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Stepper Motor Data

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Published 5 Apr 2018

Reusing Stepper Motors


Over the years I have collected many useful looking stepper motors, now it is time to start using them!

Common stepper motor configurations have 4, 5 or 6 wires corresponding to phases wired as follows:
Bipolar stepper motor wiringUnipolar stepper motor wiringUnipolar stepper motor wiring
4 wire bipolar stepper motor6 wire unipolar stepper motor
(drive as bipolar by ignoring centre tap)
5 wire unipolar stepper motor
(unipolar drive only)
Less common stepper motor configurations have 8 or 9 wires corresponding to phases wired as follows:
Bipolar stepper motor wiringUnipolar stepper motor wiring
8 wire bipolar stepper motor9 wire unipolar stepper motor
(unipolar drive only)

Recovered stepper motors

On the sidebar there is a list of stepper motors that I have recovered from various pieces of scrap equipment and the linked pages include basic motor specifications and connection details.

References and Additional Resources