... , NTN,KOYO, THK,IKO,NACHImain product:shperical roller bearing,cylindrical roller bearing, taper roller bearing,needle bearing,angular contact ball bearing,thrust ball bearing,thrust roller bearing.3.material: stainless steel,bearing steel ... ) d 55-------80mmThe main type of cylindrical roller bearing:The size of single row cylindrical roller bearing: d 15-----800mmThe size of single row ...