NEMA 42 Closed Loop Stepper Motor - 20 N·m Holding Torque

NEMA 42 Closed Loop Stepper Motor with 20 N·m Holding Torque

The 110J12190EC-1000 is a NEMA 42 Closed Loop Stepper Motor in a 190 mm body with 20 N·m holding torque and 1,000 P/R feedback, placing it at the high-torque end of the NEMA 42 range. It draws 6.8 A per phase on a 19 mm shaft, a size class normally reserved for machines where load margin is the primary design constraint.

closed loop Feedback and Missed-Step Control

An integrated 1,000 P/R encoder closes the position loop. Where an open-loop stepper can lose steps when the load exceeds torque capacity, the drive compares commanded and actual rotor position continuously, so transient overloads are corrected rather than accumulated. The benefit is most visible in applications with variable friction or rapid acceleration profiles, where tuning an open-loop system becomes a compromise between stability and throughput.

Thermal and Torque Behavior

At 6.8 A phase current the motor develops its rated 20 N·m holding torque. Operating temperature is a function of duty cycle, ambient conditions, and mounting surface; adequate air circulation or a cooling plate is recommended when the axis runs at high duty for extended periods.

Specifications

• Motor type: 3-phase hybrid stepper, closed loop
• Frame size: NEMA 42
• Body length: 190 mm
• Phase current: 6.8 A
• Holding torque: 20 N·m
• Shaft diameter: 19 mm
• Feedback: integrated 1,000 P/R encoder

Application Guidance

Typical installations include CNC machine tool axes, rotary tables, and automated handling mechanisms where the combination of holding torque and closed loop positioning avoids re-homing after a stall. It is equally suited to packaging and printing lines that run continuous production schedules. Heavy-load CNC axis feeds and rotary table indexing stay accurate cycle after cycle. Lyenwsin provides this NEMA 42 Closed Loop Stepper Motor with compatible drives and integration support.

Setup Notes

Set the drive current to match the 6.8 A winding and complete the encoder phase alignment during commissioning to get the smoothest low-speed motion. If the axis experiences frequent torque spikes, review the acceleration ramp rather than raising current, since the closed loop will correct position anyway. For very high duty cycles, consider mounting on a machined plate to aid heat transfer.