... as requirement 2Size:5-1500mm 3.ISO9001-2000certificate 4various type Needle bearing:1.Material:chrome steel Gcr15 or as ... series:HF,HFL,RC,RCB,EWC ..(3) Thrust roller bearing series:AXK,AS,LS,ZS,WS,NTA,TRA ... seriesCF,KR,CR,NUTR,NATR,RAN222RS,STO,NUKR...(8) Roller and cage assemblies seriesK,KT,KBK,KZK,KZW...(9) ... Heavy duty roller bearing series:NA,NK,NKI,NAV,NAO,HJ,BR ...