| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing capable of suppressing increase in pressure inside a bearing when a sealing device is press fitted. <P>SOLUTION: In a hub unit 1 including: an inner race 4 in which a raceway surface is formed on an outer circumference; an outer race 2 in which a raceway surface is formed on an inner circumference; and a sealing device 8 arranged at either end in an axial direction of a bearing internal space 6 between the inner race 4 and the outer race 2 to seal the bearing internal space 6, wherein the outer race 2 has a fitting part 21 into which the sealing device 8 is press fitted at axial direction either end of a raceway surface side circumferential surface thereof, the fitting part 21 is provided with at least one gas discharge groove 21a continuing in the axial direction from a bearing outer side end P1 toward a bearing internal side to a halfway position P2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
