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.

In order to effect a seal a porous material which comprises one side of two opposing surfaces is used to restrict and evenly distribute externally pressurized gas, liquid, steam, etc. between the two surfaces, exerting a force which is opposite the forces from pressure differences or springs trying to close the two faces together and so may create a non-contact seal that is more stable and reliable than hydrodynamic seals currently in use. A non-contact bearing is also disclosed having opposing surfaces with relative motion and one surface issuing higher than ambient pressure through a porous restriction, wherein the porous restriction is part of a monolithic porous body, or a porous layer, attached to lands containing a labyrinth, the porous restriction and lands configured to not distort more than 10% of a gap created from differential pressure between each side of the porous restriction.

A seal assembly for sealing a grease lubricated large rolling-element bearing includes a radial shaft seal having at least one seal lip configured to sealingly abut against a shaft to seal a bearing interior and substantially prevent a grease discharge from the bearing and a grease flow regulation device, such as an annular pumping ring, for regulating a grease pressure at the at least one seal lip, the grease flow regulation device being mounted adjacent to the radial shaft seal at a side of the radial shaft seal that is intended to face the bearing interior in an installed state.

A rolling bearing includes an outer bearing race and an inner bearing race defining a bearing space therebetween. Rolling elements are mounted in the bearing space. A seal device is at one axial opening of the bearing space and includes a metal ring member with through holes configured such that lubricating oil can pass through the through holes and solid foreign substances cannot pass through the through holes. One of the outer bearing race and the inner bearing race is stationary, and the other is rotatable. The metal ring member is in engagement with the stationary bearing race. A metal or resin sub-ring member, which is a separate member from the metal ring member, is fixed to the rotatable bearing race. Between the metal ring member and the metal or resin sub-ring member, a gap is defined which constitutes a labyrinth seal structure.

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.

It is an object of the present invention to more reliably prevent foreign matter from floating in the bearing space of a rolling bearing, while maintaining lubrication performance in the rolling bearing. In order to achieve this object, a rolling bearing is provided which includes an outer race, an inner race, rolling elements mounted between the outer race and the inner race, a seal ring formed with an oil passage hole, and covering at least one of the axial end openings of the bearing space of the bearing, a filter mounted to the seal ring so as to cover the oil passage hole of the seal ring, and configured to catch foreign matter contained in lubricant oil, and a magnetic member mounted axially inwardly of, and adjacent to, the filter, and configured to attract foreign matter to the magnetic member due to the magnetic force of the magnetic member.

A cap of a linear guide device includes a receiving part configured to receive hitting of a hitting jig, a fitting part extending from the receiving part, having an outer diameter to be an interference with the counterbore part, and being press-fitted into the counterbore part, a foreign material receiving groove arranged at an outer circumference of the fitting part, and configured to receive a foreign material generated from the fitting part when the cap is hit into the counterbore part, and a gas discharge groove extending to reach an inside of the counterbore part from the foreign material receiving groove, with the fitting part being press-fitted into the counterbore part at the outer circumference of the fitting part, and configured to discharge a gas in the inside of the counterbore part to a foreign material receiving groove side.

A seal assembly including at least one conduit configured to allow a medium to flow therethrough, an annular retaining means operably coupled to the conduit, and an annular resilient seal member disposed in the annular retaining means. A method of sealing a dispensing system containing a food product creating a food product pressure, wherein the dispensing systems includes a drive shaft operably coupled to a seal assembly, the seal assembly including an annular resilient seal member disposed in an annular retaining member, the annular retaining member being operably coupled to at least one conduit, the method including the steps of: dispensing a medium through the at least one conduit to enter the annular resilient seal member to create a seal pressure greater than or equal to the food product pressure.

Bearing arrangement of a wind turbine, including a bearing with an outer ring and an inner ring and a lubrication fluid provided between both rings, and at least one sealing means arranged at each side of the bearing for sealing the gap between the outer and the inner ring, whereby each sealing means is fixed to one ring and contacts the other ring with a flexible lip-like sealing element, wherein a pressure device for at least temporarily providing a gas overpressure in the sealed gap for increasing the contact load of the lip-like sealing element to the ring is provided.

A steering actuator for rear axle steering of a motor vehicle has a spindle drive (5) which comprises pushrods (9) which are connected to a threaded spindle (16) and which are mounted in a housing (6) by means of plain bearings (18), allowing the passage of air, and are connected at each end thereof to an attachment element (12) provided for coupling to a chassis suspension arm, wherein a gaiter (19, 20) is connected on the one side to the housing (6) and on the other side to one of the attachment elements (12) in each case. Each plain bearing (18) is designed as a bearing allowing one revolution of the threaded spindle (16), wherein at least one longitudinal groove (21) abuts one guide bush (23) of the plain bearing (18).