Deep groove ball bearing outer ring, an inner ring, a steel ball and a group of holding structure into. 6200 Series is bearing deep groove ball bearings, the inner diameter (d) is 10mm ,, outer diameter (D) is 30mm, thickness (B) is a 9mm. 6200 Series bearing is a deep groove ball bearings, mainly used for centrifuges, axle bolts, CNC punch, cylindrical gear reducer, electric vehicle motors, valves, CNC cutting, electrodialysis equipment, electrical instruments, car lights and other types of equipment.