Gast 4AM-FRV-13C Air Motor

Description

The 4AM-FRV-13C utilizes a standard 4-vane configuration, optimized for high-speed efficiency and reliable start-ups. 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 advantage of this motor is its “self-cooling” nature. As compressed air expands through the motor to create motion, it absorbs heat. This allows the 4AM-FRV-13C to operate in ambient temperatures as high as 121°C (250°F), far exceeding the limits of standard electric motor insulation.

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

Rugged Foot Mount: Features a heavy-duty integrated base with four mounting holes for secure, vibration-resistant installation on horizontal surfaces.
4-Vane Efficiency: The standard industrial configuration for high-speed operation and consistent performance across its RPM range.
Variable Speed & Torque: Speed can be precision-controlled from 300 to 3,000 RPM by simply “throttling” the air supply with a regulator or needle valve.
Explosion Proof: Non-electrical design is safe for refineries, chemical plants, and areas with combustible dust.
Instantly Reversible: A simple 4-way valve in the air line allows the motor to switch rotation directions instantly, even under full load.
Stall-Safe: Unlike an electric motor, the 4AM-FRV-13C can be stalled indefinitely without damage or risk of fire.

Specifications

Feature	Specification
Maximum Power	1.7 hp (1.27 kW)
Maximum Speed	3,000 RPM
Max Air Consumption	78 CFM ( $133 m^3/h$ )
Maximum Torque	56 lb-in (6.3 Nm)
Starting Torque @ 80 psi	42 lb-in (4.7 Nm)
Max Operating Pressure	100 psi (7 bar)
Port Size	1/4″ NPT
Shaft Diameter	0.500 in (1/2″)
Net Weight	12 lbs (5.4 kg)

Applications

Industrial Agitators: Powering mixing blades in chemical or paint tanks where flammable vapors are a concern.
Conveyor Drives: Providing variable speed transport for small-to-medium loads in high-heat or wash-down environments.
Pump Drives: Operating centrifugal or gear pumps in hazardous processing zones.
Winches and Hoists: Utilizing high starting torque for pulling or lifting in mines and on oil rigs.
Foundry Equipment: Operating near furnaces or industrial kilns where electric motor components would melt.