TORQUE
MAX. OUTPUT TORQUE MAX. AIR MAX.SPEED POWER CONSUMPTION SPEED
PageMODEL rpm hp kW lb. in. Nm cfm m3/h rpm lb. in. Nm No.
Air Motors up to 9 hp, speeds from 300 to 2,000 rpm, max. pressure 100 psi (7 bar)
280
240
200
160
120
80
40
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
CFM
(FRE
E AI
R) C
ONS
UMPT
ION 140
120
100
80
60
40
20
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
FREE
AIR
CO
NSUM
PTIO
N ( l/
s) 48043238433628824019214496480
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar
7,0 bar100 psi
400
350
300
250
200
150
100
50
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
TORQ
UE L
B. IN
.
50
40
30
20
10
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
TORQ
UE ( N
m)
100 psi
Torque vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar
7,0 bar
10
8
6
4
2
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
HORS
EPOW
ER
7
6
5
4
3
2
1
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
KILO
WAT
T
Output Power vs. Speed
40 psi
20 psi
60 psi
80 psi
100 psi
1,4 bar
2,8 bar
4,2 bar
5,6 bar
7,0 bar
0.03 X 45°0,76 CHAM.
8.00203,2
5.88149,4
45°TYP
0.87450.8750DIA.22,2122,23
2.1354,1
13.65 MAX.346,7
0.19 SQ. KEY4,822.1253,8
7.28184,9
5.88 BOLT149,3 CIRCLE
1.4135,8
0.133,3
6.62168,1
4.4974.500114,2114,3
0.41 HOLE (4)10,4
4.24107,7 1-1/4 NPT PIPE
2.7569,96.75
171,5
3.3885,8
4.00101,6
0.38 -16 UNC-2B TAP THRU (4) HOLES9,7
0.44 -14 UNC-2B X 0.62 DP (4)11,1 15,7
8.00203,2
4.38111,3
45°
1.125 DIA.28,57
4.06103,1
14.06357,1
2.5665,00.25 SQ. KEY6,35
2.1253,8
7.34186,4
2.44 R62,0
2.0050,8
1.5639,6
8.44214,4
5.62142,7
7.06179,3
4.00101,6
3.87598,4
5.78146,8
0.41 HOLE (4)10,4
0.7519,1
3.6291,9
B
C
A
2.7569,9
3.3885,8
3.3885,8
Rotation A B C
Single direction 1 PIPE NONE 11/4 PIPE
Reversible 11/4 PIPE 11/4 PIPE NONE
inches / mm
inches / mm
15
Non-lubricated Air Motors
The NL Series - an alternative toour traditional lubricated stylesbecause no lubricator is necessary
Gast's non-lubricated Air Motorsprovide the advantages andbenefits of traditional lubricated AirMotors which include:
• Variable speed
• Non-electrical sparking
• Cool running
• Minimal maintenance
• No-shock starts
• Any plane operation
For those air motorapplications wherecontaminated exhaustcannot be tolerated in theworkplace, Gast'snon-lubricated air motors,the NL series, provide thesolution.
• Rugged and reliable
Like our traditional lubricated air motors, the NLseries will provide thousands of hours ofservice-free life. Vanes are just as easy andinexpensive to replace.
• Performance flexibility
Gast's non-lubricated air motors are designedso that compressor carry-over will not gum upthe vanes. In fact, while no lubricationwhatsoever is required to operate the motors,small amounts of oil and water will actuallyimprove the performance.
• Corrosion resistant
Because the body, rotor and end plates arespecially treated, these air motors can tolerateunfavorable moisture-laden conditions.
• No oil expenses
If you are using several quarts of oil throughoutthe year, you'll eliminate that expense withnon-lubricated air motors.
• No periodic inspection
With no in-line lubrication system to replenish,the need for time consuming maintenancechecks is eliminated.
