A spigot joint part of a wheel hub has a cylindrical outer peripheral surface. The wheel mounting structure includes a collared member having a collar part to be press-fitted into and fixed to the spigot joint part, which is formed at a position away from an end part of the spigot joint part by a predetermined distance to protrude outward in a radial direction of the collared member. An annular protruding part is formed on a part of an inner peripheral surface of a center hole of a wheel to protrude toward a center of the wheel. In a state where the wheel is fixed to the flange part by using hub bolts, a fitting part and the annular protruding part are spigot-fitted. In a state where the hub bolts are removed, the annular protruding part is locked by the collar part.

Systems and related methods related to structures with large-scale rotatable elements. Some of the present systems comprise: a tower; a tower hub coupled to the tower and having a transverse dimension of at least 50 feet; an observation wheel rotatably coupled to the tower and having a central wheel hub; a plurality of roller bearings disposed between the tower hub and the wheel hub to rotatably support the observation wheel relative to the structure, the roller bearings each having a diameter that is less than one quarter of the transverse dimension of the wheel hub.

A housing unit for use in an axle end assembly including first and second housing parts, wherein one of the first and the second housing parts are disposed to be mutually rotatable and define a housing interior space, wherein the first housing part for establishing on a hub has a flange, wherein the second housing part for safeguarding against rotation in relation to a stator of a wheel suspension has an engagement portion, wherein a gear wheel assembly is disposed in the housing interior space to transmit a torque of a driveshaft to the first housing part, wherein one of the first and the second housing parts, when dismantling the housing unit from the wheel suspension, are mutually established that the housing interior space remains closed such that at least 70% of the outwardly protruding faces of the housing unit are closed in a fluid-tight manner.

A hub for partially muscle-powered vehicles, including a hollow hub axle with a cylindrical inner through hole for the passage of a clamping axle, a hub shell rotatably supported relative to the hub axle by two hub bearings, a rotor rotatably supported relative to the hub axle, and a freewheel device with a hub-side freewheel component and a rotor-side freewheel component, each having axial engagement components for engagement with one another. The hub shell is rotatably supported relative to the hub axle in a rotor-side end region by a rotor-side hub bearing, and in an opposite end region of the hub shell by another hub bearing. The hub-side freewheel component is non-rotatably connected with the hub shell. The rotor-side freewheel component is non-rotatably connected with the rotor and is movable in the axial direction relative to the rotor and the hub shell between a freewheel position and an engagement position.

A device for stabilizing pressure inside a gear's housing or a wheel's hub includes a bladder, and a conduit coupled to the bladder and coupleable to a volume containing a lubricant. The bladder includes a chamber having a volume, and is configured such that the chamber's volume increases as a fluid enters the chamber, and decreases as fluid leaves the chamber. The conduit includes a first end positionable adjacent the lubricant containing volume, a second end coupled with the bladder, and a passage between the first and second ends, and is configured to hold fluid disposed in the passage and direct the fluid between the first and second ends. When the conduit is coupled to the lubricant containing volume, the volume of the bladder's chamber, the passage of the conduit and the lubricant containing volume are isolated from the ambient environment.

A manufacturing method of a wheel bearing device, the wheel bearing device including an outer ring member, an inner shaft member that includes a shaft portion that has an inside raceway and a flange portion, a plurality of rolling elements, a seal provided at an end portion of the outer ring member on the first axial side and including an axial lip, and a lip contact surface provided on the side of the inner shaft member and contacted by the axial lip, includes: processing the outside raceway with a distance in an axial direction from a first reference position being managed, a first reference position being set on the outer ring member; and providing the seal at a predetermined position, in the axial direction, of the outer ring member with respect to the first reference position.

A wheelend is provided. The wheelend includes a spacer having a plurality of perforations to place a hub sump in fluid communication with a cavity between the spacer and a spindle to facilitate lubricant flow.

A hub structure includes an axle housing, a hub having an insertion hole in a vehicle width direction through which the axle housing is inserted, and an inner bearing disposed between the hub and the axle housing in the insertion hole and rotatably supporting the hub with respect to the axle housing, and an oil seal disposed between the hub and the axle housing in the insertion hole on an inner side relative to the inner bearing in the vehicle width direction. A spacer is provided between the inner bearing and the oil seal in the insertion hole. The spacer has an outer end surface that is contactable with an inner end surface of an inner race of the inner bearing.

Systems and related methods related to structures with large-scale rotatable elements. Some of the present systems comprise: a tower; a tower hub coupled to the tower and having a transverse dimension of at least 50 feet; an observation wheel rotatably coupled to the tower and having a central wheel hub; a plurality of roller bearings disposed between the tower hub and the wheel hub to rotatably support the observation wheel relative to the structure, the roller bearings each having a diameter that is less than one quarter of the transverse dimension of the wheel hub.

A motor vehicle wheel bearing assembly includes a hub configured to be supported by at least one rolling-element bearing and to provide a seat for a wheel. The hub includes a first hollow-cone-shaped element manufactured from light metal and having a first axial end section having a first diameter and a second axial end section having a second, larger, diameter and at least one bearing raceway or raceway support at the first axial end section. The hub also includes a second element extending radially from an end of the first hollow-cone-shaped element, the second element having a radially inner section and a radially outer section. The second axial end section of the first element is connected to the radial outer section of the second element, for example, at a joint.