... ,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, carbon steel ... ,high chrome4.precision: P0,P2,P4,P5,P65.tolerance grade:GB/T307.1---2056.greese/oil: as ...