16
Non-lubricated Air Motors
MODEL
NL22-NCC-1(4 Vanes, CCW Rotation)
NL22-NCW-2(4 Vanes, CW Rotation)
NL22-FCC-3(4 Vanes, CCW Rotation)
NL22-FCW-4(4 Vanes, CW Rotation)
Net wt. 3 lbs. (1,4 kg)
FEATURES• Hub or foot mounting• Treated body, rotor, and end plates
for corrosion resistance• No lubrication necessary - no contaminated air in the work area• Any plane operation• Muffler AF350
unattached) and will add approx. 2"height when installed
• Foot kit AL220 - each of these modelscan be turned into foot mountedstyles with the installation of optionalfoot kit AL220, which will add approx.2" height to the air motor
57,1057,152.2482.250
12,7012,71.5001.5003
2X 10,4.41
FLAT11,4.45
147,85.82
82,73.25
14,5.57
25,41.0028,41.12
2x 29,61.17
2x 20,6.81
47,81.88
63,52.50
31,81.25
2x 15,9.63
2x 31,81.25
56,12.21
105,44.15
4x 1/4-20 x .44 DP
1/4 NPT 1/4 NPT
100,13.94O
O
O
11,1
4x 1/4-20 x .44 DP.11,1
31,81.25 63,5
2.50
47,81.88
TYP.
52,82.08 TYP.
52,82.08
52,82.08
TYP.
52,82.08
165,16.50
2x 15,9.63
2x 31,81.25
1/4 NPT1/4 NPT
ON 5.88 BOLT CIRCLE4x 3/8-16 UNC-2B THRU
15,86215,875.6245.6250
114,2114,34.4974.500
2X 10,4.41
17,88.704
35,81.41
52,32.06
3,0.12 55,5
2.19172,26.78
2x 45,31.79 2x
20,6.81
.19 SQUARE KEY
4x 1/4-20 x .44 DP.
O
TYP.
O
O
M8 x 1.25 TAP THRU (4)
TYP.
11,1
3/8 BSP 3/8 BSP
inches / mm
Hub mounting (NL32-NCC-1, NL32-NCW-2)
inches / mm
NEMA 56C, U.S. - (NL32-NCC-5, NL32-NCW-6)D71 Flange, Metric - (NL32-NCC-7, NL32-NCW-8)
18
up to .82 hp, speeds from 500 to 2,000 rpm, maximum pressure 80 psi (5,6 bar)Non-lubricated Air Motors
MODEL
NL42-NCC-1(4 Vanes, CCW Rotation)
NL42-NCW-2(4 Vanes, CW Rotation)
Net wt.18 lbs. (8,2 kg)
NL42-NCC-5 (4Vanes, CCW Rotation)
NL42-NCW-6(4 Vanes, CW Rotation)
NL42-NCC-7(4 Vanes, CCW Rotation)
NL42-NCW-8(4 Vanes, CW Rotation)
Net wt. 21 lbs. (9,5 kg)
FEATURES• Hub or foot mounting• Treated body, rotor, and end plates
for corrosion resistance• No lubrication necessary - no contaminated air in the work area• Any plane operation• Plastic muffler AL445 offers enhanced
sound reduction and will add approx.5" height to the porting when installed
unattached) and will add approx. 2"height when installed
• Foot kit AL414 - each of these modelscan be turned into foot mounted styleswith the installation of optional foot kitAL414, which will add approx. 2"height to the air motor
20
10
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
CFM
(FRE
E AI
R) C
ONS
UMPT
ION
15
10
5
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
FREE
AIR
CO
NSUM
PTIO
N ( l/
s)
72
60
48
36
24
12
0
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
40 psi
20 psi
60 psi
80 psi4,2 bar
5,6 bar
2,8 bar
1,4 bar
40
5
15
2530
35
45 20
1
0.75
0.5
0.25
0
SPEED – RPM (OUTPUT)0 500 1000 1500
HORS
EPOW
ER 0,5
0,4
0,3
0,2
0,1
0
SPEED – RPM (OUTPUT)0 500 1000 1500
WA
KILO
TT
Output Power vs. Speed
40 psi
20 psi
60 psi
80 psi
1,4 bar
2,8 bar
4,2 bar
5,6 bar
2000 2000
0,6
0,7
20151050
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
TORQ
UE L
B. IN
.
5
4
3
2
1
0
SPEED – RPM (OUTPUT)0 500 1000 1500 2000
TORQ
UE ( N
m)
Torque vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar
2530354045
• Hub mounting model shown withoptional foot assembly kit whichcan be purchased separately.
• Flange style is shown in schematic
31,81.25
31,81.25
100,13.94
56,42.22
105,44.15
2X 22,2.88
2x 44.51.75
4 X 1/4-20 x .44 DP
2x
57,157,152.2482.250
12,6912,7
.4995
.5000
FLAT11,43.45
99,83.93 178,2
7.02
25,41.00
14,5.57
28,41.12
34,71.37
44.51.75
2X 22,2.88
O
4X 1/4-20 X .44 DP.
1/4 NPT
11,111,1
2x
114,22114,34.4974.500
15,8615,87.6245.6250
17,88.704
52,32.06
3,0.12
35,81.41
72,62.86 203,4
8.01
2X 44,51.75
50,41.99
2X 22,2.88
.19 SQUARE KEY
4X 1/4-20 X .44 DP.
31,81.25 63,5
2.50
165,16.50
TYP.
52,82.08 TYP.
52,82.08
TYP.
52,82.08
TYP.
52,82.08
100,13.94
47,41.87
2X 22,4.88
2X 44,51.75
1/4 NPT1/4 NPT
ON 5.88 BOLT CIRCLE3/8-16 UNC-2B THRU (4)
O
O
O
O
3/8 BSP 3/8 BSP
10 MM THRU (4)O
11,1
inches / mm
Hub mounting (NL42-NCC-1, NL42-NCW-2)
inches / mm
NEMA 56C, U.S. - (NL42-NCC-5, NL42-NCW-6)D71 Flange, Metric - (NL42-NCC-7, NL42-NCW-8)
19
MODEL
NL52-NCC-1(4 Vanes, CCW Rotation)
NL52-NCW-2(4 Vanes, CW Rotation)
Net wt.13 lbs. (6 kg)
NL52-NCC-3(4 Vanes, CCW Rotation)
NL52-NCW-4(4 Vanes, CW Rotation)
NL52-NCC-5(4 Vanes, CCW Rotation)
NL52-NCW-6(4 Vanes, CW Rotation)
Net wt. 14.5 lbs. (6,6 kg)
FEATURES• Hub, NEMA 56C, 6AM, or foot
mounting• Treated body, rotor, and end plates
for corrosion resistance• No lubrication necessary - no contaminated air in the work area• Any plane operation• Muffler AC990
models can be turned into footmounted styles with the installationof optional foot kit AL414 , whichwill add approx. 2" height to the airmotor
• Hub mounting model shown withoptional foot assembly kit which canbe purchased separately.
inches / mm
Hub mounting (NL52-NCC-1, NL52-NCW-2)
inches / mm
NEMA 56C, U.S. - (NL52-NCC-3, NL52-NCW-4)
40
20
00 500 1000 1500 2000
CFM
(FRE
E AI
R) C
ONS
UMPT
ION
1510
5 0
SPEED – RPM (OUTPUT)- - - - -Intermittent (10 minutes on, 10 minutes off) Duty Only
0 500 1000 1500 2000
FREE
AIR
CO
NSUM
PTIO
N ( l/
s)
72
60
48
36
24
12
0
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
40 psi
20 psi
60 psi
80 psi 5,6 bar
2,8 bar
1,4 bar
4,2 bar
SPEED – RPM (OUTPUT)- - - - -Intermittent (10 minutes on, 10 minutes off) Duty Only
80
10
30
5060
70
100
20
2500 3000
100 psi
25 30 35 40 45
2500 3000
7,0 bar
3.0
2.0
1.5
.5
0
SPEED – RPM (OUTPUT)- - - - -Intermittent (10 minutes on, 10 minutes off) Duty Only
0 500 1000 1500
HORS
EPOW
ER 1,6
1,2
0,8
0,4
0
SPEED – RPM (OUTPUT)- - - - -Intermittent (10 minutes on, 10 minutes off) Duty Only
0 500 1000 1500
WA
KILO
TT
Output Power vs. Speed
60 psi
40 psi
80 psi
100 psi
1,4 bar
2,8 bar
4,2 bar
5,6 bar
3000 2000
2,0
2,4
1.0
2000 2500
2.5
20 psi
7,0 bar
inches / mm
6AM Hub Mounting (NL52-NCC-5, NL52-NCW-6)Mounting identical to 6AM-NRV-7A for field replacement
up to 2.5 hp, speeds from 500 to 2,000 rpm, maximum pressure 80 psi (5,6 bar)Non-lubricated Air Motors
UNC-2B x .44 DP. 11,1
4x 1/4-20
2x 1/2 NPT
SQ.KEY 8.00 203,2
1.25 31,7
1.25 31,7
2.08 52,8
2.08 52,8
2.08 52,8
2.08 52,8
2 x 1.75 44,5
2.06 52,3
2.86 72,6
.12 3,0
.0194.83
6.50 165,1
4 x 3/8-16 UNC-22B THRU (4)ON B5.88 BOLT CIRCLE
4.504.497114,3
114,220.70417,88
.62515,9
2 x 1.98 49,5
2 x 1.76 44,7
60
40
20
0
SPEED – RPM (OUTPUT)- - - - -Intermittent (10 minutes on, 10 minutes off) Duty Only
0 500 1000 1500 2000
TORQ
UE L
B. IN
.
