NEMA 17 Stepper Motor - 34mm, 28N-cm / 40oz-in

NEMA 17 Stepper Motor - 34mm, 28N-cm / 40oz-in

These are the stepper motors we use in our i3 printer kits. They're lightweight and compact, but still provide plenty of torque - we've found them to be perfect for everyday printer duty.

The motor's shaft has been ground flat, making it easy to get a good grip with a pulley, drive gear - or anything that uses a grub screw, really.

Another handy feature of these motors is their detachable leads - this makes installation a breeze, and it's easy to redo your wiring later if you'd like. We've had the included cables customised to plug straight into a RAMPS board, so installation of these motors is literally plug-and-play!

These motors provide an impressive 28N-cm of torque while running at under 1A! More than enough power to get the job done, and you don't have to run your stepper drivers at their limit - perfect!

We recommend these motors for X/Y/Z axis movement on a cartesian printer - for a delta printer, or for use in an extruder, you'd want to look at something with a bit more grunt like our larger 40mm motors (check the related items!).


  • Step Angle: 1.8
  • No. of Phases: 2
  • Insulation Resistance: 100MΩmin (500V DC)
  • Insulation Class: B
  • Rotor Inertia: 38g. cm2
  • Mass: 225g
  • Depth: 34mm
  • Rated Voltage: 4.87V
  • Rated Current: 0.84A
  • Resistance / Phase: 5.8Ω ± 10%
  • Induction / Phase: 9.3mH ± 20%
  • Holding Torque: 28N-cm / 40oz-in
  • Detent Torque: 12N-cm
  • Cable Length: 70cm
  • Cable Connector: 4pin Dupont (RAMPS Compatible)

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  • Product Code: STEPPER-34mm
  • Availability: In Stock
  • $19.95
  • Ex Tax: $18.14