530:1 Planetary Reduction Gearbox for NEMA 14 Stepper Motor
thingiverse
I needed a 200:1 reduction gearbox for a project and couldn't find one online, so I decided to try and design one. The end result was printed on a Creality CR10 at 0.06mm layer height in PLA. Much to my surprise, it actually works as designed. The final assembly is just 6mm longer than a standard NEMA 17x38mm stepper motor. The design is in modular stages, each of 4.8:1 and so can be customised for different gear ratios. For my application I used 3 stages and a .9 degree stepper motor. This gives 110:1 with 0.008 degrees per step. Print in Nylon or PETG for a usable component
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