10
8
6
4
2
0
SPEED – RPM (OUTPUT)- - - - -Intermittent (10 minutes on, 10 minutes off) Duty Only
0 500 1000 1500 2000
TORQ
UE ( N
m)
Torque vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar80
100
120
2500
100 psi
2500
127,0 bar
2.7269
2.9475
1/2”NPTAC990
SQ.KEY
.43 10,9
1.25 31,7
1.25 31,7
.43 10,9
1.44 36,6
2 x .75 19,0
1.30 33,0 3 x 1/4-20
UNC-2B x .44 DP
4.16 105,7
1.30 33,0
2 x 1.75 44,4
2.25057,1
2x 1/2 NPT
2 x 1.36 34,5
.62515,9
4 x 1/4-20 UNC-2B x .44 DP
2 x 1.76 44,7
.57 14,5
2.68 68,1
8.00 203,2
2.2456,9.019
4.83
0.70417,88
.0194.83
2.2857,91
8.00 203,2
.389,6
1.5639,6
2 x 1/2 NPT
2 x 1.76 44,7
4 x 1/4-20 UNC-2B x .44 DP.
2.1153,6
.62515,86 Shaft
4.53115,0
2.2557,1
SQ KEY
4.50114,3
1.2531,7
1.2531,7
2.0050,8
1.0055,4
3 x 5/16-18 UNC-2B x .44 DP.
1.7343,9
2 x 1.7544,4
1.7343,9
.0194.83
2.2857,91
20
Air-Powered Gearmotors
More reasons why you shouldswitch from electricity to air.If you compare Gast Air-Powered Gearmotors with anyelectric-powered gearmotor, there’s really no comparison.Here’s why:• More horsepower.
Size for size, weight for weight, you can’t beat a Gast Gearmotor.A typical rotary vane air motor – the type used in gearmotors –developing 21/2 hp (1,9 kW) at 1800 rpm and 90 psi (6,2 bar), weighsjust 17 pounds (7,7 kg). A comparable electric motor may be twoor three times heavier.
• More speed control.You can’t get more precise turning power than with a Gast Gearmotor.In applications where you need variable speed – like bolt tensioningequipment or rock drilling rigs – one-speed electric motors just won’t fitthe bill. Precise lifting, lowering, or turning is simple with Gast Gearmotors.
• More flexibility.More than most standard electric-powered gear reducers can provide. GastGearmotors give you infinitely variable turning power from 73 to5200 lb. in. (8 to 587 Nm) of torque. And Gast Gearmotors are instantlyreversible through easy valving in the air line.
• More configurations.That makes it easier for our product to work in your product.Our gearmotors are available in four mounting configurations.
• More life.Unlike electric-powered gearmotors, there’s no chance of burn-out witha Gast Gearmotor. They can be stalled indefinitely with no heat buildup.They’re non-electrical sparking, too, which makes them ideal for usein potentially explosive environments – places where you couldn’t evenconsider electricity.
Get the right gearmotorwith all the right options.
A. BearingsBall bearings used on input shaft; tapered roller bearingsused on output shaft.
B. CaseFine close-grain cast iron; crankcase sealed; duplex-milled forparallelism of mounting surfaces.
C. Worm8620 alloy steel thread rolled to give uninterrupted grain pattern;carburized and hardened after rolling; high-burnish contact surfacefrom rolling reduces friction coefficient for less heat generation,lower power losses. In large sizes, worms are cut, hardened, andground to a good micro-finish, providing the ultimate in efficiencyand torque capacity.
