Abstract: A contact-free wheel bearing pre-seal between a wheel carrier, on the one hand, and a wheel hub, a wheel bearing, and/or an axle stub, on the other hand. A sealing ring which is fixed to the wheel hub, the wheel bearing, and/or the axle stub and forms a sealing gap together with a mating contour on the wheel carrier or on a component fastened to the wheel carrier. The sealing ring has radial webs between which cells are formed. The cells are each radially delimited on the outside by a retaining wall, which in turn delimits the sealing gap radially on the inside in order, when the sealing ring rotates, to generate a flow opposed to a breaching of the seal in front of and/or in the sealing gap. There is also disclosed a wheel bearing arrangement with such a contact-free wheel bearing pre-seal.

Abstract: A wheel bearing assembly includes a wheel hub having inner teeth, a wheel bearing arranged at the wheel hub, and a constant velocity joint having an axle journal with outer teeth engaged with the inner teeth for torque transmission. A clamping device axially clamps the wheel hub and the wheel bearing against the constant velocity joint so that a bearing inner ring bears against a contact shoulder of the constant velocity joint. A metallic, uncoated friction ring is positioned between the bearing inner ring and the contact shoulder. The friction ring provides a coefficient of sliding friction that is at least 80 percent of a coefficient of static friction for both the bearing inner ring–to–friction ring interface and the friction ring–to–contact shoulder interface.

Abstract: An axially loaded crown gearing system includes a first component with a first crown gear and a second component with a second crown gear in toothing engagement and axially clamped to provide zero-backlash transmission. A snap-on sealing ring surrounds the gears radially, is fixed to one component, and has at least one catch lug that detents in a recess of the other component to establish a pre-assembly condition and preclude tooth-on-tooth assembly. The ring has an end-face circumferential sealing surface that, in the clamped condition, provides axial sealing either (i) against an elastic sealing element that is axially less rigid than the ring or (ii) against a sealing element formed as an axially extending extension of a wheel-bearing seal. The arrangement enables reliable sealing and tolerance compensation while simplifying assembly and protecting the toothing engagement from contamination and corrosion.

Abstract: A snap-on sealing ring for externally sealing a shaft connection includes a plastic base body with a sleeve section and an axially adjoining flange section, and at least one catch lug configured to latch to a first component. A metal insert has an outer ring-disk section, an inner ring-disk section axially offset from the outer ring-disk section, and a sleeve-shaped connecting section that joins the ring-disk sections. The outer ring-disk section is embedded, at least in part, in the flange section. The inner ring-disk section has a smaller inside diameter than the sleeve and flange sections. The connecting section forms, on its radial inner side, a contact surface for pressing onto a shaft section of a second component, while its radial outer side is in contact with the plastic base body. The arrangement provides robust sealing and precise positioning over a wide temperature range.

Abstract: A contact-free wheel bearing pre-seal between a wheel carrier, on the one hand, and a wheel hub, a wheel bearing, and/or an axle stub, on the other hand. A sealing ring which is fixed to the wheel hub, the wheel bearing, and/or the axle stub and forms a sealing gap together with a mating contour on the wheel carrier or on a component fastened to the wheel carrier. The sealing ring has radial webs between which cells are formed. The cells are each radially delimited on the outside by a retaining wall, which in turn delimits the sealing gap radially on the inside in order, when the sealing ring rotates, to generate a flow opposed to a breaching of the seal in front of and/or in the sealing gap. There is also disclosed a wheel bearing arrangement with such a contact-free wheel bearing pre-seal.

Abstract: A spline connection having a hub with a toothing profile on the inner circumference, an axle journal having a toothing profile on an outer circumferential portion, a shoulder for axial support and/or abutment against the hub, and a tensioning device for axially bracing the axle journal with the hub. The hub has a constant toothing profile and the axle journal has a first portion and a second portion with different toothing profiles. The first portion is arranged on the insertion side to be further away from the shoulder than the second portion and has a constant toothing profile with play with respect to the toothing profile of the hub. The second portion is arranged on the shoulder side and has a toothing profile which has reduced tooth spaces compared with the first portion and which is play-free with respect to the toothing profile of the hub.

