| 摘要 |
PROBLEM TO BE SOLVED: To enable use at high speed rotation and suppress grease lack early, regarding a comb-shaped holder.SOLUTION: A comb-shaped holder includes an annular part 10 and a plurality of pillar parts 20 provided with intervals in an axial direction and in a circumferential direction from one side surface 11 of the annular part 10. A pocket 7 is formed, which holds a roller 4 between adjacent pillar parts 20, 20 on the side of the one side surface 11 of the annular part 10 and in the circumferential direction. On the outer periphery of the annular part 10, a plurality of projection parts 41, opposite to the inner peripheral surface of an outer ring with an interval and guided to the inner peripheral surface, and a plurality of recess parts 42, holding grease from and to the inner peripheral surface of the outer ring, are provided respectively in the circumferential direction. |
