Abstract: This invention provides a roller bearing that can provide sufficient lubrication. A needle roller bearing has a plurality of rollers each having a first and second end portion and disposed circumferentially around a shaft, a cylindrical first retainer member having a plurality of first notches each adapted to rotatably support the first end portion of each roller, and a cylindrical second retainer member located away from and opposite the first retainer member and having a plurality of second notches each adapted to rotatably support the second end portion of each roller. A plurality of voids are provided to form grease containing spaces between the adjacent rollers between the first and second retainer members.

Abstract: A rolling bearing cage comprising a first side ring (1) and a second side ring (2) that are connected to each other by crossbars (3) so that pockets (5) for receiving rolling elements (4) are formed, and lubrication grooves (6) extend in axial direction up to said first and second side rings (1, 2) on at least one of peripheral surfaces and bore sections of the crossbars (3) wherein flow channels (7) are arranged in a fractional region of the lubrication grooves (6) and are set back relative to the lubrication grooves (6) in at least one of a radially inward and a radially outward direction. In this way, lubrication of such a bearing is substantially improved.

Abstract: To provide a caged roller assembly having an excellent assemblability, capable of providing a relatively large load bearing capacity, excellent in roller guiding function, strength and accuracy, the caged roller assembly includes a cage 1 including an outer member 3 and an inner member 4, and an array of rollers 2. The outer member 3 is made up of an annular body 3a of a diameter greater than the pitch circle diameter PCD of the array of the rollers and collars 3b each formed by bending a corresponding end of the annular body 3a so as to 10 extend radially inwardly therefrom. The inner member 4 is of an annular shape having a diameter smaller than the pitch circle diameter PCD. Pockets 5 and 6 are defined in the outer and inner members 3 and 4 with the rollers 2 supported in part within the pockets 5 in the outer member 3 and in part within the pocket 6 in the inner member 4. The collars 3b may alternatively be provided in the inner member 4, rather than the outer member 3.

Abstract: A cage for use in a roller bearing having a plurality of bar portions arranged circumferentially and a pair of circular portions connecting both axial ends of the plurality of bar portions. A circular portion having a larger or equal diameter, in the pair of the circular portions, is referred to as a circular portion, the other of them is referred to as a second circular portion, and it is designed to provide, for example, such a relation as: 0.8≦(I1/I2)≦1.4, and 0.1≦(I1/I3)≦3.0 in which the moment of inertia of area for the circular portion is I1, the moment of inertia of area for the second circular portion is I2, and the moment of inertia of area for the bar portion 7 is I3. This enables to improve the strength of the cage without lowering the load capacity of the bearing to which the cage is assembled.

Abstract: A rolling bearing includes an inner ring having an outer surface, an outer ring having an inner surface, a plurality of rolling elements rotatably disposed between the inner ring and the outer ring, and a retainer for retaining the rolling elements. The retainer is made of a resin material and is positioned with respect to the inner surface of the outer ring or the outer surface of the inner ring. The retainer includes a pair of annular portions axially arranged in parallel and a columnar portion coupling the annular portions. Then, the rolling bearing satisfies the following expression: AI=LH3/dm ≧0.025 in which H is a radial length of a section of the annular portion, L is an axial length of the same, and dm is PCD of the rolling element.

Abstract: A joint type disc cage of a roller bearing in which a joint is provided at a sheared part of the disc cage so as to fit it into a single-pieced outer or inner race of the roller bearing. Owing to the joint structure of the sheared part of the disc cage, the installation of the disc cage can be easily carried out, and the installed disc cage is maintained in a circular form, so that the function of the disc cage becomes superior, and deformations, abrasions and degradations of the disc cage can be prevented, as well as ensuring the durability and safety of the roller bearing. The disc cage 1 is sheared at one place to form a sheared part 2 which forms two joint end portions 2a and 2b, so as to install the disc cage 1 into an annular installing groove 5 of the outer or inner race 4 and 4a of the roller bearing. The joint end portions 2a and 2b of the sheared part 2 are firmly engagedly coupled together, and therefore, actually the disc cage 1 performs like a non-sheared disc cage.

