| 摘要 |
PROBLEM TO BE SOLVED: To achieve the low torque of a bearing device for an axle keeping its sealing performance. SOLUTION: This device is number equipped with an outer member 5 which is mounted in a fixed condition, an inner member 1 which is inserted in the outer member 5 in a concentric circle condition to be rotated, a plurality of rolling elements 7 which are equipped on a circumference between the outer member 5 and the inner member 1 and a sealing device which is fitted to the outer member 5 to form a sealing part between the inner member 1, and the outer member. The sealing device has a main body formed of a rubber material with core metal, inner and outer lip parts 13, 14 wherein the sealing part slides with the inner member 1, and at least sliding surfaces of the inner and the outer lips 13, 14 are formed of polytetrafluoroethylene, and the outside of the outer lip 14 is covered by a rubber material which is connected with the main body, and a tip which slidingly contacts with the inner member 1 is equipped together. |
