| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a rolling bearing that can restrain a pressure increase in the bearing inside when pressing in a sealing device. <P>SOLUTION: In a hub unit 1, the sealing device 8 has a fitting part 83 fitted to an end part in the axial direction of a raceway surface side peripheral surface of a fixed wheel 2, and the fitting part has at least one exhaust groove 85 for communicating the bearing inside with the bearing outside. The fitting part 83 has an elastic fitting part 83b continuously formed of an elastic member 82 up to a midway position P2 toward the bearing inside from a bearing outside end part P3 in the axial direction, the elastic fitting part has a tooth 82d having a predetermined interference between the fixed wheel 2 and itself, gradually reducing an opposed interval to the fixed wheel 2 toward the bearing outside end part P3 from a bearing inside end part and being an angle shape in the peripheral direction of a fitting surface and at least one elastic groove part 82e for communicating the bearing inside end part P1 with the bearing outside, a part of the exhaust groove is formed of an elastic groove part 82e, and after pressing the sealing device in the bearing, the tooth 82d is crushed and seals a bearing inside space 6. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
