Abstract: A holder of a tapered roller bearing is made of a resin, has a first gap between an axially inner end surface of a small-diameter-side annular part and small-diameter-side end surfaces of tapered rollers, has a second gap between an axially inner end surface of a large-diameter-side annular part and large-diameter-side end surfaces of the tapered rollers, and is provided to be capable of moving within a prescribed range along the axial direction. The surface of the axially inner end surface of the large-diameter-side annular part is rough, the large-diameter-side annular part is provided with one or more grooves which are oil-holding parts that hold the lubricating oil, and ends of the grooves are positioned to be capable of coming into contact with the tapered rollers.

Abstract: A rolling bearing including a cage is provided. The cage includes, on its outer peripheral surface, a plurality of ridges protruding radially outwardly, and circumferentially spaced apart from each other. The ridges extend in the axial direction or in an oblique direction or directions relative to the circumferential direction. The ridges are capable of coming into contact with the inner peripheral surface of the outer ring through lubricating oil.

Abstract: A bearing cage for retaining rolling elements of a rolling element bearing, the bearing cage constructed from a sheet metal element. The cage having at least one cage pocket configured to receive at least one rolling element. The at least one cage pocket is formed by two abutting cage bars that extend axially between a first and a second axially displaced ring element. At least one of the cage bars includes a first portion. The first portion is constructed by folding a part of the sheet metal element such that the first portion extends in a radial direction of the cage and such that an axially extending fold is provided on the cage bar. A rolling element bearing and a method of producing the bearing cage is also provided.

Abstract: A thrust bearing cage including an improved lubrication feature is disclosed. The thrust bearing cage includes a first rim and a second rim with a plurality of crossbars extending therebetween to define rolling element pockets. Each crossbar of the plurality of crossbars includes: a first radial flange extending from the first rim; a second radial flange extending from the second rim; and a medial radial flange connecting the first radial flange and the second radial flange. The medial radial flange is axially offset from the first radial flange and the second radial flange. At least one of the first radial flange, the medial radial flange, or the second radial flange includes a protrusion defining at least one ramped surface. The ramped surface creates a hydrodynamic effect, which guides the thrust bearing cage away from an adjacent surface, and ensures that a lubricated state is maintained.

Abstract: A bearing cage for retaining rolling elements of a rolling element bearing. The bearing cage is made of a sheet metal element. The cage provides at least one cage pocket configured to receive at least one rolling element. The at least one cage pocket is formed by two abutting cage bars that extend axially between a first and a second axially displaced ring element. The bearing cage is made of a one-piece sheet metal element and the first and the second ring element is undivided in its circumference without any joints or connections for joining an interrupted ring element. Furthermore, a rolling element bearing and a method of producing the bearing cage is provided.

Abstract: A retainer of a tapered roller bearing includes crossbars having guide surfaces which circumferentially contact the tapered rollers. The crossbars are also formed with first recessed surfaces and second recessed surfaces which are both in the form of cutouts circumferentially recessed from the respective guide surfaces to reduce stirring resistance and shear resistance of oil. To reduce the contact lengths between the rolling surface central portions of the tapered rollers and the guide surfaces, the guide surfaces are smoothly convex in the longitudinal direction of the tapered rollers.

Abstract: A cage for a thrust bearing assembly is disclosed. The cage includes a radially inner flange, a radially outer flange, and a plurality of crossbars extending therebetween that define a lower portion of a plurality of rolling element pockets. The radially inner flange includes a first plurality of retention bars extending radially outwardly, and the radially outer flange includes a second plurality of retention bars extending radially inwardly. The first plurality of retention bars and the second plurality of retention bars each partially define an upper portion of the plurality of rolling element pockets.

Abstract: In a bearing device 1 which is assembled to a pinion 3 of a rack-and-pinion type drive mechanism 2, the bearing device 1 has a plurality of needle rollers 13. A plurality of pin rollers 9 are supported by an inner surface cylindrically formed by the plurality of needle rollers 13. Each of the plurality of needle rollers 13 is held at both ends 13a, 13b in an axial direction R by a retainer cage 14, so as to prevent the needle rollers 13 from being skewed against the axial direction R.

Abstract: A roller bearing cage, including: an axis of rotation; a body including a plurality of bars, each bar having a length, in a first axial direction parallel to the axis of rotation, a height, in a radial direction orthogonal to the axis of rotation, less than the length and a width, in a circumferential direction, less than the height; and a plurality of spaces, each space circumferentially disposed between a respective pair of circumferentially adjacent bars and arranged to receive a respective roller.

