thrust ball bearing 51256 1.high quality of bearing and packaging 2.competitive price 3.ISO9001:2000 thrust ball bearing 51256Details: Shield / closure: Open ball bearing, Z, ZZ, ... Retainer: PTFE, nylon, PEEK or (stainless)steel thrust ball bearing 51256Specifications:Single direction thrust ball bearings consist of one row of balls, which ... ,TIMKEN,KOYO,NICHI,FAG,and so on. thrust ball bearing 51256