| 摘要 |
In rolling bearings the phenomena "breathing", i.e. increase and decrease of damp volume inside the bearing mainly due to temperature circumstances, is wellknown. In view of this phenomena the lip-seal (9 min ) of the (mechanical) seal (9) will slightly but regular be pushed from its support i.e. the bearing innerring (2), which leads to escape of lubricant. To effectively avoid this leakage a second seal (5) having magnetic properties is added to the (mechanical) seal (9). This magnetic seal (5) is provided with grooves (6) and projections (7) adjacent the sealing side of the seal arrangement (5,9). Mainly between said projections (7) magnetic fluid (8) is applied and fixed thereto due to the magnetic properties of the seal arrangement. Breathing inside the bearing (1, 2, 3) will now be resiliently received by said magnetic seal arrangement (5), without influencing the function of the seallip (9), thus preventing leakage of the lubricant. |