Abstract: A spline connection having a hub with a toothing profile on the inner circumference, an axle journal having a toothing profile on an outer circumferential portion, a shoulder for axial support and/or abutment against the hub, and a tensioning device for axially bracing the axle journal with the hub. The hub has a constant toothing profile and the axle journal has a first portion and a second portion with different toothing profiles. The first portion is arranged on the insertion side to be further away from the shoulder than the second portion and has a constant toothing profile with play with respect to the toothing profile of the hub. The second portion is arranged on the shoulder side and has a toothing profile which has reduced tooth spaces compared with the first portion and which is play-free with respect to the toothing profile of the hub.

Abstract: A constant-velocity fixed joint includes an outer joint part with ball raceways and an inner joint part with ball raceways which are separated by webs. A cage, which is disposed between the outer joint part and the inner joint part, has windows for holding balls. The inner joint part can be inserted into the cage only when at least one of its webs engages in a window in the cage. As a result of certain ratios of the raceway angle to the web angle, a high resistance to fracturing at large deflection angles is achieved and a weakening at the functional faces of the inner joint part is avoided. The large angle of wrap around the balls at the ends of the raceways is advantageous for the load bearing capacity of the raceways. Due to its simple form, the cage can be manufactured with a small thickness.

Abstract: A constant-velocity fixed joint includes an outer joint part with ball raceways and an inner joint part with ball raceways which are separated by webs. A cage, which is disposed between the outer joint part and the inner joint part, has windows for holding balls. The inner joint part can be inserted into the cage only when at least one of its webs engages in a window in the cage. As a result of certain ratios of the raceway angle to the web angle, a high resistance to fracturing at large deflection angles is achieved and a weakening at the functional faces of the inner joint part is avoided. The large angle of wrap around the balls at the ends of the raceways is advantageous for the load bearing capacity of the raceways. Due to its simple form, the cage can be manufactured with a small thickness.

Abstract: A constant velocity fixed joint includes a joint outer part and a joint inner part with crossed ball raceways. The ball raceways of the joint outer and inner parts form ball raceway pairs and balls are disposed in respective ones of the ball raceway pairs. A cage is held in place at one of the joint parts. Windows in the cage receive the balls. One of the joint parts has a cage guiding surface for axially holding the cage in a first direction. A termination element is provided as a separate element at the one of the joint parts. The termination element has a counterface and the cage is held axially in a second direction opposite the first direction by the counterface of the termination element. The cage guiding surface of the joint part has an undercut-free region toward the termination element.

Abstract: A constant velocity joint has an outer part, an inner part, and a full cage that is accommodated in a self-holding manner between these parts. The cage is formed with windows for holding balls inside races on the outer part and on the inner part. The cage is guided around a common center of curvature via spherical outer surfaces on the outer part and via spherical inner surfaces on the inner part. During assembly, the outer part and the cage can be slid inside one another in the direction of their component axes. This permits a particularly compact design of constant velocity joints with Stuber offset. Special openings on the outer part enable the balls to be inserted when the inner part is already connected to a shaft.

Abstract: A constant velocity fixed joint includes a joint outer part and a joint inner part with crossed ball raceways. The ball raceways of the joint outer and inner parts form ball raceway pairs and balls are disposed in respective ones of the ball raceway pairs. A cage is held in place at one of the joint parts. Windows in the cage receive the balls. One of the joint parts has a cage guiding surface for axially holding the cage in a first direction. A termination element is provided as a separate element at the one of the joint parts. The termination element has a counterface and the cage is held axially in a second direction opposite the first direction by the counterface of the termination element. The cage guiding surface of the joint part has an undercut-free region toward the termination element.

Abstract: A constant velocity joint has an outer part, an inner part, and a full cage that is accommodated in a self-holding manner between these parts. The cage is formed with windows for holding balls inside races on the outer part and on the inner part. The cage is guided around a common center of curvature via spherical outer surfaces on the outer part and via spherical inner surfaces on the inner part. During assembly, the outer part and the cage can be slid inside one another in the direction of their component axes. This permits a particularly compact design of constant velocity joints with Stuber offset. Special openings on the outer part enable the balls to be inserted when the inner part is already connected to a shaft.