Abstract: An enclosure for a turbomachine includes a turbomachine drive shaft rotating about a longitudinal axis (X) by means of two roller bearings, an upstream bearing and a downstream bearing, each having an inner ring carried by the drive shaft. The two bearings share a single integral outer ring that has an upstream end and a downstream end connected to one another by a section of studs. The single outer ring is carried by an upstream base plate and a downstream base plate of a bearing support configured to be attached to a stationary structure of the turbomachine.

Abstract: Aspects of the disclosure are directed to a rotatable shaft, and a plurality of bearings coupled to the rotatable shaft, where the plurality of bearings include a first bearing, a second bearing, and a third bearing, where the first bearing defines an axial first bearing centerline, where the second bearing defines an axial second bearing centerline, where the third bearing defines an axial third bearing centerline, and where the axial second bearing centerline is radially offset from the axial first bearing centerline and the axial third bearing centerline.

Abstract: A centrifugal compressor includes a housing, a partition separating an empty space in a housing into a speed increaser chamber and an impeller chamber, an insertion hole provided in the partition to allow insertion of a high-speed shaft, a seal located in the insertion hole to seal a boundary between the partition and the high-speed shaft, and a bearing receptacle located in the partition. The partition includes a communication passage that allows communication between a portion of the insertion hole located closer to the speed increaser chamber than the seal and the bearing receptacle.

Abstract: An adjusting device for longitudinal adjustment of a vehicle seat comprises a first rail 2 and a second rail 1 movably guided relative to the first rail 2. A linear guide 5 extending in the longitudinal direction is disposed between the two rails 1, 2 in a bearing area, wherein the linear guide 5 comprises a retainer 6 and a plurality of rolling elements 70, 71. The retainer 6 comprises a side wall 60, a plurality of recesses 66 being formed in the side wall 60. The rolling elements 70, 71 are supported in the recesses 66 of the retainer 6 spaced apart from each other in the longitudinal direction. According to the invention the rolling elements include a set of rolling elements consisting of at least one roller 71 and at least one ball 70.

Abstract: An assembly includes a centering spring having an annular flange, an annular body, and a plurality of resilient beams extending from the flange to the body. The annular flange defines a passage that extends at least radially inward with respect to a centerline circumscribed by the flange from a radially outer surface of the flange to a radially inner surface of the flange. The annular body is spaced from the flange along the centerline, a radially outer surface of the body forming a first annular cavity relative to an adjacent surface configured to be a first fluid damper. A deflection of the body relative to the flange is restrained by a restoring force produced by the plurality of resilient beams and the first fluid damper. A method includes providing the aforementioned assembly and passing a damping fluid through the passage of the flange.

Abstract: A radial rolling bearing assembly is provided which includes first and second radial rolling bearings having respective bearing cups that include respective bearing races, respective radially extending flanges at first axial ends and respective bearing axial flanges with respective connector elements at the second axial ends. Respective cages hold rolling elements in the bearing cups that contact the races and define respective bearing support surfaces that can support, for example, a shaft or housing. A connector sleeve connects the first and second radial rolling bearings. The connector sleeve includes a first axial end with a first complementary connector that engages the first connector element, and a second axial end with a second complementary connector that engages the second connector element.

Abstract: An anti-friction bearing including a mechanical bearing (2) for transmitting mechanical loads and a potential equalization bearing (3), each rolling element (7) of which has two identical side surfaces. The potential equalization bearing is particularly a ball roller bearing or a cylindrical roller bearing. The potential equalization bearing (3) preferably includes resilient rolling elements (7) in the form of hollow rollers.

Abstract: A bearing assembly is provided. The assembly includes a plurality of tapered rollers and a plurality of spherical rolling elements. A first inner ring defines a first inner raceway on which the plurality of tapered rollers run, and a second inner ring defines a second inner raceway on which the plurality of spherical rolling elements run. A unitary outer ring includes a first portion defining a first outer raceway on which the plurality of tapered rollers run, and a second portion defining a second outer raceway on which the plurality of spherical rolling elements run.

