| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing that prevents an increase in pressure in the bearing when a sealing apparatus is press-fitted. <P>SOLUTION: A hub unit 1 includes an inner ring 4 with a raceway formed on an outer circumferential surface, an outer ring 2 with a raceway formed on an inner circumferential surface, and sealing apparatuses 8 arranged at both ends in axial direction of a bearing inner space 6 between the inner ring 4 and the outer ring 2 to seal the bearing inner space 6 by press-fitting. One of the inner ring 4 or the outer ring 2 serves as a rotating ring 4, and the other serves as a fixed ring 2. The sealing device 8 includes an engagement part 83 that engages with an axial end of a raceway-side periphery of the fixed ring 2. The engagement part 83 includes at least one exhaust groove 81a that leads axially from a bearing inside end P1 to a middle position P2 toward the bearing outside. <P>COPYRIGHT: (C)2013,JPO&INPIT |
