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Gast 1AM-NRV-56-GR11 Air Motor

Gast 1AM-NRV-56-GR11 Gear Motor

A reversible, 0.34 HP (0.26 kW) rotary vane gear motor featuring a 4-vane design and a 15:1 gear reduction. It provides a maximum output speed of 350 RPM and is an intrinsically safe choice for hazardous or high-temperature environments.

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Description

The is a “workhorse” for small-scale automation and mixing. Because it is powered entirely by compressed air, it is ATEX and CE certified for use in explosive atmospheres (Zones 1 and 2), where electric motors would pose a spark risk.

The motor features a Face Mount and a 1/2″ keyed shaft, making it easy to integrate into specialized machinery. Its cool-running design allows it to operate in ambient temperatures up to 121°C (250°F), which is ideal for chemical processing or paint kitchens.

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

  • 15:1 Gear Reduction: Converts high-speed internal rotation into a stable, high-torque output with a maximum no-load speed of 350 RPM.
  • Compact and Lightweight: Weighing only 3.1 lbs (1.4 kg), it offers a high power-to-weight ratio for portable or space-constrained equipment.
  • Variable Speed: The output speed can be precisely adjusted from 0 to 350 RPM by simply regulating the air pressure or flow volume.
  • Instantly Reversible: A 4-way control valve allows the motor to switch rotation directions instantly, even under full load.
  • Explosion Proof: Non-electrical operation is safe for refineries, chemical plants, and areas with flammable vapors.
  • Stall-Safe: Can be stalled indefinitely without damage, providing built-in protection against mechanical jams or overloads.

Specifications

FeatureSpecification
Maximum Power0.34 hp (0.26 kW)
Gear Ratio15:1
Max Speed (No Load)350 RPM
Max Torque72 lb-in (8.1 Nm)
Starting Torque @ 80 psi40 lb-in (4.5 Nm)
Max Air Consumption21 CFM ($36 m^3/h$)
Port Size1/8″ NPT
Shaft Diameter0.500 in (1/2″)
Net Weight3.1 lbs (1.4 kg)

Applications

  • Laboratory Stirrers: Driving chemical mixers where precise speed control and spark-free safety are mandatory.
  • Small Pump Drives: Operating miniature metering or centrifugal pumps in hazardous processing zones.
  • Precision Feeders: Powering small transport systems or dosing equipment requiring frequent starts and stops.
  • Indexing Tables: Rotating small automated platforms that require pneumatic safety and variable speed.
  • Tensioning Systems: Maintaining constant pull on film or wire lines where the motor may frequently stall.

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