D. Worm GearForged bronze; geometry and high helix angle give maximum beamstrength, high efficiency.
E. Cap ScrewHigh-strength fasteners with corresponding torque specificationsprevent loosening or breaking.
F. SealsDouble-dipped and spring-loaded for leak proofing; tested to ensurecompatibility with lubricant.
Referenced: spurgear reducers only
Recommended Oil for GearboxSince contamination and oxidation of the lubricating oildoes occur, we recommend changing oil every six monthsor 2500 hours, whichever occurs first, under Class I Service.If service is more severe, oil changes should be mademore frequently.
To assist in selection of proper lubricant, we have listednames by company.
50°F to 125°F (10°C to 52°C)Ambient Temperature
MANUFACTURER AGMA Compound No. 8
Amoco American Cyl. Oil 680
Cities Service Oil Co. Citgo Cyl. Oil 680-7
Gulf Oil Corporation Senate 680
Mobil Oil Company Extra HECLA, Super C.O. orMobil Gear 680
Kendall Kendco 206 Comp.
Texaco Incorporated Honor Cyl. Oil 680 or Meropa 680
Shell Oil Company Valvata Oil J-680 or Omala 680
Unocal Steaval C-200
WARNING: Gast Air-Powered Gearmotors are not self-locking.In applications where a break is required for safety in case of airpressure failure, contact your distributor.
21
Air-Powered Gearmotors1AM and 1UP Series, 15:1 reduction, 10 – 95 lbs. in. (1 – 11 Nm) torque at 40 rpm (minimum speed reduction)
MODEL
1AM-NRV-56-GR11(4 Vanes, Reversible)
1AM-NRV-60-GR11(8 Vanes, Reversible)
Net wt. 5 lbs. (2,3 kg)
FEATURES• 15:1 gear reducer• Face mounting• Horizontal or shaft
Max. allowable end thrustwith 0 overhung load is 100 lbs. (45,0kg). Max. overhung load with 0 endthrust ranges from 100 lbs. (45,0 kg) at333 rpm to 200 lbs. (90,0 kg) at 33,3 rpm.Max. recommended pressuresto 80 psi (5,6 bar).
0.31 DEEP #10-32 THD. (3)7,9
2.9374,4
30°
7.31185,8
3.0076,2
1.3835,1
1.5038,1
1.0025,4
4.00101,6
OPTIONALAG 586 FOOT
1/8 NPT PIPE (2)
0.276,9
0.42 FLAT10,70.50 DIA.12,7
2.00 DIA. BOLT50,8 CIRCLE
0.31 DEEP #10-32 THD. (3)7,9
2.9374,4
30°
6.88174,8
3.0076,2
1.3835,1
1.5038,1
1.0025,4
3.7896,0
OPTIONALAG 586 FOOT
1/8 NPT PIPE (2)
0.276,9
0.42 FLAT10,70.50 DIA.12,7
2.00 DIA. BOLT50,8 CIRCLE
75
60
45
30
15
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300 350
TORQ
UE L
B. IN
.
10
8
6
4
2
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300 350
TORQ
UE (N
m)
Torque vs. Speed
100 psi
40 psi
20 psi
60 psi
80 psi 7,0 bar
2,8 bar
1,4 bar
4,2 bar
5,6 bar
.35
.30
.25
.20
.15
.10
.05
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300 350
HORS
EPOW
ER
0,30
0,25
0,20
0,15
0,10
0,05
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300 350
KILO
WAT
T
Output Power vs. Speed
100 psi
40 psi
20 psi
60 psi
80 psi
1,4 bar
2,8 bar
5,6 bar
4,2 bar
7,0 bar
25
20
15
10
5
0
SPEED – RPM (OUTPUT)0 100 200 300 400
CFM
(FRE
E AI
R) C
ONS
UMPT
ION 10
8
6
4
2
0
SPEED – RPM (OUTPUT)0 100 200 300 400
FREE
AIR
CO
NSUM
PTIO
N (l/
s)
36
30
24
18
12
6
0
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
40 psi
20 psi
60 psi2,8 bar
1,4 bar
4,2 bar5,6 bar
80 psi
100
80
60
40
20
0
SPEED – RPM (OUTPUT)0 100 200 300 400
TORQ
UE L
B. IN
.
