Race, Liner Or Sleeve Patents (Class 384/569)
  • Patent number: 8210753
    Abstract: A gap between a bearing box and a roll portion and so on which are not used for absorbing an expansion of a roll are reduced, and by increasing axial widths of the bearing box and cylindrical roller bearing for that, a loading capacity of the cylindrical roller bearing is enhanced. A first side face 13A of the bearing box 13 located at one side in the axial direction is disposed outwardly with respect to a central line Y2 between two roll portions 22A, 22B than a second side face 13B located at an other side in the axial direction, and a gap a1 between this first side face 13A and the roll portion 22A opposed thereto is made smaller than a gap a2 between the second side face 13B and the roll portion 22B opposed thereto.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: July 3, 2012
    Assignee: JTEKT Corporation
    Inventor: Takeharu Uranishi
  • Patent number: 8201334
    Abstract: A roller bearing assembly includes an annular outer ring with first and second outer ring shoulders that define a first raceway in the outer ring. An annular inner ring may be disposed substantially concentrically within the outer ring, the inner ring including a base portion and first and second inner ring shoulders that extend from and are integral with the base portion to define a second raceway in the inner ring. A plurality of rolling elements may be arranged between the inner ring and outer ring and within the first and second raceways to rotatably couple the outer ring to the inner ring.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: June 19, 2012
    Assignee: Honeywell International Inc.
    Inventors: Brent Bristol, Dori Marshall, Craig M. Goodman, Louie Timothy Gaines
  • Patent number: 8177438
    Abstract: A double row thrust roller bearing includes a pair of inner and outer cages arranged radially in two rows in separate coaxial relation, each cage including an annular inner peripheral wall, an annular outer peripheral wall, a plurality of pillar portions interconnecting the annular inner and outer peripheral walls at intervals in a circumferential direction thereof, and a plurality of pockets each formed between the adjacent pillar portions. Rollers are rotatably held and retained respectively in the pockets. The annular inner peripheral wall of the inner cage is guided by an annular flange formed at an inner peripheral edge of one race, and the annular inner peripheral wall of the outer cage is guided at an inner periphery thereof by the annular outer peripheral wall of the inner cage.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: May 15, 2012
    Assignee: JTEKT Corporation
    Inventor: Yoshitaka Waseda
  • Patent number: 8177435
    Abstract: A drawn cup needle roller bearing 30 having a seal ring comprises: a shell 31 having a raceway surface 31a on an inner circumferential face and also having inward flange portions 31b, 31c in both end portions; a cage 32 having a plurality of pockets 32a in a circumferential direction and worked by cutting; a plurality of needles 33 retained in the pockets 32a so that the needles freely rotate along the raceway surface 31a; and a seal ring 34, the shape of which is cylindrical, arranged inside the shell 31 between an end face 32b of the cage 32 and the inward flange portion 31b. The seal ring 34 composes a floating seal and is formed by press working. Due to the foregoing, an excellent dimensional accuracy can be provided and a quantity of lubricant passing through the bearing can be controlled.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: May 15, 2012
    Assignee: NSK Ltd.
    Inventors: Tomohiro Kudou, Kazuto Kobayashi, Keiichi Horino, Kiyoshi Ootsuka, Isao Shintou
  • Publication number: 20120114279
    Abstract: A roller for a rolling bearing has an outer surface revolving about an axis of symmetry and a lateral face arranged on either side of the outer surface. The roller is intended to rotate in the bearing about the axis of symmetry while bearing on the outer surface. The roller has two recesses produced respectively on one lateral face extending along the axis of symmetry. The recesses have an opening formed on the lateral face and are separated axially by a material bridge. The recesses are defined by a lateral revolving surface, the shape whereof is divergent tapered from the opening to the material bridge.
