Race End Structure Patents (Class 384/564)
  • Patent number: 11965552
    Abstract: A bearing assembly is disclosed herein that is configured for use in a rubber boot arrangement. The bearing assembly includes an outer ring, an inner ring, a plurality of rolling elements supported between the outer ring and the inner ring, and a cage configured to retain the plurality of rolling elements. A seal assembly is provided that includes at least one sealing element and a seal insert that is configured to define a first axial stop face for the cage.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: April 23, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Kleberson Sierra, Elias Ferreira Machado
  • Patent number: 11624402
    Abstract: A roller bearing includes an inner race ring, an outer race ring, and a roller arranged between and in contact with the inner and outer rings. The bearing has a flange on the inner race ring at one axial end, and a flange on the outer race ring at an opposite axial end. At least one of the flanges, or an end of the roller, has a profile including a principal segment with a reference point C defining a contact location between the roller and the flange, the principal segment having a continuously changing radius of curvature, on both sides of reference point C, that decreases as a distance from the reference point C increases.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: April 11, 2023
    Assignee: The Timken Company
    Inventors: Xiaolan Ai, Jerry P. Rhodes
  • Patent number: 11572944
    Abstract: A floating spacer assembly for a gear mounted on a shaft, such as a planet gear mounted to a planet carrier, is disclosed. The gear may be mounted on the shaft with a pair of roller bearings with inner races and bearing rollers, and a gear bore having a gear groove defined therein functioning as the outer races of the roller bearings. The floating spacer assembly may include an annular spacer ring having one or more sector slots circumferentially spaced around the spacer ring, and a spacer sector disposed within each of the sector slots and extending radially outward from the spacer ring and into the gear groove when the floating spacer assembly is installed between the roller bearings. The spacer sectors may engage surfaces of the gear groove and the spacer ring may engage the bearing rollers to limit axial movement of the gear relative to the shaft.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: February 7, 2023
    Assignee: Caterpillar Inc.
    Inventors: Vanyo N. Kirov, Bryan Dale Van Dyke, Keith A. Kabrick, Cody Lofgren, Thomas Werstler
  • Patent number: 11420467
    Abstract: A sealing device for wheel hubs connected to constant-velocity joints including a first sealing assembly arranged between inner and outer rings of the wheel hub, and a second sealing assembly mounted on the inner ring and straddling the wheel hub and an outer ring of the constant-velocity joint. The first sealing assembly has a signal generating element having an annular insert mounted externally on a shield facing the constant-velocity joint and extending axially projecting above part of an annular step formed, on the same side as the constant-velocity joint, on a radially outer side surface of the inner ring, in a position immediately adjacent to the sleeve portion of the first shield. The second sealing assembly includes a tubular support keyed onto the inner ring by its first end on the outside edge folded in the manner of an L and shaped to engage inside the annular insert.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: August 23, 2022
    Assignee: AKTIEBOLAGET SKF
    Inventors: Giorgio Barberis, Fabio Nosenzo
  • Patent number: 11286978
    Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage having a plurality of cage pockets. Each of the cage pockets has a retainer configured to permit displacement of the tapered roller in a direction with a component in a radial direction, and restrict detachment of the tapered roller to an outer side in the radial direction by bringing the retainer into contact with a part of an outer peripheral surface of the tapered roller. The cage pockets include a first cage pocket having a first retainer with which a permissible amount of the displacement is a first displacement amount, and a second cage pocket having a second retainer with which the permissible amount of the displacement is a second displacement amount smaller than the first displacement amount.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: March 29, 2022
    Assignee: JTEKT CORPORATION
    Inventors: Yuka Sato, Ichiro Kojima, Tomoyuki Aida, Atsushi Naitou, Kanichi Koda
  • Patent number: 11256202
