A cage (110) for a roller thrust bearing (100), including a first cage half (120) including an annular portion (122), a first flange (130) extending axially from an inner peripheral edge (124) of the annular portion, and a second flange (132) extending axially from an outer peripheral edge (126) of the annular portion, and a second cage half (140) including an annular portion (142), a first flange (150) extending axially from one of an inner peripheral edge (144) and an outer peripheral edge (146) of the annular portion, a second flange (152) extending both axially and radially from the other of the inner peripheral edge and the outer peripheral edge, the second flange including a first flange portion (154) and a second flange portion (156), wherein the second flange portion of the second flange of the second cage half is disk-shaped and is disposed in a plane that is transverse to a longitudinal center axis of the roller retainer cage.

A method of creating a roller bearing, comprising re-shaping a bearing ring blank utilizing cold impact intrusion, wherein the bearing ring blank includes a surface profile that forms at least one contour section within a contact side of the bearing ring upon the re-shaping, and wherein the contact side is configured to contact a support structure.

An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.03 mm is 700 MPa to 1600 MPa.

The present invention relates to a rotor shaft and a method for producing a rotor shaft.

Methods and apparatus for manufacturing a circular laminated component are disclosed herein. In one embodiment, a method comprises stamping an inlet stock of material to form a line of arc segments, the line of arc segments having: a plurality of notches along a first edge; a first longitudinal end; and a second longitudinal end opposite the first longitudinal end; wrapping the line of arc segments to form a circular segment having the first edge along an inner-circumferential diameter of the circular segment; joining the first longitudinal end to the second longitudinal end to form a circular laminate layer; and stacking a plurality of circular laminate layers to form a laminate disc.

A thrust roller bearing includes rollers, a cage that holds the rollers in a manner that allows the rollers to roll, and a washer including a raceway surface on which the rollers roll. The washer includes a raceway portion that has the raceway surface and is disposed on a first axial side of the cage, and hook portions that extend toward a second axial side. Each of the hook portions includes a first projecting portion that extends toward the second axial side from the raceway portion, a second projecting portion that extends radially toward the rollers and toward the second axial side from an end portion of the first projecting portion on the second axial side, and a third projecting portion that further projects radially toward the rollers from an end portion of the second projecting portion on a side opposite to the first projecting portion.

This hollow shaft member 10 includes paired diameter-reduced sections 11 respectively formed at both shaft ends of a hollow shaft-like tubular material by performing swaging processing on both the shaft ends, and an intermediate section 12 located between the paired diameter-reduced sections, and having an outer diameter larger than an outer diameter of the paired diameter-reduced sections. Shapes of connection boundaries between the intermediate section 12 and the diameter-reduced sections 11 are formed as perpendicular step-shaped sections 13 stepped substantially perpendicular to an axial direction, and the perpendicular step-shaped sections 13 are formed by the swaging processing.

Rings for a rolling bearing are disclosed, wherein the rings define a primary axis (A). The ring may include a ring formed as a hollow ring having a hollow chamber encircling the primary axis (A). A wall of the hollow ring may be of one-piece and/or seamless design in an axial section along the primary axis (A). The ring may be a bearing ring configured for rolling contact with rolling elements. In one example, the wall includes a raceway section in the wall for rolling contact with the rolling elements, a bearing bottom section for supporting the ring, two lateral supporting wall sections, and two connecting sections for connecting the two lateral supporting wall sections to the raceway section.

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a first cylindrical portion (36) extending in a direction of a rotation axis (12); a first disc portion (31) continuous with the first cylindrical portion (36) and extending in a radially outward direction; and a second cylindrical portion (37) continuous with the first disc portion (31) and extending in the direction of the rotation axis (12). The first cylindrical portion (36), the first disc portion (31), and the second cylindrical portion (37) are formed in an area located radially inside the pockets (21). The height (H36) of the first cylindrical portion (36) in the direction of the rotation axis is smaller than the height (H37) of the second cylindrical portion (37) in the direction of the rotation axis.

A raceway element for a rolling-element bearing, the rolling-element bearing having an inner ring, an outer ring, and a plurality of rolling elements that are disposed between the inner ring and the outer ring. The raceway element is configured as an inner ring or as an outer ring, or is configured to be attachable to an inner ring or outer ring of the bearing, wherein at least one surface of the raceway element is configured as a raceway for the rolling elements. The raceway element is formed from a sheet metal panel having at least one recess formed in the surface configured as the raceway.