# Cycloidal Drive Help: Design help sought for NEMA 17 stepper motor cycloidal reducer

- Source: Reddit r/robotics
- Published: 2026-10-25T14:49:02.000Z
- RoboHot: https://robohot.news/en/items/kx2jljo5x35hcl1jgmkx9pxv6
- Original: https://www.reddit.com/r/robotics/comments/1xf4aqe/cycloidal_drive_help/

## Summary

An enthusiast designing a cycloidal reducer for a NEMA 17 stepper motor is looking for design websites and guides, and wants to clarify which parameters must be calculated independently. Several reducers they have printed are all off by a few millimeters and jam after a few turns.