    Type: Application
    Filed: October 5, 2011
    Publication date: May 10, 2012
    Applicant: NTN-SNR ROULEMENTS
    Inventor: Olivier Blanchin
  • Patent number: 8172464
    Abstract: A tapered roller bearing achieves improvement in manufacturability and a longer life. The tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers disposed between raceways of the inner ring and the outer ring. A cage holds each tapered roller. A shoulder section that receives a large end face of the tapered roller is provided on a large-diameter side of the inner ring so as to project towards an outer-diameter side. A raceway that reaches from the shoulder section to the small diameter end is formed. An engaging section that engages with the shoulder section on the inner ring is provided on a large-diameter side of the cage so as to project towards an inner diameter direction. The engaging section is disposed such as to fit within a width of a corresponding pocket when viewed from an axial direction.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: May 8, 2012
    Assignee: NTN Corporation
    Inventor: Tomoki Matsushita
  • Patent number: 8166657
    Abstract: A steel retainer (3), which retains needle rollers (2), is formed from a steel plate containing 0.15 to 1.10% by mass of carbon. After being formed, the steel plate is subjected to induction heat treatment which includes induction hardening and induction tempering. Such heat treatment can be carried out efficiently in a short period of time, using compact treatment facilities, even in small-lot production. The retainer (3) thus formed is sufficiently resistant to wear and surface damage, and is high in fatigue strength and fracture strength as a whole.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: May 1, 2012
    Assignee: NTN Corporation
    Inventors: Shinji Oishi, Yasuyuki Watanabe
  • Publication number: 20120045159
    Abstract: A bearing arrangement is provided having a shaft (1) with a bearing journal (2, 3), and a needle bearing (9) which is arranged thereon and has a cage (16) and needle rollers (11) accommodated in the latter. The bearing journal is provided with a hardened and precision-machined inner raceway (10) for the needle rollers and steps back radially in relation to axial shoulders (12, 13) of adjacent shaft sections (4, 5, 6, 7), and the axial shoulders serve as run-on surfaces for the axial end sides (14, 15) of the cage fitted between the axial shoulders.
    Type: Application
    Filed: May 28, 2010
    Publication date: February 23, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Stefan Hess, Peter Solfrank, Patrick Ullmann, Alexander Kern
  • Patent number: 8113717
    Abstract: Surfaces of the raceway grooves of the outer and inner rings, a surface of each ball and all surface of the cage are coated with titanium oxide. In other words, hydrophilic layers made of titanium oxide are formed on the surfaces of the raceway grooves of the outer and inner rings, the surface of each ball and all surface of the cage.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: February 14, 2012
    Assignee: JTEKT Corporation
    Inventor: Katsunori Otsuka
  • Patent number: 8104965
    Abstract: An axle stub bearing unit for a bearing point of an axle stub of a steerable axle of a vehicle is provided, with a radial bearing that is constructed as a needle bearing, and a separate axial bearing that is constructed as a sliding bearing, which are accommodated in a cup-shaped bush (2, 12, 21, 25). The bush is a component which is formed in one piece and is provided with a sleeve (7, 14, 19, 26) in a region of the axial bearing.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: January 31, 2012
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Johannes Lang, Michael Ruprich, Thomas Schilling
  • Patent number: 8100587
    Abstract: An outer ring for a rolling element bearing has three mounting pads on its outer surface. The inner surface of the ring is arranged to be non-circular, with its effective radius being at a minimum at the three points midway between adjacent pairs of mounting pads. This provides a preload on the rolling elements of the bearing in use, preventing skidding, but because the ring is not supported between the pads it can still flex under loads. The ring may be oriented in use so that transient loads are directed through one of the mounting pads.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: January 24, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Graham P. Morton, Stephen T. McDonagh
  • Publication number: 20120011953
    Abstract: A ram air turbine gearbox includes a pinion shaft arranged in a housing and operatively supports a pinion gear. An input shaft is arranged in the housing and operatively supports a ring gear coupled to the pinion gear. The input and output shafts are oriented at an angle. A rolling element bearing supports the pinion shaft in the housing and includes inner and outer races between which a multiple ball bearings are arranged. Each ball includes a ball diameter. The inner and outer races respectively include inner and outer raceway radii and inner and outer raceway depths. The inner and outer raceway radii each are approximately 52% of the ball diameter. The inner raceway depth is at a minimum 25% of the ball diameter, and the outer raceway depth is at a minimum 20% of the ball diameter.
    Type: Application
    Filed: July 16, 2010
    Publication date: January 19, 2012
    Inventor: Stephen Michael Bortoli
  • Publication number: 20120008892
    Abstract: An antifriction bearing for mounting a rotor of a wind power plant, which is easy to mount and has satisfactory functional properties. The antifriction bearing has an outer ring, an inner ring and having a plurality of rolling bodies which are arranged between the inner ring and the outer ring. The outer ring has at least two segments in a circulation direction. One of the segments is a high load segment that extends over a region in the circulation direction greater than 180°, preferably greater than 200° and, in particular, greater than 250°, and/or the separating gaps between the segments are arranged in a region in the circulation direction of less than 180°, preferably less than 160° and, in particular, less than 110°.
