Gast 6AM-NRV-7A Air Motor

Description

The 6AM-NRV-7A is a 4-vane model, 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.

One of its most significant advantages is its ability to operate in ambient temperatures as high as 121°C (250°F). As the compressed air expands through the motor to create motion, it naturally absorbs heat, keeping the cast-iron housing cool even under heavy, continuous use.

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

Face Mount Design: Features a standard bolt circle and a 5/8″ (0.625 in) keyed shaft, allowing for direct mounting to bulkheads, agitator stands, or custom machine frames.
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.
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 6AM-NRV-7A can be stalled indefinitely without damage, overheating, or risk of fire.

Specifications

Feature	Specification
Maximum Power	4.0 hp (3.0 kW)
Maximum Speed	3,000 RPM
Max Air Consumption	125 CFM ( $212 m^3/h$ )
Maximum Torque	95 lb-in (10.7 Nm)
Starting Torque @ 80 psi	73 lb-in (8.2 Nm)
Max Operating Pressure	100 psi (7 bar)
Port Size	1/2″ NPT
Shaft Diameter	0.625 in (5/8″)
Net Weight	21 lbs (9.5 kg)

Applications

Custom Agitators: Face-mounting allows the motor to be bolted directly to the top of chemical or paint mixing tanks.
Pumping Systems: Driving centrifugal or gear pumps in remote locations or hazardous processing zones.
Conveyor Drives: Providing variable speed transport for mid-sized loads in high-heat or wash-down environments.
Hazardous Area Winches: Utilizing high starting torque for pulling or lifting in mines and on oil rigs.
OEM Machinery: Integrated into specialized industrial equipment where a compact, spark-free motor is required.