... 2.competitive price 3.ISO9001:2000 thrust ball bearing 51216Details: Shield / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ Tolerance code ... , AISI316 Retainer: PTFE, nylon, PEEK or (stainless)steel thrust ball bearing 51216Specifications:Single direction thrust ball bearings consist of one row ... all kinds of famous brands,NSK,SKF,TIMKEN,KOYO,NICHI,FAG,and so on. thrust ball bearing 51216