Abstract: A cage (14) for a split roller bearing (10) is composed of two semi-circular components (15) detachably interconnected at their ends. Each of the components (15) is itself constructed from a pair of blanks (17). Each blank (17) takes the form of a mild steel pressing with a continuous semi-circular wall portion (18) with spaced-apart projections (19, 20) at the sides. The projections (19, 20) are bent along fold lines (L, M) so that the wall portions (18) form the sides (24) of the cage and some of the projections (20) overlap at a centre region (30) of the cage and are fixed together. The rollers (11) are located in pockets (40) between side edges of the projections (19, 20).

Abstract: A tapered roller bearing comprising an outer race, a pair of axially adjacent inner races, and two cages interposed between the inner and outer races to retain two sets of rollers. The radially outer surface of each inner race has, close to the end facing the center of the bearing, a groove able to receive a respective plurality of radially inwardly projecting portions of the parts of the cages disposed close to the center of the bearing so that the cages retain the rollers on the respective inner races during the handling and assembly steps which precede mounting of the sub-units comprising the inner race, cage and rollers into the outer race.

Abstract: A cylindrical roller cage includes an outer race, and inner race, a plurality of rolling elements arranged between the outer race and the inner race, and at least one cage having a plurality of locating pockets corresponding to the number of rolling elements. The cage is ring-shaped and is arranged in a groove in the outer race or the inner race. The cage is interrupted at least at one circumferential breakpoint to define two ends of the cage at the breakpoint that form a connection having at least two cooperating elements which interact in a complementary manner by way of an undercut as viewed in the circumferential direction. The axial direction of the elements forms an angle of 15° to 75° with the circumferential direction or tangent to the circumference at the breakpoint.

Abstract: The invention relates to a window cage (1) for a needle bearing. The pockets (5) of said window cage are formed by punched out sections and by a stamping process with material displacement in a cage strip (9) which is then bent round. According to the invention, the window cage (1) is characterized in that before the cage strip (9) is bent, the opposite surfaces of the web walls of a pocket (5) are made up of three sub-surfaces (10, 11, 12) in the area of the retaining projections (7, 8). The first two sub-surfaces (10) follow a course which is parallel to a middle vertical (13) and each extend into a second sub-surface (11) at their upper end, said second sub-surface running diagonally in the direction of the central point of the pocket. Each of the second sub-surfaces then ends in a third sub-surface (12) which also runs parallel to the middle vertical (13).

Abstract: A metal window cage for a rolling bearing and supporting cylinder rollers. The cage having at least one ladder-shaped bent segment which is bent around to define the window cage. A joint is formed at adjacent cage segment ends which are interlocked in a dovetail shape lock at the segment ends. A connecting element connects the segment ends. The crosspieces at intervals along the cage segment and the connecting element at the joint are encapsulated by being molded over. Cylinder roller retaining clips are provided at the connecting element at the segment ends at the joint and also at the crosspieces between neighboring windows for cylinder rollers. The clips project radially inwardly to prevent the rollers from leaving the cage prior to installation of the cage and rollers in a bearing. The crosspieces and clips there are also molded over to retain them at the cage.

Abstract: To provide a caged roller assembly having a large load bearing capacity within a limited space, substantially free from a problem associated with separation of rollers from a roller retainer in either direction radially outwardly or inwardly of the roller retainer, and excellent in assemblability while a skewing of the roller is prevented, the caged roller assembly includes a roller retainer (1) and a plurality of rollers (2). The roller retainer (1) includes a circumferential ring body (1a) of a diameter greater than the pitch circle PCD depicted by longitudinal axes of the rollers (2), and a pair of annular collars or flanks (1b) lying perpendicular to the circumferential ring body (1a). A bearing boss (4) for each roller (2) is formed in each of the annular flank (1b) on one hand, and a bearing recess (2a) is defined in each of opposite end faces of each roller (2) for operatively receiving the respective bearing bosses (4) to thereby rotatably support the associated roller (2) in a non-detachable fashion.

