Gast 2AM-ACC-91 Air Motor

Description

The 2AM-ACC-91 utilizes a 4-vane configuration, which is the industrial standard for balanced performance, high-speed stability, and efficient air consumption. Because it is powered entirely by compressed air, it is inherently ATEX and CE certified for use in explosive atmospheres (Group II, Cat 2), as it cannot produce an electrical spark.

A major technical advantage of this motor is its thermal resilience. As compressed air expands through the motor to create motion, it naturally absorbs heat, keeping the cast-iron housing cool even under heavy, continuous use. This allows it to operate in ambient temperatures as high as 121°C (250°F).

Brand

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

Standard Hub Mount: Features a precision-machined hub and a 1/2″ (0.500 in) keyed shaft, allowing for direct mounting to custom brackets or equipment faces.
4-Vane Configuration: Optimized for high-speed operation and reliable start-ups across its entire pressure range.
Variable Speed & Torque: Speed can be precision-controlled from 300 to 3,000 RPM by simply adjusting the air pressure or flow volume with a regulator.
Explosion Proof: Non-electrical design is safe for refineries, chemical plants, and areas with combustible dust.
Instantly Reversible: A 4-way control valve allows the motor to switch rotation directions instantly, even under full load.
Stall-Safe: Unlike electric motors, the 2AM-ACC-91 can be stalled indefinitely without damage, overheating, or risk of fire.

Specifications

Feature	Specification
Maximum Power	0.5 hp (0.37 kW)
Maximum Speed	3,000 RPM
Max Air Consumption	30 CFM ( $51 m^3/h$ )
Maximum Torque	12 lb-in (1.36 Nm)
Starting Torque @ 80 psi	9 lb-in (1.0 Nm)
Port Size	1/8″ NPT
Shaft Diameter	0.500 in (1/2″)
Net Weight	5 lbs (2.3 kg)

Applications

Laboratory Mixers: Powering small-scale stirrers and agitators for chemicals or samples.
Precision Feeders: Operating small transport systems or dosing equipment requiring frequent starts and stops.
Medical Equipment: Used in specialized devices where pneumatic safety and compact size are required.
OEM Machinery: Integrated into automated industrial tools where a spark-free hub-mount motor is necessary.
High-Heat Environments: Operating near small furnaces or industrial kilns where electric motor components would melt.