Rolling-ring mechanical drives are simple, efficient, robust, and can eliminate the need for electronic controls. Bob Eisele, Amacoil Inc., Aston, Pa. Rolling-ring drives are friction drives that ...

Slide guides, also known as linear guides, are precise, linear bearings that use rolling elements, either balls or rollers, moving along two raceways to reduce friction and stick-slip to provide ...

This series of short explainer films with Professor Brian Cox comprises six clips focused on forces, speed and motion. Each ...