Abstract: In a rolling bearing including an inner race; an outer race; a plurality of rolling elements rollingly arranged between the inner race and the outer race; and a cage holding the rolling elements, the cage has an annular shape and a plurality of pockets which are formed at plural positions in a circumferential direction of the cage, in which each of the pockets has an opening peripheral portion which is curved to a direction of increasing a distance from a center of the rolling elements. The opening peripheral portion forms a chamfered face or a convex face. The rolling bearing can sufficiently ensure the lubrication of sliding contact portions between the cage and rolling elements so that vibrations and noises of the rolling bearing are lowered.

Abstract: A crown cage is applied to a ball bearing for high-speed rotation for a dental hand piece or the like. The cage has a cylinder formed by injection molding of a thermoplastic resin, and pockets for holding balls that are formed at a predetermined circumferential pitch in the cylinder. A first recess including a gate cutting trace at the time of molding, and second recesses for correcting rotational imbalance of the cylinder caused by the first recess, are formed in the cylinder. The recesses have almost the same shape, and are arranged at a predetermined circumferential pitch.

Abstract: The inlet diameter A of the outer side of a pocket 4a is larger than the diameter Dw of a ball 3 to be housed. The inner side section of the wall surface of the pocket 4a is drawn with a spherical surface 4a1 of the radius R of curvature {the dimension obtained by adding the pocket clearance (corresponding to one side) to the radius (Dw/2) of a ball 3}, the center of curvature of which is made point 0 (the intersection of the pitch circle of the ball 3 and the contact angle line L), the outer side section of the wall surface of the pocket 4a is drawn with a cylindrical surface 4a2 of the radius R of curvature having its center of curvature on the contact angle line L, and the spherical surface 4a1 of the inner side is smoothly continued with the cylindrical surface 4a2 of the outer side.

Abstract: A cage for a roller bearing which is free of fretting and abnormal noise, which can be manufactured at low cost, and which can be easily mounted in the bearing. The cage is formed by bending a metal sheet having pockets into a ring shape, temporarily joining its ends, heat-treating the ring thus formed to remove stress, and separating the temporarily joined portion. Such a cage tends to rotate slower than the raceway members on the driving side of the bearing, making it possible to reduce fretting. Such a cage can be used under high-temperature conditions.

Abstract: In order to reduce the sound pressure levels of abnormal sound called "squeal" and the sound of the cage that are produced during the operation of radial rolling bearings, the radial rolling bearing according to the present invention satisfies the following relations: 1.5.times.10.sup.-3 D.ltoreq.H.ltoreq.9.0.times.10.sup.-3 D and A/B=0.6-1.0, where D=diameter of the outer peripheral surface of cage 5a; H=thickness of annular gap 9 between the inner peripheral surface of flange 10 formed at an end portion of outer race 2a and the mating outer peripheral surface of the cage 5a; A=axial length of the outer peripheral surface of an end portion of the cage 5a; B=axial length of the mating inner peripheral surface of the flange 10.

Abstract: This invention discloses a roller or ball bearing assembly, a bearing finger cage and a mechanically interlocked double faced speed regulated mechanical seal arrangement. The selection of the radius of the rolling bearing diameters determines the rotational speed of the driven bearing finger cage and the rotational speed of the bearing finger cage assures the mechanical and rotational speed of the speed regulated mechanical seal wherein the relative speeds of the plurality of sealing faces are reduced proportionally by the division of applied shaft speed revolutions among the plurality of seal finished face members. The reduced relative surface speeds of sealing face members will increase the overall service life of the unique speed regulated mechanical seal and bearing assembly. The reduced relative surface speeds of sealing face members will allow greater applied shaft rotational speed than present art mechanical seals.

Abstract: A slight clearance S1 is formed between the inner surface of the outer ring 2b and the outer surface of the cage 2d. The size of this slight clearance S1 is such that it causes concomitant rotation of the cage 2d associated with the rotation of the outer ring 2b.

Abstract: A cage for a roller bearing which is free of fretting and abnormal noise, which can be manufactured at low cost, and which can be easily mounted in the bearing. The cage is formed by bending a metal sheet having pockets into a ring shape, temporarily joining its ends, heat-treating the ring thus formed to remove stress, and separating the temporarily joined portion. Such a cage tends to rotate slower than the raceway members on the driving side of the bearing, making it possible to reduce fretting. Such a cage can be used under high-temperature conditions.

Abstract: A ball bearing for use in a turbocharger comprising a housing and a rotating shaft for connecting an impeller to a turbine, the outer ring is supported by the housing therein, and the inner ring is fitted onto the rotating shaft in an axially mid portion thereof comprises an outer ring, an inner ring, a plurality of balls with a retainer between the outer ring and the inner ring, the retainer being made of a heat resistant synthetic resin, and guided by the outer ring, the bearing having a gap 14 for lubricant communication formed between the outer peripheral surface of the retainer 10 and the inner peripheral surface of the outer ring 6, and the gap 14 having a gap dimension t14 from 1.0% to 3.5% of the outer diametric dimension R of the retainer 10 at a room temperature.

Abstract: Material is first formed into a flat ring. Ball retaining pockets are then formed in the flat ring leaving bridge material between adjacent pockets. Bearing balls are inserted into the ball retaining pockets and bridge material between adjacent pockets is then reshaped such that the bridge material wraps partially around the balls, thereby retaining the balls and forming a rigid bridge between adjacent ball pockets. The bridge is proximate a line common to the centers of adjacent balls.

Abstract: A process cartridge mountable to an image forming apparatus, including a rotary member, a holding member for holding the rotary member, and a plurality of rolling members assembled between the rotary member and the holding member independently from the holding member.

Abstract: A combination of two angular type ball bearings provided in a face-to-face arrangement for use at high speed to support a substantially unidirectional axial load, such that e.g. when a loading in a leftward direction is applied to the rotating shaft during rotation, the contact angle of the left side bearing which supports this load is made larger, while the contact angle of the right side bearing which does not support this load is made smaller to avoid a drop in fatigue life and improve the endurance of a rolling bearing unit, wherein the product of the pitch circle diameter of the raw of balls and the rotating speed of the inner ring of the bearing is in the range of 700,000 to 2,000,000 mm.rpm, and the radial load is up to twice the axial load.

Abstract: A split bearing cage assembly comprising two cage parts assembled and held together by means of components in the form of dowels (3) extending through and located in apertures through both cage parts. The apertures are located and aligned such that, when the dowels are inserted into the apertures, the relative alignment between the dowels is such as to present resistance to the separation of the two cage parts so assembled. The apertures can be straight drilled holes and the dowels can be aligned so as to lie on the surface of a cone.

Abstract: A ball bearing assembly includes a ball retainer for retaining within a predetermined area each of the balls positioned between an inner race and an outer race, the retainer having grease feeding holes which extend toward the balls. Grease is fed only to those balls which actually need lubrication, and no remaining grease flows into a gap between the inner race or the outer race and the ball retainer, therefore frictional force does not increase. In the preferred embodiment, the ball bearing assembly is used to support a head and carriage assembly of a data storage disk apparatus.

Abstract: An improved type of rolling element bearing, in which race land regions are protected against wear or scoring, is described. In particular, it is shown that a coating of a hard, wear-resistant material such as titanium nitride, applied to the race land region of a rolling element bearing, is effective in preventing wear or scoring of the race land region.

Abstract: A ball guide (1) has a cage (6)which is produced by coiling a strip (8). The strip (8) is pre-manufactured and includes apertures (9) to retain balls (7), for the guidance of exterior component (2) and shaft (4) relative to each other. The side edges (15) and (16) of the strip (8) are discontinuously joined with each other by spot welds. The cage (6) can additionally be equipped with a backup ring (17). The backup ring (17) is supported by the face area (18) of the cage (6). The backup ring support surface (21) serves as a contact surface for a compression spring (19). The other end of the spring is supported by the support surface (20) of a shoulder ring (22) to return the cage (6) to a center or home position. Through the use of a strip (8), the cages (6) may be produced in different diameters and lengths through a simple process.

Abstract: A method for manufacturing ball bearing retainers by forming material into a helical coil consisting of a plurality of coils, then severing a coil of the helical coil to form a split ring, the severed ends overlapping one another. The split ring is then pressed to form a ball pocket opposite the overlapping severed ends. The remaining ball pockets are formed by successively pressing the split ring forming a pair of ball pockets, each ball pocket being adjacent a previously formed ball pocket.

Abstract: A comb separator or cage for ball bearings, including a ring that has a collar projecting axially out of one face. A groove extends around the distal face of the collar. The collar is separated into webs by spherical cavities that accommodate the balls. Lubrication ducts extend axially through the ring and the webs and open into the groove. The separator accordingly provides the lubricant with access to the balls from both sides and increases the reserve of lubricant. Preferably the grooves are approximately trapezoidal in their radial cross-section.

Abstract: A split ring antifriction bearing retainer assembled from two mating annular split rings. Each split ring has a plurality of ball pockets. When the two split rings are assembled, the ball pockets of one split ring are aligned with the ball pockets of the other split ring. The ends of one split ring are angularly offset from the ends of the other split ring.

Abstract: Roller bearing for supporting members with limited axial movement, consisting of bearing elements having confronting raceways and a plurality of rolling elements held in a cage between the raceways. One of the raceways is bounded by flanges defining contact surfaces. At least one end surface of the cage (3) has elastic segments (9), radially oriented sections (10) of which engage in a groove (11) in one of the bearing elements. In the terminal axial positions of the one bearing element (2) relative to the other bearing element (1), the radially oriented sections (10) of the cage (3) rest against the lateral surfaces (13) of the groove (11).

Abstract: A ball bearing having a cage which on its opposite axial ends has respective radially inward, obliquely axially outwardly and radially inwardly directed projections and has respective radially outward, obliquely axially outwardly and radially outwardly directed projections. Each projection extends into a cooperatingly placed and shaped annular groove defined in the raceway of the respective inner and outer rings. Each projection and the sealing lip at its end has a lateral surface which is parallel to one of the lateral walls of the groove and is spaced therefrom. The sealing lip has a second, adjacent lateral surface which is parallel to a second adjacent wall of the groove and is spaced therefrom, providing a lengthened sealing slot. The end of the sealing lip rests against a third lateral wall of the groove which extends at least approximately parallel to the bearing axis.

Abstract: A separator or cage for ball bearings has a plurality of pockets. Each pocket has an internal pocket surface toward the ball. At each half of the pitch circle of the pocket around the ball there are two approximately cylindrical first surface sections which are spaced nearer to the ball, a respective spherically curved second pocket surface section which extends over the respective pole of the ball and which has a diameter smaller than the ball, and a respective third pocket surface section which extends over the equator of the ball at each circumferential end of the pocket and which has a larger diameter than the ball. The pocket surface provides good lubrication support for the ball to minimize rubbing of the ball against the separator pocket surface.

Abstract: A two piece split bearing assembly is provided and consists of an outer race ring, an inner race ring and a plurality of antifriction elements all split in half. A male V-groove is formed on each end of one half of the outer race ring and the inner race ring while a female V-groove is formed on each end of other half of the outer race ring and inner race ring. When the two halves of the inner race ring and outer race ring are mated together with the antifriction elements between they will form the bearing assembly.

Abstract: An angular ball bearing having an outer ring, a cage mounted in the outer ring and formed at equal circumferential intervals with pockets and balls received in the pockets, and an inner ring mounted in the cage. The cage is formed on the surface of the pockets with projections to prevent the balls from coming out of the pockets. When the balls are in abutment with the projections, the diameter of the circumscribed circle of the balls is equal to or smaller than the internal diameter of the outer ring.To assemble the angular ball bearing, the balls are set in the pockets in the cage, a resilient member having substantially the same external diameter as that of the inner ring and the resilient member is pushed out with the inner ring in an axial direction to fit the inner ring inside the balls.

Abstract: A support for rotatbly supporting a portion of a shaft, specifically a drive shaft of a vehicle, is disclosed. An intermediate drive shaft support is required when three or more universal joints are embodied in a drive line between a transmission and a differential of the vehicle. An intermediate drive shaft is sufficiently long that it tends to bend or whip to an objectionable extent. The shaft support features a simplified, lower-cost bearing having fewer rolling elements in the form of balls or rollers between inner and outer races, there being from three to six and preferably four. Two rings are located on the sides of the rolling elements to uniformly circumferentially space the elements and can also provide lubricant seals. Each of the rings has a plurality of uniformly-circumferentially spaced recesses in which portions of the rolling elements are received.

Abstract: A separator or cage for a row of ball bearings designed to reduce friction on the balls. The pocket surfaces in the separator have recesses in the region of the axial "poles" of the balls which prevents contact between the balls and the separator pocket walls. Over the rest of the separator, the pocket walls are near enough to the balls to define a hydrodynamic lubricating film. Also over the rest of the separator pockets, the interior surfaces of the pockets are shaped to face the respective balls and to define a wedge-shaped slot with the ball for development of a hydrodynamic lubricating film as the balls rotate in either direction around their axes. The separator is comprised of two strips fastened together. Each strip has a complementary C-shaped pocket half depression, and the two strips joined together define the complete pockets that enclose the balls between the axial poles of the balls.

