Gast 4AM-NRV-22B Reversible Air Motor 1.5 Hp

Product Description

The GAST 4AM-NRV-22B is a 1.5 horsepower reversible face-mount air motor designed for industrial and trade applications where pneumatic power is required. Driven entirely by compressed air, it produces up to 56 inch-pounds of torque and operates across a speed range of 300 to 3,000 RPM. The motor features a keyed shaft measuring 0.5 inches in diameter and 1.12 inches in length, with an overall body length of 5.81 inches. Reversible shaft rotation is controlled by redirecting airflow, making direction changes straightforward without additional components. Licensed trades and industrial maintenance technicians are the primary installers of this unit.

The 4AM-NRV-22B is suited for applications where electric motors present a hazard or are impractical, including wet environments, explosive atmospheres, and continuous-duty pneumatic drive setups. Its face-mount style allows direct attachment to equipment frames or gearbox flanges. The motor accepts a maximum working pressure of 100 psi and delivers a maximum air flow of 78 cubic feet per minute at full load. It is appropriate for use in manufacturing, processing, and industrial maintenance environments where compressed air supply is available.

Key Features

• Reversible shaft rotation via air direction change, no additional hardware required
• 1.5 HP output with torque rating of 56 inch-pounds
• Speed range of 300 to 3,000 RPM for variable-load applications
• Keyed shaft, 0.5 inches diameter by 1.12 inches length, for positive drive engagement
• Face-mount style for direct equipment or gearbox attachment
• Maximum working pressure of 100 psi with 1-3/4 inch thread size inlet

Compatibility

Designed as a face-mount pneumatic air motor replacement for industrial drive applications requiring reversible rotation, 1.5 HP output, and a keyed 0.5-inch shaft at up to 100 psi supply pressure.

Installation Notes

Installation of this air motor should be performed by a qualified industrial mechanic or pneumatic systems technician. Shut off and depressurize the compressed air supply completely before mounting or servicing the unit. Secure all air line connections at the 1-3/4 inch threaded inlet and verify system supply pressure does not exceed 100 psi during operation. Ensure the keyed shaft coupling is properly aligned and secured to prevent mechanical stress on the shaft during startup.