Ballscrew end support unit EK,EFseries 1.Anti-friction,Dustproof,Low backlash ... .Easy installation 3.C5 class 4.good service Precision ballscrew End support unit EK,EF seriesKinds of types:AK,AF,BK ... two or more bearings are mounted.Application:Ball screw and end support unit are widely used in actuators of high precision ...