    Abstract: A snap ring is set to a set portion of a shaft of a rotator from a direction orthogonal to an axial direction of the shaft. The snap ring includes a first arcuate portion and a second arcuate portion facing each other, being elastically deformable in directions away from each other, holding the set portion by elastic deformation restoring force. One ends of the first and second arcuate portions are away from each other to form an insertion portion to insert the set portion. When the snap ring is not used, the first arcuate portion has a same radius of curvature as the second arcuate portion and the set portion, and a center of curvature closer to the second arcuate portion than the first arcuate portion, and the second arcuate portion has a center of curvature closer to the first arcuate portion than the second arcuate portion.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: February 22, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yohhei Watanabe, Naoto Suzuki, Yuta Azeyanagi, Nobuo Kuwabara, Kenji Honjoh, Teppei Kawata, Haruki Nagata, Michiharu Suzuki
  • Patent number: 11035457
    Abstract: The present invention relates to a bearing arrangement (104) connectable to a shaft (102), the bearing arrangement comprising a bearing (105, 105?) comprising a plurality of rolling elements (110) arranged to rotate relative to an inner raceway (302) for said bearing arrangement; and a ring shaped contact element (114, 114?) having an extension in an axial direction thereof, the ring shaped contact element further comprising a first contact surface (402) adapted to face the plurality of rolling elements, wherein an inner diameter of the ring shaped contact element at the axial position of the first contact surface has a larger diameter in comparison to a diameter (412) of the inner raceway, such that a continuous radial gap (414) is provided in the circumferential direction between the ring shaped contact element and the inner raceway when the bearing arrangement is connected to the shaft, wherein the radial gap (414) is arranged to be provided in fluid communication with a lubricating flow channel (306) of t
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: June 15, 2021
    Assignee: VOLVO TRUCK CORPORATION
    Inventor: Anders Hedman
  • Patent number: 11002315
    Abstract: A rolling bearing having an annular inner ring and an annular outer ring in relative rotation around a central axis and rolling elements housed between raceways provided in the two rings. At least one of the rings includes two concentric annular ring parts made of metallic material, and an annular layer made of electrically insulating material, the layer being accommodated between the two parts.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: May 11, 2021
    Assignee: Aktiebolaget SKF
    Inventor: Bernd Stephan
  • Patent number: 10718420
    Abstract: A strain wave gearing has a wave generator provided with a plug and a roller bearing. The roller bearing is provided with flange plates fixed to both sides of the plug, and outer circumferential edge portions of the flange plates protrude outwardly from a plug outer circumferential surface so as to locate on both sides, in an axial line direction, of the raceway of rollers. The movements of the rollers in the axial line direction are constrained by the outer circumferential edge portions. The movement of retainer in the axial line direction is constrained by engaging with the rollers. The movement of each component part of the roller bearing in the axial line direction can be constrained without using additional components.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: July 21, 2020
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventors: Masaru Kobayashi, Tatsuro Hoshina
  • Patent number: 10683896
    Abstract: A bearing cage includes a circumferential ring element and an axial bridge that meet in a connection region, and the connection region includes a recess formed such that a thickness of the ring element in the connection region is less than a thickness of the ring element outside the connection region and such that a thickness of the bridge in the connection region is not less than a thickness of the bridge outside the connection region.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: June 16, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventor: Roland Harich
  • Patent number: 10625757
    Abstract: A backing ring assembly for a railcar axle is provided. According to various aspects, the backing ring assembly may include a main body and a ring. The main body may include an inner surface configured to abut a fillet of a railcar axle and a receiving element on an inboard radial face of the main body. The ring may be engaged in the receiving element and may be configured to protrude over a cylindrical surface of a shoulder on the railcar axle. The ring may include an inner face having a recess and a generally flat outer face.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: April 21, 2020
    Assignee: Ranger Bearings LLC
    Inventor: Daniel T. Conway, Jr.
