... ISO 9001:2000 certificate Chrome/Stainless steel thrust needle roller bearing/thrust needle bearings/thrust needle bearingThrust needle bearing1 ... 55GS81124WRoller Bearing 1 ... Series6) Inner ring (IR,LR,LRB)Series7) Trust Roller Bearing(AXK,AS,LS,ZS,WS,NTA,TRA,TRB, ... cage assemblies (K,KT,KBK,KZK,KZW)Series9) Heavy duty roller bearing (NA,NK,NKI,NAV,NAO,HJ,BR ...