| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing device capable of improving durability and sealability of a seal lip. <P>SOLUTION: The bearing device includes a rolling bearing and a seal device 50 for sealing an inside space of the rolling bearing. The seal device 50 includes a seal member 54 arranged on the outer ring side of the rolling bearing, and an oil thrower 62 arranged on the inner ring side of the rolling bearing. A main lip 54a and a dust lip 54b contacting with the oil thrower 62 in two places separated in the axial direction, are arranged in the seal member 54. An annular high expansion part 54g formed of a material higher in a thermal expansion coefficient (a linear expansion coefficient) than the dust lip 54b, is installed along the peripheral direction on the dust lip 54b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
