Roller screw

Low-friction precision screw-type actuato

A roller screw, also known as a planetary roller screw or satellite roller screw, is a low-friction precision screw-type actuator, a mechanical device for converting rotational motion to linear motion, or vice versa. Planetary roller screws are used as the actuating mechanism in many electromechanical linear actuators. Due to its complexity, the roller screw is a relatively expensive actuator, but may be suitable for high-precision, high-speed, heavy-load, long-life, and heavy-use applications.

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