Nema 23 CNC Stepper Motor 425oz-in Bipolar 1.8deg 4.2A Stepping Motor for Extruder CNC 3D Printer DIY Milling Lathe Router

Single Nema 23 high-torque bipolar stepping motor with 425 oz-in torque
✔️ 425 oz-in holding torque, 4.2 A/phase, 11.81 in lead cable

This Nema 23 CNC stepper motor delivers high torque for extruders, CNC mills, 3D printers, and automation projects. It’s a solid choice for driving axes in hobby machines requiring precise, steady motion.

✅ Holding torque: 425 oz-in (3 Nm)
✅ Rated current per phase: 4.2 A
✅ Phase resistance: 0.9 ohms
✅ Inductance: 3.8 mH ±20% (1 kHz)
✅ Step angle: 1.8° (200 steps/rev)
✅ Frame size: 57 x 57 mm (2.24 x 2.24 in)
✅ Body length: 113 mm (4.45 in)
✅ Shaft diameter: 10 mm (0.39 in)
✅ Shaft length: 24 mm (0.94 in)
✅ Lead length: 300 mm (11.81 in)
✅ Weight: 1.8 kg (63.49 oz)
✅ Leads: 4, 11.81 in cable; color coding A+/A-, B+/B-
✅ Connection: Black(A+), Green(A-), Red(B+), Blue(B-)
✅ Manufacturer part: 23HE45-4204S
✅ Warning: use a constant current or chopper drive to test (not direct power)

Dimension	Metric	Inches
Frame size	57 x 57 mm	2.24 x 2.24 in
Body length	113 mm	4.45 in
Shaft diameter	10 mm	0.39 in
Shaft length	24 mm	0.94 in
Lead length	300 mm	11.81 in
Weight	1.8 kg	63.49 oz

💡 What is a stepper motor used for in hobby CNC and 3D printing projects?

Answer handy overview: stepper motors provide precise, controllable rotation for moving machine axes.

- It converts electrical pulses into precise motion to move X/Y/Z axes - Handy for driving extruders, mills, and laser engravers in DIY setups - Requires a proper driver with current control to prevent overheating and missed steps