... :5-1500mm 3.ISO9001-2000certificate 4various type Needle bearing:1.Material:chrome steel Gcr15 or as requirement2 ... series:HF,HFL,RC,RCB,EWC ..(3) Thrust roller bearing series:AXK,AS,LS,ZS,WS,NTA,TRA, ... seriesCSK,KK,BB,ASNU,TSS,DC ...(5) Combine bearing series:NKIA,NKIB,NKX,NKXR,SL...(6) Cam ... STO,NUKR...(8) Roller and cage assemblies seriesK,KT,KBK,KZK,KZW...(9) Heavy duty roller bearing series:NA,NK, ...