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What is a cycloidal pinwheel reducer?
A harmonic drive is a type of gear reducer. Its basic operating principle involves an input shaft that connects to and drives an eccentric bearing. This bearing, in turn, drives a harmonic gear—sometimes referred to as a cam—that is connected to the output shaft.
Harmonic drive gearbox
A typical harmonic drive, such as Onvio’s Dojen series, achieves zero backlash by combining a composite reduction cam with preloaded, fully loaded needle‑bearing cam followers.
The cycloidal disk (or cam) features convex lobes or teeth that engage with a specific type of cam follower—typically a pin or needle roller bearing. The eccentric rotation of the cam is converted into rotational motion of the output shaft, which rotates at a lower speed and delivers increased torque.
The primary advantage of a harmonic drive lies in its zero or near-zero backlash, which translates into high precision and accuracy. This makes it particularly well-suited for applications requiring tight tolerances and precise positioning, such as robotics, machine tools, and similar uses. Additionally, harmonic drives feature rolling contact rather than sliding contact, resulting in reduced overall wear and longer service life.
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Shenzhen Jier Transmission Equipment Co., Ltd. is a high-tech enterprise that has been focusing on the sales, maintenance, and technical services of reducers for more than ten years. It is the core agent of world-renowned brands such as SEW reducers, NORD reducers, Bauer reducers, and Baumer sensors in Switzerland in Germany
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