... precision,long life 3)20 year OEM 4)ISO9001:2000certificate Full complement cylindrical roller bearing1) used in machine tools ,heavy-duty ... bearing,needle bearing ,.ID Size20-2000mmCage MaterialSteel ,BrassMaterialGCr15 , 50Mn,42CrMoPrecisionP0,P4,P5,P6VibrationV1,V2,V3,V4ClearanceC2 C3 C4 C5Quality StandardISO9001:2000ServiceOEM ...