| 摘要 |
Swivel motors have a large number of tightness problems on the inside, in particular in a broad operating temperature range. Therefore, to improve the tightness over a temperature range of -40° C. to +130° C., a sealing device ( 20 ) is provided with an inner soft sealing element ( 20 ) and a plurality of outer rigid sealing elements ( 21, 22, 23, 24 ). The soft sealing element ( 20 ) and the rigid sealing elements ( 21, 22, 23, 24 ) are undetachably connected to one another. The circumferential sealing surfaces of the rigid sealing elements ( 21, 22, 23, 24 ), in the unloaded state, close flush with the sealing surface of the soft sealing element ( 20 ). The rigid sealing elements ( 21, 22, 23, 24 ) are spaced apart from one another by at least one radial compensating groove ( 25 ) and at least one axis-parallel compensating groove ( 26 ). The compensating grooves ( 25, 26 ) are arranged on both sides of the sealing device, such that the compensating grooves ( 25, 26 ) on one side are not overlapped by the compensating grooves ( 25, 26 ) on the other side.
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