Abstract: A radial cage for receiving and guiding cylindrical rolling elements includes first and second axially spaced side rings and a plurality of axial bridges therebetween, the axial bridges defining a plurality of pockets for receiving the cylindrical rolling elements. Each of the plurality of axial bridges includes a first axial side section connected to the first side ring and a second axial side section connected to the second side ring and a center axial section, and the center axial section is connected to the first side section via a first oblique intermediate section and to the second side section via a second oblique intermediate section, and the first axial side section includes a first region having a first material thickness and a second region having a second material thickness greater than the first material thickness.

Abstract: A taper roller bearing includes: an inner ring; an outer ring; taper rollers; and a cage. A first sliding surface is provided in at least one of annular portions of the cage to slide-contact end surfaces of the taper rollers so as to axially position the cage by the end surfaces of the taper rollers. Second sliding surfaces are provided in the pillar portions to slide-contact an outer ring raceway surface so as to radially position the cage by the outer ring raceway surface.

Abstract: A method for producing a holder in which sagging is suppressed in a bent part to be formed into a flange portion, without using bulge forming and a split mold that restrains the inside of a working target article; and a holder. An upper punch presses and bends one end portion of a working target article inward, whereby a flange portion is formed in the one end portion. A smaller-diameter portion of the working target article is restrained from the inside and outside by a lower punch and split mold portions. Then, a peripheral surface portion of a convex portion of the upper punch receives the end portion of the working target article and applies an outward pressure to the end portion. A bent part is pushed toward a larger-diameter portion restraining part of a split die, so that sagging is prevented from occurring in the bent part.

Abstract: A rolling bearing comprising a rolling bearing cage having a plurality of rolling element pockets arranged in at least one row to receive at least one row of rolling elements, two lateral rings and a plurality of crosspieces connecting the two lateral rings, such that the plurality of rolling element pockets are formed between the plurality of crosspieces, and at least one empty pocket. The rolling bearing cage includes fewer rolling elements in the at least one row than the number of rolling element pockets, such that the at least one empty pocket does not receive a rolling element. A method for producing a rolling bearing cage is also provided.

Abstract: A roller bearing assembly includes a plurality of rollers (122), a cage (114) including a plurality of slots (118) for positioning the plurality of rollers, an outer race (134) positioned radially outside the plurality of rollers and the cage, and means (126, 130, 138) for retaining axial alignment between the cage and the outer race provided integrally with at least one of the cage and the outer race.

Abstract: An eccentric bearing for an electrohydraulic piston pump assembly of a vehicle brake system includes a shaft configured to be driven in rotation about its axis, a bearing ring which is eccentric relative to the shaft, and rolling bodies between the bearing ring and the shaft. The rolling bodies have different diameters corresponding to a varying width of a gap between the bearing ring and the shaft. When the shaft is driven in rotation, an eccentricity of the bearing ring revolves around the shaft at half of the rotational speed of the shaft and drives pump pistons to perform a reciprocating movement. A rolling body cage is open between the two largest rolling bodies. The rolling body cage loads the rolling bodies into the tapering gap and ensures that the rolling bodies revolve on the shaft when the shaft is driven.

Abstract: A method for producing a holder in which sagging is suppressed in a bent part to be formed into a flange portion, without using bulge forming and a split mold that restrains the inside of a working target article; and a holder. An upper punch presses and bends one end portion of a working target article inward, whereby a flange portion is formed in the one end portion. A smaller-diameter portion of the working target article is restrained from the inside and outside by a lower punch and split mold portions. Then, a peripheral surface portion of a convex portion of the upper punch receives the end portion of the working target article and applies an outward pressure to the end portion. A bent part is pushed toward a larger-diameter portion restraining part of a split die, so that sagging is prevented from occurring in the bent part.

Abstract: A cage for a rolling element bearing and a method for the production thereof. The cage has either an increased number of rolling elements or improved load-bearing capacity. A The cage has a plurality of cage pockets for receiving the rolling elements, two side rings and a plurality of cross-ribs. The cross-ribs connect the side rings such that the cage pockets are formed. The cage pockets have milled-out or drilled-out corner regions. hereinafter collectively referred to as milled-out corner regions, The corner regions, in a cutting plane perpendicular to the axis of rotation of the cage, have a radial milling course in the direction of the axis of rotations. The milling course, at least in a partial section, is configured at an incline with respect to a radial vector placed through the partial section and the axis of rotation, and is configured at an incline in the direction of the cage pocket.

