NEMA 17 Planetary Gearbox (Modular)

Planetary Gearbox bolts directly onto a NEMA 17 stepper motor using M3 bolts.

One layer gives you a 3:1 gear ratio. Add as many extra layers as you like to achieve any gear ratio in powers of three.

Designed in Autodesk Fusion. Originally printed with PLA.

Files:

The “Base layer” file contains everything you need for a 3:1 gearbox. To add more layers, print the “Additional layer” file and mount to the top of another layer.