The present invention provides a composite processing method and device for a texture on an inner surface of a bearing shell of a radial sliding bearing. A surface of a workpiece to be processed is processed by laser to obtain a micron-level texture, an obtained workpiece with the micron-level texture on a surface is placed on a compression device, and the workpiece with the micron-level texture on the surface is subjected to an electro-deposition reaction to obtain a workpiece with a nano-level texture on a surface. The processing device includes an inner spin-printing electrode electrochemical deposition system, a laser irradiation system and a motion control system. The inner spin-printing electrode electrochemical deposition system includes the inner spin-printing electrode, a direct current power supply, the bearing shell and a compression roller.

A bearing system and method may include a bearing element that may have a first surface. A mating element may have a second surface that may face the first surface. A fluid film interface may be defined between the first and the second surfaces. The mating element may rotate about an axis and relative to the bearing element. An axial direction may be defined parallel to the axis. A radial direction may be defined perpendicular to the axis. The first surface may have a profile that may vary in the axial direction and that may varies in the radial direction. The profile may direct a fluid present in the fluid film interface in a direction or directions having circumferential and/or axial components.

A turbocharger and a method of manufacturing a floating bush with which noise can be reduced, and the rotation speed can be increased. In a turbocharger in which a rotating shaft having a circular cross-section and connecting a turbine rotor and a compressor rotor is supported in a freely rotatable manner, at two axially separated positions via floating bushes, by an inner circumferential surface disposed so as to surround the rotating shaft in a bearing housing, an inner circumferential surface of each of the floating bushes has a non-circular shape in which the curvature of the cross-sectional shape varies in the circumferential direction.

A method for producing a metallic component, The method includes the method steps of first machining (103) the component and thereafter cooling (105) the component from a first temperature down to a lower second temperature. The cooling (105) occurs after the machining (103) of the component.

A bearing includes an inner ring, an outer ring, and a plurality of rollers. The rollers separate the inner ring from the outer ring. The outer ring has an outer radial surface with a circumferentially continuous portion and a plurality of axial projections extending from the circumferentially continuous portion. To improve the security of the press fit connection between outer ring and a housing, surfaces of the outer ring which contact the housing are treated with a laser etching process. The laser etching may be applied to the circumferentially continuous portion and/or to the outer surface of the axial projections. The laser etching process removes a small amount of material from the surface, creating valleys. The removed material is clumped on its surroundings, building peaks. The peaks and valleys increase the friction between the outer ring and the housing, reducing the chance of failures.

A method of forming a bearing cage segment includes determining a path of a periphery of the bearing cage segment along a metal sheet, punching a plurality of openings in the metal sheet inside the path to form a plurality of pockets separated by a plurality of bridges and separating the bearing cage segment from the metal sheet at the path. The separating includes laser cutting first and second joint edges at a first end of the row and third and fourth joint edges at a second end of the row, where the first joint edge is spaced from the second joint edge in a length direction of the bridges and the third joint edge is spaced from the fourth joint edge in the length direction of the bridges.

A track roller shaft comprises a body including a revolved surface defining an axis of rotation, a radial direction, and a circumferential direction disposed about the axis of rotation. The body also defines a proximate axial end disposed along the axis of rotation, a radially extending hole that is disposed axially adjacent to the proximate axial end, and a guide member receiving pocket disposed axially further away from the proximate axial end than the radially extending hole.

A low surface-roughness part is formed at a first tapered part, as a result, the roughness of an opening-edge of a groove part of an internal spline part that opens at the first tapered part is reduced, and surface pressure applied by the opening edge to a tooth of an external spline part can be reduced. As a result, the opening edge of the groove part of the internal spline part can be kept from digging into the tooth, and variation, between products, in the insertion load of a second shaft part can be suppressed.

There is disclosed a bearing housing for a turbocharger. The bearing housing comprises a body and a mounting flange. The body is configured to receive one or more bearings. The one or more bearings are configured to support rotation of a shaft about an axis. The mounting flange extends around the body. The mounting flange comprises a plurality of bores, a first face and a plurality of cavities. The plurality of bores configured to receive a fastener therethrough. The first face is configured to engage a corresponding mounting flange of a turbine housing. The plurality of cavities are in communication with the plurality of bores. The plurality of cavities are axially recessed relative to the first face.

The bearing provides a first ring and a second ring centered on an axis, each of the first and second rings being provided with an outer cylindrical surface, with an inner cylindrical surface, and with lateral faces that axially delimit the outer and inner cylindrical surface. One of the inner and outer cylindrical surfaces and/or one of the lateral faces of the first ring includes a textured area provided with a groove extending circumferentially and with two protrusions disposed one on each side of the groove and extending along the groove.