  • Patent number: 10138939
    Abstract: A taper roller bearing includes: an inner ring, an outer ring, a plurality of taper rollers, and an annular cage which holds the plurality of taper rollers at an interval in the circumferential direction. The cage includes a small-diameter annular portion on one axial side, a large-diameter annular portion on the other axial side, and a plurality of column portions. An inner circumferential surface of the small-diameter annular portion includes a first inner circumferential surface portion and a second inner circumferential surface portion having a small diameter. An outer circumferential surface of the small flange included in the inner ring includes a first outer circumferential surface portion which opposes the first inner circumferential surface portion having a fine clearance, and a second outer circumferential surface portion which has a small diameter and opposes the second inner circumferential surface portion having a fine clearance.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: November 27, 2018
    Assignee: JTEKT CORPORATION
    Inventors: Shigeo Kamamoto, Junji Murata, Yuki Shishihara
  • Patent number: 10030698
    Abstract: A bearing ring for a rolling-element bearing includes a rolling-element raceway that is axially delimited by a guide flange and a retaining flange. At least the retaining flange is configured as a separate element that is fixedly connectable to the bearing ring, and the bearing ring includes a substantially radially extending stop that is offset inward from an axial end of the bearing towards the raceway.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: July 24, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Philipp Bernreuther, Volker Dibal, Michael Reugels
  • Patent number: 9829040
    Abstract: A steering column bearing assembly is disposed between an upper column jacket and a steering control shaft, supporting the steering control shaft for rotation within the upper column jacket. The steering column bearing assembly comprises an inner race, an outer race, and a plurality of ball bearings disposed between the inner race and the outer race, each ball bearing having a ball bearing diameter. The inner race and the outer race define an annular cavity in which the plurality of ball bearings is disposed. The annular cavity has an interior column opening defined between an outer edge surface of the inner race and an inner edge surface of the outer race. The outer edge diameter is less than a sum of the inner edge diameter and the ball bearing diameter.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: November 28, 2017
    Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
    Inventors: Scott A. Stinebring, Michael W. Clark, Robert D. Maida
  • Patent number: 9683599
    Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers provided between the inner ring and the outer ring, and an annular cage. The cage has a small-diameter annular portion on a first side in an axial direction, a large-diameter annular portion on a second side in an axial direction, and a plurality of cage bar portions. The cage has pockets that are spaces each formed between the large-diameter annular portion and the small-diameter annular portion and between the adjacent cage bar portions in a circumferential direction and in which the tapered rollers are held. The cage further has a roller retaining portion that inhibits the tapered rollers housed in the pockets from falling outward in a radial direction. A recessed portion is formed in the small-diameter annular portion to reduce rigidity of the small-diameter annular portion.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: June 20, 2017
    Assignee: JTEKT CORPORATION
    Inventors: Atsushi Nagai, Kenichi Ono
  • Patent number: 9631671
    Abstract: A roller bearing assembly for a motor vehicle drive train is provided. The roller bearing assembly includes a bearing including an inner ring, an outer ring and roller elements rotatably supporting the inner ring with respect to the outer ring. The roller elements include a first roller element and a second roller element. The inner ring includes a first section for supporting the first roller element on the head of the pinion and a second section for supporting the second roller element on the tail of the pinion. The first section is thinner than the second section.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: April 25, 2017
    Assignee: Schaeffler Technologies AG & Co., KG
    Inventor: Rohan Dubey
  • Patent number: 9562563
    Abstract: A spherical roller bearing having an axially extending center axis, an outer ring, an inner ring concentric with the outer ring, a guide ring concentric with the inner and outer rings, the guide ring has two lateral surfaces, one set of cambered rollers on either side of the guide ring and a cage structure arranged to retain the two sets of cambered rollers. The guide ring includes two circumferential guide ring sections, an inner guide ring section proximal to the inner ring and an outer guide ring section distal to the inner ring. A portion of at least one of the two lateral surfaces corresponding to the inner guide ring section is provided with at least one of at least one depression and at least one protrusion. The cambered rollers of each set are distanced from the inner guide ring section and in contact with the outer guide ring section.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: February 7, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Marcus Loof
  • Patent number: 9540030
    Abstract: A steering column bearing assembly is disposed between an upper column jacket and a steering control shaft, supporting the steering control shaft for rotation within the upper column jacket. The steering column bearing assembly comprises an inner race, an outer race, and a plurality of ball bearings disposed between the inner race and the outer race, each ball bearing having a ball bearing diameter. The inner race and the outer race define an annular cavity in which the plurality of ball bearings is disposed. The annular cavity has an interior column opening defined between an outer edge surface of the inner race and an inner edge surface of the outer race. The outer edge diameter is less than a sum of the inner edge diameter and the ball bearing diameter.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 10, 2017
    Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
    Inventors: Scott A. Stinebring, Michael W. Clark, Robert D. Maida
  • Patent number: 9541127
    Abstract: A spherical roller bearing having an axially extending center axis with an outer ring, an inner ring arranged concentrically with the outer ring, a guide ring arranged concentrically with the inner ring and the outer ring, wherein the guide ring has a tapering radial cross-section, one set of cambered rollers on either side of the guide ring and a cage structure arranged to retain the two sets of cambered rollers. The guide ring having two circumferential guide ring sections, an inner guide ring section proximal to the inner ring and an outer guide ring section distal to the inner ring. At least one through-opening extends between two lateral surfaces of the guide ring. The at least one through-opening is arranged in the inner guide ring section and the cambered rollers of each set are distanced from the inner guide ring section and in contact with the outer guide ring section.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: January 10, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventor: Marcus Loof
  • Patent number: 9518605
    Abstract: A running ring (1) for a sleeve bearing, the running ring substantially including a cylindrical outer casing (3) or inner casing, the inner circumferential surface (5) or outer circumferential surface of which is formed as a raceway for bearing rollers, and two rims, which are formed on the axial end faces of the outer casing (3) or the inner casing and are oriented radially inward (7, 8) or outward, said rims being provided as an axial guide for the bearing rollers.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: December 13, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Ekrem Akyol, Heinz Schafers
  • Patent number: 9500229
    Abstract: A cage (1) for separating rollers in a toroidal roller bearing. The cage (1) comprises a first and second annular ring (2, 3), a plurality of elongated axial members (4) interposed between the first and second annular ring to thereby form a number of roller pockets (5). The cage further comprises a portion (6) extending radially inwardly on at least one of the first and second annular ring. The portion further extends in at least a part of the circumference of the at least one first and second annular ring. The radially outer peripheral surface of the annular ring comprising the portion further comprises axial grooves (7) at least at the circumference having the portion, wherein each axial groove is located at the axial end face of each roller pocket in such a way that a roller can be inserted and pulled out via the axial groove into and out of each roller pocket.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: November 22, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventor: Arne Lars Jonas Kullin
  • Patent number: 9500537
    Abstract: A temperature measurement apparatus includes a light source; a first splitter that splits a light beam into a measurement beam and a reference beam; a reference beam reflector that reflects the reference beam; an optical path length adjustor; a second splitter that splits the reflected reference beam into a first reflected reference beam and a second reflected reference beam; a first photodetector that measures an interference between the first reflected reference beam and a reflected measurement beam obtained by the measurement beam reflected from a target object; a second photodetector that measures an intensity of the second reflected reference beam; and a temperature calculation unit. The temperature calculation unit calculates a location of the interference by subtracting an output signal of the second photodetector from an output signal of the first photodetector, and calculates a temperature of the target object from the calculated location of the interference.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: November 22, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Abe, Tatsuo Matsudo, Chishio Koshimizu
  • Patent number: 9422982
    Abstract: A radial rolling element bearing (1) formed of a cylindrical outer ring (3) that is inserted into a housing (2), and a rolling element cage (4) arranged in said outer ring and formed by a plurality of roller-shaped rolling bodies (6) which are inserted into a bearing cage (5) and held thereby, equidistantly, in a circumferential direction, and roll on an outer raceway (8) formed by the inner lateral surface (7) of the outer ring, and on an inner raceway (11) formed by the outer lateral surface (9) of a shaft (10) to be mounted or a smooth cylindrical inner ring pushed onto said shaft. The roller race is axially guided by two separate flanged disks (14, 15) which lie against the axial sides (12, 13) of the outer ring and are axially secured, together with the outer ring, by securing elements which engage in recesses (16, 17) in the housing.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: August 23, 2016
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jan-Rene Aust, Ekrem Akyol, Edgar Schedl
  • Patent number: 9353795
    Abstract: A rolling bearing includes inner and outer races rotatable relative to each other, a plurality of rolling elements interposed between the inner and outer races, and a retainer arranged between the inner and outer races for retaining the plurality of rolling elements equiangularly. Flange portions are formed on a radially inner side and a radially outer side of an axial end portion of the retainer so as to extend radially. Recessed grooves are formed in a region of the inner race and a region of the outer race corresponding to the respective flange portions so as to form labyrinths together with the flange portions. Inner side surfaces of the flange portions and axial end surfaces of the recessed grooves, which are opposed to the inner side surfaces of the flange portions, are inclined radially so as to generate a flow of lubricant.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: May 31, 2016
