Compact compund planetary reducer (40:1)

thingiverse

WARNING: print at your own risk, pieces may not fit without sanding!!! # High-Performance Planetary Reducer for NEMA 17 (40:1)  ###Compact Design with Optimized Tolerances for 3D Printing _______________________________________________________________________ ###About: This advanced reducer is designed to be mounted directly on top of a NEMA 17 standard stepper motor. It boasts an impressive reduction ratio of 40:1 in a remarkably small package, measuring just 17mm tall and matching the size of NEMA 17 motors (housing width and length). _______________________________________________________________________ #####Gear Ratio: *40:1* _______________________________________________________________________ ###Functioning Principle Explanation: This system consists of two precision-cut rings with internal gearing, one fixed and the other serving as the output ring. Three planet gears are driven by a central sun gear, engaging both rings simultaneously. Each revolution of the carrier (not included, but envisioned for easier explanation) translates to 3 teeth movement on the outer ring in the direction of the motor. _______________________________________________________________________ ###Additional Components: The crucial part needed for successful assembly is an R-1650ZZ bearing (or similar, 5x16x5), which must be press-fitted into the output flange and onto the motor shaft. A minimum of four M3 screws are required to secure this to the motor, along with additional four screws to fasten the cover plate. _______________________________________________________________________ ###Key Considerations: + For functional applications, use liberal amounts of grease or lubricant to ensure smooth operation.