Stepper Motor – NEMA17 –


Availability: Temporarily Out Of Stock

Out of Stock - Available on Backorder

SKU: ROB-140 Category: Tags: , ,


Stepper motors are great motors for position control. They can be found in desktop printers, plotters, 3d printers, CNC milling machines, and anything else requiring precise position control. Steppers are a special segment of brushless motors. They are purposely built for high-holding torque. This high-holding torque gives the user the ability to incrementally “step” to the next position. This results in a simple positioning system that doesn’t require an encoder. This makes stepper motor controllers very simple to build and use.

This specific NEMA 17 Stepper Motor offers 31 of torque and 200 steps per revolution. Additionally, the motor has a handy JST connector, meaning the included 1000mm wires can be disconnected directly from the motor.

Coil 1: Black / Green
Coil 2: Red / Blue



  • Steps per Revolution: 200
  • Step Angle: 1.8°
  • Current: 1.2A/Phase
  • NEMA 17 Form Factor
  • Shaft Diameter: 5mm
  • 2-Phase
  • Voltage: 4.2V
  • Resistance: 3.5± 10% Ω/Phase
  • Recommended Holding Torque: 31
  • Cable Length: 1000mm


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  Difficulty Level

Soldering Skill: N/A
Prototyping Skill: Beginner
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 234 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


  1. Ron Foster (verified owner)

    What is the recommended motor controller for this motor?

  2. William @ BC Robotics

    It will depend on the application, a normal driver will need to handle approx. 1.2A continuous per phase at the 4.2V drive voltage. Ideally for lower voltage motors you would want to use a chopper driver like this:

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