# Zmotor humanoid robot linear actuator teardown: stator, rotor, and IPRS inside a 32 mm body

- Source: Reddit r/humanoidrobotics
- Published: 2026-10-28T04:42:23.000Z
- RoboHot: https://robohot.news/en/items/al0qx62sibchr8b3jyi0f66hb
- Original: https://www.reddit.com/r/humanoidrobotics/comments/1xheu3d/inside_zmotors_linear_actuator_for_humanoid/

## Summary

A teardown of the Zmotor humanoid robot linear actuator shows a stator, rotor, and inverted planetary roller screw (IPRS) integrated within its 32 mm body. The content is presented as a teardown video and does not provide load, stroke, or measured performance data.