DRE High Precision Ball Screw SFU : Balls with free motion in the ball screw assembly transfer the force and motion between screw and nut. This transfer mode replaces the traditional transfer mode that screw shaft and nut effect directly. Therefore the minimum rolling friction takes place of the sliding friction of traditional screw. The transfer efficiency of ball screw will reach more than 90%. The drive torque of transfer unit reduces to 1/3 of sliding screw.This also reduces the heat release largely. Below please find  the reference number of CNC Ball Screw And Nut,and click the number to see more details and specifications.Below please find  the reference number of Ball Screw, and click the number to see more details and specifications.