Abstract: A curvilinear motion rolling guide unit is such that pipe members adapted to form return passages are disposed respectively at undercuts of wings of an arcuate casing, thereby reducing working costs. A slider has a casing and end caps fixed to respective opposite ends of the casing. Pipe members adapted to form return passages are disposed at the respective undercuts formed on the wings of the casing. Cover members have longitudinally extending grooves, respectively, for covering the pipe members. Fitting grooves formed at opposite ends of the grooves of the cover members are fitted to direction changing passages provided in the respective end caps, whereby the cover members are fixed to the end caps.

Abstract: A squeeze film damper includes a bearing housing as an inner ring disposed around a radially outer side of a bearing which rotatably supports a rotary shaft, an outer ring disposed around a radially outer side of the bearing housing, a squeeze film formed by circulating a viscous fluid through a clearance in a radial direction between the bearing housing and the outer ring, and a coupling pin which couples the bearing housing and the outer ring to each other and is deformable in response to relative displacement in the radial direction between the outer ring and the bearing housing. The coupling pin has stiffness that is higher in a vertical direction than in a horizontal direction in a cross section perpendicular to an axial direction of the rotary shaft.

Abstract: A rolling bearing device includes a rolling bearing; and a spacer provided adjacent to one side of the rolling bearing in an axial direction and having a grease reservoir and a flow path, the grease reservoir being in a form of a groove, extending along a circumferential direction, and having grease reserved in the grease reservoir, and the flow path providing communication between the grease reservoir and an inner part of the rolling bearing. The spacer includes an annular wall surface that defines an inner periphery of the grease reservoir. An end of the annular wall surface on a side of the rolling bearing in the axial direction of the grease reservoir is continuous with an opposed end face of the spacer that is opposed to the rolling bearing. An entire area of the annular wall surface is constituted by a flat surface.

Abstract: A damper system may include an inner damper having a first annular geometry and a textured surface. An outer damper may also have an annular geometry and be disposed about the inner damper. The outer damper may have a textured surface. The textured surfaces of the inner damper and outer damper may define a cavity that is configured to contain a viscous fluid.

Abstract: A seal for a bearing assembly, including: a longitudinal axis; a first portion arranged to engage an outer ring for the bearing assembly; and a second portion extending radially inward and in a first axial direction from the first portion. The second portion includes: a first lip arranged to contact a rotatable shaft passing through the bearing assembly; and a second lip located past the first lip in a second axial direction, opposite the first axial direction, and arranged to be separated, in a radial direction, from the rotatable shaft by a first distance.

Abstract: A bearing structure has a crankshaft rotatably supported by a crankshaft bearing part, formed of a cylinder block of an internal combustion engine and a first bearing cap, through a bearing metal, a second shaft rotatably supported by a second shaft bearing part formed of the first bearing cap and a second bearing cap, wherein the bearing metal has a bearing metal planar portion for rotatably supporting the crankshaft with an entire inner peripheral surface of the bearing metal, the inner peripheral surface at which the bearing metal planar portion is formed, a bearing metal oil groove portion formed with an oil groove formed to extend circumferentially in an inner peripheral surface of the bearing metal, the inner peripheral surface at which the bearing metal oil groove portion is formed, a first oil hole opening at the oil groove, and a second oil hole opening at the oil groove.

Abstract: Bearing 10 includes: a half bearing member having an inner circumferential face that slides against an associated shaft, and a plurality of recesses provided in a first end face in an axial direction of the associated shaft; a first flange member having a plurality of projections provided at positions corresponding to the plurality of recesses provided in the first end face; and a plurality of staking marks formed in a periphery of each recess when each recess is staked in a state where each of the plurality of projections is fitted to a corresponding one of the plurality of recesses in the first end face to fix the first flange member to the half bearing member. When staking marks formed on both sides of at least one of the plurality of recesses are viewed in a radial direction of the associated shaft, a volume of a deformed portion near a staking mark located outside in a circumferential direction is smaller than a volume of a deformed portion close to a staking mark located inside.

Abstract: A countershaft as disclosed herein may include one or more bearing zones along its axial length. Each bearing zone may include one or more radial holes in fluid communication with one or more grooves, respectively, and one or more axial channels formed along the longitudinal length of the countershaft. Each groove may be positioned adjacent an interface between a rotating member and a non-rotating member and include one or more features therein, such as a profile and/or taper.

Abstract: A rolling bearing including an outer ring, an inner ring and two annular, cage-guided rolling body rows, the two rolling body rows being axially pre-stressed by at least one spring element which is disposed therebetween, the two rolling body rows each being pre-stressed against a rim at the end of the outer ring, while the inner ring is axially movable against the restoring force of the spring element.

Abstract: An oil delivery system is provided. The system may comprise a bearing housing comprising an oil delivery cavity. A bearing may be pressed against the bearing housing. The bearing may comprise an outer ring with a passage formed through the outer ring. A bearing is also provided. The bearing may include an outer ring, and a passage formed through the outer ring.