12
10
8
6
4
2
0
SPEED – RPM (OUTPUT)0 100 200 300 400
TORQ
UE (N
m)
Torque vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar
.35
.30
.25
.20
.15
.10
.05
0
SPEED – RPM (OUTPUT)0 100 200 300 400
HORS
EPOW
ER
0,30
0,25
0,20
0,15
0,10
0,05
0
SPEED – RPM (OUTPUT)0 100 200 300 400
KILO
WAT
T
Output Power vs. Speed
40 psi
20 psi
60 psi
80 psi
1,4 bar
2,8 bar5,6 bar
4,2 bar
Max. allowable end thrustwith 0 overhung load is 100 lbs. (45,0kg). Max. overhung load with 0 endthrust from 100 lbs. (45,0 kg) at 333 rpmto 200 lbs. (90,0 kg) at 33,3 rpm.
25
20
15
10
5
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300 350
CFM
(FRE
E AI
R) C
ONS
UMPT
ION 10
8
6
4
2
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300 350
FREE
AIR
CO
NSUM
PTIO
N (l/
s)
36
30
24
18
12
6
0
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
100 psi
40 psi
20 psi
60 psi2,8 bar
1,4 bar
4,2 bar
5,6 bar
80 psi
7,0 bar
inches / mm
inches / mm
22
Air-Powered Gearmotors4AM Series, 10 and 15:1 reduction, 100 – 630 lbs. in. (11 – 72 Nm) torque at 30 rpm (minimum speed reduction)
MODEL
4AM-RV-75-GR20(4 Vanes, Reversible)
Net wt. 28 lbs. (12,6 kg)
FEATURES• 10:1 gear reducer• Face, foot mounting• Horizontal or shaft down operation• Muffler AL445 (not shown)
Max. allowable end thrust with 0 overhung loadranges from 250 lbs. (112,5 kg) at 200 rpm to 800lbs. (360,0 kg) at 20 rpm. Max. overhung loadwith 0 end thrust ranges from 200 lbs. (90,0 kg)at 200 rpm to 600 lbs. (270,0 kg) at 20 rpm. Max.recommended pressures to 80 psi (5,6 bar) .
1.7544,50.50
12,7
PORT SIZE1/4 PIPE
OIL FILLER HLS.
0.256,4
11.56 APPROX.293,6
4.09103,89
6.13155,7
0.25 -20 UNC-2B 0.44 DEEP (4) HLS6,4 11,2ø
0.99970.999025,39225,375
2.2557,2
2.6366,8
4.75120,7
2.6366,8 5.25
133,4
6.63168,4
0.25050.24876,3636,317
KEYWAY
3.2513.24982,5882,52
DIA.
0.34 HOLE (4)8,6
2.50 DIA. B.C.63,5
6.13155,7
Max. allowable end thrust with 0 overhung loadranges from 200 lbs. (90,0 kg) at 300 rpm to 800lbs. (360,0 kg) at 30 rpm. Max. overhung loadwith 0 end thrust ranges from 200 lbs. (90,0 kg)at 300 rpm to 600 lbs. (270,0 kg) at 30 rpm. Max.recommended pressures to 80 psi (5,6 bar) .
60
50
40
30
20
10
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300
CFM
(FRE
E AI
R) C
ONS
UMPT
ION 30
24
18
12
6
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300
FREE
AIR
CO
NSUM
PTIO
N (l/
s)
10896847260483624120
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
40 psi
20 psi
60 psi
2,8 bar
1,4 bar
5,6 bar80 psi
4,2 bar
450400350300250200150100500
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300
TORQ
UE L
B. IN
.
60
50
40
30
20
10
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300
TORQ
UE (N
m)
Torque vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300
HORS
EPOW
ER
1,0
0,8
0,6
0,4
0,2
0
SPEED – RPM (OUTPUT)0 50 100 150 200 250 300
KILO
WAT
T
Output Power vs. Speed
40 psi
20 psi
60 psi
80 psi
1,4 bar
2,8 bar
5,6 bar
4,2 bar
60
50
40
30
20
10
0
SPEED – RPM (OUTPUT)0 50 100 150 200
CFM
(FRE
E AI
R) C
ONS
UMPT
ION 30
24
18
12
6
0
SPEED – RPM (OUTPUT)0 50 100 150 200
FREE
AIR
CO
NSUM
PTIO
N (l/
s)
10896847260483624120
FREE AIR CONSUM
PTION (m
3/h)
Air Consumption vs. Speed
40 psi
20 psi
60 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar80 psi
700
600
500
400
300
200
100
0
SPEED – RPM (OUTPUT)0 50 100 150 200
TORQ
UE L
B. IN
.