    Type: Application
    Filed: July 8, 2011
    Publication date: January 12, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventor: Martin GREHN
  • Publication number: 20110311362
    Abstract: A bearing comprising a high tensile steel layer and a mild steel base layer with said layers being fused together across a fusion zone, a raceway machined across the bearing, with said raceway having a bearing support depth which is substantially greater than a bearing support depth obtainable using traditional steel hardening processes, and a retention structure machined into at least the mild steel base layer and utilized to retain the bearing to an underlying bearing support.
    Type: Application
    Filed: December 4, 2009
    Publication date: December 22, 2011
    Inventor: Jochen Corts
  • Publication number: 20110296936
    Abstract: The invention relates to a machine part comprising a first physical component, wherein: the first physical component is configured for moving relative to a second physical component; the first physical component has a first surface with a contact area for physical contact with the second physical component; the first physical component is shaped spatially complementarity to the second physical component at the contact area, and a polyelectrolyte layer is present on the first surface at a location of the contact area. The invention further relates to a machine comprising the present machine part and the second physical component. In addition, the invention relates to the use of a polyelectrolyte layer to reduce the friction between the first physical component and the second physical component, and a rolling-elements bearing.
    Type: Application
    Filed: December 18, 2009
    Publication date: December 8, 2011
    Inventor: Jeroen Henricus Hubertus Bongaerts
  • Publication number: 20110293212
    Abstract: Each separator is arranged between an outer peripheral cylindrical raceway surface of an inner ring and an inner peripheral cylindrical raceway surface of an outer ring, and interposed between two cylindrical rollers positioned next to each other in the circumferential direction of a cylindrical roller bearing. The separator has: a first concave surface which is one end surface of the separator in the circumferential direction and on which the cylindrical roller slides; one end surface in a radial direction of the inner ring; a lubricant storing chamber that opens at the one end surface in the radial direction; and at least one slit that opens at the concave surface and that is communicated with the lubricant storing chamber.
    Type: Application
    Filed: May 20, 2011
    Publication date: December 1, 2011
    Applicant: JTEKT CORPORATION
    Inventor: Yasuhiro KOBAYASHI
  • Publication number: 20110293213
    Abstract: An angular ball bearing, in particular wheel bearing, with at least two rows of load-bearing rolling bodies and a hollow-cylindrical section arranged between two rolling body inner raceways. Inner rims are arranged at transitions from the hollow-cylindrical section to the rolling body inner raceways. The ball bearing is impactproof. This is achieved in that an annular element is arranged in, for example pressed into, the hollow-cylindrical section, axial force is transmitted between the rolling bodies of adjacent rows of rolling bodies, and a Brinelling of the raceway outlets and of the raceways is reduced or even prevented. The annular element may be an independent component or an annular element which is integrated in the outer ring, for which instructions regarding the required conditions are provided.
    Type: Application
    Filed: May 27, 2011
    Publication date: December 1, 2011
    Inventors: Frank EICHELMANN, Ralf HEISS, Arno WEHR-ALBERT
  • Publication number: 20110285229
    Abstract: A bearing is positioned relative to a rotatable shaft by inserting the bearing over the rotatable shaft until the bearing contacts a flange of the rotatable shaft, which is cold-forged on the rotatable shaft. The bearing is fixed to the rotatable shaft such that a swaged portion is formed in an outer peripheral portion of the rotatable shaft on an opposite axial side of the bearing, which is axially opposite from the flange, by swaging a corresponding part of the outer peripheral portion of the rotatable shaft such that the corresponding part of the outer peripheral portion of the rotatable shaft is radially outwardly bulged to form the swaged portion, and the swaged portion is axially pressed against the bearing to axially securely clamp the bearing between the swaged portion and the flange.
    Type: Application
    Filed: April 5, 2011
    Publication date: November 24, 2011
    Applicant: ASMO CO., LTD.
    Inventors: Takao Yamaki, Seiichi Murakami, Masumi Tsuchida
  • Publication number: 20110268381
    Abstract: A rolling bearing 10 includes an outer ring fixed to a housing, an inner ring that is arranged so as to face the outer ring in the radial direction of the rolling bearing and that is fixed to a rotating shaft, balls that are rollably arranged at positions between the outer ring and the inner ring in the radial direction, and seal members that seal up an annular space between the outer ring and the inner ring. Escape passages through which fluid is circulated in the axial direction of the rolling bearing so as to be allowed to escape are formed in a contact portion of the outer ring, which contacts the housing.
