57J18100-450 2.8 N·m NEMA23 Stepper Motor - 100 mm

A High-Current 2.8 N·m NEMA23 Stepper Motor for CNC

The 57J18100-450 is a 2.8 N·m NEMA23 Stepper Motor, a 2-phase 57 mm-frame motor, 100 mm long, with 2.8 N·m at a 5.0 A phase current and an 8 mm shaft. The higher current supports responsive torque delivery across the motion-control band.

High-Current NEMA23 Performance

At 5.0 A the motor holds strong torque for desktop CNC and robotics axes that need to respond cleanly to rapid step commands. The 2.8 N·m figure covers X/Y drives and rotary positioning within the 57 mm frame.

Data

• Frame: NEMA23 (57 mm)
• Body length: 100 mm
• Phase current: 5.0 A
• Holding torque: 2.8 N·m
• Shaft: 8 mm
• Type: 2-phase, open-loop

Desktop CNC and Motion Control

For desktop CNC, the motor provides steady cutting torque while preventing resonance-induced step loss when driven with microstepping. Motion control applications benefit from its torque reserve during acceleration, and robotics cells use it for repeatable positioning of lightweight joints and turntables. The 5.0 A rating gives the drive a wide operating window, so the axis can accelerate briskly without tripping the driver current limit.

Heat Management

The higher current winding requires adequate driver current and surface cooling to avoid thermal torque derating in continuous use. Keep the mounting surface clear of insulating panels and leave space around the motor frame so heat can escape naturally.

Resonance and Microstepping

Open-loop steppers can show resonance near certain step rates, so microstepping and a smooth acceleration profile help keep motion uniform. The 100 mm body provides a good balance of torque and stiffness for the frame, making resonance easier to manage than on shorter, lower-torque NEMA23 motors.

Integration

Standard NEMA23 mount and 8 mm shaft accept common couplings. Verify the driver current is set correctly against the 5.0 A rating, and confirm the supply voltage meets the target speed under load. For multi-axis desktop machines, plan cabinet ventilation around the motor heat. Lyenwsin offers the motor with matching drives and setup guidance.