Abstract: A synthetic resin cage for use in a bearing is provide to have a circular ring section and a column section with a plurality of columns, wherein only the base ends of the columns (4) are continued to the circular rig section (5) with the tip ends of the columns (4) being free, and some of the columns (4) have their tip ends connected to each other within a circumferential connecting frame portion (8), and e.g. part of the connecting frame portion (8) aces the end face of the rollers (6) to prevent the cage (1a) from dropping out of the bearing.

Abstract: A flexible bearing retaining cage has a flexible spine with bearing retaining means for rotatably retaining bearings. A flexible bearing cage assembly comprises a flexible bearing retaining cage with bearings rotatably retained. The flexible cage of the invention may be configured in a variety of shapes including, but not limited to, linear, oval, eliptical, and circular. The cage of the invention may also be cut to a desired length to fit a particular race.

Abstract: A roller bearing cage has cage rims (1,3) on both of its axial ends. One cage rim (1) has a circumferential inside groove (5). The other cage rim (3) carries at least one holding lug (7) that protrudes radially. The holding lug (7) interlocks into the corresponding groove (5) of another such cage, wherein roller bearing cages with two or more rows are formed as a construction unit, which can rotate relative to one another.

Abstract: A Sheet-metal cage for rollers of roller bearings, confronting a section having pockets for rollers and at least one side ring having a bore surface extending from one end of said section said ring-shaped section 8 of the side ring 2 carrying the bore surface 3 is connected to the sheet-metal cage by radially deformable flexing elements 7.

Abstract: A roller bearing includes radially inner and outer bearing rings and rollers disposed radially therebetween. The rollers are retained by at least one plastic guide rim that is snapped into place in one of the bearing rings. An end of the guide rim which faces the rollers is provided with a metallic butting face to resist frictional wear.

Abstract: A process for producing a sheet metal cage for roller bearings involves using a press roll to form a disk-shaped circular sheet metal blank into a tubular element having radially inwardly projecting and axially extending ribs, and stamping window-shaped pockets into the tubular element between adjoining ribs to produce a cage of a rolling bearing for receiving rolls in the window-shaped cutouts. The sheet metal cage produced by the method possesses a conically rolled outer surface and side rings arranged at opposite ends. The cage includes ridges extending between the side rings and window-shaped pockets between adjacent pairs of ridges for receiving tapered rolls. The cage also includes ribs extending inwardly from each of the ridges, with the ribs possessing tapering side surfaces.

Abstract: A profiled cage characterized in that, between crossbars (5) in peripheral direction, side rings (1, 2) comprise a slot (15) which is spaced from the ends of the pockets (6) so that a section of material (16) is formed which is retained by two adjacent crossbars (5) and which, in a radially inwards bent state, constitutes the convexity (13, 14) providing an improved contact between the end faces of the rolling elements (7) and the convexities (13, 14).

Abstract: A cylindrical roller bearing comprises an inner race, an outer race, a plurality of cylindrical rollers disposed between the inner race and the outer race, and a cage disposed between the inner race and the outer race and provided with pocket portions in which the plurality of cylindrical rollers are respectively accommodated. The cylindrical roller bearing satisfies a following relations 1.5×10−3D≦H≦9.0×10−3D and A/B=0.6˜1.

Abstract: Two axially spaced retailer end rings have axially inwardly extending blades forming circumferentially spaced roller pockets. No rigid connection of the end rings is provided. Circumferentially spaced rollers are aligned parallel to the bearing axis between the end rings such that ends of the rollers are received within the roller pockets. Abutment means limits axially outward movement of the end rings. The blades of the end rings have retention surfaces retaining the rollers radially and extend axially inwardly, parallel to the bearing axis, such that skew of the rollers is limited.

