Gast 2AM-NRV-89 Air Motor

A reversible, 0.5 HP (0.37 kW) rotary vane air motor featuring a 4-vane design and a NEMA 56C flange mount. It is an intrinsically safe, cool-running power source designed to bolt directly to standard U.S. gear reducers and small pumps.

Description

The 2AM-NRV-89 utilizes a 4-vane configuration, optimized for high-speed efficiency and reliable start-ups. Because it operates entirely on compressed air, it is inherently ATEX and CE certified for hazardous locations (Group II, Cat 2), making it safe for environments where electrical sparks could cause explosions.

A standout feature of this motor is its “self-cooling” capability. As compressed air expands through the motor, it absorbs heat, allowing the unit to run in ambient temperatures up to 121°C (250°F). This makes it an excellent choice for high-heat industrial zones where electric motor insulation would fail.

Brand

GAST

GAST 

Since 1921, Gast Manufacturing, Inc. has been a leader in the design and manufacturing of quality air-moving products. We specialize in offering cost effective solutions for a wide variety of industries including industrial manufacturing, healthcare, and environmental cleanup applications.

Features

  • NEMA 56C Mounting: Features a standard C-face flange and a 5/8″ (0.625 in) keyed shaft for “drop-in” compatibility with most American gearboxes and C-face pumps.
  • 4-Vane Configuration: The industrial standard for balanced performance, providing high-speed stability and efficient air consumption.
  • Variable Speed & Torque: RPM can be precisely controlled from 300 to 3,000 RPM by simply adjusting the air pressure or flow volume.
  • Explosion Proof: Non-electrical design is safe for chemical plants, refineries, and areas with combustible dust or vapors.
  • Instantly Reversible: A 4-way control valve allows the motor to switch rotation directions instantly, even under full load.
  • Stall-Safe: Can be stalled indefinitely without damage, overheating, or the risk of electrical burnout.

Specifications

FeatureSpecification
Maximum Power0.5 hp (0.37 kW)
Maximum Speed3,000 RPM
Max Air Consumption30 CFM ($51 m^3/h$)
Maximum Torque12 lb-in (1.36 Nm)
Starting Torque @ 80 psi9 lb-in (1.0 Nm)
Port Size1/8″ NPT
Shaft Diameter0.625 in (5/8″)
Net Weight5.5 lbs (2.5 kg)

Applications

  • Small Chemical Agitators: Driving mixers in environments where flammable vapors or “wash-down” conditions are present.
  • Conveyor Systems: Powering small transport lines in high-heat or hazardous processing zones.
  • Pump Drives: Operating small centrifugal or gear pumps in refineries or chemical plants.
  • OEM Machinery: Integrated into specialized industrial equipment requiring a compact, spark-free NEMA motor.
  • Laboratory Equipment: Used in automated testing rigs where pneumatic safety and precise speed control are required.