A wheel bearing for a motor vehicle is provided with an outer ring, an inner ring arranged at least partially inside the outer ring, and with a longitudinal axis extending in the axial direction of the outer ring and of the inner ring from a vehicle inner side to a vehicle outer side. The inner ring is provided with a flange section on its end facing the vehicle inner side having a first section at the point that is farthest from axial center of the outer ring, and with a second section which forms a contact surface for attaching a brake disk. The flange section is formed stepped in such a way, so that the contact surface for attaching the brake disk is arranged offset relative to the section of the flange section at the farthest point from the axial center of the outer ring in the axial direction toward the vehicle inner side, and so that an at least a partially circumferential projection is located on the side opposite the contact surface for attaching the brake disk.

A tandem ball bearing, including: an axis of rotation; outer and inner races; a cage radially disposed between the inner and outer races and including a surface, the surface facing at least partially in a first axial direction and bounding a portion of the cage extending furthest in the first axial direction; a first roller ball disposed in the cage and radially disposed between the inner and outer races; a second roller ball disposed in the cage radially outwardly of the first roller ball; and a channel bounded by the inner race and the cage and including an opening facing in the first axial direction and bounded by the inner race and the first surface of the cage. A first line, in a second axial direction, opposite the first axial direction, passes through in sequence: the cage; the channel; the inner race; and the first roller ball.

A tandem ball bearing, including: an axis of rotation; outer and inner races; a cage radially disposed between the inner and outer races and including a surface, the surface facing at least partially in a first axial direction and bounding a portion of the cage extending furthest in the first axial direction; a first roller ball disposed in the cage and radially disposed between the inner and outer races; a second roller ball disposed in the cage radially outwardly of the first roller ball; and a channel bounded by the inner race and the cage and including an opening facing in the first axial direction and bounded by the inner race and the first surface of the cage. A first line, in a second axial direction, opposite the first axial direction, passes through in sequence: the cage; the channel; the inner race; and the first roller ball.

To provide a rolling bearing having excellent rust prevention capability and capable of being used for a long period of time in a highly corrosion environment. A rolling bearing 1 utilized for a power generator which generates power from natural energy or for generator equipment has one or more bearing members which form the bearing having a rust prevention film formed in a predetermined region of a surface of a base material. The rust prevention film is formed by a porous film with a sacrificial anode action against the base material in the whole of the predetermined region. The porous film in a part or the whole of the predetermined region is subjected to sealing treatment which impregnates the porous film with a sealing treatment agent from a surface of the porous film. A surface of a sealing treatment body obtained from the porous film subjected to the sealing treatment is subjected to first coating treatment which coats the surface of the sealing treatment body with epoxy resin coating. A coated surface formed by the first coating treatment is subjected to a second coating treatment which coats the coated surface with urethane resin coating. The sealing treatment agent is formed by diluting the epoxy resin coating at a dilution rate of between 15 and 25%.

A bearing system includes: a rotatable shaft, a circumferential channel in the shaft with an axially extending profile surface at least part of which is inclined relative to the shaft axis; a bearing, around the shaft in use; a split ring in the circumferential channel in contact with the inclined profile surface, the split ring includes a first part having an outer diameter, and a second part having a greater outer diameter than the first part to provide a thrust surface; a collar, including an internal bore to accommodate the first part of the split ring in use; and a bearing locator for exerting an axial locating force between the split ring and the bearing to locate the bearing on the shaft. An axial thrust load exerted on the split ring by the shaft is transmitted to the collar by the thrust surface, and the split ring is urged along the inclined profile surface so as to produce a radial load on the split ring which is resisted by the collar.

Provided in one embodiment of the present invention is a bearing assembly comprising: an outer ring in which a hollow is formed and which has a protrusion protruding toward a central direction along the inner circumferential surface and a first ball contact portion and a second ball contact portion that are formed by the protrusion; an inner ring having a third ball contact portion on the outer circumferential surface and forming a first track portion and a second track portion by being inserted into the hollow; and at least one bearing ball disposed between the outer ring and the inner ring to rotatably connect the outer ring and the inner ring, wherein the bearing balls are arranged in multiple rows in the first track portion and the second track portion and are configured to contact each of the ball contact portions.

In a thrust washer for the axial securing of rolling elements of a bearing, and a gear mechanism including a thrust washer, the thrust washer is arranged as a circular disk, which has an axially protruding, in particular radially outer, projection. The circular disk has a recess, which is disposed out of center, i.e., the center point of the, e.g., circular recess thus particularly being set apart from the center axis and/or from the center point of the circular disk. The projection may have an annular shape, and the ring axis is set apart from the center point of the, e.g., circular recess.

A bearing device (1) for a vehicle wheel provided with: an outer member (2); and an inner member comprising a hub wheel (3), and at least one inner wheel (4) press-fitted into the small-diameter ridge (3A) of the hub wheel (3); wherein a belt-shaped part (2F) that radially protrudes by a protrusion amount (P1) is formed over a prescribed width (W1) in the outer peripheral surface of the outer member (2) so that at least part of the belt-shaped part (2F) radially overlaps the outside rolling surface (2D) which is on the vehicle-wheel-attachment-flange-facing side of the outer member (2). The present invention addresses the problem of providing a bearing device for a vehicle wheel in which the amount of deformation in an opening of an outer member can be reduced and decreases in rolling fatigue service life can be prevented while keeping overall weight increase to a minimum.

A rolling-element bearing transmission includes a rotor configured to rotate a shaft relative to a stator and a rotatable output ring that includes a first rolled-on surface element. The shaft includes at least one second rolled-on surface element, and the stator includes a third rolled-on surface element. First and second pluralities of rolling elements are located between the shaft and the stator and between the shaft and the output ring. Also, a transmission mechanism transmits a rotary motion of the shaft to the output ring with a speed reduction such that the output ring rotates at a lower speed than the shaft.

A centrifugal pump includes at least one impeller and a distribution arrangement. The at least one impeller is driven by a shaft. The shaft is rotatably supported by bearings. The distribution arrangement is immersed in a lubricating means. The distribution arrangement is operatively connected to the shaft. The distribution arrangement is configured as a structure formed of at least two elements.