... TA,TLA=HK)2,steel plat(NA,TAF,TAF=NK) Needle bearingsISO 9000: 2000ISO/TS 16949Short delivery timeManufacturer price, high ... precision grade, please contact this company. Materials: Material for needle roller is GCr15 bearing steel, quench-hardening HRC60---65.Material ... inner-cutting roundness should be regulated according to different conditions.Machine tools should be used for press-in fitting or ...