Abstract: A radial cage in which roll forming is carried out in such a manner that straight side sections of all axial crossbars continue to have at least approximately a material thickness of a starting material for the radial cage, while side rings of the radial cage and axial center sections of the axial crossbars are implemented by rolling down during roll forming to each have material thicknesses that are smaller than the material thickness of the straight side sections and that reduce their centrifugal mass.

Abstract: The bearing cage for roller bearings has an inner ring, an outer ring, and a plurality of cage bars extending between the inner ring and the outer ring so as to form a plurality of pockets. At least one of the inner ring and the outer ring has a formed ring flange protruding inwardly into the pockets. The pockets have of least one curved end with a radius or a straight end with large radii so that the pockets extend under the ring flange. The formed ring flange provides radial guidance to the ends of the rolling elements, which also aids in reducing the possibilities of stress risers from forming, causing fatigue and ultimately failure of the bearing cage.

Abstract: A cage for a radial roller bearing of limited width availability, which has a first flange, a second flange spaced from the first flange, and cage bars that extend between the first flange and the second flange so as to form a plurality of roller pockets. The cage bars, together with the first flange and the second flange form an S-shaped or a Z-shaped contour. The cage aids in properly guiding roller elements in bearings of limited widths. The cage prevents rolling elements from overrunning or under running the cage bar. The cage also provides for proper contact of the rolling elements to push the cage around the radial bearing. Further, the cage allows for inner retention, outer retention, or both inner and outer retention of the rolling elements.

Abstract: A taper roller bearing includes an inner race, an outer race, taper rollers arranged so as to be rollable between the inner and outer races, and a retainer for retaining the taper rollers, in which a flange portion is provided only on the radially larger side of the inner race. The retainer includes a radially-larger-side annular portion including a hook portion. The hook portion effects hooking so that the flange portion of the inner race is maintained in an assembled state. In a neutral state, the hook portion is kept out of contact with the flange portion. A guide surface portion for guiding the inner race to be incorporated is provided on a radially inner end portion of an outer surface of the hook portion.

Abstract: A rolling bearing retainer (1) for a cylindrical roller bearing is characterized by the fact that a web center part (4.2) is provided with a respective projection (4.3) on a circumferential side, and these projections (4.3), by twisting this web center part (4.2) about its longitudinal axis (4.5), are formed into holding lugs which in each case separate two adjacent cylindrical rollers (6) from one another and prevent the latter from falling out in a radial direction.

Abstract: A diameter dimension of a chamfer 11 which is formed on axial end faces of a cylindrical roller 8 which is retained in each pocket 7 of a cage 2 whose axial positioning is realized by a roller guide at a portion which lies closer to an outside diameter side thereof is made such that a central flat surface 9 which lies on an inside diameter side of the chamfer 11 is not exposed from an external surface of an outside diameter side flat plate portion 14. Then, a difference between a minimum value ?B of an amount by which the cylindrical roller 8 projects from the external surface of the outside diameter side flat plate portion 14 and a dimension W11 of the chamfer 11 with respect to a diameter direction thereof is made smaller than a thickness T2 of the cage 2.

Abstract: The invention relates to a cage (1) for rolling bodies (6), in particular a needle cage, consisting of two side rings (2, 3) spaced apart from one another in the axial direction and having end faces, the side rings (2, 3) being connected, to form pockets (5) receiving rolling bodies (6), to transverse webs (4) spaced apart from one another uniformly in the circumferential direction. The cage (1) is distinguished in that the end faces at least partially follow a course which deviates at an angle of inclination (?) of 90° with respect to a bearing axis (9). This ensures a particularly effective lubrication between the end faces of the cage (1) and the connecting structure, this lubrication being important particularly in the case of bearings subjected to high loads.

Abstract: An end faced on an outer side in a radial direction of a small diameter annular portion of a retainer is disposed on an inner side in a radial direction of a pitch conical face of a taper roller and an end face on an inner side in a radial direction of a large diameter annular portion is disposed on an outer side in the radial direction of the pitch conical face. Further, a portion of the small diameter annular portion opposed to a small diameter end face of the taper roller is disposed on the inner side in the radial direction of the pitch conical face and a portion of the large diameter annular portion opposed to a large diameter end face of the taper roller is disposed on the outer side in the radial direction of the pitch conical face.

Abstract: A double-split cage includes a strip-shaped metallic sheet curved into a semi-cylindrical shape and having several pockets for accommodating a single row of rollers arranged in the circumferential direction. The strip-shaped metallic sheet has two arch portions separately arranged in the axial direction and includes pillar portions arranged at several positions of both arch portions in the circumferential direction. Both arch portions have protrusions protruding from the pillar portions at both end portions in the circumferential direction, and a forward end portion of each protrusion is chamfered at a corner outside in the axial direction. Length of the chamfered portion in the circumferential direction is larger than the protruding length of each protrusion.