    Assignee: NTN CORPORATION
    Inventors: Tomohisa Uozumi, Tomoyoshi Izutsu
  • Patent number: 9249833
    Abstract: In a tapered roller bearing, each of tapered rollers has a roller large end face, and a large rib end face of an inner ring. The large rib end face is formed at such a position that the large rib end face passes through the reference point, and a curvature radius of the large rib end face is set to a value within a range from 100% to 120% of a distance from a cone center of each of the tapered rollers to a prescribed reference point that is apart from the cone center along an inner ring raceway surface. The roller large end face is formed at such a position that the roller large end face passes through the reference point, and a curvature radius of the roller large end face is set to a value within a range from 80% to 100% of the distance.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: February 2, 2016
    Assignee: JTEKT CORPORATION
    Inventors: Junji Murata, Shigeo Kamamoto
  • Patent number: 9127676
    Abstract: A method for the axial positioning of bearings on a shaft journal of a rotor whereby the axial play of the rotor in its housing is adjusted by affixing a spacer ring and two bearings with an interference fit such that the outer race is moved axially with respect to the inner race of the same bearing over a distance that is a function of the desired axial play.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: September 8, 2015
    Assignee: ATLAS COPCO AIRPOWER N.V.
    Inventors: Sofie Kris Vanneste, Bart Bernaerts
  • Patent number: 9115760
    Abstract: A front bearing (tapered roller bearing) includes an inner ring, an outer ring, a plurality of tapered rollers, and a cage. The cage includes nail portions each extending from a first annular section facing a roller small end face, which is a small diameter side end face of the tapered roller, to an axially inward small rib end face of a small rib portion. The nail portions each support the tapered roller so as to form a gap between the roller small end face and the small rib end face by contact between the nail portion and the small rib end face.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: August 25, 2015
    Assignee: JTEKT CORPORATION
    Inventor: Masashi Sakaguchi
  • Publication number: 20150139584
    Abstract: A bearing assembly includes first and second rolling-element bearings each having an inner ring with a running surface for rolling elements and a guide flange that extends radially outwardly beyond the running surface for limiting axial movement of the rolling elements. The inner rings are configured such that they are in contact with each other exclusively within a contact surface diameter that is smaller than an average value of a maximum diameter of the running surface of one of the inner rings and a maximum outer diameter of that inner ring. The guide flanges are disposed on sides of the inner ring of the first rolling-element bearing and of the second rolling-element bearing that face each other axially.
    Type: Application
    Filed: October 22, 2014
    Publication date: May 21, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Katrin Hofmann, Jochen Kuhstrebe, Armin Olschewski, Arno Stubenrauch, Malinipriya Thangavelu
  • Patent number: 9022664
    Abstract: A bearing ring for a radial rolling bearing, in particular for a cylindrical roller bearing or needle bearing which has, on one of the radial surface areas thereof, a track for a set of cylindrical rolling bodies which are cageless or are guided by a cage and one or two guide flanges axially bounding the track of the rolling bodies is/are fastened to the axial end surfaces of said bearing by adhesive bonding. Each guide flange has a rectangular profile cross section with a horizontal fastening limb and a vertical flange limb and, by way of the horizontal fastening limb thereof, is adhesively bonded in an encircling axial groove in an axial end surface of the bearing ring.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 5, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jan-Rene Aust, Heinz Schäfers, Matthias Fick
  • Patent number: 9011018
    Abstract: A roller bearing of the type having a flange on which thrust loads are received shows improved ability to form an oil film at the contact surface portions of the end surface of a roller and the flange. The contact surface portions are both inclined at an angle of not less than 0.1° and not more than 1.5° with respect to the radial direction, over the entire circumferences of the respective contact surface portions.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 21, 2015
    Assignee: NTN Corporation
    Inventor: Kohei Toda
  • Publication number: 20150104125
    Abstract: A bearing assembly for rotatably supporting a shaft member having an outer ring, having a first bearing raceway, and an inner ring, having a second bearing raceway. The raceways are opposingly spaced relative to each other. The inner ring includes a plurality of tang members extending in a cantilevered configuration from at least one end of the inner ring having slots formed therebetween. Bearing members are positioned in a space between and in engagement with the first and second bearing raceways. An undercut groove extends circumferentially along an inner surface of the inner ring generally adjacent the plurality of tang members. The undercut groove is operable to increase an effective cantilever distance of the plurality of tang members. The assembly further includes a locking member engaging the plurality of tang members and exerting a compressing force upon the plurality of tang members to couple the inner ring to the shaft.
