Abstract: A rotation mechanism includes a mandrel, a rotation axle, a needle roller bearing and an angular bearing. The mandrel includes a shaft portion, a first annular contact portion and a second annular contact portion. The shaft portion has an outer surface, and the first annular contact portion and the second annular contact portion are located on the outer surface and respectively surround the axis of the mandrel. The rotation axle includes an annular portion, a third annular contact portion and a fourth annular contact portion. The annular portion has a shaft hole and an inner surface forming the shaft hole. The third annular contact portion and the fourth annular contact portion are located on the inner surface, and the mandrel passes through the shaft hole. The needle roller bearing is in contact with the first annular contact portion and the third annular contact portion, and is located between them.

Abstract: A rotary connection for a work machine, such as a crane, includes a rotational axis, an inner bearing ring, an outer bearing ring and at least three bearing body ring arrangements arranged between the bearing rings with a plurality of respective bearing bodies. At least one of the bearing body ring arrangements is configured to at least partially withstand forces directed in the radial direction to the rotational axis. At least two of the bearing body ring arrangements are configured to at least partially withstand forces directed parallel to the rotational axis and are arranged adjacent to and spaced apart from one another along the rotational axis. The at least two bearing body ring arrangements are configured to at least partially withstand forces directed parallel to the rotational axis in each case establish a direction of action and are arranged spaced apart from one another along the direction of action.

Abstract: A rolling-element bearing support module includes a support for mounting on an end wall of a machine. The machine has a bore in the end wall and a shaft in the bore, and the shaft has an abutment surface in a plane of the end wall. A rolling-element bearing assembly of the module includes a first bearing and a second bearing on the shaft, and a side surface of the first bearing is aligned with a plane corresponding to the end surface of the machine. The first bearing is formed to transmit, via the side surface, axial forces in at least one direction and the second bearing is disposed on a side of the first rolling-element bearing that faces away from the side surface of the first bearing.

Abstract: A transmission wheel arrangement includes a shaft and a transmission wheel having a hub and rotatably arranged on the shaft. An axial bearing and a radial bearing are arranged axially and radially respectively between the hub of the transmission wheel and the shaft.

Abstract: A wind turbine rotor hub bearing where the series of mobile members include more than two annular series of such members whereof at least two have different median diameters which are arranged in more than two rows scaled along the bearing rotational axis, with two end rows each comprising a series of roller bearings having individually a rotational axis transversal to the axis and at least an intermediary row of mobile members comprising balls.

Abstract: A bearing assembly for use in a down-hole drilling apparatus includes a bearing housing configured for connection to a drill string and a mandrel disposed at least partially within the bearing housing. The mandrel is configured to rotate about a longitudinal axis extending therethrough. A hybrid thrust bearing package is provided and disposed radially between the bearing housing and the mandrel. The hybrid thrust bearing package includes a plurality of ball bearings movable through at least one race, an annular stator supported by the bearing housing and an annular rotor ring supported on and rotatable with the mandrel. The annular stator and rotor rings define first and second flat PDC bearing surfaces engaged with one another at a bearing interface oriented generally orthogonally with respect to the longitudinal axis.

Abstract: A turret/vessel bearing arrangement and method for replacing bearings in situ without removing other bearings. The bearings are capable of being separated. A removable axial spacer secures the vessel and the turret into engagement with the upper and lower thrust bearings. Removal of the spacer allows increased separation between vessel and turret flanges that sandwich the thrust bearings. The mid radial bearing assembly includes one or more radially arranged bearing pads that allow for limited axial displacement of the turret with respect to the vessel during thrust bearing replacement while still bearing radial loads and allowing rotation. The addition of a temporary thrust bearing allows the vessel to weathervane about the turret while thrust bearing are replaced in situ.

Abstract: A bearing arrangement having at least two parts (10, 12) rotatable relative to one another, in which one (10) of the parts has at least one annular groove (14) concentric with the axis of rotation (A), and the other part (12) has a tongue (16) that is complementary to the groove (14) and engaged therein, and in that each of the parts (10, 12) is divided into at least two sectors (10a; 12a) along separating faces that pass through the groove (14) and the tongue (16), the tongue (16) extending over all sectors (12a, 12b) of the corresponding part (12).

Abstract: A transmission wheel arrangement includes a shaft and a transmission wheel having a hub and rotatably arranged on the shaft. An axial bearing and a radial bearing are arranged axially and radially respectively between the hub of the transmission wheel and the shaft.

Abstract: A rolling-element bearing assembly includes an inner ring, an outer ring and a plurality of rolling elements disposed between the inner ring and the outer ring on a common pitch circle diameter. A retaining device is attached to one of the inner ring and the outer ring and holds the rolling-element bearing assembly together without falling apart. The rolling elements include balls and rollers disposed on the common pitch circle diameter in an alternating manner. Further, at least one of the inner ring and the outer ring includes a raceway groove that axially supports the roller bearing balls.

Abstract: A bearing device with an arrangement of at least two bearings is provided. A filling made of an amorphous/solid active medium as a mechanism of compensating for axial loads is arranged between a bearing race of at least one of the bearings and a surrounding component of the bearing arrangement.

Abstract: A tapered roller thrust bearing is disposed in each of both sides in an axial direction of a cylindrical roller bearing with aligning housing ring which is provided with an inner ring, an outer ring, cylindrical rollers and an aligning housing ring. The tapered roller thrust bearing is constituted by disposing tapered rollers between a first raceway surface which is an outer side face in the axial direction of the outer ring and a second raceway surface of a side raceway ring disposed in an outer side in the axial direction of the outer ring. An intersection of lines extended from generatrices of each of the tapered rollers which are in contact with the first raceway surface and the second raceway surface, and an intersection of lines extended from the first raceway surface and the second raceway surface are disposed on a curvature center of the aligning sliding surface.

Abstract: A rotating flow head has a lubricated bearing pack for isolating bearing elements from wellbore fluids under pressure. The bearing pack, having a rotating cylindrical sleeve, bearing elements and two seal assemblies, is secured within an assembly bore of a stationary housing by a retainer plate accepting a plurality of lag bolts circumferentially spaced around a top portion of the stationary housing. Each of the seal assemblies have at least one sealing element having a body, an annular cavity, an inner sealing surface, and a flange that distends radially outwardly when axially compressed. A loading ring fit to the annular cavity urges the inner sealing surface radially inwardly to sealingly engage the rotating cylindrical sleeve. The inner sealing surface further comprises a first and second sealing surface and a debris channel therebetween.

Abstract: Embodiments of a combination bearing are provided, as are embodiments of a valve assembly including a combination bearing. In one embodiment, the valve assembly includes a flowbody having a flow passage therethrough, a drive shaft rotatably mounted within the flowbody, a valve element mounted to the drive shaft and positioned within the flow passage, and a combination bearing coupled between the flowbody and the drive shaft. The combination bearing comprises an integral radial load/thrust ring coupled to the drive shaft, and a thrust washer substantially adjacent the integral radial load/thrust ring, as taken along the longitudinal axis of the combination bearing. An outer radial ring circumscribes the integral thrust/radial load ring. A first plurality of rolling elements is captured between the thrust washer and the integral radial load/thrust ring, and a second plurality of rolling elements is captured between the outer radial ring and the integral radial load/thrust ring.

Abstract: A vehicle wheel bearing apparatus has an outer member, an inner member with a wheel hub, and at least one inner ring, double row rolling elements, seals and a rolling bearing fit onto the inner circumference of the wheel hub positioned and secured by a retaining ring. The retaining ring is mounted at an inner side position of a bearing center line. A retaining ring groove, for mounting the retaining ring, is formed with a substantially rectangular cross-section. Outer side and inner side corner portions of the retaining groove are formed with circular arc cross-sections. Each corner portion has a radius of curvature. The radius of curvature of the outer side corner portion is larger than the radius of curvature of the inner side corner portion.