Abstract: A wheel bearing arrangement of a vehicle axle is disclosed. The wheel bearing arrangement includes a wheel bearing, which contains at least two rolling element rows, for supporting a wheel hub which can be driven by a drive element. The rolling elements of the wheel bearing are guided in races of a stationary outer ring, the rotating wheel hub, and a separate inner ring which is allocated to the wheel hub. In the assembled state, the wheel hub of the wheel bearing arrangement and the drive element are operatively connected via gearing. The inner ring has a radially stepped inner contour, the inner contour having two diameters which differ from one another, and are received in a complementarily designed receiving area of the wheel hub. The position of the inner ring is fixed on the end face by a rolling riveted collar of the wheel hub.

Abstract: A plain bearing bushing is formed from a material strip, wherein a first joining end of the material strip has a projection and a second joining end has a recess interacting with the projection, a base side of the projection being oriented towards the first joining end. A bushing is to be provided that is designed to be more advantageous with respect to the production method, in particular during the forming process, and with respect to dimensional tolerance and long-term stability. This is achieved by a bushing with clamping elements in which the joining ends of the material strip are fixed both in axial direction and in circumferential direction of the bushing in a frictionally engaged and/or formfitting manner.

Abstract: A bearing assembly includes a first race having an arcuate configuration and a first set of bearing elements. The first set of bearing elements is arranged to dynamically contact the first race and recirculate within the bearing assembly in a first direction. A second race has an arcuate configuration and is removably secured to the first race. A second set of bearing elements is arranged to dynamically contact the second race and recirculate within the bearing assembly in a second direction opposite the first direction.

Abstract: There is provided a half thrust bearing having a semicircular-ring shape for a crankshaft of an internal combustion engine, including a back metal layer and a bearing alloy layer having a slide surface on which thrust reliefs are formed adjacently to both circumferential end surfaces so that a wall thickness of the half thrust bearing becomes thinner from the slide surface toward the circumferential end surfaces. A thrust relief length L1 of each thrust relief extends over a circumferential angle ?1 from the circumferential end surface toward a circumferential central portion, and is constant between an inside end portion and an outside end portion in a radial direction of the half thrust bearing. A flat surface of each thrust relief includes a first region on the circumferential end surface side and a second region on the circumferential central portion side.

Abstract: A bearing assembly is disclosed having a wearing surface formed from an alloying including tin, a wear material configured to be contacted by the wearing material during use, and the wear material having a smoothed surface. A method of providing superlubricious performance of a bearing assembly is also provided.

Abstract: A strut bearing has an upper carrier having a first outer rim and a first inner rim, the first inner rim having a first circumferential connector, and a lower carrier having a second outer rim and a second inner rim, the second inner rim having a second circumferential connector. The first inner rim is held to the second inner rim through an overlapping connection of the first circumferential connector to the second circumferential connector. The strut bearing also has a bearing arranged between the upper carrier and the lower carrier, and a first sealing ring positioned between and in contact with the first circumferential connector and the second circumferential connector. The sealing ring is formed from a material that is softer and more elastic than a material from which the first circumferential connector and the second circumferential connector are formed.

Abstract: A bearing for a hinge in a hinged raked aircraft wing tip includes an outer member that has a concave inner surface and an inner member that has first and second inner segments. Each of the first and second inner segments has a base that has a bearing section extending therefrom. The bearing sections together form a convex outer surface that is complementary in shape to the concave inner surface. A preload feature is positioned between and engages a portion of the bearing sections. A lubricous liner is positioned between the concave inner surface and the convex outer surface. The bearing sections are positioned in the outer member to compress the preload feature to limit axial movement between the outer and inner members to a predetermined magnitude. The preload feature flexes outward as a result of wear to the liner to maintain the axial movement to the predetermined magnitude.

Abstract: An improved sealed bearing pack for a downhole mud motor is disclosed. More specifically, embodiments of the present invention relate to a mud motor for straight and directional drilling with a sealed bearing pack designed to withstand higher torques, loads, and pressure operations and with a reduced failure rate. In some embodiments, the sealed bearing pack has more lateral support for improved horizontal drilling and extended operational life. Thus, one embodiment includes an adapter housing extending the length of the outer housing and a bearing within the adapter housing for increased support. Additionally, some embodiments include two thrust bearing assemblies for improved operations and reduced failures. Various embodiments include a longer flow sleeve than prior art sealed bearing packs.

Abstract: A seal configured to seal a gap between a first component and a second component to at least partially retain a fluid on a first side of the seal in a space between the first component and the second component, the seal including a seal body having a radially outer periphery and a central opening configured to receive the first component or the second component, at least one sensor configured to detect a characteristic of the fluid and an adapter. The at least one sensor is disposed on the adapter, and the adapter has a first portion extending through the seal body at a location spaced from and radially between the radially outer periphery and the central opening and a second portion axially abutting the seal body on the first side of the seal.

Abstract: A bearing bush 1 for use in a toggle has a cylindrical metallic base material 2 and a solid lubricant 3 embedded in the metallic base material 2, and the metallic base material 2 has dead end grooves 5 formed in a cylindrical inner peripheral surface 4, an annular groove 6 formed in the cylindrical inner peripheral surface 4, and circular holes 7a and 7b as well as 7c and 7d formed in each of a pair of semicylindrical inner peripheral surfaces 4a and 4b adjacent to each other in an axial direction X and two pairs of semicylindrical inner peripheral surfaces 4c and 4d sandwiching the pair of semicylindrical inner peripheral surfaces 4a and 4b in a circumferential direction R and adjacent to each other in the axial direction X in each pair.