Patent ID: 8540433

Claim:
A bearing comprising: an outer ring, a plurality of rolling elements, a two-part inner ring including: a first part having a radially outer surface and an inner bore, the radially outer surface having at least two portions of different diameters axially spaced apart, a second part having a radially inner surface and at least one raceway for rolling elements, the at least one raceway being located on an outer surface, the radially inner surface having at least two portions of different diameters axially spaced apart and substantially mating with the radially outer surface of the first part, a ring shaped element disposed between the first and second parts and at least partly within an axial width of the outer ring and located at an axial end of at least one of the first and second parts; and a cavity located between the first and second parts and at least partly within the axial width of the outer ring, the cavity extending at least partly in a circumferential direction and configured to provide a pressure chamber, the cavity being bounded by a first surface on the first part and a second surface on the second part axially spaced apart, and wherein normal vectors of the first and second surfaces have vector components in axial direction, such that when pressurizing the cavity, a relative axial movement between the first and second parts is accomplished.