LUBRICATION SEAL AND WIND TURBINE WITH LUBRICATION SEAL

摘要

The invention concerns a lubrication seal such as an oil seal for providing a lubrication barrier to confine lubrication in a bearing (9) with a first bearing (17, 25) ring and second bearing ring (16, 23), comprising a support ring (14) that rotates with one of the bearing rings, mounted in the support ring (14) are a first seal ring (21) and a second seal ring (20) which seal rings are suitable for forming the lubrication barrier with a sealing surface (28, 29) that rotates with the other bearing ring and which support ring (14) is displaceable from a first sealing position in which the first seal ring forms the lubrication barrier with a first sealing area (28) and the second seal ring does not engage the sealing surface to a second sealing position in which the second seal ring forms the lubrication barrier. In accordance with the invention the sealing surface comprises a second sealing area (29) that only cooperates with the second seal ring (20) after the support ring ('14) is displaced into the second sealing position.