Abstract: A cage for cylindrical rolling-contact elements, in which two rolling-contact elements that are in contact with one another at their lateral surfaces are arranged in series in the circumferential direction in a pocket and in which each of the two rolling-contact elements is guided parallel to a cage axis, includes a web connecting adjoining side rings to one another, there being stub-shaped webs on the side rings in the center of the pockets, between the two rolling-contact elements, the webs projecting partially into the pocket between the rolling-contact elements. The webs comprise sections that extend parallel to the cage axis, lie partially inside and partially outside the pitch circle and are connected to one another by sections that extend obliquely to the cage axis. The stub-shaped webs have no contact with the rolling-contact elements during rotation of the cage.

Abstract: In a cage for cylindrical rolling bearings (5), which cage is rolled out of a sheet metal strip (12), the pockets (4), as seen in a top view, have, in a profiled, punched and unbent state of the sheet metal strip (12), a curved shape in a region of the inclined sections (8, 9), so that an axially inner, first convex curve B1 merges into an outer, second concave curve B2. This pocket contour of the invention makes it possible to obtain a separation between the retention of the rolling elements and the contact region of the rolling elements in the cage solely by the punching of the pockets in combination with a subsequent bending of the cage strip into a finished cage.

Abstract: A needle case or needle bush produced without cutting for a thin-walled needle bearing is produced without cutting from a cold-rolled strip, which is a heat-treated steel which has the disclosed chemical composition and the disclosed mechanical characteristic values. After a heat treatment, a surface hardness of 860 to 880 HV and a core hardness of 550 to 650 HV are achieved.

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 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: 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: A retainer for a needle roller bearing which can prevent a film of lubricating oil from being broken due to its needle roller retaining claws and thus prevent peeling of the needle rollers. Outer-diameter claws and inner-diameter claws are provided on roller guiding surfaces on both sides of each crossbar portion of the retainer to retain the needle rollers in pockets defined between the adjacent crossbars. In the case of an outer-diameter guide type retainer, the outer-diameter claws are provided at a stepped portion formed on the outer-diameter surface of each crossbar. In the case of an inner-diameter guide type retainer, the inner-diameter claws are provided at a stepped portion formed on the inner-diameter surface of each crossbar.

Abstract: To provide good cage guidance in a window cage for a preferable flangeless spherical roller bearing in order that the bearing might achieve higher loads, the cage includes two annular axially spaced apart ribs and transverse ribs that extend between the annular ribs and define cage pockets. At least one and preferably two and preferably opposite pockets of the cage are loading pockets. The annular ribs are radially outside the pitch circle of the bearing, but at the loading pockets, those ribs are recessed inward nearly on the pitch circle of the bearing and preferably outward thereof about the thickness of the rib material. The angle between the center of the loading pocket and the adjacent pocket is larger than the angle between the centers of other adjacent pockets to facilitate loading of the loading pockets.

Abstract: In a self-aligning roller bearing providing an outer race, an inner race, a plurality of barrel-shaped rollers, and a pair of cages, guide surfaces formed on outward flange portions of the cages for guiding the barrel-shaped rollers are caused to come closer to ends of the barrel-shaped rollers, so that the barrel-shaped rollers can be guided without fail even if an axial load is received. Therefore, the barrel-shaped rollers are prevented from being skewed, from increasing in torque required for rotating the barrel-shaped rollers, and from seizing up the barrel-shaped rollers.

Abstract: A flat strip of metal is formed to provide a depressed center relief portion between two edge portions. Depressions are formed in the two edge portions and center slots are pierced across the center relief portion such that roller receiving slots are formed with slot end depressions at both ends of the roller receiving slots. The partially formed bearing cage is then formed into a circular hoop such that the edge portions form rings at the axial ends of the circular hoop. The resulting roller bearing cage of the present invention may also be formed by other methods.

Abstract: A strip of metal is pierced intermediate the edges thereof to form slots for rollers and is bent adjacent the edges to form flanges. Each bend intersects the slots such that the slots wrap around the bends into the flanges. The strip of metal is then formed into a circular hoop such that the flanges form axially spaced end rims to retain the rollers axially. Crossbars between the slots are offset radially in a sigma configuration to retain the rollers radially. Edges of the slots may be specially formed to facilitate flow of lubricant through a roller bearing.

