Can planetary joint modules achieve the same level of precision as harmonic drive modules?
With the rapid development of humanoid robotics from 2023 to 2025, HONPINE has continued to explore and innovate. In 2026, we proudly introduce our latest solution — the HPJM DC Planetary Actuator.
Whether for humanoid robots or industrial automation applications, customers typically focus on several key factors when selecting an actuator:
Precision
Ease of integration and installation
Long-term reliability and stability
HONPINE is confident in positioning the HPJM as one of the best planetary joint modules on the market. Here’s why:
Self-developed 24-bit dual encoders
Designed in-house by HONPINE’s engineering team for enhanced sensing accuracy and redundancy.
High transmission precision
Achieving backlash < 10 arcmin, delivering excellent positioning performance.
Stable thermal performance
Capable of reliable operation under working temperatures up to ≤ 67°C.
To ensure both precision and production capacity, HONPINE has introduced advanced manufacturing equipment from Germany and Switzerland.

Currently, six models of HPJM planetary actuators (sizes 30 to 105) have completed internal testing and are already being piloted by several companies in China.
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Learn more about the story of HONPINE and industry trends related to precision transmission.
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