80
60
40
20
0
SPEED – RPM (OUTPUT)0 50 100 150 200
TORQ
UE (N
m)
Torque vs. Speed
40 psi
20 psi
60 psi
80 psi
2,8 bar
1,4 bar
4,2 bar
5,6 bar
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
SPEED – RPM (OUTPUT)0 50 100 150 200
HORS
EPOW
ER
1,0
0,8
0,6
0,4
0,2
0
SPEED – RPM (OUTPUT)0 50 100 150 200
KILO
WAT
T
Output Power vs. Speed
40 psi
20 psi
60 psi
80 psi
1,4 bar
2,8 bar
5,6 bar
4,2 bar
inches / mm
inches / mm
23
MODEL
4AM-70C-CB20(8 Vanes, Reversible)
Net wt. for standard configuration60 lbs. (27,0 kg)
FEATURES• 20:1 gear reducer• Base mounting• Optional mountings and shaft
Max. allowable end thrust with 0 overhung load is 2259 lbs. (1016,6kg) at 30 rpm to 1335 lbs. (600,8 kg) at 150 rpm. Max. overhung loadon output shaft with 0 end thrust 1601 lbs. (720,4 kg).
1/4 NPT PIPE (2)
1.2531,75
6.50165,1
OPPOSITESHAFT
LOCATION*
8.88225,6
2.5063,5
8.00203,2
1.6942,9
14.06357,1
0.53 DIA. THRU (4)13,53.1981,0
14.00355,6
4.56115,8
11.44290,6 2.06
52,3
8.81223,7
8.00203,2
0.7519,1
9.25234,9
6.38162,1
4.00101,6
5.63143,0
5.63143,0
7.44189,0
8.19208,0 3.69
93,7
2.6366,7
2.9474,7
0.38 -16 TAP (4) HOLES9,7 TOP & BOTTOM
2.5063,5
3.3885,9
2.6366,8
5.25133,4
0.25 X 0.13 KEYWAY6,4 3,3
1/4 NPT PIPE (2)
11.25285,8
OPPOSITESHAFT
LOCATION*
5.75146,1
1.2531,8
14.00355,6
0.53 DIA. THRU (4)13,5
11.44290,64.56
115,8 2.0652,3
8.56217,4
7.13181,1
5.56141,2
8.81223,8 2.50
63,5
3.0076,210.13
257,3
0.7519,1
6.13155,7
2.5063,5
5.63143,0
5.63143,0
2.6366,8
1.7544,5
0.25 X 0.13 KEYWAY6,4 3,3
5.63143,0
5.63143,0
1/4 NPT PIPE (2)
11.75298,5
OPPOSITESHAFT
LOCATION*
3.1379,5
2.6366,8
0.53 DIA. THRU (4)13,5
2.5063,5
8.38212,9
11.69296,9
14.32363,7
2.0652,3
3.0076,210.50
266,7
0.7519,16.31
160,3
2.5063,5
0.25 X 0.13 KEYWAY6,4 3,3
4.44112,8
4.81122,2
1.2531,75
“B” Mounting (photo)4AM-70C-CB20 / *4AM-70C-CF20
(standard shaft) (opposite shaft)
“C” Mounting4AM-70C-CC20 / *4AM-70C-CG20
(standard shaft) (opposite shaft)
“D” Mounting4AM-70C-CD20 / *4AM-70C-CH20
(standard shaft) (opposite shaft)
inches / mm
inches / mm
inches / mm
24
MODEL
4AM-70C-CB40(8 Vanes, Reversible)
Net wt. for standard configuration60 lbs. (27,0 kg)
FEATURES• 40:1 gear reducer• Base mounting• Optional mounting and shaft
Max. allowable end thrust with 0 overhung load is 3049 lbs.(1372,1 kg) at 15 rpm to 1823 lbs. (820,4 kg) at 75 rpm. Max.overhung load on output shaft with0 end thrust 1601 lbs. (720,5 kg).