Abstract: A cage for a ball bearing comprised of two generally ridge-shaped ring parts, the respective axially projecting ridges of which are cooperatively placed to define respective pockets for the balls. The plane of separation between the two ring parts is shifted axially off the center and toward one of the ring parts. In the ring part with the axially larger ridges, the circumferentially opposite ends of the respective ridges are at least nearly flat, in the plane through the centers of the balls. The axially deepest surfaces of the ridges are also at least nearly flat, at the axially opposite sides of the cage, which is generally in the respective axial plane through the center of each ball. This prevents jamming of the balls, even in the case of defective manufacture or defective connection of the ring parts.

Abstract: A rotary body of hard material with a plastic supporter and a method of manufacturing therefor, which essentially comprises a coating film coated with the rotary body and removed after molding so as to make a clearance between the rotary body and the supporter, so that rotation of the rotary body may be allowed smoothly. The method of this invention defines steps of molding, coating of film and removing of the film so as to obtain rotation of rotary body relative to the plastic supporter.

Abstract: The annular split cage is made of two semicircular parts. Each part has roller pockets containing one or more rollers. The cross-sectional area of the end rims of each semicircular part decreases from the circumferential center of the end rim to each circumferential end of the end rim.

Abstract: A bearing comprising inner and outer rings formed of a metal and a plurality of balls formed of calcined carbon which has self-lubricating properties and hardness higher than that of the inner and outer rings and has been baked beforehand at a temperature higher than a working temperature of the bearing so as to prevent the outgassing even when used in the circumstances of high temperature.

Abstract: A cage for an antifriction bearing is an elongate strip of injection molded plastic in the form of individual cage sections. Each section has lateral sides and cross webs which together define a pocket for a respective bearing rolling element. Adjacent cage sections are connected by thin strip connecting webs which are of a length to define an open space between adjacent sections. Respective connecting hooks are defined at the cross webs of each cage section. Following separation of two sections by breaking the connecting webs therebetween, the sections can be later reconnected for defining a complete circular cage by hooking the respective hooks at the cross webs of the neighboring sections to each other.

Abstract: An annular ball retainer for a ball bearing having a plurality of balls disposed in an annular space between an inner race and an outer race comprises radially extending cylindrical wall portions defining holes for retaining the balls therein, and restraining portions extending into the holes in circumferentially opposed relationship with each other in the radial end portions of the cylindrical wall portion and supporting the circumferentially fore and rear portions of the balls. A ball bearing has a plurality of balls retained between the inner race and the outer race by the ball retainer.

Abstract: A unitary molded plastic ball cage for a thrust bearing with axially opposed races has seals molded to the cage separator that break away at assembly for independent sealing operation.

Abstract: A high-spped anti-friction bearing particularly useful for airplane power plants, the bearing having an outer ring and an inner ring. The inner ring is axially split at the rolling elements into two axial sections. The axial sections are each generally L-shaped in cross section, with one arm of each L backed against the other. To enable the bearing rings to be relatively thin walled in the radial direction and to prevent undesirable deformation thereof during the manufacture or installation, each of the rings is provided on at least one axial side and preferably on both axial sides with projecting axial extensions. Each extension preferably tapers narrower in its radial thickness axially outward. Each extension includes a cylindrical portion and a frustoconically shaped portion, usually with the cylindrical portion axially more inward and the frustoconical portion axially more outward.

Abstract: A roller bearing assembly with two rows of rolling elements includes a first ring formed in one piece to have two raceways and two independent rings each having one raceway, a device for maintaining the relative positions of the rolling elements between the rings and a device for fixing the two independent rings axially to one another. The relative positions of at least some of the rolling elements are maintained by two parts of a retention device which includes, before the bearing is assembled, one or more connecting zones in a relatively weakened condition so that they will break during assembly of the rolling bearing assembly.

Abstract: A cage for retaining rolling elements within a bearing assembly, the cage comprising an annular member of plastic having openings spaced around the member for receiving and holding the rolling elements, the surfaces of the openings contacting the rolling elements having thereon a deposited layer of a non-plastic material which is much harder than the soft plastic and is capable of resisting the embedment of loose particles therein. The layer hard material is formed by ionic spray discharge or ion implanation and consists of chromium nitride.

