Nema 17 Stepper Motor With 34mm Length And 5 To 1 Planetary Gearbox MG Series Delivers Heavy Duty Torque And Low Noise For Precise Motion In CNC Machines 3D Printers And Robotic Projects From StepperOnline

NEMA 17 Stepper Motor with 5:1 MG Gearbox, high torque
✔️ 0.25 Nm holding torque; 5:1 gear ratio; backlash ≤30 arcmin

This single-unit NEMA 17 motor comes with an integrated MG5 planetary gearbox, delivering heavy torque and low noise for precise motion in CNC machines, 3D printers, and robotic projects.

✅ Frame size 42 x 42 mm (1.65 x 1.65 in)
✅ Motor length 34 mm (1.34 in); Gearbox length 40 mm (1.57 in)
✅ Output shaft Ø8 mm (0.31 in) with keyway
✅ Gearbox: 5:1 ratio, powder metallurgy gears, 90% efficiency
✅ Backlash ≤ 30 arcmin; Max torque 9.0 Nm; Moment 18.0 Nm

💡 What is a stepper motor with gearbox used for in CNC machines and 3D printers?

It's handy for precise, repeatable motion with controlled torque.

- High torque at low speeds for accurate positioning. - Backlash reduction via planetary gearing improves repeatability. - Easy motor/gearbox swap thanks to integrated shaft coupling. - Quiet operation suitable for desktop or small industrial setups.