| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact ball bearing at a low price, which is capable of preventing grease leakage. SOLUTION: In the end of the inner ring 2 periphery of the bearing in an axial direction, two-step parts 13, 14, 15, 16 with large and small diameters smaller than the shoulder diameter of the trace surface of the inner ring 2 are formed, and the sub lips 35, 36 of seal members 18, 19 are configured to be released to the step parts 13, 15 with large diameters. Thus, the distance between the circular part 39 of a crown holder 7 and the sub lip 35 is enlarged so as not to cause interference between them even when the dimensions of an outer ring 1 and the inner ring 2 is reduced. COPYRIGHT: (C)2005,JPO&NCIPI |
