linear bearing 1.high quality of bearing and packaging 2.ISO9001:2000 3.SKF,NSK,FAG 4.shorter delivery time linear bearingDetails: (1) ... Shield / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ ... )Retainer: PTFE, nylon, PEEK or (stainless)steelLinear BearingsDetails:Linear bearings have the characterized of smooth movement,low frication,high ...