A vehicle may include a flutter resistant caster. The vehicle may include a frame, a drive wheel coupled to the frame, a caster housing coupled to the frame, a caster, a locking element, a first bearing, and a biasing element. The caster housing may include an opening. The caster may include a caster wheel and a caster stem extending through the opening in the caster housing. The caster stem may be configured to rotate relative to the caster housing. The locking element may be coupled to the caster stem. The first bearing may be coupled to the caster stem. The biasing element may be coupled to the caster stem. The biasing element may be configured to exert a force on the first bearing.

When the compressed air is not applied, an inclined surface, which is positioned at an upstream side with respect to the supply direction of the compressed air, of the lip part is in contact with the inclined surface of the inner ring. When the compressed air is applied, a contact area between the inclined surface, which is positioned at the upstream side with respect to the supply direction of the compressed air, of the lip part and the inclined surface of the inner ring becomes smaller, as compared to when the compressed air is not applied.

A bearing assembly, such as for a wind turbine or a tidal turbine including a tower and a nacelle, includes a lower part that is attachable to the tower, an upper part that is attachable to the nacelle, a bearing that rotatably couples the lower part to the upper part to allow rotation of the nacelle with respect to the tower, and a brake mechanism configured to selectively prevent relative rotation of the upper part and the lower part. The brake mechanism includes a brake disc and a brake caliper.

When compressed air does not act, a seal member is in contact with an outer periphery of an inner ring. When the compressed air acts, a contact area between the seal member and the outer periphery of the inner ring is reduced, as compared to when the compressed air does not act. Accordingly, it is possible to provide an air turbine bearing unit capable of promptly stopping rotation.

The invention relates to a drive mechanism (1) for rotatably coupling a first system part or machine part, preferably an assembly (A), to a base, pedestal or frame or to another system part or machine part, for example for rotary positioning during the processing of large workpieces or during the moving of loads, which drive mechanism comprises two ring-shaped connecting elements (3, 4) each having at least one planar connecting surface (5, 6) and fastening means (7, 8) that are arranged distributed in a crown shape therein and effect connection to different system parts or machine parts or the like, said two connecting elements (3, 4) being arranged concentrically with each other and radially one inside the other with a gap-shaped interspace (9) in which are disposed one or more rows of rolling elements (14, 15, 16), each row whereof rolls between two respective raceways (17, 18) on the two connecting elements (3, 4), thus enabling same to rotate relative to each other, at least one connecting surface (5, 6) and at least one raceway (17, 18) being formed by machining or shaping a common base body. The invention is characterized in that at least one fully circumferentially extending row of magnets (40) is arranged inside the gap (9) on one connecting element (3, 4) and at least one fully circumferentially extending row of coils (38) is arranged directly opposite said magnets on the other connecting element (4, 3). According to the invention, at least one fully circumferentially extending row of magnets is arranged inside the gap on one connecting element and at least one fully circumferentially extending row of coils is arranged directly opposite said magnets on the other connecting element.

A bearing configuration for the rotational mounting of a component provided for rotational movement includes a positionally fixed sleeve on which the component is rotatably mounted by one or more bearing elements or a plain-bearing. A pressure element is provided in the interior of the sleeve for readily expanding the sleeve and placing the sleeve in frictional contact with the component which is spaced apart from the sleeve by an air gap. A medical examination device having the bearing configuration is also provided.

The invention is directed to a wind power plant having a rotor mounted rotatably about an axis directed approximately in the wind direction, and having at least two mutually concentric annular elements for connection to oppositely rotatable system components of the wind power plant, one of which comprises means for connection to the rotor of the wind power plant or to a drive shaft of a gearbox coupled thereto; at least one element having a freewheel characteristic is disposed between the two connection elements and together with them forms a freewheel, at least one connection element being provided with at least one integrated raceway for a row of rolling bodies rolling thereon.

A self-governing bearing assembly is disclosed. The self-governing bearing assembly includes a stator and a rotor. The stator includes a brake contacting surface. The stator is one of an outer ring and an inner ring. The rotor includes the other of the outer ring and the inner ring, brake pads, and a circular spring. The brake pads are positioned radially from the brake contacting surface and adapted to rotate with the other of the outer ring and the inner ring. Each of the brake pads includes a pad retention slot. The circular spring is positioned within the pad retention slot of each of the brake pads. The bearing elements are axially aligned with a first bearing portion of the stator and a second bearing portion of the rotor. The bearing elements are adapted to rotationally support the rotor relative to the stator.

A rotary joint which, in order to limit the mutual rotation of the outer bearing ring (2) with respect to the inner bearing ring (2), is provided with a raceway (11), which is limited by one or two stops (14) and in which a projection connected to the outer bearing ring engages. In order to ensure that a rotation greater than 360° is possible, the raceway is of helical design.

A steering shaft assembly includes a male shaft having a plurality of teeth extending radially outwardly from a portion of the male shaft. The steering shaft assembly also includes a female shaft receiving a portion of the male shaft and fixed to the male shaft in a rotational direction, the male shaft axially moveable relative to the female shaft, the female shaft having an end portion and a body portion, wherein the end portion of the female shaft has an end wall thickness that is less than a body wall thickness of the body portion, the end portion curved radially inwardly to define a hard stop position during axial movement of the male shaft. An end of the plurality of teeth of the male shaft contact the curved end portion of the female shaft at the hard stop position.