Abstract: An actuator assembly includes an actuator with a cylinder-shaped shaft rotatable around an axially extending center axis (A), and the shaft includes an envelope surface. The assembly further provides a fixed, tubular bearing surrounding a section of the shaft, the bearing having an inner surface facing the envelope surface of the shaft so that an interface between the shaft and the bearing is created. The interface provides at least one circumferential groove and at least one complimentary circumferential ridge. The groove is arranged in the one of the envelope surface of the shaft and the inner surface of the bearing and the complimentary ridge is arranged in the other of the envelope surface of the shaft and the inner surface of the bearing.

Abstract: A bearing cage for a roller bearing assembly is provided. The roller bearing assembly includes an outer annular ring, an inner annular ring including an outer radial surface, and a plurality of roller elements. The bearing cage includes an annular body configured to be positioned between the inner annular ring and the outer annular ring and configured to receive the plurality of roller elements. The annular body includes a first end including a first inner radial surface opposite the inner annular ring and a second end including a second inner radial surface opposite the inner annular ring, wherein the annular body extends from the first end to the second end in an axial direction. The annular body includes a first lubricant interface configured to receive oil and defined by the first inner radial surface and a second lubricant interface configured to receive oil and defined by the second inner radial surface.

Abstract: A bearing arrangement of an electrical machine is provided that includes a drive shaft extending through a housing, the bearing arrangement including a front-end bearing arranged about a front end of the drive shaft, and a back-end bearing arranged about an opposite end of the drive shaft, wherein a bearing includes a plurality of bearing pads arranged in an annular space between the drive shaft and the housing, and wherein at least one bearing includes an uneven distribution of bearing pads about the drive shaft. Furthermore, a wind turbine including such a bearing arrangement is also provided.

Abstract: An inner ring includes: a pair of shoulder outer peripheral surfaces on first and second axial sides of a raceway surface of the inner ring in contact with balls; seal grooves disposed in first and second axial ends of the inner ring and defining labyrinth clearances with lips; and edges disposed on the first and second axial sides. Each of the edges is configured to cause grease flowing along an associated one of the shoulder outer peripheral surfaces to leave the shoulder outer peripheral surface in the direction of an extension thereof. Each of the lips includes a lip oblique surface functioning as a guide surface to guide the grease that has left the edge not to a radially inner region of the bearing but to a radially outer region of the bearing.

Abstract: A bearing assembly includes a housing having a flange at a first axial side and a bearing attachment section at a second axial side and a rolling-element bearing having inner and outer rings and a plurality of rolling elements. The rings are sealed on first and second axial sides by first and second seal disks, and the outer ring is pivotably mounted in the attachment section of the housing and the inner ring is configured to be mounted on a shaft. The assembly also includes a seal assembly configured to form a seal between the flange and the shaft at the first axial side of the housing, an end cover, an O-ring compressed between the second axial side of the housing and the end cover and at least one seal barrier between the seal assembly and the first seal disk and/or between the cover and the second seal disk.

Abstract: A rolling bearing device includes: a bearing portion that has an inner ring, an outer ring, a plurality of balls, and a cage that holds the plurality of balls; and an oil supply unit provided adjacent to the bearing portion in the axial direction and configured to supply lubricating oil to the bearing portion. The oil supply unit has: a pump that suctions lubricating oil into an oil chamber and discharges the lubricating oil by varying a capacity of the oil chamber by periodically driving a piezo element; and a control portion that causes the pump to operate by varying a rising time of a voltage applied to the piezo element in accordance with whether a drive period of the piezo element is long or short.

Abstract: A coolant pump with an integrated shaft bearing (ISB) assembly is provided. The ISB has a bearing housing, and at least one bearing located therein supports a shaft. A bearing seal is connected to the bearing housing at a first axial end and contacts the shaft, and a vent cover is also located at the first axial end to define a vent space between it and the bearing seal. A seal assembly is located between the shaft and the vent cover. A vent insert is located in the vent space and connected for rotation with the shaft. Venting air enters via a vent space inlet connected to the vent space, and is exhausted by a vent space outlet. A generally annular collection cavity is located inside the vent space and connected to the vent space outlet. This allows for active purging of condensate or coolant leakage to protect the bearing.

Abstract: Embodiments disclosed herein relate to bearing apparatuses including a bearing assembly having a continuous superhard bearing element including a continuous superhard bearing surface and a tilting pad bearing assembly. The disclosed bearing apparatuses may be employed in pumps, turbines or other mechanical systems. In an embodiment, the bearing apparatus includes a first and second bearing assembly. The first bearing assembly includes a first support ring and a plurality of tilting pads. Each tilting pad is tilted and/or tiltably secured relative to the first support ring. The second bearing assembly includes a continuous superhard bearing element. The continuous superhard bearing element includes a continuous superhard bearing surface facing the plurality of tilting pads and exhibits a maximum lateral width greater than about 2 inches.

Abstract: A half thrust bearing having a semi-annular shape includes a sliding surface for receiving an axial force of a crankshaft of an internal combustion engine, and a rear surface on an opposite side of the sliding surface, and defines a reference plane on the rear surface side that is perpendicular to an axial direction. The sliding surface includes a flat surface portion near a circumferentially central portion and in parallel with the reference plane, and inclined surface portions on both sides of the flat surface portion in a circumferential direction. At any radial positions of the half thrust bearing, an axial distance between the reference plane and the sliding surface is maximum at the flat surface portion, and is reduced in the inclined surface portions toward both circumferential end portions of the half thrust bearing.