Abstract: The present invention provides grease which prevents frictional wear on a lubricating surface and excellent in performance of preventing occurrence of flaking, heat-resistant performance, and long-term durability, a grease-enclosed rolling bearing, a constant velocity joint, and rolling parts. Grease is composed of base grease, essentially containing a thickener, to which at least 0.01 to 15 wt % of one substance selected from among bismuth and inorganic bismuth compounds is added. The inorganic bismuth compounds are at least one inorganic bismuth selected from among bismuth sulfate, bismuth trioxide, bismuth carbonate, and sodium bismuthate. The above-described grease is used for the rolling bearing and the constant velocity joint. A coating film of at least one substance selected from among the bismuth and the inorganic bismuth is formed on surfaces of the rolling parts.

Abstract: A downhole motor having a motor section, a drive shaft section, and an output shaft section, the output shaft section having a rotatable output shaft with a first end and a second end, a first thrust bearing assembly proximal to the first end of said output shaft, a second thrust bearing assembly proximal to second end to said output shaft and a radial bearing assembly disposed between the first and second thrust bearing assemblies.

Abstract: A bearing for a connecting rod includes a retainer having a plurality of pockets spaced about a circumference of the retainer, a first end that defines a first flange, and a second end that defines a second flange opposite the first flange. The bearing also includes a plurality of radial bearing elements that supports a radial load, and each of the plurality of radial bearing elements is positioned in one of the plurality of pockets. A first plurality of axial bearing elements is positioned on the first flange and receives at least a portion of an axial load, and a second plurality of axial bearing elements is positioned on the second flange and receives at least a portion of the axial load.

Abstract: A bearing assembly has an outer housing, and an inner mandrel extending into outer housing. Radial bearing sleeves are positioned between the inner mandrel and the outer housing at both of ends of the outer housing. A thrust bearing assembly is positioned within the interior cavity of the outer housing, and includes a fixed bearing carrier fixed to the inner mandrel, first and second floating bearings carriers, and first and second pressure responsive fillers. Floating bearing carriers support hard face bearings that engage hard face bearings on the fixed bearing carrier to withstand axial loads. Pressure responsive fillers permit the floating bearing carriers limited angular adjustment in relation to the fixed bearing carrier to maintain their respective at least one hard face bearing in face to face relation notwithstanding deflections within required radial bearing tolerance.

Abstract: Bearing systems for high speed rotating shafts, such as turbocharger shafts, include a first ball bearing in one end of an elongated cylinder capable of carrying axial thrust in both directions and a second ball bearing in the opposite end of the elongated cylinder with its outer race slideably mounted in the cylinder against the biasing force of a preload spring. The second ball bearing is free to move axially with the shaft upon axial expansion of the shaft when exposed to high temperature. The inner races of the ball bearings are clamped to and rotate with the shaft as part of the rotating assembly.

Abstract: A bearing assembly for a shaft or similar that is axially guided with precision in a housing. The shaft is stressed to differing degrees and/or for different periods of time in the two axial directions. The bearing assembly has a single-row angular contact ball bearing and a single-row cylindrical roller bearing. The angular contact ball bearing is designed to receive the greater main axial load that is exerted during operation, whilst the smaller axial force that acts in opposition is absorbed by the cylindrical roller bearing in addition to the radial forces. The quantity of equipment required to absorb the small axial force that in general is only exerted periodically can be kept to a minimum. In addition, a predefined axial play is pre-set in the unit and a defined lateral ring overhang is set between the inner and outer ring.

