| 摘要 |
A bearing seal that is designed so that it can be mounted between one element and the other element of a bearing rotating relative to each other, thereby sealing the bearing. The bearing seal includes a seal ring and a seal body. The seal ring and seal body being adapted to be fitted on and secured to the one element and other element of the bearing rotating relative to each other, respectively. The seal ring includes a first cylindrical portion extending in the axial direction of the bearing and adapted to be fitted on and secured to the peripheral wall of the one element rotating relative to the other element of the bearing, a flange portion extending from the first cylindrical portion toward the radial direction, and a second cylindrical portion extending from the forward end side of the flange portion toward the axial direction of the bearing. The seal body includes a reinforcing ring having a radial one end side adapted to be fitted on and secured to the peripheral wall of the other element rotating relative to the one element of the bearing and having the other end side extending toward the seal ring and an elastic element reinforced by the reinforcing ring. Upon the seal ring and seal body being mounted in the bearing, the elastic element includes a first lip portion, s second lip portion and a third lip portion. The first lip portion is extending from the reinforcing ring toward the radial other end side and adapted to make sliding contact with the peripheral wall of the first cylindrical portion of the seal ring. The second lip portion, located axially of the bearing and inwardly of the first lip portion, is extending from the reinforcing ring toward the radial other end side and adapted to make sliding contact with the peripheral wall of the first cylindrical portion of the seal ring. The third lip portion, located axially of the bearing and inwardly of the second lip portion, is extending from the reinforcing ring toward the radial direction and adapted to make sliding contact with the peripheral wall of the second cylindrical portion of the seal ring.
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