Harmonic Drive vs Planetary Reducer: A Practical Guide to Transmission Selection for Robot Joints
Introduction Selecting the right transmission for a robot joint is one of the most consequential decisions in actuator design. The gearbox determines the joint's precision, stiffness, torque capacity, and cost — and the choice between harmonic drive and planetary reducers is rarely straightforward. This guide provides a structured comparison based on application requirements, not marketing claims. 1. Fundamental Differences Harmonic Drive (Strain Wave Gear) || Parameter...
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