... )Quality standard:ISO 9001:2000 standard WBBC Cylindrical roller bearings:Brand NameWBBCSeries:C3140Material:GCr15 GCr15SiMnID Size:100mm-1500mmQuality ... speeds.WBBC can produce cylindrical roller bearings comprises the basic types,single row cylindrical roller bearings, caged,mainly of the NU ... , NJ, NUP and N designs double row cylindrical roller bearings, caged, mainly of the NNU and NN designsmulti ...