# Zhejiang Sankai Electromechanical completes hundreds-of-millions-yuan Series B funding, enters humanoid robot joint reducer supply chain

- Source: 人形大讲堂 · 微信公众号
- Published: 2026-10-19T10:00:00.000Z
- RoboHot: https://robohot.news/en/items/s1uc9hjz6giltkefg5zu5avg1
- Original: https://mp.weixin.qq.com/s?__biz=MzkzMjY2Mzc5MA==&mid=2247496076&idx=1&sn=b7efd2521648c94c2131c810add4403a&chksm=c30c6a9e6ad21146550f62f7000d0e0d80fbb1e8f2376f1182f4d056725c17476d319e21e720&scene=126&sessionid=1792405971#rd

## Summary

Zhejiang Sankai Electromechanical completed a Series B funding round of hundreds of millions of yuan, jointly led by the Industrial Machine Tool Industry Investment Fund and Wuchan Zhongda Investment, with Caitong Capital and Wenling Haihe Rongzhi participating. Sankai has spent 19 years making basic parts for machine tools and automated production lines; since 2022 it has launched harmonic reducers, and in 2024 it launched planetary joint reducers suited to humanoid robot joints, with output torque covering 17 to 100 Nm and backlash controlled within 1 arcminute, and it has become a core component strategic partner of the Beijing Humanoid Robot Innovation Center's Tiangong robot.