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Mfr. Part #: 4AM-RV-75-GR20
Ships same day with standard 2-day shipping if ordered M-F before 3PM PT.
The Gast 4AM-RV-75-GR20 is a rugged, reversible rotary vane air motor equipped with a 10:1 gear reducer, designed to deliver dependable, low-speed, high-torque mechanical power using compressed air. Operating at pressures up to 80 PSI with a maximum output speed of 300 RPM, this lubricated air motor provides an alternative to electric motors for applications requiring controlled speed, increased torque, and reversible operation. Its non-electrical design and cool-running performance make it well suited for demanding industrial environments, including appropriately rated hazardous locations. Designed for durability and versatility, the 4AM-RV-75-GR20 features a 10:1 gear reduction system that reduces output speed while increasing available torque for demanding mechanical applications. The motor provides low-shock starting, stopping, and reversing capabilities, with speed and torque controlled by regulating the compressed air supply. Its lubricated rotary vane design, keyed 1-inch output shaft, face or foot mounting options, and 1/4-inch NPT air connections allow for integration into industrial machinery and OEM equipment. The Gast 4AM-RV-75-GR20 is suitable for a variety of industrial applications, including conveyor drives, mixing equipment, pump drives, packaging machinery, material handling systems, and automated production equipment. Its compact construction, reversible operation, and high-torque performance make it a practical solution for applications requiring dependable mechanical power at reduced operating speeds. The motor is designed for operation with clean, dry, filtered, lubricated compressed air. TECO Technology is an authorized Gast distributor and repair facility, providing genuine Gast products, replacement parts, repair kits, and technical support. Our experienced team can assist with product selection, troubleshooting, maintenance, and repair services to help keep your equipment operating reliably.
The Gast 4AM-RV-75-GR20 is a reversible, lubricated air motor equipped with a 10:1 gear reducer, delivering variable speed and high torque for demanding applications. Its rugged design and non-electrical operation make it suitable for hazardous environments and extreme temperatures.
Key Features:
- Reversible rotation for versatile operation
- Delivers up to 1.7 hp (1.27 kW) power output
- Maximum air consumption of 30 cfm (50.97 m³/h)
- Maximum operating pressure of 5.5 bar (79.77 psi)
- Maximum speed of 300 rpm
- Maximum torque of 640 in-lb (72.32 N·m)
- Starting torque at 80 psi: 300 in-lb (33.9 N·m)
- Torque at maximum speed: 274 in-lb (30.96 N·m)
- 4 vanes for smooth operation
- Keyed 1 in (25.4 mm) output shaft
- Mounting options: Face or foot
- 1/4" NPT air inlet port
- CE and ATEX certified for safety
- Weight: 28 lbs (12.7 kg)
- Includes 1-year warranty
Common Applications:
- Conveyor drives
- Mixing equipment
- Pump drives
- Food packaging machinery
- Pharmaceutical packaging systems
- Hoists and winches
- Hose reels
- Fiberglass choppers
- Tension devices
- Turntables and tire/wheel balancers
| SPECIFICATIONS | ||
| 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 ) | |
| Mount | FACE/FOOT | |
| 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 @ 80 psi | 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 ) | |




ID #: 4811