Pololu
Stepper Motor: Bipolar, 200 Steps/Rev, 42x38mm, 2.8V, 1.7 A/Phase
A NEMA 17 hybrid bipolar stepper motor with a 1.8° step angle (200 steps per revolution). Each phase draws 1.7 A at 2.8 V, delivering a holding torque of 3.7...
A NEMA 17 hybrid bipolar stepper motor with a 1.8° step angle (200 steps per revolution). Each phase draws 1.7 A at 2.8 V, delivering a holding torque of 3.7 kg·cm. Four colour-coded wires with bare leads connect to two coils: black/green for one coil, red/blue for the other.
Best driven with a dedicated bipolar stepper motor driver rather than direct H-bridge control for smoother operation and microstepping support.
Specifications
- Type – Hybrid bipolar stepper
- Step Angle – 1.8° (200 steps/rev)
- Rated Voltage – 2.8 V per phase
- Rated Current – 1.7 A per phase
- Holding Torque – 3.7 kg·cm (51 oz·in)
- Motor Size – 42 × 38 mm (NEMA 17 form factor)
- Wiring – 4 wires with bare leads (black, green, red, blue)
Ideal For
- 3D printers and CNC machines
- Robotics and automation
- Camera sliders and motion control
- Precision positioning systems
Package Contents
- 1× Bipolar stepper motor (NEMA 17)
Jargon buster
Plain-language definitions for the technical terms used above.
- kg·cm
- A torque unit often used for hobby servos, meaning how many kilograms of force the servo can hold at a 1 cm arm length. A higher kg·cm rating means the servo can move or hold heavier loads, but power supply current needs may also increase.
- motor driver
- An electronic circuit that lets a low-power controller switch and control a motor that needs more current than the controller pins can safely provide. Checking motor driver support matters because pumps and motors usually cannot be connected directly to a microcontroller output.
- Torque
- A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.
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Brands
Robotics & Motion
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