Abstract: A ball bearing has an outer race, an inner race and a plurality of balls disposed between the races. The balls are spaced on a pitch diameter to provide a rolling medium between the races to accommodate differential rotation between the races. The ball spacing is maintained by a separator having a pocket for each ball. The pockets are distributed around the pitch diameter in a random manner to reduce vibratory impulses which might be imposed by the surfaces of the races.

Abstract: A rolling bearing, having, for example, cylindrical rollers, is provided, between an inner ring and an outer ring, with a retaining structure for retaining the rollers. The retaining structure includes an annular retainer having a number of seats for click-in insertion of the rollers, and from an end edge of which projects a radially outer flange having a sliding surface cooperating in sliding manner with a radially inner surface of the outer ring of the bearing to support the annular retainer in a radially inner position with respect to the outer ring and so prevent the annular retainer from sliding against the rollers. The seats for the rollers each have a pair of axial projections for compensating any axial clearance between the rollers and the respective seats.

Abstract: A solid lubrication type self-aligning roller bearing is low in frictional torque and high in high-speed rotation performance. Only the space between fingers of the retainer protruding into the spaces between the outer ring and adjacent rollers arranged in two rows is filled with a lubricating composition manufactured by solidifying a mixture of an ultra-high-molecular-weight polyolefin and a grease to reduce the number of contact portions of the solid lubricating composition with the outer ring and the rollers. It is thus possible to considerably reduce torque and heat buildup due to sliding friction at the contact portions.

Abstract: A roller bearing has a slatted cage assembly that includes a lateral ring with axial webs to retain bearing rollers on the inside or on the outside diameter of the cage assembly. The slatted cage assembly is closed off by a cage cover mounted on the free axial ends of the webs. The slatted cage assembly prevents loss of rollers before and during assembly of when used with a full-complement roller bearing.

Abstract: Freewheel device 1 intended to be inserted between the outer cylindrical surface of an inner race 3 and the bore of an outer race 2, of the type comprising a number of wedging cams 7 held, between sliding tracks 4, 6 of the races, by a cage 8 which has windows 9 for the cams 7, and at least one holding member 11a capable of transmitting radial loadings between said races while being force-fitted onto a cylindrical bearing surface 5a of one of the races and in sliding contact with a cylindrical bearing surface 3a of the other race. There are roughnesses where the first race 2 and the holding member 11a contact.

Abstract: In a synthetic roller-bearing cage, axially separated annular bodies are connected by columnar portions arranged in the circumferential direction in order to define roller accommodating pockets. A radially outer surface of the columnar portion forms a portion of a cylindrical surface whose radius is smaller than that of the outer circumferential surfaces of the annular bodies, thus forming a lubrication-oil flow surface. A radially inner surface of the columnar portion, together with inner circumferential surfaces of the annular bodies, forms a portion of a cylindrical surface whose diameter is at least 30% that of the roller greater than that of a shaft on which the roller bearing is mounted. Grooved portions are formed in the circumferentially opposite side surfaces of the columnar portion at axially opposite end regions adjacent to the respective annular bodies.

Abstract: The needle roller bearing B in this embodiment comprises a cage 1 having a plurality of elongated window-shaped pockets 1a formed therein at predetermined circumferential intervals, and a plurality of needle rollers 2 rollably received and held in the pockets 1a. The four corners A of each pocket 1a of the cage 1 are provided with relief portions 1an4 each having a circumferentially recessed arcuate peripheral wall surface. The circumferential dimension between the circumferential top 1a41 of the relief potion 1a4 and the pocket wall surface 1a1 is set with respect to the diameter Dw of the needle rollers 2 such that 0.01.ltoreq.h/Dw.ltoreq.0.2. The provision of the relief portions 1a4 at the corners A of each pocket 1a of the cage 1 permits the relief portions 1a4 to serve as passageways for the lubricating oil.

