Gast 1UP-NRV-11-GR11 Reversible Air Motor 0.32 Hp

Product Description

The GAST 1UP-NRV-11-GR11 is a reversible, face-mount air-actuated motor designed for industrial and commercial pneumatic drive applications. Rated at 0.32 horsepower, it delivers up to 400 RPM at maximum speed with a minimum operating speed of 30 RPM, making it well suited for variable-speed pneumatic systems. The integrated 15:1 gear ratio provides mechanical torque multiplication up to 95 inch-pounds, allowing the motor to drive loads that require steady, controlled rotational force. The flat-keyed, 1/2-inch diameter shaft accepts standard drive components. Licensed HVAC, mechanical, and industrial technicians install this unit in compressed-air-powered equipment, actuator assemblies, and process machinery.

This motor fits pneumatic drive applications where a reversible output shaft, face-mount configuration, and gear-reduced torque output are required. The air-actuated design eliminates electrical ignition risk in environments where spark-free operation is preferred. With a maximum working pressure of 80 psi and an 8-vane rotor, the unit delivers consistent torque across its operating speed range. It is a direct-replacement motor for equipment originally spec'd for a GAST face-mount gearmotor of this displacement class.

Key Features

• Reversible shaft rotation for bidirectional drive applications
• 15:1 gear ratio with 95 inch-pounds of output torque
• Speed range of 30 to 400 RPM for variable-speed pneumatic control
• Face-mount style for direct bolt-up to gearboxes or driven equipment
• Flat shaft type, 1/2-inch diameter, 1.38-inch length for standard coupling fitment
• 8-vane rotor design rated to 80 psi maximum working pressure

Compatibility

Designed as an OEM-style replacement for face-mount reversible air-actuated gearmotors in industrial and commercial pneumatic drive assemblies requiring a 15:1 gear ratio and 0.32 HP output class.

Installation Notes

Installation is typically performed by licensed mechanical or industrial technicians. Shut off and bleed all compressed air supply lines before removing or installing the motor. Verify that supply air pressure does not exceed 80 psi and that the air supply is clean and dry, as contaminated air accelerates vane wear. Confirm shaft coupling alignment before applying air pressure to avoid side-loading the output shaft.