A ball screw, originally called antifriction nut, is a type of mechanical device used for the conversion to linear motion from rotational motion.
Ball screws have a long-threaded shaft that has ball bearings to bear significant weight and stress while reducing friction at the same time. Typical ball screws have a nut and a screw. There are some helical indentions that are formed on the outer part of the unit and the screw alike to let the ball bearings roll in the middle of them. Every time ball screws rotate, ball bearings will travel to the return system prior to changing direction.
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