Abstract: The pockets (10) of a cage (5) of a radial rolling bearing comprise retention elements on the inner rolling element holding member or on the outer rolling element holding member which retain the rolling elements (6) in contact with an outer raceway or an inner raceway during the mounting operation. In this way, a sag of the cylinder rollers (6) due to the force of gravity is prevented so that a shaft (4) can be pushed into the bearing without any problem.These retention elements have such a filigree and elastically deformable configuration that they are ineffective during the operation of the bearing after a few rotations so that a normal operational clearance is established between the rolling elements (6) and the cage (5).

Abstract: A pocket cage of synthetic material for roller bearings including a plurality of rollers spaced circumferentially, consisting of side rings and ribs arranged between them, whose pocket-side working faces are adapted to the roller shape, each rib having a first section arranged in the region of the arc separating the rollers in the circumferential direction of the bearing, and a second section holding the rollers in the radial direction of the bearing, characterized in that the pockets are widened at least in the region of a side ring by reduction of the holding sections.

Abstract: The needle roller bearing A comprises a cage 3 having a plurality of long window-shaped pockets 3a formed at an appointed interval on its circumference, and a plurality of needle rollers 4 rollably accommodated and retained in the pockets 3a of the cage 3. The connection radius R (radius of curvature) between the inner diameter side portion of the pocket wall surface 3a1 and the inside surface 3b1 of the annular portion 3b, and the connection radius R (radius of curvature) between the inner diameter side portion of the pocket wall surface 3a2 and the inside surface 3b1 of the annular portion 3b of the cage 3 are set to a value having a relationship of 0.2<R/Dr.ltoreq.0.5, preferably 0.3.ltoreq.R/Dr.ltoreq.0.5 with respect to the diameter Dr of the needle roller 4.

Abstract: The present invention relates to a radial roller bearing assemblies. More specifically, the invention relates to radial roller bearing assemblies including an outer ring having radially inwardly directed stop flanges, a cage comprising a pair of side rings and webs connecting the side rings, circumferentially spaced to define pockets for rolling elements, each of the side rings having radially projecting segments located at diametrically opposed locations wherein the distance (Dc) between the highest point on the segmental projection of one of the cage side rings and the diametrically opposite point of the same cage side ring is in a predetermined relation to the diameter (Dk) of the bore of the stop flange so that when the axial centers of the cage and ring are coincident, the segmental projections confront the inner radial faces of the stop flanges.

Abstract: A cage (1) for cylindrical rolling elements (5) comprising two side rings (2, 3) connected to each other by circumferentially uniformly spaced crossbars (4) so that receiving pockets (6) are formed for the rolling elements (5) is characterized in that opposing end surfaces (8) of the pockets (6) comprise projections (11) which extend inwards in axial direction and bear against end faces of the rolling elements (5) which prevents an axial offset between the rolling elements (5) and the cage (1) so that after insertion and suspension of the first rolling element (5), the cage (1) can be filled with the rest of the rolling elements (5) without their being damaged.

Abstract: In a cylindrical roller bearing assembly with flanges on the outer ring and a comb cage comprising a side ring and separating webs projecting axially from the side ring and which engage axially between the rollers, some of the webs having tabs, which project radially outwardly and engage behind the side surface of one of the flanges of the outer ring, characterized in that at least two tabs are distributed around the circumference and in that two insertion openings with a cross-sectional profile corresponding to that of the tabs are provided on the other flange for the coaxial insertion of the comb cage in the outer roller.

Abstract: A needle bearing has an outer sleeve and a needle cage. The sleeve is punched out of a flat sheet of metal and is coiled to be cylindrical. It has a window, and the needle cage has a corresponding window. The needle cage is guided circumferentially and axially inside the sleeve in such a way that the windows are aligned relative to one another so that an actuating member can pass radially through both windows. The needle bearing may be used, for example, for guiding a pressure pin for a braking mechanism of a vehicle.

