Nema17 Two-Phase Stepper Motor 17HS9612, 42.5x42.5x60mm
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Prices updated: 13 Oct 2026
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About this product
A NEMA 17 two-phase, four-wire stepper motor with a 42.5 x 42.5 x 60 mm body, widely used in RepRap-style 3D printers and CNC machines. It moves in discrete steps driven by current pulses from a stepper motor driver, which allows precise positioning.
Specifications
- Frame size
- NEMA 17 (42 mm)
- Dimensions
- 42.5 x 42.5 x 60 mm
- Type
- Two-phase, four-wire
- Control
- Stepper motor driver required
- Typical use
- 3D printers and CNC machines
Frequently asked questions
How do I wire a four-wire stepper motor?
Connect the two coils to the A+, A- and B+, B- outputs of a stepper driver. Each coil uses one pair of wires, which you can identify with a multimeter by checking which pairs show continuity.
Can I drive this motor directly from an Arduino pin?
No. A stepper motor needs a driver that switches the coil current in sequence. The microcontroller sends step and direction signals to the driver, and the driver supplies the motor current.
