... precision,long life 3)20 year OEM 4)ISO9001:2000certificate Full complement cylindrical roller bearing1) used in machine tools ,heavy-duty ... bearing,heavy duty bearing,Machine-toolbearing,Construction machinery,Auto bearing ,Engine bearing,needle bearing ,.ID Size20-2000mmCage MaterialSteel ,BrassMaterialGCr15 , 50Mn,42CrMoPrecisionP0 ...