    Type: Application
    Filed: April 22, 2011
    Publication date: November 3, 2011
    Applicant: JTEKT CORPORATION
    Inventors: Kazuki HAMADA, Hiroshi UENO, Isao USUKI
  • Patent number: 8043006
    Abstract: An axial piston machine of swashplate construction is provided. The axial piston machine has two pivot bearing parts. In order to improve the guiding of a cage segment mounted within a gap between the two pivot bearing parts, a guide element, in the region of its rotary bearing connected to the cage segment is displaceably connected to the cage segment by an elongated guide in a longitudinal direction. The guide member, in the region of its end region connected to the other pivot bearing part, is rotatable by an associated rotary bearing and rigidly connected in the longitudinal direction to one of the two pivot bearing parts.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: October 25, 2011
    Assignee: Brueninghaus Hydromatik GmbH
    Inventors: Reinhold Schniederjan, Jerzy Kreja
  • Publication number: 20110250998
    Abstract: A pulley support structure for a belt-drive continuously variable transmission and a belt-drive continuously variable transmission are provided that are able to control the occurrence of Mindlin slip itself, and in cases where Mindlin slip has occurred, are able to effectively reduce the effects thereof. In this pulley support structure for a belt-drive continuously variable transmission, 2500 MPs or less is the maximum contact pressure during use between the raceway surfaces of the inner wheel and outer wheel and the rolling elements in the various roller bearings for rotatably supporting the pulleys for the continuously variable transmission. The rolling element surface hardness is HRc 60 or greater, and is at least 1 HRc harder than that of the raceway surfaces. The surface of the rolling element is nitrided or carbonitrided, and the nitrogen concentration in the surface is 0.2% by mass or greater and 2.0% by mass or less.
    Type: Application
    Filed: December 28, 2009
    Publication date: October 13, 2011
    Applicant: NSK Ltd.
    Inventors: Shigeki Hizuka, Kouji Ueda, Susumu Tanaka, Nobuaki Mitamura
  • Publication number: 20110249928
    Abstract: The present invention provides a needle bearing including a cage that is shrinkable or extensible in a circumferential direction, which can prevent plastic deformation and ensure both of a sufficient strength for axial torsion and a sufficient deformation amount. In a drawn cup needle bearing 10, a cage 13 includes a plurality of elastic deformation portions 17 along a circumferential direction thereof, which are shrunk in the circumferential direction. The elastic deformation portions 17 are formed symmetrically with respect to an intermediate portion C in an axial direction of the cage.
    Type: Application
    Filed: December 24, 2010
    Publication date: October 13, 2011
    Applicant: NSK LTD.
    Inventor: Yutaka Kondou
  • Publication number: 20110243488
    Abstract: There is provided a bearing constituent member capable of achieving a long life of a rolling bearing and securing sufficient static loading capacity and dimensional stability and a production process thereof as well as a rolling bearing having a long life and exhibiting sufficient static loading capacity and dimensional stability. A workpiece obtained from a steel containing 3.2 to 5.0% by mass of Cr and 0.05% by mass or more to less than 0.5% by mass of V is subjected to a heat treatment such as a carbonitriding treatment. Thereby, the following are achieved: the content of C in the surface layer ranging from the surface of the bearing constituent member of the rolling bearing to 10 ?m is 1.1 to 1.6% by mass, Vickers hardness at the position of a depth of 50 ?m from the surface is 740 to 900 (Rockwell C hardness is 62 to 67), the ? amount at the position of a depth of 10 ?m from the surface is 20 to 55% by volume, particles composed of vanadium nitride having a particle diameter of 0.
    Type: Application
    Filed: December 11, 2009
    Publication date: October 6, 2011
    Applicants: Optoelectronics Co., Ltd., Opticon, Inc
    Inventors: Katsuhiko Kizawa, Tsuyoshi Mikami, Kentarou Ono, Chikara Nakajima
  • Publication number: 20110194797
    Abstract: A vehicle wheel bearing apparatus has an outer member, an inner member and double row rolling elements. A wheel mounting flange is integrally formed on a driving side of the inner member for mounting a wheel via a brake rotor. Through apertures are formed on the wheel mounting flange. Hollow pins, having a chamfered portion, are press-fit into the through apertures. The brake rotor is formed with insert apertures to receive the pins, at positions respectively corresponding to the hub bolts and pins. The brake rotor can be temporarily mounted on the wheel mounting flange by inserting or press-fitting the chamfered end sides of the pins into the insert apertures.
