Stepper Motor – NEMA23 – 166


Availability: In Stock


SKU: ROB-191 Mfg Part Number: 57STH56 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 large NEMA 23 Stepper Motor offers a massive 166 of torque, making them suitable for higher loads than their smaller NEMA 17 counterparts. The motor has 200 steps per revolution and features 50 cm leads.

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



  • Steps per Revolution: 200
  • Step Angle: 1.8°
  • Current: 2.8A/Phase
  • NEMA 23 Form Factor
  • Shaft Diameter: 0.25″ / 6.35mm
  • 2-Phase
  • Voltage: 3.0V
  • Resistance: 0.9± 10% Ω/Phase
  • Recommended Holding Torque: 166
  • Cable Length: 500mm


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  Difficulty Level

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

  Product Certifications

  Product Attributes

Weight: 700 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. 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


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