Abstract: A greased lubricated rolling element bearing including an inner ring, an outer ring, a plurality of rolling elements disposed between said rings, and a cage for holding the rolling elements at a predetermined mutual spacing, has a lubricating grease composition present on the surfaces of said rings, said rolling elements and said cage. The cage is coated on at least the parts of its surface that are in sliding contact with said rolling elements, said inner ring or said outer ring, with a solid lubricant containing coating for lowering the running temperature of at least the cage. The solid lubricant containing coating preferably comprises a disulfide and/or diselenide of a Group V or VI transition metal, more preferably MoS.sub.2 and/or WS.sub.2 in combination with an organic resin such as PTFE.

Abstract: A bearing unit A comprises a main shaft gear 1 integrally having a tooth section 1a always meshed with a sub shaft gear 6 at the outer circumference, a pair of inner rings 2 fitted in the outer circumference of the main shaft 5, double-row tapered rollers 3 disposed between the raceway surface of the main shaft gear 1 and that of the inner ring 2, and a pair of cages 4 for respectively retaining each row of tapered rollers 3. The pockets 4a of the cage 4 are unequally pitched, wherein the tapered rollers 3 housed in the pockets 4a are unequally disposed at the circumference.

Abstract: The present invention is intended to dispense with the post-processing of the pocket guide surfaces while securing the precision thereof, to improve the precision of the cage and to reduce the manufacturing cost. A cage (1) according to the present invention is formed such that the inner wall surfaces of the thin-walled and thick-walled portions (1a) and (1b) are continuous with each other through taper surfaces (1d) inclined toward the centers and the guide surfaces (1c1) of the pocket (1e) are shearing surfaces q on the pitch circle PCD.

Abstract: Two end rims are spaced along a common axis and are connected by crossbars such that elongated pockets are formed for rollers. Piloting pads extend axially along the crossbars and a portion of the end rims and extend circumferentially along a portion of the ends of the roller pockets. A radially outward surface of the end rims is recessed with respect to the piloting pads and provides a lubrication channel connecting the roller pockets.

Abstract: The invention relates to machine engineering and, more particularly, to roller bearings. The roller bearing has an outer ring with a cylindrical raceway and protrusion-free inner surface. An inner ring has a pair of unitary beads, or sides that extend inwardly toward the outer ring. A separator is mounted in an annular space between the inner ring and the outer ring. One of the embodiments provides for the use of one or more additional removable ring beads fitted in the raceway of the outer ring. The removable ring beads can have a rectangular or trapezoidal cross section.

Abstract: A cage for roller bearings, comprising a pair of spaced rings (3, 5) having confronting raceways (R.sub.i, R.sub.o) for plurality of rolling elements (6), the cage comprises at least one annular side ring (8), a plurality of webs (9) extending from said side ring (8) which are circumferentially spaced to define pockets (P) for the rolling elements (6). The free terminal ends of the webs remote from the side ring (8) have projecting portions (11, 12) which partially enclose the rolling elements (6). Each of said webs (9) has an elongated radial through slot (10) dividing each of said webs into web portions (9', 9") which are displacable inwardly relative to one another to permit insertion between the rolling elements (6).

Abstract: A crankshaft bearing arrangement for a two cycle crankcase compression internal combustion engine that provides a low frictional resistance and corrosion resistant. Electro galvanic corrosion is precluded by the utilization of an electrical insulating substance and by minimizing the electrical potential differences between the materials of the bearing.

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: An antifriction bearing having one or two rows of rolling bodies has at least one guide ring guided on the outside ring race for guidance of the rollers and/or of the separator. The guide ring comprises two partial circumference ring segments which are arranged loosely between or adjacent one or each of the rows of rolling bodies and are held in form-locked manner in the spherical surface of the outer ring due to resilience of the ring segments.

