A fastening arrangement for a rim of a wheel on a wheel hub of a wheel carrier of a motor vehicle. The fastening arrangement includes a central screw which, on a fastening portion, has an external thread which engages in an internal thread of a step of the wheel hub. A tensioner produces a force-fitting connection between the wheel hub step and the central screw. A locking arrangement prevents unintentional release of the central screw. The locking arrangement has a carrier member and a blocking member, wherein the blocking member is pretensioned in relation to the carrier member by a locking spring member and is displaceable in the axial direction. The blocking member is arranged captively in the carrier member by a securing mechanism.

An apparatus and a method are provided for a centerlock wheel assembly that is configured to improve driving dynamics and provide faster wheel changes. A centerlock adaptor is provided with a plurality of vehicle bolt pattern configurations disposed thereon. A first and threaded abutment are disposed on the centerlock adaptor. A hub adaptor is configured to threadingly engage with an exterior surface of the threaded abutment, thereby retaining a centerlock wheel, for example. Finally, a center cap is provided to threadingly engage with an inner surface of the threaded abutment. For each side of the vehicle, the centerlock assembly features particular threading arrangements so as to retain the centerlock wheel and counteract against various wheel dynamics. A centerlock wrench is provided to tighten and loosen the hub adaptor and center cap.

A wheel nut or axle nut for vehicles, having a body, having a central threaded hole, having a peripheral wall, and having an abutment face at a lower side The nut also has a plurality of wrench faces on the peripheral wall of the nut body for tightening or releasing the nut by a tool which cooperates with the wrench faces. In the body at least one recess is provided in which a sensor element is arranged The sensor element is connected to a wireless interface which is configured to transmit a sensor signal of the sensor element wirelessly to an external reception unit.

An anti-loosening device for a fastening unit of a motor-vehicle wheel is configured to be coupled with a wheel hub. The anti-loosening device is configured to be arranged within the wheel hub along an axial direction, so that a main axis of the anti-loosening device coincides with the wheel axis. The anti-loosening device includes a gear arranged to cooperate with inner teeth of the wheel hub, an elastic element extending axially with respect to the gear, and a coupling element obtained on a sector of said gear, arranged to receive a corresponding fastening. During assembly of the wheelhub assembly, the anti-loosening device is arranged to create a compressed configuration, wherein the gear is decoupled with respect to the inner teeth, and is arranged within a cavity portion obtained on the inner surface of the wheel hub, so as to allow rotation of the anti-loosening device around the main axis.

A hub bearing unit includes a radially outwardly extending flange, a first portion on a first side of the flange and a tubular portion on a second side of the flange. A bearing outer ring surrounds the first portion, and rolling elements are mounted between the first portion and the outer ring. A splined shaft of a constant velocity joint extends into the hub and has a threaded end portion inside the tubular portion. A threaded connector is mounted on the threaded end portion and has a deformable portion configured to be deformed to prevent the threaded connector from being unscrewed. A portion of the tubular portion near the flange includes a radial through hole configured to allow a torque arm of a deformation tool to access and deform the deformable portion.

A screwing tool for an impact wrench for screwing wheel nuts onto and off from a hub body for securing a vehicle wheel, having a main body, which has an open side oriented toward the wheel nuts and which includes a hollow profile. The hollow profile has a tool contour, which is arranged on the open side and can be brought into engagement with a wheel nut contour. At least one peripheral control edge is remote from the open side for releasing a retention element. The control edge has a circular arc region with a constant control edge height h.sub.1 and a cam region with a control edge height h.sub.2 that decreases continuously and then increases again continuously. Height h.sub.1 is equal to h.sub.2 in the respective transition of the circular arc region and the cam region, such that the geometrical shape of an oval is reproduced in cross section.

A wheel hub unit having a central hub and a single central nut that includes respective shaped profiles radially oriented facing towards an axis (A) is provided. The wheel hub unit further includes an anti-unscrewing element interposed between the central hub and the single central nut to prevent accidental unscrewing of the single central nut. The anti-unscrewing element is provided with respective shaped profiles both radially oriented facing away from the axis (A) to engage with shaped profiles.

A wheel fastening system for a wheeled mobile robot includes a chassis, a motor, a wheel, a thrust bearing, a stud, and a screw. The chassis has a base and a cover. The cover covers the base. The motor is disposed in the chassis. The motor has a shaft. The wheel has a hub by which the wheel is centered on the shaft of the motor. The thrust bearing is an interference fit between the wheel and the chassis and provides axial support for the wheel. The stud passes through the hub of the wheel to couple to the shaft of the motor. The screw is coupled to the stud, and is clamped between the base and the cover of the chassis. The stud and the screw prevent the wheel from radially shifting relative to the shaft of the motor.

A wheel fastening system for a wheeled mobile robot includes a chassis, a motor, a wheel, a thrust bearing, a stud, and a screw. The chassis has a base and a cover. The cover covers the base. The motor is disposed in the chassis. The motor has a shaft. The wheel has a hub by which the wheel is centered on the shaft of the motor. The thrust bearing is an interference fit between the wheel and the chassis and provides axial support for the wheel. The stud passes through the hub of the wheel to couple to the shaft of the motor. The screw is coupled to the stud, and is clamped between the base and the cover of the chassis. The stud and the screw prevent the wheel from radially shifting relative to the shaft of the motor.

A wheel nut or axle nut for vehicles, having a body, having a central threaded hole, having a peripheral wall, having an abutment face at a lower side, wherein the nut also has a plurality of wrench faces on the peripheral wall of the nut body for tightening or releasing the nut by a tool which cooperates with the wrench faces. In the body at least one recess is provided in which a sensor element is arranged, wherein the sensor element is connected to a wireless interface which is configured to transmit a sensor signal of the sensor element wirelessly to an external reception unit.