    Type: Application
    Filed: November 15, 2013
    Publication date: April 16, 2015
    Inventors: ANIL KAMATH, Apaar Sharma
  • Patent number: 9004766
    Abstract: An axial control assembly comprises a bearing assembly and a bearing mount assembly, wherein the bearing mount assembly is structured to secure the bearing assembly in an operative configuration relative to a rotatable element of a mechanical device. The bearing assembly includes an inner bearing casing and an outer bearing casing structured to rotatably engage one another. The bearing mount assembly includes at least one axial control member disposed in an abutting relation to an axial load surface of one of the inner or outer bearing casing, and the axial control member is further positioned to counteract an axial load generated by a rotational movement of the rotational element of the mechanical device.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 14, 2015
    Inventor: Gilberto Mesa
  • Publication number: 20150098825
    Abstract: A bearing arrangement, comprising a rolling bearing, which includes an inner ring, an outer ring, rolling elements interposed therebetween, and a cage for holding and separating the rolling elements, wherein the inner ring presents an inner circumferential surface. A shaft is also present, wherein the rolling bearing is mounted on the shaft via the inner circumferential surface of the inner ring. The shaft during operation is meant to oscillate in its axial direction, or is positioned in an angle ? being (90?y) degrees, wherein y is between 0 and 89, or the rolling elements during operation are exposed of an axial force F, and the cage presents means for axially guiding the rolling elements against at least one of the inner ring, the outer ring or a separate element located outside the rolling bearing. The bearing can be integrated into a wind turbine main shaft arrangement.
    Type: Application
    Filed: April 17, 2013
    Publication date: April 9, 2015
    Inventors: Hans Wendeberg, Linus Efraimsson
  • Publication number: 20150098671
    Abstract: A toroidal roller bearing, which comprises an outer ring, an inner ring and a plurality of roller elements interposed between the outer and inner rings, wherein the toroidal roller bearing allows for angular and axial displacement between the outer ring and the inner ring. The bearing includes a cage for holding the roller elements, wherein the cage provides an axial guiding feature for axially guiding the roller elements against at least one of the outer ring, inner ring and a separate element located outside the toroidal roller bearing.
    Type: Application
    Filed: April 17, 2013
    Publication date: April 9, 2015
    Inventors: Hans Wendeberg, Linus Efraimsson
  • Publication number: 20150093063
    Abstract: A bearing ring for a roller bearing includes a raceway configured to support at least one rolling-element roller and a flange at an end of the raceway extending away from the raceway and having an abutment surface for guiding the at least one rolling-element roller on the raceway. The abutment surface has a curvature that decreases monotonically from a starting point on the abutment surface to an end of the abutment surface, and the abutment surface includes at least one strongly monotonically decreasing segment.