Abstract: A composite roll bearing (1), comprising an outer ring (2) and an annular inner ring (3) of groove shape in cross section having first, second, and third receiving surfaces (3a, 3b, 3c) facing the both end face inner peripheral portions (2a, 2b) and the circular inner peripheral surface (2c) of the outer ring (2) at specified intervals. A plurality of rollers (4) for thrust bearing are installed between one end face portion (2a) of the outer ring (2) and the first receiving surface (3a) of the inner ring (3) and between the other end face (2b) of the outer ring (2) and the second receiving surface (3b) of the inner ring (3). A plurality of rollers (5) for radial bearing are installed between the circular inner peripheral surface (2c) of the outer ring (2) and the third receiving surface (3c) of the inner ring (3). The rollers (5) are restricted to move in a thrust direction by retainer portions (8a, 8a) formed at the inner ends of retainers (6, 7) for the rollers (4) for thrust bearing.

Abstract: The combined radial/axial bearing has an outer running track formed by a radially inward-pointing rim of the cylindrical sleeve, an inner running track formed by a radially outward-pointing rim of an inner ring and the axes of rotation of the cylindrical rolling bodies in the inner running track intersect with the axes of rotation of the cylindrical rolling bodies in the outer running track virtually at a center of the cylindrical rolling bodies in the outer running track.

Abstract: A joint assembly has a pair of constant velocity universal joints and a connecting drive shaft. A cover unit protects the constant velocity universal joints and prevents hanging down of the joints under their own weight. The unit cover is arranged to cover the outer circumferential surfaces of the pair of constant velocity universal joints and boots. The unit cover is formed from elastomer material by injection molding. The cover unit inner circumferential surface has a configuration corresponding to the outline configurations of the pair of constant velocity universal joints and the boots.

Abstract: A ground-based power generator that produces hot gas and that has a hot gas valving system includes a butterfly valve in a gas flow conduit. The generator is improved in that the butterfly valve is mounted in the conduit by a ball-roller bearing.

Abstract: An antifriction bearing A capable of transferring radial loads as well as thrust in both axial directions. The bearing A comprises an outer race (2) having a primary raceway (20) and a back face (22), the back face (22) further having a reverse thrust raceway (26) beyond the small end of the primary raceway (20). The bearing A also comprises an inner race (4) having another primary raceway (30). Rolling elements (6) are arranged in a single row between the primary raceways (20, 30) of the races (2, 4). A backing plate is carried by the inner race (4) and presented opposite the back face (2)2 of the outer race (2). An antifriction device (10) is located between the reverse thrust raceway (42) of the backing plate (8) and the reverse thrust raceway (26) of the outer race (2).

Abstract: A shaft 17 defines a front end portion 17a having a larger diameter and an opposite tail end portion 17b having a smaller diameter, the shaft 17 being rotatably supported by the housing 13 through a radial bearing 19 and a pair of angular ball bearings 21 at the front side large diameter portion 17a and the small diameter portion 17b, respectively.

Abstract: A wheel hub that provides a wheel that is free-wheeling in both directions of turning and is constructed to provide low rolling resistance, greater load carrying capacity and is more reliable that earlier hubs. The hub includes separate bearing systems for supporting, respectively, radial loads as perpendicular to a road surface, and axial loads as are side loads directed into the hub. The separate bearing systems include a pair of radial bearings for supporting radial loads, with each radial bearing of the pair mounted at each hub end to receive an axle fitted therethrough, and a pair of thrust bearings for supporting axial loads, with each thrust bearing of the pair mounted at a hub end, between the radial bearings outer surfaces and an axle mounting to a frame.

Abstract: A wheel hub that provides a wheel that is free-wheeling in both directions of turning and is constructed to provide low rolling resistance, greater load carrying capacity and is more reliable that earlier hubs. The hub includes separate bearing systems for supporting, respectively, radial loads as perpendicular to a road surface, and axial loads as are side loads directed into the hub. The separate bearing systems include a pair of radial bearings for supporting radial loads, with each radial bearing of the pair mounted at each hub end to receive an axle fitted therethrough, and a pair of thrust bearings for supporting axial loads, with each thrust bearing of the pair mounted at a hub end, between the radial bearings outer surfaces and an axle mounting to a frame.