Abstract: A race of a bearing assembly is provided. The race includes an exterior facing surface having front and rear faces and serrations extending in an axial direction between the front and rear faces and protruding outwardly from the exterior facing surface.

Abstract: In a copper alloy machined cage for a thrust ball bearing, an inside surface of a pocket includes a cylindrical surface, a support surface which is continuous with the cylindrical surface and contacts a ball in an axial direction, and two protruding portions which are formed at an equal interval in a circumferential direction of the pocket, at a ball insertion side of the pocket which is opposite to the support surface in the axial direction and protrude from the cylindrical surface. The protruding portions prevent falling out of the ball from a ball insertion side opening of the pocket and are either elastically deformed or elastic-plastically deformed by the ball during insertion of the ball into the pocket.

Abstract: A bearing structure includes: a bearing hole formed in a bearing housing, a semi-floating metal bearing accommodated in the bearing hole and having a pin hole formed therein; a through-hole formed in the bearing housing and facing the pin hole in the semi-floating metal bearing; a regulating member which is inserted into the through-hole and in which a fixed portion is pressed onto an inner surface of the through-hole for the regulating member to be fixed to the bearing housing at a fixed position where a distal end portion is inserted into the pin hole; a regulating hole opened at a base end in the insertion direction of the regulating member and extending at least to the fixed portion toward the distal end side; and a pressing member provided in the regulating hole to expand the regulating hole by pressing an inner surface of the regulating hole.

Abstract: A carrier hub assembly includes a carrier hub and a bearing assembly. The carrier hub includes an end portion having a first face surface and a second face surface. The bearing assembly includes a first bearing positioned on the first face surface and a second bearing positioned on the second face surface. Each bearing includes a pair of washers forming a pair of races, a cage, and a plurality of rolling elements. The bearing assembly further includes a connecting sleeve connecting the first bearing to the second bearing. The connecting sleeve retains the first bearing and the second bearing on the carrier hub.

Abstract: Disclosed is a bearing arrangement for a bearing wheel in a turret, the bearing arrangement being providable between the bearing wheel and a wheel shaft around which the bearing wheel is rotatably connectable. The bearing arrangement includes a slide bearing enabling the bearing wheel to slide axially on the shaft. The bearing arrangement further includes a roller bearing. A plurality of bearing arrangements may form a bearing system that is employed in a turret of a vessel. A method for mounting a bearing arrangement in a bearing system is also disclosed.

Abstract: A taper roller bearing includes: an inner ring, an outer ring, a plurality of taper rollers, and an annular cage. The cage includes a small-diameter annular portion on one side in a axial direction, a large-diameter annular portion which is positioned on the other side in the axial direction and on a radial outer side of a large flange of the inner ring, and a plurality of column portions which link the small-diameter annular portion and the large-diameter annular portion. The taper roller bearing has a labyrinth structure which suppresses a flow of lubricating oil to the outside of the bearing from the inside of the bearing between the large flange and the large-diameter annular portion.

Abstract: A sleeve is provided for supplying lubricant to an inter-shaft bearing mounted between co-axially mounted inner and outer shafts of a gas turbine engine. The sleeve has a sleeve annular outer surface and a sleeve annular inner surface. At least one lubricant supply connecting member extends from the sleeve outer surface for connection to a lubricant supply. At least one sleeve channel fluidly links the sleeve annular inner surface to the lubricant supply connecting member.

Abstract: A non-contact bearing is provided. In a suspended state, the non-contact bearing is disposed with a predetermined spacing to a first guide surface. The non-contact bearing includes: a bearing body and a micro electro mechanical layer. The bearing body includes a second guide surface, wherein the second guide surface is opposite to the first guide surface. The micro electro mechanical layer is disposed on the second guide surface, and includes at least one micro sensor and/or at least one micro actuator.

Abstract: An air foil bearing assembly includes: a bearing housing having a hollow into which a rotary shaft is fitted and having a slot formed in an axial direction on an inner circumference surface of the hollow; a bump foil having a bending end engaged to the slot formed at one end portion, rolled in a circumferential direction inside the hollow, and having a free end of another end portion located on the bending end; a top foil having a bending end engaged to the slot formed at one end portion, rolled in a second circumferential direction inside the bump foil, and having a free end of another end portion located on the bending end; and a stopper provided on each of both sides of the top foil in the circumferential direction and preventing the bump foil from protruding radially outwards from the hollow.

Abstract: A rolling-element bearing cage or rolling-element bearing cage segment is formed from aluminum alloy AA6082 and/or AA7020 and may have a tensile strength of at least 350 MPa and/or a yield strength of at least 310 MPa and/or a hardness of at least 100 HBW. Also a method of forming a rolling-element bearing cage or rolling-element bearing cage segment from aluminum alloy AA6082 and/or AA 7020.

Abstract: A bearing constructed in accordance to one example of the present disclosure includes at least one inner bearing ring, at least one outer bearing ring, at least one rolling element and a direct metal deposition (DMD) raceway architecture. The DMD raceway architecture is disposed between the at least one inner and outer bearing rings. The DMD raceway architecture includes an inner DMD structure that defines an inner raceway and an outer DMD structure that defines an outer raceway. The inner and outer raceways are configured to support the at least one rolling element.