... packaging 2.competitive price 3.ISO9001:2000 thrust ball bearing 51256Details: Shield / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ ... nylon, PEEK or (stainless)steel thrust ball bearing 51256Specifications:Single direction thrust ball bearings consist of one row of balls, ... and can be mounted separately. Single direction thrust ball bearings, can accommodate axial loads in one direction ...