Abstract: A steering bearing device includes a bearing disposed between an upper portion of a head tube and a steerer tube. The steerer tube includes a race disposed on the lower portion. Two bearings are disposed between the lower portion of the head tube and the race and disposed one above the other. The lower bearing is for anti-thrust purposes and for absorbing shocks from the steerer tube. The race includes an annular chamber formed between an outer wall and an inner fence for receiving the lower bearing and for forming an excellent seam for preventing water from entering into the bearing device.

Abstract: An improved rotational mechanism, or roller assembly, including a central roof support, for use with a rotational building that is characterized by a movable vertical wall. The improved rotational mechanism was designed to prevent binding during rotation of the building, and to prevent or minimize lateral movement and tipping. The rotational mechanism comprises in part an angled member having a vertical leg and a horizontal leg, said horizontal leg projecting inwardly and mounted internally about the lower edge of the building wall. Cooperating with the angled member is an L-shaped angle member, where a radially projecting leg thereof includes at least one ball/transfer caster, preferably a plurality about the building foundation. In operation, the ball/transfer caster is in rolling contact with one horizontally disposed leg of the U-shaped channel. A comparable, laterally directed ball/transfer caster or conventional roller may also be incorporated into the mechanism.

Abstract: A mount according to this invention includes a base and a rotor rotatably mounted to the base. The mount has a central axis. The rotor has an axis of rotation which is coincident with the central axis. A base race is fixed to the base, and a rotor race is fixed to the rotor. A base track face is formed on the base race, and a rotor track face is formed on the rotor race, antipodally spaced from one another. A plurality of bearing balls are held between these track faces. The track faces are frustums of cones so as to make a point contact with the balls.

Abstract: An axial-radial rolling bearing comprising a first row of rolling elements which, for the absorption of axial forces are arranged between plane-parallel raceways of two race discs and a second row of rolling elements which, for the absorption of radial forces are arranged between flanges extending essentially axially and formed at adjacent peripheral edges of the race discs, characterized in that the flanges extend in different axial directions and overlap each other over at least a part of their length, the two rows of rolling elements being arranged radially one above the other substantially in one plane.

Abstract: A multi-color printing apparatus for screen printing workpieces in diverse colors. The apparatus has a plurality of printing units, each located at a work station, and spaced about a central support. A number of radially extending support arms cantilevered from a rotatable central support carry the workpieces between printing stations. After being indexed to its approximate final position at a particular work station, the support arms engage a brake pad to absorb rotational energy and to control motion of the support arm during a final, precise alignment step wherein a fork member is advanced toward a roller mounted on the support arm to precisely align and lock the support arm during the screen printing operation. Also disclosed is a collar for rotatably mounting the central support at its bottom end. The collar has two portions, one mounted to the central support and the other mounted to a desired location in the printing apparatus.

Abstract: Axial loads are absorbed in a roller bearing assembly by elastic axial deformation of the bell members of the bearing cage to avoid imposing axial loads on the roller bearings.

Abstract: There is disclosed herein a bearing for highprecision transport spindles used in machines for electrical reproduction technology, machine tools, measuring installations and the like, wherein axial movement due to bearing tolerances are eliminated by the bearing device of this invention. The radial and axial bearing of the spindle are decoupled from one another by means of the bearing device, thereby eliminating the axial dislocation errors.

Abstract: A fluid displacement apparatus is disclosed which includes a housing having a front end plate, a fixed fluid displacement member and an orbiting fluid displacement member. The fixed and orbiting members interfit to make a plurality of line contacts to define sealed off fluid pockets. A driving mechanism, including a drive shaft, is disposed within the housing and is connected to the orbiting member to effect orbital motion of the orbiting member upon rotation of the drive shaft. The drive shaft is rotatably supported by the front end plate through an angular bearing disposed within the front end plate. The pressure cone apex of the angular bearing coincides with the driving point of the orbiting member. A thrust race is disposed on one axial end surface of the angular bearing, and a ring plate is disposed within the front end plate facing the thrust race at a predetermined axial distance.