    Type: Application
    Filed: April 21, 2011
    Publication date: August 11, 2011
    Applicant: NTN Corporation
    Inventors: Kazunari Yamamoto, Nobukatsu Uchiyama
  • Patent number: 7976223
    Abstract: A bearing unit comprises a rolling element bearing with at least two rings which are each provided with at least one raceway and at least one set of rolling elements which are in contact with the raceways as well as at least one tubular sheet metal element connected to one of the rings. The sheet metal element at least partly has a mounting part with non-circular cross section, and the mounting part being mounted to a counter-part with a correspondingly non-circular cross-section of the ring or connected to the ring.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: July 12, 2011
    Assignee: AB SKF
    Inventor: Hendrikus Kapaan
  • Publication number: 20110135233
    Abstract: An apparatus is provided for a vehicle having a wheel and a wheel bearing assembly with bearing races supporting the wheel. The apparatus includes a first component mounted for rotation with the wheel and a second component spaced from the first component by a predetermined gap and not connected for rotation with the wheel. One of the first and the second components is displaced relative to the other upon a force to close the gap and contact the other of the first and second components to at least partially form a load path for the force that bypasses the bearing races.
    Type: Application
    Filed: August 31, 2010
    Publication date: June 9, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Robert G. Sutherlin, Douglas N. Reed
  • Publication number: 20110110617
    Abstract: At least one of an outer ring, an inner ring and balls can be formed of ceramics capable of suppressing impact on another bearing component more than silicon nitride to provide a bearing component usable in an application where an abruptly varying load is imposed thereon.
    Type: Application
    Filed: June 17, 2009
    Publication date: May 12, 2011
    Inventor: Katsutoshi Muramatsu
  • Patent number: 7934872
    Abstract: A drawn cup roller bearing includes: a drawn cup outer ring that includes a cylindrical portion serving as an outer raceway surface, a first rib which is formed at one axial end portion of the cylindrical portion and is bent radially inwardly such that a step portion is formed at an intermediate portion of the first rib, and a second rib which is formed at the other axial end portion of the cylindrical portion and is radially inwardly folded back; an annular seal which is press-fitted in the step portion; and a cage which holds a plurality of rollers and is inserted into the drawn cup outer ring from the second rib to be mounted in the drawn cup outer ring in such a manner that the cage is retained against withdrawal by the step portion and the plurality of rollers is retained against withdrawal by the second rib.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: May 3, 2011
    Assignee: JTEKT Corporation
    Inventor: Kenichi Hashimoto
  • Publication number: 20110088952
    Abstract: Enhancements to a drill motor include a bearing pack assembly, a balancing piston, a recording transducer package (RTP), and a latch rod assembly for a drill motor to improve performance and reliability of a drill motor. The bearing pack assembly includes a bearing housing coupled to an end cap and a drive shaft extending into the end cap and the bearing housing. The bearing pack assembly also includes a thrust bearing disposed within the bearing housing, wherein the thrust bearing separates the drive shaft and the bearing housing, and a bearing sleeve disposed within the bearing housing, wherein a radial bearing is placed between the bearing sleeve and the drive shaft. The balancing piston includes a first and second hydrodynamic seal. The recording transducer package is self powered and gathers data from a plurality of sensors in the downhole tool.
    Type: Application
    Filed: April 9, 2010
    Publication date: April 21, 2011
    Applicant: Multi-Shot LLC
    Inventors: Allen Richard Young, Gilbert Villarreal
  • Patent number: 7918649
    Abstract: A double-row self-aligning roller bearing includes left and right rows of rollers, arranged between an inner race and an outer race. A raceway surface of the outer race represents a spherical shape and the rollers have an outer peripheral surface following the shape of the raceway surface of the outer race. The rollers of the left and right roller rows have respective lengths different from each other. Also, the left and right roller rows have respective contact angles different from each other.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: April 5, 2011
    Assignee: NTN Corporation
    Inventors: Naoki Nakagawa, Masaharu Hori, Takeshi Maeda, Souichi Yagi, Mitsuo Sasabe, Nobuyuki Mori
  • Publication number: 20110002571
    Abstract: A process for producing a bearing assembly includes positioning a first sleeve element in an injection mould, the injection mould having a cylindrical recess with a diameter for receiving the first sleeve element and the outside diameter of the first sleeve element being lesser than the diameter of the recess. A second sleeve element is positioned concentrically within the first sleeve element in the injection mould to define an annular chamber and elastomeric material in a molten state is injected under pressure into the annular chamber between the sleeve elements such that the outside diameter of the first sleeve element is expanded. The elastomeric material is allowed to solidify in the annular chamber between the two sleeve elements and the assembly of sleeves and elastomeric material are removed as a unit from the injection mould.
