An assembly has a radial ball bearing including a bearing inner ring, and a rotatable shaft with a shaft end region with a bearing seat. The bearing seat has a shoulder on one side, on which the bearing inner ring of the radial ball bearing is seated for supporting the shaft. The bearing seat is shortened in the longitudinal direction relative to the radial ball bearing, and extends toward a height of the radial ball bearing. The bearing seat terminates at a distance (L) from an orthogonal projection from the proximalmost points of a distalmost row of balls onto the bearing seat surface such that L=k*D, wherein k is in a range between 0.7 and 0.5.

A rolling bearing, in particular a ball bearing, in particular for use in a surgical instrument, which is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the rolling bearing. A sleeve, in particular for use in a surgical instrument, is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the sleeve. A surgical instrument, in particular a hand-held milling cutter, includes at least one ball bearing and at least one sleeve, each having a respective method of production.

A method for machining ribs or grooves on a workpiece such as a shaft or an air or gas axial bearing intended to be rotated about a longitudinal axis of a centrifugal compressor. All of the ribs or grooves are obtained at once by the machining tool on a workpiece portion driven such that it rotates, by moving the workpiece or the tool holder in a longitudinal machining direction, the machining tool moving back and forth with a machining position in contact with the workpiece and a position wherein it is not in contact with the workpiece from the start to the end of the workpiece portion. The back-and-forth movements of the machining tool are synchronised with the sinusoidal program set up in the machining unit, as well as with the desired, programmed arrangement of the ribs or grooves to be produced on the workpiece portion.

Bearing component providing unaffected material that has a surface, which has been subjected to a hard machining process during where the temperature of the surface did not exceed the austenitizing temperature of the unaffected material. The surface of the bearing component includes a white layer formed during the hard machining process. The white layer has a nano-crystalline microstructure that includes grains having a maximum grain size up to 500 nm. The white layer is located directly adjacent to the unaffected material of the bearing component, where no dark layer is formed during the hard machining process.

Provided is a method of manufacturing a wheel bearing apparatus including an outer ring, a rolling element, a hub spindle, and an inner ring member. The hub spindle is disposed inward of the outer ring in a radial direction via the rolling element. The inner ring member fitted on the hub spindle and is secured by a clinched portion. The clinched portion is formed by clinching a spindle end portion of the hub spindle outward in the radial direction. The method includes: plating a predetermined area including the spindle end portion of the hub spindle; removing a plating of the spindle end portion of the predetermined area; and clinching the spindle end portion to form the clinched portion after removing the plating.

A method for surface treatment of a workpiece includes providing the workpiece with hardened workpiece surface, clamping the workpiece, removing material from the hardened workpiece surface with a material removal tool to produce a machined surface with first machining tracks, and rolling the machined surface with a rolling tool by overlapping the first machining tracks to produce a rolled surface with second machining tracks. A distance between the material removal tool and the rolling tool measured in an axial direction of the workpiece is varied in an oscillating manner. The material removal tool may be advanced in the axial direction at a constant speed and the rolling tool may be advanced in the axial direction at an oscillating speed, or the rolling tool may be advanced in the axial direction at a constant speed and the material removal tool may be advanced in the axial direction at an oscillating speed.

A method for manufacturing a sensor bearing unit includes providing a bearing having a first ring and a second ring capable of rotating concentrically relative to one another, and an impulse ring provided with a target holder secured into a groove made in a cylindrical surface of the first ring, and with a magnetic target mounted on the target holder. The method including applying on a first ring blank a heat-treatment in which the metal is hardened, hard machining the groove in the cylindrical surface of the first ring blank after the step of heat treating, and introducing and securing the target holder of the impulse ring inside the groove of the machined first ring. Also a sensor bearing unit.

A rolling-element bearing includes first and second rings having axial and radial raceways and a row of first radial rolling elements between the axial raceways. At least one row of axial rolling elements is located between a first radial raceway of the first ring and a first radial raceway of the second ring and radially located between an axial guiding face of the first ring and an axial guiding face of the second ring. The axial rolling elements are mounted in the pockets of a cage having a plurality of cage segments, and at least one second radial rolling element is circumferentially interposed between two adjacent cage segments of the plurality of cage segments and radially interposed between the axial guiding faces.

A thin-wall bearing, including an outer ring and an inner ring. The inner ring surface of the outer ring is provided with an outer ring raceway, and the outer ring surface of the inner ring is provided with an inner ring raceway. A steel ball and a cage for installing the steel ball are arranged between the outer ring raceway and the inner ring raceway. A plurality of screw holes are evenly distributed in a circle around the side wall of the outer ring, and knurled screws are provided in the screw holes, respectively. The fit between the knurled screw and the screw hole 10-Φ9 is to be N6/h5. The radial clearance of the thin-wall bearing is greater than or equal to 0.01 but less than or equal to 0.09. A processing method of the thin-wall bearing.

A roller for a roller bearing has a first end surface and a second end surface and a rolling surface between the first and second end surfaces. The first end surface has an at least partially ground profile having a non-constant curvature such as a logarithmic profile. Also, an assembly including a grinding tool and a roller with an end surface having a ground non-constant curvature.