What is a cycloidal reducer?

A cycloidal reducer is a kind of gear reducer. The basic operation is that an insight shaft connects to and drives an eccentric bearing. This bearing further drives a cycloidal disk (sometimes referred to as a cam) that connects to an result shaft.

cycloidal reducer
Common cycloidal speed reducers, such as for example these Dojen series reducers from Onvio, offer zero backlash by combining a compound reduction cam with preloaded, complete compliment needle bearing cam followers.

The cycloidal disk (or cam) has lobes or teeth that build relationships some form of cam follower, typically a pin or needle bearings. The eccentric rotation of the cam is definitely changed into rotation of an result shaft at a reduced speed and a rise in torque.

The main advantage of cycloidal reducers is their property of zero or near-zero backlash, which translates into high precision and high accuracy. This is especially in demand where highly specific and accurate positioning is required, for instance in robotic applications, machine tools, and comparable applications. Cycloidal reducers also feature rolling as Rotary Air Compressors opposed to sliding contact, thus experiencing less overall wear.