Abstract: A strip of metal is pierced intermediate the edges thereof to form slots for rollers and is bent adjacent the edges to form flanges. Each bend intersects the slots such that the slots wrap around the bends into the flanges. The strip of metal is then formed into a circular hoop such that the flanges form axially spaced end rims to retain the rollers axially. Crossbars between the slots are offset radially in a sigma configuration to retain the rollers radially. Edges of the slots may be specially formed to facilitate flow of lubricant through a roller bearing.

Abstract: A roller bearing cage is made of a bent strip of sheet metal having abutting ends that are connected to one another, the cage being comprised of two end rings and a cage frame surrounding the windows, the windows retaining and guiding the rollers. In order to permit the manufacture of rolling element bearing cages of different reference circle diameters while using only one tool for rolling elements with a specific diameter d, the center distance between adjacent the cage windows in the circumferential direction is .pi.d/2.

Abstract: A roller bearing cage is made of a bent strip of sheet metal having abutting ends that are connected to one another, the cage being comprised of two end rings and a cage frame surrounding the windows, the windows retaining and guiding the rollers. In order to permit the manufacture of rolling element bearing cages of different reference circle diameters while using only one tool for rolling elements with a specific diameter d, the center distance between adjacent the cage windows in the circumferential direction is .pi.d/2.

Abstract: A support bearing assembly for supporting a jet aircraft engine high speed rotor shaft where an operating temperature of up to 1500 degrees F. is involved and the bearing unit is exposed to such temperature condition, includes a rolling elements-inner and outer race bearing unit capable of operating at such temperature level without adverse effect and, e.g., these components being comprised of ceramic matrix composites. Since such a bearing unit will have different thermal growth than its metallic support housing, the bearing unit is supported in pairs of opposed cylindrical cages, there being an inner cage pair for holding the inner race and an outer cage pair for holding the outer race. The cages have flange means at one end and circularly, spaced support arms extending from the flanges a distance to cage opposite end locations where the support arms are formed as finger structures which interfit with the race members, the spacing between the support arms defining slots in the cage bodies.

Abstract: A radial rolling bearing with an outer race ring having at least one radial flange which engages in a peripheral groove of a cage in which rolling elements arranged in pockets are lodged, characterized in that the radial flange delimits an opening through which the cage, radially offset with regard to the bearing axis, can be inserted axially into the race ring by parallel displacement.

Abstract: A roller bearing cage for cylindrical rollers comprising two parallel end rings (1) connected by a plurality of crossbars (2) distributed over the circumference of the cage to form pockets (3) for accommodating two adjacent rollers (4) in each pocket, the crossbars (2) being provided with holding projections (5) in the area of their inner and outer border edges projecting into the pockets (3), the cage being made of a flat sheet metal strip rolled into a round shape and welded at the abutment point (6) where the ends of the strip meet in the area of a pocket (7) being dimensioned to accommodate a single roller (4).

Abstract: A roller cage for rollers with end surface depressions has holding projections preformed in the side ring sections thereof in the region of the pockets, in order to avoid a change of diameter of the holding projections and a change of the pocket shape during the shaping of the holding projections. The side ring sections are provided with recesses in the region of the edge of the depressions of the rollers so that no material stretching can occur in these parts of the side ring. The guide projections serve to axially guide the roller.

Abstract: A single retainer retains two sets of circumferentially separated rollers. The retainer is made from flat metal stock. The retainer includes a pair of axially separated end rings interconnected by circumferentially separated axially extending cross-bars, and an axially centered ring. The axially centered ring may be an integral center ring or a separate metal band which has been attached to the cross-bars by methods such as welding.

Abstract: The invention pertains to a process and a device for the production of pocket cages for roller bearings. The starting material is a cup-shaped blank or a tube, and the lateral surfaces of the cage are cut at the same time that the rolling element pockets are stamped out. In this way a work step on a separate processing machine is eliminated.

Abstract: A roller bearing comprising an annular outer track and a roller cage for itioning shoulderless, self-aligning roller bearings for high loads is disclosed. The cage is a window cage. It supports two annular rows of bearing rollers so that the inner end surfaces of the rollers are almost in engagement with each other. The cage is circular, but is elastically deformable for insertion in the bearing. The axially inner cage ring part between the two rows of rollers extends parallel to the race of the outer ring and lies practically against it. Over the entire circumference and across the entire width of the inner cage ring part, its outer surface is provided with spaced apart indentations which may include lubricant in them. The axially outer cage ring parts extend radially to the inner bearing race ring. The cage is preferably made of a hardened but elastic steel plate and is a single piece for at least one of the annular rows of rollers.