| 摘要 |
PROBLEM TO BE SOLVED: To prevent an oil seal from being deteriorated due to heat generated between an inner ring raceway track part and a rolling body and prevent oil sludge from being caught in a contact face of a lip part of the oil seal and its contact section. SOLUTION: This bearing device is constituted by arranging the rolling body 26 between both raceway track parts of an outer ring 18 and an inner ring 22, fixing the oil seal 32 on an inside diameter face of the outer ring, and bringing its lip part 32b into contact with an outside diameter face in an end part of a bearing of the inner ring 22. In this case, an annular body (a second part) 34 with which the lip part 32b comes into contact is fitted into an outside diameter face of a small diameter part 22b of the inner ring 22, and a clearance 36 for preventing heat generated on an inner ring 22 side from being transmitted to an annular body 34 side is provided between a step wall face 22c of the inner ring 22 and an inner side face 34a of the annular body 34. COPYRIGHT: (C)2007,JPO&INPIT |
