Ball Screw Systems
Advanced Micro Controls Inc PI (Physik Instrumente) L.P. Zaber Technologies Inc. Servo2Go.com Aerotech, Inc Steinmeyer Inc.
A ball screw is a mechanical or motor-driven linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw.