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SFU Ball Screw is a precision transmission element that converts rotary motion into linear motion. It consists of a screw, nut, ball and ball return device, featuring high precision, high rigidity, high efficiency and long life, etc. It adopts an inner-circulation design with a flange-type nut, which is easy to install, and is suitable for small-space operating environments, and is widely used in the fields of numerical control machine tools, robots, and semiconductor equipments.link:http://www.automation-js.com