AC Torque Motor

OUBANG AC torque motors (3–40 W) are compact constant-torque motors engineered for film tension control, winding and unwinding systems, feeders, and small automation lines that require steady torque at low speed or even at stall. Designed for low-speed, stall-duty performance, they deliver reliable torque output and smooth motion under continuous operation. Standard frame sizes from 60×60 mm to 100×100 mm are available in single-phase 110 / 220 V and three-phase 220 / 380 V versions, compatible with inline, right-angle, or worm gearboxes for flexible machine integration.

For variable-speed automation applications, please visit our AC Speed Control Motor range.

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AC Torque Motor
AC Torque Motor 3W–40W | High Starting Torque

AC Torque Motors for Low-Speed & Stall-Duty

AC torque motors (3–40 W) are designed for low-speed and stall-duty applications. They provide constant torque at very low RPM or even at stall within rated thermal limits. Square frames 60×60–100×100 mm, available in single-phase 110/220 V or three-phase 220/380 V. Suitable for tension control, winding/unwinding, feeders, and compact automation where smooth torque output is required.

Power, Mounting & Voltages

Power: 3–40 W
Frame sizes: 60×60, 70×70, 80×80, 90×90, 100×100 mm
Voltages: single-phase 110 V / 220 V; three-phase 220 V / 380 V

Control & Duty Characteristics

Optimized for low-speed or stall-duty with stable constant torque
Adjustable torque via supply or drive settings for tension control
Quiet operation, reliable duty, and long service life for compact machines

Gearbox Compatibility

Inline / parallel-shaft: compact, balanced layout
Right-angle (hollow or solid shaft): space-saving configuration
Worm gear: high reduction ratio and smooth low-speed output

Typical Applications

Film, foil, and paper tension control, winders and unwinders, feeders, indexing rollers, light conveyors, and small automation systems requiring steady torque at low RPM.

Why Choose This Range

Constant torque performance at low speed and stall for precise tension control
Compact square frames for easy installation and space efficiency
Multiple voltage options (110 / 220 / 380 V) for global compatibility
Wide gearbox adaptability — inline, right-angle, and worm types supported
Reliable continuous operation for film, paper, packaging, and feeder automation

The OUBANG AC torque motor line ensures stable torque delivery and long service life, making it an ideal constant-torque drive solution for tension and feed control systems worldwide.

Related AC Drives

AC Reversible Motor — bidirectional drive with simple forward/reverse control
AC Brake Motor — constant torque with electromagnetic braking for hold and stop