Gast 1UP-NRV-4-GR11 Gear Motor

Description

The 1UP-NRV-4-GR11 is a “workhorse” for small-scale automation. Because it is powered entirely by compressed air, it is ATEX and CE certified for hazardous locations (Group II, Cat 2), where electric motors would pose a spark risk.

The motor features a Face Mount and a 1/2″ keyed shaft, allowing it to be easily integrated 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 lab environments.

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

15:1 Gear Reduction: Converts high-speed internal rotation into a stable, high-torque output with a maximum no-load speed of 400 RPM.
Compact Footprint: Measuring approximately 7-5/16″ in length, it fits into tight machine frames where larger gear motors cannot.
Variable Speed: The output speed can be precisely adjusted from 50 to 400 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.

Specifications

Feature	Specification
Maximum Power	0.31 hp (0.23 kW)
Gear Ratio	15:1
Max Speed	400 RPM
Max Torque	95 lb-in (10.7 Nm)
Starting Torque @ 80 psi	75 lb-in (8.5 Nm)
Max Air Consumption	21 CFM ( $35.7 m^3/h$ )
Port Size	1/8″ NPT
Shaft Diameter	0.500 in (1/2″)
Net Weight	3.1 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.
Tensioning Systems: Maintaining constant pull on film or wire lines where the motor may frequently stall.
Precision Feeders: Powering small transport systems or dosing equipment requiring frequent starts and stops.
OEM Machinery: Integrated into automated industrial tools or robotic arms requiring a lightweight, cool-running motor.