To realize a structure capable of making a lubrication performance good between an inner face of each of pockets 9a, 9a and a rolling face of a ball held in each of the pockets 9a, 9a.
Projection curve parts 15, 15 projecting towards central parts of the respective pockets 9a, 9a are formed at an end part on an inside diameter side on an inner face of each of the pockets 9a, 9a. When a ball bearing embedding a cage 6e is operated, the respective projection curve parts 15, 15 are brought into contact with the rolling face of the ball, so as to always keep a clearance between open peripheral edges 12a, 12a on the inside diameter side of the respective pockets 9a, 9a and the rolling face of the ball. As a result, a lubricant entering the respective pockets 9a, 9a is rarely scraped off by the open peripheral edges 12a, 12a on the inside diameter side of the respective pockets 9a, 9a, so as to solve the problem.
| WO/2011/062175 | BEARING DEVICE FOR WHEELS |
| JP2022034801 | BALL BEARING WITH SEAL |
| WO/2020/162448 | SOLID-LUBRICATED ROLLER BEARING |
Nakai Shun
Kinzo Koyama
Next Patent: PRESSURE-CONTROL DEVICE BY FLAPPER DRIVING