Seal: open ,2RS, 2Z,Z,RS,NR D:5 d:2 H:2.5 Accuracy: P0, P2, P4, P5, P6 The noise value: Z1, Z2, Z3 Clearance: C0, C2, C3 , C4 Brief introduction: Deep groove ball bearing is one of the most common types of rolling bearing, the inner ring and outer ring and cage, roller structure.