| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform satisfactorily grease lubrication for a rolling bearing rotated with a high speed by charging the grease on one end surface of an annular ring which composes a retainer. SOLUTION: A groove 4 is provided on the annular ring 1 which composes the retainer H, which directly connects one end face 11 (a grease deposit plane) of the annular ring 1 with a pocket surface 20. The width of the groove 4 is continuously narrowed with respect to the circumferential direction E of the annular ring 1 from a far-off side to a near side of the pocket surface 20 and is continuously narrowed with respect to the depth direction (axial direction of the annular ring 1) as it is deepened. A cutaway 21a which continues to the groove 4 is provided in the tongue part 21 of a pocket 2. A wall part 3 protruding from the end face 11 is formed along the outer periphery of the annular ring 1.</p> |
