Anti-rotation noise reduction device for ball screw

The utility model discloses an anti-rotation noise reduction device for a ball screw, which is characterized in that a lead screw nut is sleeved on the ball screw, and one end of the lead screw nut is fixedly connected with a pressure buildup piston of a PSU (Power Supply Unit) cylinder body; the ball screw is inserted into the feed screw nut and the pressure building piston; the anti-rotation sleeve is sleeved on the lead screw nut and the pressure building piston; the anti-rotation sliding piece is formed on the lead screw nut and located between the anti-rotation sliding piece and the anti-rotation sleeve. According to the utility model, the noise generated by the direct surface contact of the screw nut and the anti-rotation sleeve is reduced, the metal contact between the screw nut and the anti-rotation sleeve is avoided, the noise is reduced, and the noise generated at the contact part of the anti-rotation sleeve and the PSU cylinder body due to the disturbance generated by a bearing, assembly, bearing a