57BYGH56-401A NEMA23 Stepper Motor 1.2 N·m 2.8A
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Prices updated: 13 Oct 2026
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About this product
The 57BYGH56-401A is a NEMA 23 two-phase hybrid stepper motor with a 1.8° step angle and 1.2 N·m holding torque. It has a 2.8 A rated phase current and four lead wires. It is used in CNC machines, 3D printers, and positioning systems that need precise, repeatable movement.
Specifications
- Step angle
- 1.8°
- Holding torque
- 1.2 N·m (175 oz-in)
- Rated current
- 2.8 A per phase
- Phase resistance
- 0.9 Ω
- Phase inductance
- 2.5 mH
- Motor body length
- 56 mm
- Lead wires
- 4
- Weight
- 0.7 kg
Frequently asked questions
Does this motor need a special driver?
Yes, it is a bipolar two-phase stepper and needs a stepper motor driver, such as a TB6600 or DRV8825-class driver, set to the 2.8 A rated current or below. Driving it directly from a microcontroller pin will not work.
How do I wire the four leads?
The four leads form two coils, A+ with A- and B+ with B-. Identify each coil with a multimeter by measuring resistance between pairs of wires, then connect each coil to the matching driver output. Swapping the leads of one coil reverses the direction of rotation.