Abstract: The invention provides a roller bearing apparatus including an inner ring member supported for rotation on a sleeve, an outer ring member, rollers in the raceway space defined between the inner and outer ring members, and a guide member having roller seats against which inboard end portions of the rollers are seated. To promote roller precession when the roller bearing apparatus is used in an oscillatory application, the roller seats are slanted or pitched in a circumferential direction and at least the inboard end portions of the rollers are provided with non-planar, and in one embodiment frustoconical, end faces. Cooperation between the non-planar end faces of the rollers and the pitched roller seats controls the mean skew axes of the rollers to promote consistent roller precession through the bearing load zone, and enables increased freedom of movement of the rollers to minimize friction. This increases the life of the roller bearing by reducing roller related failures.

Abstract: A plurality of wedge-shaped separator elements are pivotably mounted on a retainer ring such that the separator elements may space rollers of a roller bearing circumferentially. The separator elements include a narrow portion for engagement with a thrust flange of one of the inner and outer bearing rings to restrain the bearing retainer in the axially outward direction and include a wide portion for engagement with the rollers to retain the rollers in one of the radially outward and radially inward directions. The retainer ring engages the rollers to retain the bearing retainer in the axially inward direction.

Abstract: A self aligning roller bearing with retainer comprises an outer ring having an outer ring raceway in a shape of a spherical concave surface with a single center, an inner ring having a pair of inner ring raceways opposite to the outer ring raceway, a plurality of convex rollers provided rotatable between the outer ring raceway and the inner ring raceway, and a pair of retainers comprising a main portion formed in a hollow cylindrical frustum shape and having a plurality of crossbars, an outwardly flanged portion extending radially outward from the larger diameter end of the main portion and an inwardly flanged portion extending radially inward from the smaller diameter end of the main portion, and connected to the outwardly flanges portion by the crossbars so as to form a plurality of pockets each defined by two of the crossbars and outwardly and inwardly flanged portions to receive one of the convex rollers, the outwardly flanged portion having protrusions each protruding towards the pocket so as to rub agai

Abstract: A structure for retaining a plurality of roller bearings within a bearing cup prior to being assembled on a trunnion of a universal joint assembly is disclosed. The bearing cup is generally hollow and cylindrical in shape, including a side wall defining an inner circumferential surface and a closed end defining an inner end surface. A plurality of roller bearings is disposed within the bearing cup adjacent to the inner cylindrical surface thereof. A first roller bearing retainer is disposed adjacent to the open end of the bearing cup, while a second roller bearing retainer is disposed adjacent to the closed end of the bearing cup. Each of the roller bearing retainers includes a generally flat annular plate having a plurality of relatively short projections extending therefrom. Preferably, the projections are formed integrally with the annular plate and extend from the inner peripheral edge generally perpendicular to the plane defined by the upper surface thereof.

Abstract: A roller bearing includes an outer ring having a raceway formed on its inner periphery, a plurality of rollers arranged along the raceway at predetermined intervals, and a solid lubricant filling the spaces between the adjacent rollers. The rollers and the solid lubricant form a one-piece body. The problems of large friction between rollers and the skewing of rollers are solved and it is possible to increase the load-bearing capacity of the bearing by using a large number of longer rollers.

Abstract: A roller bearing apparatus including inner and outer rings defining a pair of raceway spaces, a plurality of rollers arranged in oppositely axially inclined rows each occupying one of the raceway spaces, and a guide member. The guide member includes a ring between the roller rows and oppositely extending shortened prongs or stubs extending only a short distance between the rollers so as not to take up space that otherwise could be used for one or more additional rollers. The pocket bottoms are angled to skew the rollers to promote roller precession or indexing. Alternatively, the guide member can include a reduced number of larger prongs to replace one or more of the stubs.