Nema Stepper Motor

What Size Stepper Motor Should You Use?

While the size of a stepper motor is just the footprint it’s the winding that determines torque. There are Nema 17’s with as much torque as a Nema 23. Most 3d printers use stepper motors to drive z-axis motion lead screws to raise or lower the bed or gantry. The lead screw serves as a gear reduction increasing torque.

1.8 Degrees vs 0.9 Degrees

While many of the newer corexy designs use 0.9 degree motors to maintain synchronization of the two motors while moving in X and Y directions. The 0.9 degrees steps are smaller which reduces the dead zone between steps. This helps reduce artifacts found in printed objects.

Nema Stepper Motor Dimensions

Nema Stepper Size

  • Nema17 Size 1.7 inches x 1.7 inches
  • Nema 23 Size 2.3 inches x 2.3 inches
  • Nema 34 Size 3.4 inches x 3.4 inches
  • Nema 42 Size 4.2 inches x 4.2 inches