    Type: Application
    Filed: May 28, 2010
    Publication date: January 6, 2011
    Applicant: AB SKF
    Inventors: Peter Horling, Edgar Pickel
  • Patent number: 7857518
    Abstract: An antifriction hearing race, particularly for highly stressed antifriction bearings in aircraft power units, which have a fixed joining of two layers made of different metallic materials, with an area of the raceways for the roller bodies being made of a steel with a very high degree of hardness and resistance to wear, and the core area of the antifriction bearing race being made of a high-strength steel. A powder-metallurgical high-speed steel has a high content of carbide-forming alloying elements and a high carbon content is provided as the material for the raceway of the roller bodies, whereas the material for the core area of the antifriction bearing race is made of a hot-work steel with, in comparison to the raceway material, a lower content of carbide-forming alloying elements and with a low carbon content, both materials being joined to one another with material fit by diffusion welding.
    Type: Grant
    Filed: May 6, 2006
    Date of Patent: December 28, 2010
    Assignee: Schaeffler KG
    Inventors: Oskar Beer, Edgar Streit
  • Publication number: 20100316323
    Abstract: Provided are a method of manufacturing an outer race which contributes to extension of a bearing life and allows rolling elements to stably roll, an outer race for a double-row angular bearing, and a wheel bearing device. Further, provided is a double-row angular bearing which is excellent in both strength and rigidity and which can be endowed with a longer life and higher quality. At least one of an inner race and the outer race is formed by a cold rolling process. Hardness prior to the cold rolling process of a blank is set to Rockwell Hardness 30 HRC or less. The outer race is formed by performing the cold rolling process on the blank including a circumferentially protruding portion which is provided on a radially inner surface of the blank and protrudes to a radially inner side of the blank.
    Type: Application
    Filed: March 9, 2009
    Publication date: December 16, 2010
    Inventors: Kiyotake Shibata, Isao Hirai, Keizo Kobayashi, Eiji Hora
  • Publication number: 20100316319
    Abstract: A wheel support bearing assembly includes an outer member (1), which serves as a stationary member and has an inner periphery formed with a plurality of rows of raceway surfaces (3), an inner member (2), which serves as a rotatable member and has an outer periphery formed with respective raceway surfaces (4) opposed to the previously described raceway surfaces (3), and a plurality of rows of rolling elements (5) interposed between the respective opposed raceway surfaces (3, 4). The outer member (1) is thermally refined by means of a quenching and a high temperature tempering process so that a layer of at least 2 mm in depth from a surface of the outer member is rendered to have a micro-pearlite structure.
    Type: Application
    Filed: February 6, 2009
    Publication date: December 16, 2010
    Inventor: Isao Hirai
  • Publication number: 20100296199
    Abstract: A low hysteresis pivot bearing suitable for a variety of applications. The relationship between torque and angular displacement is substantially linear, with negligible residual hysteresis. The pivot bearing includes a pivot shaft and an inner sleeve pivotally attached to the pivot shaft by an inner bearing. An outer sleeve is pivotally attached to the inner sleeve by an outer bearing. An inner sleeve actuator continuously rotates the inner sleeve relative to the stationary shaft.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 25, 2010
    Inventor: Zine-Eddine Boutaghou
  • Patent number: 7837393
    Abstract: A self-aligning roller bearing is provided which includes an inner ring having a double-row raceway, an outer ring having a double-row integral and spherical raceway, a plurality of rollers incorporated between the inner ring raceway and the outer ring raceway on a double-row basis, and a retainer for rotatably retaining the rollers. Processing marks crossing each other are formed on a raceway surface of the spherical raceway of the outer ring. The processing marks are cut substantially straightly at a predetermined crossing angle to the circumferential direction of the raceway surface. The surface roughness of the raceway surface is substantially constant in the axial direction and the circumferential direction thereof at least in a part in contact with the roller.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: November 23, 2010
    Assignee: NSK Ltd.