    Type: Application
    Filed: May 24, 2012
    Publication date: April 2, 2015
    Inventors: Baozhu Liang, Michael Reugels
  • Publication number: 20150086147
    Abstract: Flanged radial bearing with rolling elements provided with an outer ring radially defined by an outer surface; an inner ring mounted inside and coaxially with the outer ring; a row of rolling elements between the two rings to allow the two rings to rotate relative to one another; and a flange secured to the outer ring and located in correspondence of an assembly groove made around said outer surface; the flange being assembled, in such a way that it cannot be disengaged, to the outer ring.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 26, 2015
    Applicant: Aktiebolaget SKF
    Inventors: Roberto MOLA, Matteo PASTORINO, Riccardo RESTIVO, Gianpiero SCALTRITI
  • Publication number: 20150055906
    Abstract: A bearing assembly includes first and second rolling-element bearings each having an inner ring that is connectable to a shaft for rotation therewith, each inner ring having a running surface (raceway) for rolling elements and an intermediate ring disposed axially between the inner ring of the first rolling-element bearing and the inner ring of the second rolling-element bearing. The intermediate ring has a maximum outer diameter smaller than a maximum diameter of the running surface of the inner ring of the first rolling-element bearing and smaller than a maximum diameter of the running surface of the inner ring of the second rolling-element bearing. The intermediate ring has an axial dimension that is smaller than a radial dimension of a cross-section of the intermediate ring, and that is smaller than 0.5 mm.
    Type: Application
    Filed: June 23, 2014
    Publication date: February 26, 2015
    Inventors: Katrin Hofmann, Armin Olschewski, Arno Stubenrauch, Malinipriya Thangavelu
  • Patent number: 8956054
    Abstract: An inner raceway (3) having a rolling element raceway facing radially outward, for an angular contact bearing arrangement, and particularly an angular ball bearing arrangement, where a cylindrical surface which is situated at the furthest outward position radially is included as a seal seat. Such inner raceways are used in wheel bearing units, for example, which have an orbital rivet bond, which in turn can also form an end-face gearing (7). The orbital rivet bond and the axial extension (8) of the inner raceway form an annular gap (20) which leads to a configuration where a decoupling of loads from the inner raceway (3) prevents an undesired deformation of the same. In addition, advantages result from the sealing of the region of the orbital rivet bond and/or the end-face gearing (7) thereof.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: February 17, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Niebling, Roland Langer
  • Patent number: 8950944
    Abstract: This instrumented bearing comprises a bearing and a sensor unit for sensing the angular position of the rotatable ring with respect to the fixed ring of the bearing, an encoder element which is fastened to the rotatable ring, and a sensing element fastened to the fixed ring, adapted to sense a parameter representative of the rotation speed of the rotatable ring. The sensing element is mounted in a casing fastened with the fixed ring. The casing provides a peripheral wall mounted on the fixed ring and which includes at least one snap portion adapted to be received in a recess of a surface of the fixed ring, and at least one axial blocking portion adapted to abut against a lateral surface of the fixed ring, perpendicular to the rotation axis of the instrumented bearing. Each snap portion and each blocking portion alternate around a central axis (X6).
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: February 10, 2015
    Assignee: Aktiebolaget SKF
    Inventors: Francois Niarfeix, Alexandre Taillepied
  • Patent number: 8950942
    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.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: February 10, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Haecker, Norbert Alaze
  • Patent number: 8899839
    Abstract: A bearing ring for a roller bearing includes a raceway for at least one roller that includes an at least partially spherically formed roller end surface having a first curvature. A flange for transferring axial forces extends from an end of the raceway and has a flange surface that faces towards the roller end surface. A spherical flange surface section having a second curvature is defined on the flange surface. The first curvature differs from the second curvature such that a first gap (d1) exists between the spherically formed roller end surface and the spherical flange surface section. The flange surface also includes an opening flange surface section having a third curvature, which is less than the second curvature, such that a second gap (d2) exists between the roller end side and the opening flange surface section. The second gap is larger than the first gap.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: December 2, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Baozhu Liang, Michael Reugels
  • Patent number: 8888374
    Abstract: A bearing with antiskid design used in combination with a circular spline to form a harmonic drive, and the circular spline is provided with an inner toothed portion, the bearing includes: an elliptical gear plug, a flexible ball bearing, and a flexible spline. Between the flexible ball bearing and the flexible spline are disposed a first and second antiskid members, and the arrangement of the first and second antiskid members prevents the axial slippage between the flexible ball bearing and the flexible spline, thus improving stability and transmission accuracy of the harmonic drive.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: November 18, 2014
    Assignee: Hiwin Technologies Corp.
