11-to-1 NEMA17 hypocycloid reducer
thingiverse
Inspired by chriswal's Nema 17 Cycloidal Gear box prototype and [Otvinta's tutorial](http://otvinta.com/tutorial05.html) I decided to give it a go and see if I could design and print a working hypocycloid reducer for Nema17 stepper with 11:1 ratio. I just basically scaled the model in the Otvinta's tutorial to fit the frame of Nema17. The eccentric input 'shaft' is almost a copy from the chriswal's design. Nonetheless I have modeled all the parts in Blender and Fusion360 myself. After the first print in PLA and assembly I was amazed to see that it really works and basically has no play/backlash whatsoever. I used PTFE grease to lubricate the gear and output. To share similar feeling of success, you need to have your printer very well tuned to produce dimensionally accurate prints. You need: - 2x 608 bearings, - M3 nut and M3x5mm set screw for locking the input to stepper shaft. - M5 hexagonal head bolt for output.
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