Abstract: A bearing includes a fixed ring (16) and a rotating ring (14) for supporting an end of a rotatable element. An axis of the rotating ring is laterally displaced from an axis of the fixed ring. An eccentric ring (12) separates the rotating ring from the fixed ring. The eccentric ring is rotatable relative to the fixed ring and is separated from the fixed ring by an angular contact ball bearing (ACBB) (11). The eccentric ring is separated from the rotating ring by a second bearing (13), the eccentric ring being substantially coaxial with either the fixed ring or the rotating ring.

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: The invention relates to a rolling bearing arrangement for a rotational connection for a roller/ball combination raceway system, for the purpose of relative movement of a plurality of rotating elements, in particular two rolling bearing rings supported on one another. At least one rolling element raceway is hardened along its annular shape in the contact area between rolling element and rolling bearing ring. The invention is characterized in that provided at the beginning and the end of the at least one hardened rolling element raceway is at least one overlap region which extends along the rolling element raceway, the overlap region comprising a region of lower hardness than the surrounding hardened region, the lower hardness gap region, extending at an inclination through the overlap region.

Abstract: A wheel bearing useful for automobiles includes an axle shaft and an axle tube around the shaft, inner and outer bearing races defined respectively at the outer periphery of the shaft and the inner periphery of the tube. A circumferential row of balls and a circumferential set of rollers disposed axially apart between the inner and outer bearing races to form a ball bearing and a roller bearing, in parallel, for supporting the axle shaft within the axle tube.

Abstract: A bearing support cage includes: an annular forward ring; an annular aft ring; an annular mounting flange disposed between the forward and aft rings; an annular array of axially-extending first spring fingers interconnecting the forward ring and the aft ring; and an annular array of axially-extending second spring fingers interconnecting the mounting flange and the aft ring, wherein the first spring fingers are interdigitated with the second spring fingers. The forward and aft rings, the mounting flange, and the spring fingers are all part of a single monolithic component.

Abstract: A bearing support apparatus for a gas turbine engine, including: a first annular member; a second annular member disposed within the first annular member; first and second axially spaced-apart rolling-element bearings disposed between the first and second annular members so as to enable relative rotation of the first and second members; a first spring element mounting the first bearing to the first member; and a second spring element mounting the second bearing to the first member through the first spring element, such that the first and second bearings are physically supported in series relative to the first member.

Abstract: The present invention provides a ball transfer unit, which includes: a main body, a first rotating body, and a plurality of second rotating bodies arranged between the main body and the first rotating body. The main body has an end forming a receiving chamber and thus forming a receiving chamber sidewall. The second rotating bodies are rotatably arranged on the receiving chamber sidewall. The main body forms an air entrance passage in communication with the receiving chamber. The receiving chamber sidewall extends out to form a bearing section corresponding to the air entrance passage. The bearing section has a side surface in which air outlet ports are formed. The ball transfer unit of the present invention prevents powder dusts from falling therein, ensures smooth operation of the ball transfer unit, and extends the lifespan.

Abstract: A roller bearing, particularly for mounting the wheel of a commercial vehicle, has two angular-contact ball bearings placed in an O-arrangement relative to one another. The roller bearing is designed such that each angular-contact ball bearing is associated to a roller body row having a common inner ring with the angular contact ball bearing, wherein the two roller body rows are facing one another and form inner bearing rows.

Abstract: A method of repairing a bearing of a wind turbine generator is provided which is able to more permanently repair a gap which occurred between a constituent member of the wind turbine generator and a bearing ring of the bearing. For example, in the case of repairing the gap 13 between the main shaft outer cylinder 10 of the wind turbine generator 1 and the outer ring 12A of the main bearing 12, the plate 40 is inserted between the main shaft outer cylinder 10 and the outer ring 12A, and also the plate 40 is fixed to an inner circumferential surface of the main shaft outer cylinder 10 by the adhesive agent 41. On the other hand, slip is permitted between the plate 40 and the outer ring 12A of the main bearing 12.

Abstract: The apparatus includes a first component mounted for rotation with the wheel and a second component spaced from the first component by a predetermined gap and not connected for rotation with the wheel. One of the first and the second components is displaced relative to the other upon a force to close the gap and contact the other component to form a load path for the force. The load path is a secondary load path that bypasses the bearing races, preventing excessive plastic deformation of the races. The apparatus is configured with at least one feature to inhibit corrosion of the first and second components at the gap. The feature may be an extension of the second component that localizes the gap to just a portion of the second component. Alternatively, coatings, shims, lubricants, and seals may be used alone or in combination to prevent corrosion at the gap.

Abstract: The invention relates to an anti-friction bearing comprising a first bearing race, a second bearing race and a plurality of anti-friction bodies that are located between the first bearing race and the second bearing race. According to the invention, the anti-friction bearings are arranged in several rows, which are asymmetrical in the longitudinal direction of the anti-friction bearing in relation to any plane that runs perpendicularly to said longitudinal direction of the anti-friction bearing.

Abstract: A vehicle wheel bearing apparatus has an outer member formed with a body mounting flange on its outer circumferential surface. The body mounting flange is to be mounted on a knuckle of the vehicle. The outer member inner circumference includes double row outer raceway surfaces. An inner member includes a wheel hub with a wheel mounting flange formed on one end. A cylindrical portion extends from the wheel mounting flange. At least one inner ring is press-fit onto the cylindrical portion of the wheel hub. The inner ring outer circumference is formed with an inner raceway surface arranged opposite to the double row outer raceway surfaces. Double row rolling elements are freely rollably contained between the outer raceway surfaces and inner raceway surfaces of the outer member and the inner members. Seals are mounted within annular openings formed between the outer member and the inner member. The inner ring is axially secured relative to the wheel hub by a caulked portion.

Abstract: A ball roller bearing and to a method for the installation thereof. The ball roller bearing has an outer bearing race, and an inner bearing race, and a plurality of ball rollers, which are disposed between the bearing races and are held at equal distances to each other by a bearing cage. For this purpose, the ball rollers have a width of approximately 70% of the diameter of a spherical shape thereof, and roll with bearing surfaces thereof in two groove-shaped raceways, the depth of which is smaller than the distance between the outer and inner bearing race. The cage pockets of the bearing cage have a cross-sectional contour of a ball roller disposed in the longitudinal and transverse directions to the circumferential direction. The method for installation of the ball roller bearing is a cross/oblique pivot mount between the inner and outer bearing races and the ball rollers.

Abstract: A single-bearing structure, in particular for use in a wind power plant, which has a low friction operating characteristic. The single-bearing structure for mounting a rotor in the wind power plant has two first rows of rolling bodies, which are arranged in the single-bearing structure such that their pressure lines intersect with one another and with a radial plane of a rotation axis of the single-bearing structure. The rolling bodies of the two first rows of rolling bodies are designed as cylindrical rollers.

Abstract: The invention refers to a bearing unit for supporting a pinion shaft (8) having at one side a pinion head (8a) and which bearing unit is incorporating a taper roller bearing (1) and an angular ball bearing (5) having a common outer race ring (2), and having separate inner race rings for the taper roller bearing (1a) and for the angular ball bearing (5a), which inner race rings (1a, 5a) are spaced apart a distance along the pinion shaft, wherein the taper roller bearing (1) has a contact angle (?) from 15° to 20°; for absorbing mainly the radial force component of the tooth force at the pinion head and the one-row angular ball bearing (5) has a contact angle (?) of between 35° and 45° for absorbing mainly the axial force coming from the gear mesh and that induced by the taper roller bearing.

Abstract: A roller bearing, particularly for mounting the wheel of a commercial vehicle, has two angular-contact ball bearings placed in an O-arrangement relative to one another. The roller bearing is designed such that each angular-contact ball bearing is associated to a roller body row having a common inner ring with the angular contact ball bearing, wherein the two roller body rows are facing one another and form inner bearing rows.

Abstract: This invention relates to a bearing arrangement for supporting a rotatable shaft relative to a support structure. The bearing arrangement comprises a first bearing having radially inner and outer races, the inner race being rotatable relative to the outer race in use, and a second bearing arranged such that the first bearing is mounted to the support structure via the second bearing. The second bearing may allow for deflection of the shaft supported by the bearing arrangement. The bearing arrangement may be applied to high speed thrust bearing applications, such as, for example, within a gas turbine engine.

Abstract: A bearing assembly comprises at least two axially-spaced bearings, each bearing including an inner ring. The at least two inner rings have differently-sized bore diameters. A sleeve-shaped connecting piece having a substantially frustum, conical or tapered shape is disposed between the two inner rings. An inner diameter of the connecting piece at its respective axial end regions corresponds to the respective bore diameter of the bordering inner ring so that first and second contact points are defined between the connecting piece and the respective inner rings. First and second curved or ring-shaped fixing elements are respectively disposed at the first and second contact points so as to fix the inner rings relative to the connecting piece in the radial direction of the bearing assembly. Each fixing element at least partially axially overlaps the connecting piece and the respective inner ring.

Abstract: A hot gas valving system for a ground-based power generation system includes a gas flow conduit having a wall and defining a path for fluid flow and a butterfly valve located in the wall and transversely across the path for fluid flow. The butterfly valve includes a first raceway defined by an inner ring and an outer ring, a second raceway defined by an inner ring and an outer ring, a combination of ball bearings and roller bearings retained in each raceway, an axle rotatably mounted in the inner rings of each raceway and cooperably rotatable therewith, and a baffle mounted longitudinally along the axle and extending from the axle into the path of fluid flow. Upon rotation of the axle, the baffle restricts or permits fluid flow.

Abstract: The invention is directed to a rolling bearing arrangement comprising two annular elements that are arranged mutually concentrically and at least regionally inside each other, for connection each to a respective one of two oppositely rotatable system components, and comprising a gap between said connecting elements, such that they are able to rotate in opposite directions about an imaginary axis located at the center of the annular connecting elements and extending approximately perpendicular to the ring plane, wherein at least two rows of rolling bodies are provided in the region of the gap between the connecting elements, wherein the annular connecting elements completely or partially overlap each other in the radial direction and one or more raceways for rolling bodies are arranged in radially overlapping regions of the annular connecting elements, in such a way that the contact angle which the connecting line between the centers of the points of contact of a rolling body with its two raceways makes with t

Abstract: It is an object of the present invention to allow an assembly of retainers and tapered rollers to be easily incorporated into an outer ring having a rib portion on an inner peripheral surface on an outboard side thereof, whereby helping to achieve an improvement in terms of assembly workability. Recesses (27, 28) are formed in a large end surface (25) and a small end surface (26) of an outboard side tapered roller (4a). Projections (35, 36) to be inserted into the recesses (27, 28) are formed in an outboard side retainer (6a). A diameter (A) of a circumcircle of the tapered rollers (4a) before they are inserted into a hub ring is set smaller than an inner diameter (B) of a rib portion (20). When a hub ring (1) is inserted into the outer ring (3), the tapered rollers (4a) move in a radial direction to cause the diameter (A) of the circumcircle to be greater than the inner diameter dimension of the rib portion, and as a result, the tapered rollers (4a) can be received in a specified position.

Abstract: The invention relates to a bearing assembly (1) comprising at least one first bearing (6) that acts as an axially free radial support (5) and at least one second bearing (8) that acts as a radially free axial support (7). According to the invention, said bearings (6,8) share a common rotational axis (19) and at least one first bearing ring (9) of the first bearing (6) and a second bearing ring (10) of the second bearing (8) are rotationally fixed in relation to at least one bearing seat.

Abstract: An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.

Abstract: A locating bearing assembly (10) is provided that optimizes load distribution between bearing rows and for all rolling elements within the rows in either positive or negative torque conditions, by combining a single row tapered roller bearing with an angular contact ball bearing. The outer race (60) for the ball bearing is preloaded by a spring element (72) to prevent the balls (26) from floating freely between the ball bearing's inner and outer raceways (16, 64). This will insure that the balls (26) are always sufficiently loaded to roll along a single axis which is off set from the radial direction. The use of the single row tapered bearing and the preloaded angular contact ball bearing provides for a locating bearing assembly (“LBA”) in which the ball bearing supports only reversing axial loads. All radial loads are borne by the tapered roller bearing and transmitted to the bearing assembly housing (30).

Abstract: A pivot assembly that can be retrofitted to existing traffic poles. The pivot assembly comprises a bearing assembly disposed between a top plate and a bottom plate. The bottom plate connects to the existing pole foundation with the standard anchor bolt arrangement. Similarly, the top plate connects to the base plate of the traffic pole using additional bolts. Bearings in the pivot assembly allow the pole to rotate relative to the foundation. Preferably, roller bearings are utilized, as these can be contained substantially within the pivot assembly without extending down into the foundation or up into the pole. This means the pivot assembly can be installed in existing, standard traffic poles and foundations without modifying either. The pivot assembly does not interfere with existing wiring or access openings.

Abstract: The invention relates to a self-aligning antifriction bearing (1) comprising at least one first row (9) of rolling bodies (11) and a second row (10) of rolling bodies (11) adjacent to said first row (9) of rolling bodies (11), whereby every row (9, 10) comprises balls (5) and rollers (6) disposed peripherally about a central axis of the self-aligning antifriction bearing (1). The bearing is characterized in that the balls (5) have a greater outer diameter (28) than the rollers (6).

Abstract: An inner ring is fitted on one-end side of an inner shaft and fixed to the inner shaft by caulking. During the caulking, the inner shaft is supported by a caulking receiving jig. A receiving section to which the jig is in contact is provided at a position near the one-end side of the inner shaft, for example, at a position nearer to the inner ring than a raceway section formed on the outer periphery on the other side of the inner shaft. As a result, a caulking load acting from a caulking jig on the inner shaft plastically deforms only a desired portion.

Abstract: A bearing assembly including an inner ring, an outer ring, a ball bearing assembly, a needle bearing assembly, and seals. The inner ring defines a ball raceway and a needle bearing raceway. The outer ring defines a ball raceway and a needle bearing raceway. A plurality of circumferentially arranged balls are received by said inner and outer ring ball raceways and a plurality of circumferentially arranged needle rollers are received by said inner and outer needle bearing raceways. The seals seal each end of the assembly.

Abstract: An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.

Abstract: A bearing assembly includes a double-row cylindrical roller bearing having no seals and having a grease sealed in its internal space. A double-row angular ball bearing having seals is provided in juxtaposition with one end face of the double-row cylindrical roller bearing. During run-in, part of the grease sealed in the double-row cylindrical roller bearing adheres to the outer surface of one of the seals of the angular ball bearing that faces the internal space of the cylindrical roller bearing. This increases the initial amount of grease sealed in the internal space of the cylindrical roller bearing, thereby prolonging its life.

Abstract: Radial self-aligning rolling bearing including an outer ring, an inner ring, and balls which are arranged to roll in the raceways of the rings, and also spherical rollers together as rolling elements, which are all guided in a cage. The balls are larger in diameter than the spherical rollers, so that the balls exclusively take up the entire bearing load when the bearing load is small and both the balls and the rollers take up a larger bearing load.

Abstract: Radial self-aligning rolling bearing including an outer ring, an inner ring, and balls which are arranged to roll in the raceways of the rings, and also spherical rollers together as rolling elements, which are all guided in a cage. The balls are larger in diameter than the spherical rollers, so that the balls exclusively take up the entire bearing load when the bearing load is small and both the balls and the rollers take up a larger bearing load.

Abstract: A needle bearing for use in a pump has an inner race, embodied as an eccentric sleeve, needles, and an outer race with rims oriented radially inward on both of its face ends, of which one rim is intended to secure the axial position of the needles and the outer race by engagement with the inner race, in that a rim fits over one end face of the inner race. In the pump unit, the needle bearing is disposed with an axial gap from a roller bearing on a shaft of a drive motor. The rim of the outer race engages this gap.

Abstract: A rolling bearing unit for a vehicle wheel comprising an outer ring formed with first and second outer ring raceways, a hub formed with a first inner raceway, and with a housing portion for an outer ring of a constant velocity joint, an inner ring formed with a second inner ring raceway and fitted onto the middle portion of the hub, and a plurality of rolling members rotatably provided in rows between the first and second outer ring raceways and the first and second inner ring raceways to rotatably support the hub and inner rings inside the outer ring, balls being used for the rolling members for the row with respect to the first inner ring raceway while rollers being used for the rolling member row with respect to the second inner ring raceway, so that the basic dynamic load rating of the rolling member row on the axial inside is larger than that of the rolling member row on the axial outside whereby the lives of the double row rolling member rows are equalized.

Abstract: A hub of a bicycle includes a hub shell which has two dust caps threadedly engaged to both ends of the hub shell, a sleeve inserted in the hub shell and located between the two dust caps, an axle rotatably inserted in the sleeve and has a first and a second flanges extending therefrom for a bearing disposed between the first flange and one of the two dust caps and between the second flange and the other dust cap, the axle having a third and a fourth flanges extending therefrom between the first and the second flanges, a first bearing and a second bearing respectively disposed between the first and the third flanges and between the second and the fourth flanges.

Abstract: A rolling element of a rolling bearing is made of a continuously cast bearing steel, and the center segregation rate of carbon, C/C.sub.0, of the bearing steel material satisfies a condition, 0.9.ltoreq.C/C.sub.0 .ltoreq.1.1, where C is the concentration of carbon (wt. %) in a center portion and C.sub.0 is the average concentration of carbon (wt. %).

Abstract: A hub assembly for a bicycle includes an axle having a first end and a second end each defining an outer thread formed on a peripheral portion thereof. A hub member is rotatably mounted around the axle. A first bowl member and a second bowl member are respectively mounted in the first and second end portions of the hub member. A first cone member is threadedly engaged on the first end of the axle and has a first annular groove defined on an outer peripheral surface thereof. A first roller element is rotatably received in the first annular groove and bears against the first bowl member. A first ball bearing is rotatably mounted between the first bowl member and the first cone member. A second cone member is threadedly engaged on the second end of the axle and has a second annular groove defined on an outer peripheral surface thereof. A second roller element is rotatably received in the second annular groove and bears against the second bowl member.

Abstract: An electric motor for an electric car, in which an outer ring of a ball bearing used in the non-work side of a rotating shaft is supported fixedly by a rear bracket so that the shaft is fixed in the axial direction move. A cylindrical roller bearing is used in the work side of the rotating shaft, so that the rotating shaft is secured to the inner periphery of the rear end of an output carrier of an epicycle reduction gear and the outer periphery of the rear end of the carrier is supported through a ball bearing by an intermediate bracket. An oil seal is provided for sealing between the intermediate bracket and the rotating shaft, the inner diameter of the oil seal being greater than an outer diameter of the inner ring of the cylindrical roller bearing.

Abstract: A roller bearing assembly for both radial and axial loads comprises an annular series of hollow roller bearings within associated inner and outer annular bearing races. Each race has an integral end flange which projects generally radially toward the opposite race and which defines an axially inwardly facing parti-circular annular thrust surface. The flanges are arranged at axially opposite diagonal locations so that the thrust surfaces diagonally oppose each other in the axial direction. The roller bearings have parti-circular rim surfaces which engage the thrust surfaces and with the bearings preloaded both radially and axially enhanced stiffness and running accuracy is achieved. In a second form, annular recesses provide opposite end flanges on the roller bearings with enhanced axial flexibility. Bearing assemblies may be employed in axially adjacent pairs in machine tool spindles and the like.

Abstract: The present invention provides a bearing assembly for use in a display assembly having a plurality of louvers which rotate in synchronism with each other and, in doing, displays different advertising messages. The bearing assembly includes a housing having an axis and a shaft extending axially through the housing. A pair of axially spaced bearings rotatably mount the shaft to the housing. A pair of collars are secured to the shaft so that the bearings are contained in between the collars while a Belleville washer is sandwiched between one collar and one bearing and exerts a compressive force on the bearings and a tension force on the shaft in order to compensate for bearing wear and manufacturing tolerances. A seal is secured to and rotates with the shaft. The seal includes an outer annular lip which extends over one end of the bearing housing to prevent contaminants from entering the bearing housing.

Abstract: Bearing assemblies use serial bearings in order to extend the operational speeds for the bearings. Speed distribution planetary gears are mounted upon an intermediate ring disposed between two other rings. Each of the rings has bearing surfaces which are separated from adjacent bearing surfaces by ball-bearings or other bearings. The planetary gears mesh with gear teeth upon the first and second rings so as to cause rotation of the intermediate ring at a speed intermediate the relative speed between the two other rings. The speed distribution planetary gears may be used in a serial thrust bearing assembly serial radial bearing assembly, or a serial radial thrust bearing assembly.

Abstract: A support is provided for high-precision, long threaded spindles which are extremely thin, and which are employed in systems in electronic reproduction technology, machine tools, measuring instruments, and the like. The support includes a bearing block pivotable in three dimensions through use of a hemispherical support bearing. The bearing block has two rollers thereon, one of which is slightly tiltable.