1.ISO9001,ISO/TS16949 certificated 2.precision:P0,P6,P5,P4,P2 3.used in gearbox of auto,rolling mill 4.ID:from 20mm to300m high speed Full complement cylindrical roller bearing Electrical machine cylindrical roller bearing accept sample: CYLINDRICAL ROLLER BEARINGSeries:N, NU, NJ, NUP, NN, etcPrecision RatingP0/P6/P5/P4Lubrication:Grease, oilMaterialBearing steel(GCR-15),Gcr15SiMn,Chrome steel ...