Patent ID: 8485734

Claim:
A ball bearing forming an axial-force transmission member, the bearing comprising: an inner ring having an axis of symmetry, an outer ring having an axis of symmetry and being spaced from the inner ring such that a rolling chamber is defined between the two rings, a plurality of balls disposed in the rolling chamber, and a seal configured to insulate the rolling chamber from the bearing exterior, wherein one of the inner ring and the outer ring has a travel track defined by a section of a sphere centered on a first geometric point located on the axis of symmetry of the one ring, the track supporting the seal and having a first radius, and the other one of the inner ring and the outer ring has a sealing zone configured to interact with the seal, the sealing zone being defined by a section of a sphere and generally centered on a second geometric point located on the axis of symmetry of the other one of the inner and outer rings and having a second radius with a value different than a value of first radius, the first and second geometric points being generally superimposed and offset from the series of balls generally along the axis of symmetry of the other one of the inner and outer rings, and a sleeve mounted on the inner ring, being movable in a radial direction relative to the central axis of the inner ring, and configured to transmit an axial force to the inner ring.