    Inventors: Kazumi Matsuzaki, Toshio Ueda, Koichi Nagano, Atsushi Yamanoue
  • Patent number: 7832943
    Abstract: A roller bearing cage includes annular portions provided respectively at opposite ends thereof, a plurality of pillar portions interconnecting the annular portions, a plurality of pockets for respectively holding needle rollers, and roller retaining portions formed respectively on circumferentially-opposed wall surfaces and of each pocket portion. A concave groove smaller in width than the pillar portion is formed axially in a back surface of each pillar portion and those portion of back surfaces of the annular portions disposed respectively at opposite ends of each pillar portion. Separation groove portions are formed respectively at opposite sides of those portions of the concave groove disposed respectively at the opposite ends of the pillar portion, and extend respectively to corresponding circumferentially-opposite side surfaces of the pillar portion, and each separation groove portion separates the corresponding roller retaining portion and annular portion from each other.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: November 16, 2010
    Assignee: JTEKT Corporation
    Inventor: Kenichi Hashimoto
  • Publication number: 20100284642
    Abstract: The object is to improve heat dissipation ability of a rolling bearing while preventing creeping of a resin pulley. With two axially spaced apart circumferential grooves 13 formed in the radially outer surface of the outer race 12, the resin pulley 14 is integrally fixed to the outer race 12 by injection molding such that the end surfaces of the outer race 12 and both end portions of the radially outer surface of the outer race 12 are exposed. Since resin forming a boss portion 15 of the resin pulley 14 is engaged in the circumferential grooves 13, radially extending side walls of the circumferential grooves 13 contact radial surfaces of the resin pulley 14. This prevents creeping of the resin pulley 14. Since the exposed end surfaces and radially outer surface of the outer race 12 act as heat dissipation surfaces, it is possible to improve the ability to dissipate heat from the bearing.
    Type: Application
    Filed: January 19, 2009
    Publication date: November 11, 2010
    Inventors: Katsunori Mineno, Goro Nakao
  • Patent number: 7828484
    Abstract: The radial antifriction bearing has an outer bearing ring, an inner bearing ring and roller bodies, which are arranged between the bearing rings, are held at uniform distances from one another in the peripheral direction by a bearing cage. The roller bodies are discs that each have two parallelly arranged lateral surfaces which are symmetrically flattened from a spherical basic shape. In order to prevent edge stresses between the discs and the raceways, at least the raceway in the inner bearing ring, on its outer edge areas, transition into a logarithmically decreasing profile.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: November 9, 2010
    Assignee: Schaeffler KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Robert Plank, Arbogast Grunau
  • Publication number: 20100254645
    Abstract: In a rolling bearing cage, adjacent cage bar portions on both sides of each pocket have protrusions protruding toward the pocket and a radially outer side and retaining a rolling element, accommodated in the pocket, from the radially outer side, a side surface of each cage bar portion and the corresponding protrusion, facing the pocket, has a guide surface slidably guiding the rolling element, the guide surface includes a first circular arc surface having a concave shape corresponding to an outer peripheral surface of each rolling element, and a side surface of each protrusion, facing the pocket, has a second circular arc surface having a convex shape smoothly continuous with a radially outer side of the first circular arc surface and an introducing surface smoothly continuous with a radially outer side of the second circular arc surface and inclined to a side opposite to the pocket toward a distal end of the protrusion.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 7, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Kazuya Suzuki, Yuichiro Hayashi
  • Patent number: 7806598
    Abstract: A method of enhancing the operating life of roller bearings assemblies (B) subject to oil-out conditions is disclosed. The method comprises applying a tribological metal carbide reinforced amorphous hydrocarbon coating layer (16) over either the sliding surfaces (SS) or the rolling surfaces (RS) of the bearing assembly rolling elements (RE), but is preferably applied at least to the sliding surfaces of the rolling element. The coating has a thickness determined according to the equation: Formula (I), where d=coating thickness P=is the ratio of force applied to the rollers/contact area; n=the number of rollers; (t?t0)=the desired operating time after oil-out condition starts; and K? is the Archard constant.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: October 5, 2010
    Assignee: The Timken Company
    Inventors: Gary L. Doll, Ryan D. Evans, Stephen P. Johnson
  • Publication number: 20100247018
    Abstract: A roller bearing assembly includes an annular outer ring with first and second outer ring shoulders that define a first raceway in the outer ring. An annular inner ring may be disposed substantially concentrically within the outer ring, the inner ring including a base portion and first and second inner ring shoulders that extend from and are integral with the base portion to define a second raceway in the inner ring. A plurality of rolling elements may be arranged between the inner ring and outer ring and within the first and second raceways to rotatably couple the outer ring to the inner ring.
    Type: Application
    Filed: March 25, 2009
    Publication date: September 30, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Brent Bristol, Dori Marshall, Craig M. Goodman, Louie Timothy Gaines
  • Publication number: 20100215296
    Abstract: The invention concerns a bearing component (Ia, Ib, 1, 7, 9) for a rolling (13, 14, 16) or sliding bearing (19), wherein the bearing component (Ia, Ib, 1, 7, 9) is one of an inner ring (Ia, 1), an outer ring (Ib, 7), a rolling element (9), a cage, or a guide ring. The bearing component (Ia, Ib, 1, 7, 9) comprises a first material (2), and a second material (3) joined to the first material (2), wherein the second material (3) and the first material (2) having been joined by a semi-solid metal process.
