When the compressed air is not applied, an inclined surface, which is positioned at an upstream side with respect to the supply direction of the compressed air, of the lip part is in contact with the inclined surface of the inner ring. When the compressed air is applied, a contact area between the inclined surface, which is positioned at the upstream side with respect to the supply direction of the compressed air, of the lip part and the inclined surface of the inner ring becomes smaller, as compared to when the compressed air is not applied.

A grounding apparatus for an electrical drive assembly configured for conducting an electrical charge and/or voltage from a rotor of an electric motor via a shaft as a first grounding partner to a second grounding partner. The grounding apparatus has: a supporting body device with a connecting section for electrical and mechanical connection to one of the grounding partners, and a supporting section; a contacting device having a contacting section for electrical connection to the other of the grounding partners, the contacting device having an attachment section and being connected to the supporting section of the supporting body device via the attachment section. The grounding apparatus bridges an annular gap between one grounding partner and the other, and the grounding apparatus has at least one opening which forms or helps to form an air passage in the annular gap in an axial direction.

When the compressed air is not applied, an inclined surface, which is positioned at an upstream side with respect to the supply direction of the compressed air, of the lip part is in contact with the inclined surface of the inner ring. When the compressed air is applied, a contact area between the inclined surface, which is positioned at the upstream side with respect to the supply direction of the compressed air, of the lip part and the inclined surface of the inner ring becomes smaller, as compared to when the compressed air is not applied.

A spherical plain bearing includes an outer ring and an inner ring that are each coaxial with a longitudinal axis of the bearing. The outer ring has a first axial outer ring end, a second axial outer ring end, and an interior spherical concave bearing surface extending therebetween. The inner ring has a first axial inner ring end, a second axial inner ring end, and an interior cylindrical bearing surface defining a bore and an exterior spherical convex bearing surface extending therebetween. The exterior spherical convex bearing surface is in interfacial sliding engagement with the interior spherical concave bearing surface. A plurality of circumferential lubrication grooves and one or more curved lubrication channels are in the exterior spherical convex bearing surface. The curved lubrication channels are positioned to intersect each of the circumferential lubrication grooves. A plurality of profiled annular lubrication grooves circumferentially extend into the interior cylindrical bearing surface.

A boot that protects a moveable joint and retains lubricant associated with the joint. The wall of the boot includes a venting aperture that is protected by a surrounding barrier structure.

Disclosed is a sealed bearing arrangement that provides at least a bearing with an outer ring and an inner ring, which are rotatable to each other and form a rolling chamber between each other, in which a set of rolling elements. A lubricant is encompassed in the rolling chamber and the rolling chamber is sealed off from an environment by at least one sealing element. The inner ring, the outer ring and/or the sealing element includes at least one opening for providing a fluid passage through the sealing element. The bearing is arranged in a housing that is adapted to seal off the bearing from an outside environment. A lubricant is encompassed inside the housing. The housing including the at least one opening for providing a fluid passage from the inside of the housing to the outside. The opening is fluid tightly connected to an oxygen removing element and/or to a gas tank, which provides an oxygen poor to free fluid flow to the rolling chamber.

A seal member is provided in which lip wear is suppressed and resistance to muddy water is increased, as well as a bearing device for a wheel, provided with the seal member. An encoder (63) and an elastic member (65) form a labyrinth section (8) between an outer peripheral surface (61a) of a turned-back section (613) and an inner peripheral surface (64a) of an inner fitting section (641). The labyrinth section (8) extends axially outward and radially outward, and an inner peripheral surface (63c) of the encoder (63) that covers an inner peripheral surface (61c) of the turned-back section (613) is sloped axially inward and radially outward.

A gas bearing for a compressor includes a bearing portion and a sealing portion mounted to a bearing housing of the compressor via one or more dampers, and the sealing portion being fixedly connected to the bearing portion, and a vent with an inlet in the bearing. The bearing portion has an inner radial surface for radially supporting a shaft of the compressor. The sealing portion has a sealing surface. The inlet of the vent disposed between the inner radial surface and the sealing surface. The sealing surface and a rotating surface form a path that extends along the sealing surface. The path extending from a pressurized volume of the compressor to the vent, and the pressurized volume containing a fluid.

Provided is a seal arrangement for sealing an internal space between two components mounted for rotation relative to each other, in particular for sealing a wheel bearing. The seal arrangement comprises a first carrier element, which can be connected to the first component, and a second carrier element, which can be connected to the second component. A sealing element is formed on at least one of the carrier elements and rests against the respective other carrier element at least one contact point. It is provided that at least one opening is made in the first carrier element, into which a ventilation element is inserted. It is provided that a receiving space is formed on the ventilation element, which is delimited in the radial direction by a collar on a base body of the ventilation element, wherein a gas-permeable membrane or a porous body is arranged in the receiving space.

A wheel end assembly having a spindle, a hub, and a rotary seal assembly. The spindle defines a spindle air passage, a vent passage, and a spindle hole. The hub defines a hub air passage. The rotary seal assembly fluidly connects the spindle air passage to the hub air passage. The vent passage fluidly connects an inboard cavity to the spindle hole.