Gast 4AM-RV-75-GR20 Air Motor Reversible Lubricated 1.7 HP


The compact and portable 4AM series offers air motor operating speed and power output that can be adjusted to meet the precise needs of your application. Their air throttling and pressure control are not only cost-effective over electric motor controls, but they can also be stalled or overloaded for long periods without damaging the motor. In addition, these Gast air motors are cool-running and have no electrical spark, which makes them ideal for use in hazardous locations.

Replacement for 4AM-RV-127-GR20

The 4AM-RV-75-GR20 air motor features

  • an adjustable operating speed up to 300 RPM
  • power output up to 1.7 HP
  • non-electrical device
  • the ability to stall for long periods of time without damaging the motor
  • the ability to operate in extreme temperature locations (0–250 °F)

Equipment comes with a 1 year OEM warranty.

FRL Combo: MP10210

Filter: MP01406

Regulator: MP00270

Lubricator: MP00336




To rebuild or repair this Air Motor, please use the Gast Repair Kit: K205.

9 in stock

SKU: 4AM-RV-75-GR20 Category: Tags: , , , , , Brand:
Product Specification
Key Type: M30-KEYSQ
Max Air Consumption: 30 cfm ( 50.97 m3h )
Max Power: 1.7 hp ( 1.27 kW )
Max Pressure: 5.5 bar ( 79.77 psi )
Max Sound Level: 87 dB(A)
Max Speed: 300 rpm
Max Torque: 640 in-lb ( 72.32 N m )
Output Shaft Type: Keyed
Port Size and Type: 1/4″ NPT
Regulatory Approval: CE, ATEX
Rotation: Reversible
Shaft Size: 1 in ( 25.4 mm )
Stainless Steel: NO
Starting Torque @ 80psi: 300 in-lb ( 33.9 N m )
Torque Max Speed: 274 in-lb ( 30.96 N m )
Vanes: 4
Weight: 28 lbs ( 12.7 kg )
Additional Information
Weight 28 lbs
Dimensions 12 × 7 × 7 in







This item has a 1-year manufacturer's warranty.

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