Abstract: A ball structure for stabilizing bearing torque in high speed, preloaded, angular contact load supporting ball bearings operating on elastohydrodynamic lubricant films. Angular momentum developed about a ball spin axis that is not parallel to the bearing rotation axis results in a continuous creep of the ball about the momentum axis, thereby allowing a long term preload and torque variation. The improved ball set is shaped so that each ball has a mass inertia about its desired spin axis that is greater than about all other axes, so as to develop a restoring moment tending to maintain rotation about a fixed axis in each ball. The ball cage is configured to maintain ball alignment during run-up and run-down of the bearing.

Abstract: A double-row, angular-contact ball bearing unit includes double sided cage, a plurality of balls maintained in first and second circular arrays by the cage and disposed between a one piece outer ring having two races and an inner ring formed of two side by side sections, each having an individual race. Angled deflectible locking fingers extend inwardly from the cage into a locking groove in the inner ring section for the first array at a location between the arrays of balls, and this section extends sideways into the region of the second array. The outer ring is undercut from the outer race having the second array to the side of the outer ring that is remote from the first array. The cage side for the first array is of the comb-type and the cage side for the second array is of the window-type.

Abstract: The ball bearing assembly includes an outer race, an inner race, and a ball cage. The cage is molded of a resilient plastic material and has features located on one rim which retains the outer race and inner race in the assembly.

Abstract: This invention relates to reduction in frictional torque of a harmonic drive type transmission apparatus having a circular spline, a flexspline, and a wave generator. A wave generator bearing of the wave generator has a retainer for holding a number of balls which roll between the inner and outer races to be in contact with an inner race and an outer race and to be separated from each other in the circumferential direction. The ball retainer has a number of radial pockets for storing the balls. Each pocket is formed into a shape forming a narrow (in the circumferential direction) opening portion at the inner race side and a wide (in the circumferential direction) opening portion at the outer race side. The balls are in contact with the opening portion at the inner race side in the pockets at the minor axis positions of a drive cam, and the balls are in contact with substantially the central portion of the pocket inner surface at the major axis positions of the cam.

Abstract: A freewheeling overrunning clutch for a bicycle, moped, and the like vehicle comprises a plurality of clutch pawls present between an outer wheel and an inner wheel which are supportable elastically on one side on the inner wheel circumference and on the other side on a plurality of inner teeth of the outer wheel. In order to provide a simple, almost noise free structure which is easy to mount, the clutch pawls pivotally supported in a flexible supporting ring positioned between the inner and outer wheels. Ends of the clutch pawls which face the inner wheel are brought into engagement with the plurality of teeth protruding outward from the inner wheel. The flexible supporting ring advantageously may simultaneously be a spacing ring for a plurality of balls of a ball bearing or bearings positioned adjacent the clutch pawls between the outer and inner wheels.

Abstract: A rubber tired wheel assembly is provided with two wheel rim blanks welded together after the installation of ball bearing assemblies in each of the rim blanks. The bearing assemblies are retained by casing caps confining the bearing outer races in wells in the rim blanks, the casing caps being projection welded to the rim blanks to locate and secure the bearing assemblies concentric with tire receiving surfaces of the rim blanks.

Abstract: The prestressed rolling bearing device comprises a cage for guiding and/or retaining a plurality of rolling elements. At least one of the rolling elements has an outside diameter larger than that of the other rolling elements. The rolling element of larger diameter is formed by a ball and the other rolling elements are cylindrical elements.

Abstract: At least a part of the inner face 41 of each pocket of a cage 4 for retaining and guiding rolling elements is formed to have a curvature of similar configuration to that of the rolling element and the center of curvature of the face is positioned to radially deviate from the pitch circle of the rolling elements at a predetermined distance.

Abstract: Novel, unitary, full complement bearing components are described which comprise a plurality of rolling elements embedded in a solid, self-supporting lubricating matrix with at least one arcuate operative surface of each rolling element exposed for rolling contact with another bearing component, the rolling elememts being in side-by-side contact or only slightly spaced from each other, and the matrix being composed of a gel obtained by thermally curing a mixture of lubricating oil and a high molecular weight polymer, and being capable of exuding lubricating oil under sliding friction in operation after insertion of the bearing component into a bearing structure in a single assembly operation. Full complement as used herein means a cageless rolling element bearing with a maximum number of rolling elements wherein no additional rolling elements can be added to the complement of rolling elements and wherein the rolling elements are in side-by-side relation.