| 摘要 |
PROBLEM TO BE SOLVED: To simplify the manufacturing process and reduce the weight of a deep groove ball bearing by forming an outer ring and an inner ring using a sheet metal, reduce the cost, and provide the function to back up the load to be sustained through a rolling element. SOLUTION: A sheet metal is pressed to form an outer ring 1 and an inner ring 11, and in the outer ring 1, an outer surface side and an inner surface side are formed back-to-back manner, and a raceway side of the inner surface side 7 is recessed to form a raceway groove 9. A load back-up part 5 is recessed on the outer surface side 3 in a back-to-back manner with the recess of the raceway groove 9 on the inner surface side. In the inner ring 11, the outer surface side 13 and the inner surface side 17 are formed in a back-to-back manner, the raceway surface of the outer surface side 13 is recessed to form a raceway groove 15. A load back-up part 19 is recessed on the inner surface side 17 in a back-to-back manner with the recess of the raceway groove 15 on the outer surface side. |
