A vehicular wheel hub unit includes a radially outer bearing ring, a radially inner bearing ring, and a plurality of rolling elements supporting the inner bearing ring and the outer bearing ring for relative rotation. The inner bearing ring has an axially facing metal coupling surface configured to frictionally engage a connecting surface of an element, such as a bell of a constant velocity joint, adjacent to the inner bearing ring, and the coupling surface includes at least one first region having a plurality of coupling surface ablations configured to affect an amount of friction between the coupling surface and the connecting surface. Also a method including ablating at least a first region of a coupling surface of an inner bearing ring.

A rolling bearing, in particular of a wheel hub bearing unit for vehicles, and an associated method for reducing the friction between the rolling bodies of the bearing and respective raceways for the rolling bodies formed on the inner and outer rings of the rolling bearing. The rolling bodies and the raceways have a surface topography of a predetermined thickness, the rolling bodies and/or the raceways are coated with a layer of black oxide, and a lubricating fluid with predetermined physical/chemical characteristics is inserted between the inner and outer rings and in contact with the rolling bodies and with the raceways.

A wear resistant bearing system includes an inner member that has an internal core and a bearing surface which has a 50 Rockwell C scale hardness or greater. The inner member has a chemical composition that is uniform throughout the internal core and the bearings surface. The wear resistant bearing system includes an outer member that partially surrounds the inner member and includes a receiving surface that has liner system adhered thereto. The liner system includes a wear resistant matrix that has one or more reinforcing fiber systems and has one or more lubricative fibers system dispersed in the wear resistant matrix. The liner system has a wear surface that has portions of both the reinforcing fiber system and the lubricative fiber system. The wear surface is continuous.

Disclosed is a machining unit for machining a bearing component. The machining unit includes an industrial robot and at least one abrasive tool. The at least one abrasive tool is coupled to the industrial robot and a controller. The controller is configured to control a movement path of the at least one abrasive tool such that a contact of the abrasive tool is in the normal direction to a surface of the component.

A shell type roller bearing includes a shell outer ring that includes a cylindrical portion (12) and a flange (13) extending radially inward from one axial end of the cylindrical portion and that is made of an austenitic stainless steel material. One axial end portion of an inner peripheral surface (16) of the cylindrical portion (12) is a tilted surface (16b), the inner diameter of the tilted surface (16b) is larger than the inner diameter of an axial middle region of the inner peripheral surface (16), and the hardness of the flange (13) is in the range of 300 to 450 HV.

Provided are sliding components capable of obtaining a stable low-friction effect under a wide range of conditions of use. A sliding component has a relatively sliding surface. A base material of one of the sliding components is coated with a graphite film, and the sliding surface of the other of the sliding components is made of the graphite film.