Max. allowable end thrust with 0 overhung load is3545 lbs. (1595,3 kg) at 10 rpm to 2134 lbs. (960,3 kg)at 50 rpm. Max. overhung load on output shaft with 0end thrust 1601 lbs. (720,5 kg).
Max. allowable end thrust with 0 overhung load is 1640lbs. (738,0 kg) at 60 rpm to 923 lbs. (415,4 kg) at 300rpm. Max. overhung load on output shaft with 0 endthrust 1601 lbs. (720,5 kg).
Max. allowable end thrust with 0 overhung load is 3552lbs. (1598,4 kg) at 30 rpm to 2154 lbs. (969,3 kg) at 150rpm. Max. overhung load on output shaft with 0 endthrust 2857 lbs. (1285,7 kg).
Max. allowable end thrust with 0 overhung load is 3552lbs. (1598,4 kg) at 30 rpm to 2154 lbs. (969,3 kg) at 75rpm. Max. overhung load on output shaft with 0 endthrust 2857 lbs. (1285,7 kg).
Max. allowable end thrust with 0 overhung load is 3552lbs. (1598,4 kg) at 30 rpm to 2154 lbs. (969,3 kg) at 125rpm. Max. overhung load on output shaft with 0 endthrust 2857 lbs. (1285,7 kg).
Max. allowable end thrust with 0overhung load is 3552 lbs. (1598,4 kg) at30 rpm to 2154 lbs. (969,3 kg) at 100 rpm.Max. overhung load on output shaft with0 end thrust 2857 lbs. (1285,7 kg).
26.48672,6
1-1/4 NPT PIPE (2)
1.87501.8745DIA.47,62547,612
9.75247,7
10.86275,8
4.25108,0
11.12282,4
2.5063,5
0.41 DIA. THRU (4)10,44.25108,0
12.63312,4
6.77172,0
1.0025,4
13.25336,6
8.50215,9
5.56141,2
8.12206,2
8.12206,2
0.66 DIA. THRU (4)16,75.00127,0
3.8196,8
7.62193,5
0.50 X 0.25 KEYWAY12,7 6,4 OPPOSITESHAFT
LOCATION*
8.21208,52.12
53,83.0677,4
3.7595,3
1.3835,12.75
69,9
0.44 -14 TAP (4) HOLES11,2 (TYP. 8)
4.44115,6
4.25108,0
1.88 DIA.47,8
8.69220,7 8.50
215,9
1.88 DIA.47,8
0.69 DIA. THRU (4)17,5
26.48672,6 20.86
529,8
5.88149,4
6.12155,4
4.25108,0
8.12206,2
8.62218,9
OPPOSITESHAFT
LOCATION*
8.21208,5
0.50 X 0.25 KEYWAY12,7 6,4
8.12206,2
1-1/4 NPT PIPE (2)
14.88378,016.25
412,8
3.2883,3
0.8120,6
4.44112,8
5.00127,0
0.5019,7
“B” Mounting (photo)16AM-13-HB20 / *16AM-13-HF20
(standard shaft) (opposite shaft)
“C” Mounting16AM-13-HC20 / *16AM-13-HG20
(standard shaft) (opposite shaft)
inches / mm
inches / mm
31
A
B
C
Mist lubricators provideuniform lubrication for thetraditional lubricated style airmotor. This results inreduced friction, extendingthe life of moving parts.
Filters • Regulators • Lubricators
A
B
C
A
B
C
FILTERS
Gast Part Port Flow* Used Dimensions - in. (mm) Number Size SCFM With A B C
Plastic version offers enhanced sound reduction because of patented acoustic material technology.Metal version offers sound reduction with smaller envelope dimensions.* Not included with 16AM series, but is recommended.
Metal Style(AF350 / AG601)
FOOT ASSEMBLIES FOR 1AM AND 1UP AIR MOTORS AND GEARMOTORS
FAST AND SIMPLE INSTALLATIONGAST now offers two foot assemblies in kit form:AG585 for 1AM and 1UP Air Motors, kit includes foot,three mounting screws and instruction sheet.AG586 for 1AM and 1UP Gearmotors, kit includes footand three mounting screws.