| 摘要 |
1. A front sealing unit for revolving elements, characterised in that it comprises two mating rings (1 and 2), one of them is a flange sleeve (1) mounted on the axle (10) and the other cylindrical ring (2) is mounted from the outside in the hub (7); the cylindrical ring has a series of frontal lips (4) on its front surface; the frontal lips are perpendicular to the flange (3) and coaxial with flange sleeve (1) ; the front lips are in contact with the flange (3).<IMAGE> |
