... low noise, high speed 4 good service FAG SKF NSK NTN KOYO 6315 Bearing Deep groove ball ... , 2RS,2RZ Ball bearings snap ring: N, NR Tolerance codes: ABEC-1, ABEC-3, ABEC-5, ABEC ... for rings and balls: 59 - 63HRC Ball bearings bore size: 1 - 200mmVersions: Ball bearings with one ... -Mopen, ZZ, 2RS220460886348-Mopen, ZZ, 2RS24050095Pictures: SKF NSK NTN KOYO 6315 Bearing Deep groove ball bearing