50 N·m 3-Phase Stepper Motor with NEMA52 Frame

The 130J12280-368 is a 50 N·m 3-Phase Stepper Motor built on a NEMA52 frame with a 280 mm body length, designed for machines that need substantial holding torque in open-loop positioning. It delivers a 50 N·m holding torque at a 6.8 A phase current through a 19 mm output shaft, making it suitable for heavy load applications such as large CNC axes and rotary tables.

Frame, Torque, and Holding Behaviour

A NEMA52 frame houses the large rotor needed to sustain a 50 N·m holding torque. Under static holding the motor resists external torque up to that rated figure; in motion, available torque falls with speed, so the application must keep its running torque duty within the motor’s speed-torque curve. The long 280 mm stack provides the magnetic volume for this torque class.

Precision and Vibration

High-precision stators and rotors with small air gaps yield a consistent step-to-step moment profile, which eases low-vibration operation and helps keep positioning predictable in open-loop control. Because there is no encoder-derived feedback by default, the machine’s step resolution and controller remain the authority on commanded position.

Electrical and Mechanical Outline

A 6.8 A phase current at the winding rating supplies the field strength for full torque. The 19 mm shaft provides a rigid coupling point suited to direct connection or a belt/gear drive. Lower motor heating and reduced vibration are design targets of the high-quality material construction, supporting continuous duty within its thermal budget.

Key Specifications

• Phase count: 3-phase
• Frame size: NEMA52
• Body length: 280 mm
• Phase current: 6.8 A
• Holding torque: 50 N·m
• Shaft size: 19 mm
• Construction: high-quality materials, high precision, low heating, low vibration

Typical Applications

With its high holding torque, the motor suits compact CNC equipment, packaging machinery, factory automation, compact robotic mechanisms, textile and printing machinery, and food processing where larger loads must be positioned repeatably by open-loop steps at relatively low speed. Heavy CNC axes and rotary indexing tables benefit from the reserve torque this frame size provides.

Selection Considerations

Confirm the speed-torque requirement of your axis against the motor’s envelope before finalizing the drive. Pair the motor with a 3-phase stepper drive rated for at least 6.8 A per phase. Lyenwsin provides application support to help you size the motor and drive combination for heavy-load duty.