57J18112-435 High Torque NEMA23 Stepper Motor - 3 N·m

A High Torque NEMA23 Stepper Motor with 3 N·m Reserve

The 57J18112-435 is a High Torque NEMA23 Stepper Motor, the longest 57 mm-frame motor in this set at 112 mm, rated 3.0 N·m at 3.5 A with an 8 mm shaft. It is a 2-phase stepper suited to motion control axes that need the upper torque range of the NEMA23 frame.

High Torque in the NEMA23 Class

Three N·m approaches the practical ceiling for NEMA23 open-loop steppers, giving the motor headroom for desktop CNC axis drives, belt-driven gantries and positioning mechanisms that occasionally experience load spikes without losing steps.

Engineering Specification

• Frame: NEMA23 (57 mm)
• Body length: 112 mm
• Phase current: 3.5 A
• Holding torque: 3.0 N·m
• Shaft: 8 mm
• Type: 2-phase, open-loop

Applications: Desktop CNC and Robotics

In desktop CNC, the motor drives the X/Y axes with torque to cut or engrave without step loss at modest feed rates. In robotics it provides repeatable positioning for light joints and end-effectors where servo cost is unnecessary. Food-processing equipment also uses the frame where higher NEMA23 torque must be retained in a compact machine footprint.

Motion Control Behavior

The high holding torque resists static load drift, while controlled stepping supports consistent feed for machining and repeatable pick-and-place motion. With microstepping enabled, the effective resolution improves further, which helps surface finish on desktop CNC work and smoothness on robot motion.

Why 3 N·m Matters in a NEMA23

Many NEMA23 axes run between 1.5 and 2 N·m, so 3 N·m leaves real margin for fixture weight, belt tension and occasional load spikes. That margin reduces the chance of missed steps on acceleration ramps and protects positioning accuracy when the axis encounters a harder spot in its travel.

Thermal and Mechanical Notes

Operate with a driver supplying rated current and adequate cooling to sustain torque. The 8 mm shaft and standard NEMA23 mounting simplify integration. Confirm the torque-speed curve at the operating feed rate, since long-body steppers generate more heat at high duty. Lyenwsin supplies this motor with matched drivers for CNC and robotics builders.