    Inventors: Fang-Ling Nien, Chia-Yin Tsai
  • Publication number: 20140328554
    Abstract: A roller bearing of the type having a flange on which thrust loads are received shows improved ability to form an oil film at the contact surface portions of the end surface of a roller and the flange. The contact surface portions are both inclined at an angle of not less than 0.1° and not more than 1.5° with respect to the radial direction, over the entire circumferences of the respective contact surface portions.
    Type: Application
    Filed: November 19, 2012
    Publication date: November 6, 2014
    Applicant: NTN CORPORATION
    Inventor: Kohei Toda
  • Patent number: 8834034
    Abstract: An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 16, 2014
    Assignee: NSK Ltd.
    Inventors: Masato Higuchi, Noriyuki Takeo, Yoshiaki Komura
  • Patent number: 8664944
    Abstract: An angle measuring system includes a first component group and a second component group, the first component group being mounted in a manner allowing rotation about an axis relative to the second component group. The first component group includes a ring having a running surface and an angle scaling. The second component group has a further ring having a further running surface, as well as a sensor for scanning the angle scaling. Rolling elements are arranged between the running surfaces, the angle scaling being applied such that a geometric pattern of the angle scaling in a first region differs from a geometric pattern of the angle scaling in a second region as a function of radial runouts of the running surfaces and/or of the rolling elements.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: March 4, 2014
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventor: Johann Mitterreiter
  • Patent number: 8636420
    Abstract: A flange part of an inner ring member (11) used in a roller bearing has a thin-wall part (13) having a relatively small diameter direction thickness on its end face side, and a thick-wall part (14) having a relatively large diameter direction thickness on its center side, and an inner diameter surface has a contact part (15) fitted to a shaft at its center part, a non-contact part (16) apart from the shaft in a diameter direction at its outer edge, and a ridge line part (17) positioned on the boundary between the contact part (15) and the non-contact part (16). The axial direction width L1 of the thin-wall part (13) from an end face (12) of the inner ring member (11) and the axial direction distance L2 between the end face (12) and a ridge line part (17) of the inner ring member (11) have a relation of L1>L2.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: January 28, 2014
    Assignee: NTN Corporation
    Inventors: Shiro Ishikawa, Ryutaro Oka, Masanori Ueno, Yoshimitsu Hirasawa
  • Patent number: 8632256
    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: Grant
    Filed: May 21, 2008
    Date of Patent: January 21, 2014
    Assignee: NTN Corporation
    Inventors: Akihiko Katayama, Masaru Kuroda, Haruki Yamada
  • Patent number: 8632257
    Abstract: A bearing ring comprises a raceway for a rolling member as well as at least one lateral rim for axially guiding the rolling member. To produce the bearing ring a notch is introduced into a running surface of the bearing ring which faces the rolling member. A final contour of the bearing ring is created by means of a hard turning process.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: January 21, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander Weidner, Markus Hennefelder, Paul Graf
  • Patent number: 8596876
    Abstract: A roller bearing comprises at least two rows of rollers disposed between an inner ring and an outer ring. At least two tracks guide the respective rows of roller and are defined in the axial direction of the inner ring or the outer ring. At least one flange abuts axial ends of axially-adjacent rows of rollers and extends radially from a radially outer side or a radially inner side of the inner ring or the outer ring. At least one recess is defined on the side of the inner ring or the outer ring that is opposite of the radially outer side or the radially inner side of the inner ring or the outer ring, from which the at least one flange radially extends. The at least one recess at least partially overlaps the at least one flange in the axial direction.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: December 3, 2013
    Assignee: Aktiebolaget SKF
    Inventors: Armin Olschewski, Arno Stubenrauch
  • Publication number: 20130251297
    Abstract: A bearing ring comprises a raceway for a rolling member as well as at least one lateral rim for axially guiding the rolling member. To produce the bearing ring a notch is introduced into a running surface of the bearing ring which faces the rolling member. A final contour of the bearing ring is created by means of a hard turning process.
    Type: Application
    Filed: May 13, 2013
    Publication date: September 26, 2013
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Alexander WEIDNER, Markus HENNEFELDER, Paul GRAF