Ballscrew end support unit EK,EFseries 1.Anti-friction,Dustproof,Low backlash ... seriesKinds of types:AK,AF,BK,BF,EK,EF,FK,FF...As a professional ball screw support units manufacturer ... is greater than conventional bearings. These bearings have a 60 contact angle so that radial and thrust load ... dustproof,Zero Backlash. 5.Models:AK,AF,BK,BF,EK,EF,FK,FF...Specifications:Product pictures:Product Types: ...