    Type: Application
    Filed: May 26, 2008
    Publication date: August 26, 2010
    Inventor: Patrick Dahlman
  • Publication number: 20100187367
    Abstract: A roller assembly comprises a first race and a second race. The second race is coaxial with the first race and is axially movable relative to the first race. The first and second races are movable between a static axial position and a dynamic axial position relative to one another. The roller assembly includes at least one biasing member that is operative to bias the first and second races from the dynamic axial position toward the static axial position.
    Type: Application
    Filed: January 28, 2009
    Publication date: July 29, 2010
    Applicant: The Boeing Company
    Inventor: Bruce A. Dahl
  • Publication number: 20100187051
    Abstract: A rocking bearing outer ring (12) includes an arcuate track member (13) having a track surface on its inner diameter surface, and a flange portion (14) projecting radially inward from each widthwise end portion of the track member (13). In addition, when it is assumed that L1 represents a circumferential length of the track member (13) and L2 represents a circumferential length of the flange portion (14), 0.2?L2/L1?8 is satisfied.
    Type: Application
    Filed: May 21, 2008
    Publication date: July 29, 2010
    Inventors: Akihiko Katayama, Masaru Kuroda, Haniki Yamada
  • Publication number: 20100172607
    Abstract: To provide a bearing structure in which the processing is easy, and the manufacturing cost can be reduced.
    Type: Application
    Filed: August 29, 2008
    Publication date: July 8, 2010
    Applicant: JTEKT CORPORATION
    Inventors: Kazuyoshi Yamakawa, Masahiro Suzuki, Takashi Sada, Kazuya Suzuki, Naoki Tani
  • Publication number: 20100158425
    Abstract: Both an end surface of a first rib, over which a first cylindrical rollers slide, and an end surface of a second rib, over which the first cylindrical rollers slide, slope to approach the perpendicular bisector plane of a first cylindrical raceway surface of an outer ring or slope to be spaced away from the perpendicular bisector plane as it goes outward in a radial direction in a cross section of the outer ring taken in an axial direction. A first sliding contact portion of each first cylindrical roller, which is in sliding contact with the end surface of the first rib, and a second sliding contact portion of each first cylindrical roller, which is in sliding contact with the end surface of the second rib, both are located inward in the radial direction with respect to an orbital cylindrical plane of the first cylindrical rollers.
    Type: Application
    Filed: November 27, 2009
    Publication date: June 24, 2010
    Applicant: JTEKT CORPORATION
    Inventor: Takeharu Uranishi
  • Publication number: 20100150491
    Abstract: A bearing includes a first inner race half and a second inner race half, and a first outer race half and a second outer race half. A cage defining a plurality of openings supports a plurality of rollers. The bearing is assembled by positioning the first inner race half on a mandrel and the first outer race half on a work support, positioning the cage with the rollers supported in the openings adjacent to and concentric with the first inner race half and the first outer race half. The second inner race half and the second outer race half are positioned adjacent the first inner race half and the first outer race half respectively. The first inner race half and the second inner race half, and the first outer race half and the second outer race half are then bonded together to form the bearing assembly.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: William D. Cymbal, Douglas P. Wendling
  • Publication number: 20100150492
    Abstract: The invention relates to an anti-friction bearing (1) having a brake device, in particular a revolving joint, consisting of a bearing outer ring (2) and a bearing inner ring (3) between which anti-friction elements roll on associated raceways, wherein a braking effect by means of frictional engagement is achieved by pressing a displaceable brake element, which is connected to one of the bearing rings (3, 2) and has a brake lining (15), against a opposing surface (23), which is connected to the other bearing ring (2, 3). According to the invention, the opposing surface (23) is provided with a friction-increasing coating (24) which consists of a base material (25) and at least one incorporated additional material (26).
    Type: Application
    Filed: May 28, 2008
    Publication date: June 17, 2010
    Applicant: SCHAEFFLER KG
    Inventors: Christian Nuissl, Juergen Stoelzle
  • Publication number: 20100150490
    Abstract: A bearing assembly includes an inner race having a first inner race half and a second inner race half, and an outer race having a first outer race half and a second outer race. The first inner race half and the second inner race half cooperate to define an inner annular groove, and the first outer race half and the second outer race half cooperate to define an outer annular groove. A plurality of rollers is disposed within the inner annular groove and the outer annular groove in rolling engagement with the inner race and the outer race. An inner coupling mechanism couples the first inner race and the second inner race together, and an outer coupling mechanism couples the first outer race and the second outer race together.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 17, 2010
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: William D. Cymbal, Arthur W. Nellett