model of popular stepper motor QH4-4401 SMJ40-4880-A

thingiverse

This is a basic model of a widely used stepper motor. My motor's name is QH4-4401, although it's an extremely common component that was actually taken from an old inkjet printer. The motor has a diameter of 42mm and a body height of 22mm. If you've torn out some similar motors, chances are you'll have one that looks just like this. This particular model is the 10-tooth version.