Roller Bearing Patents (Class 384/618)
  • Patent number: 10093163
    Abstract: A drive module for a powertrain of a hybrid vehicle and a method for assembling the drive module for the powertrain of the hybrid vehicle, having a housing, a friction clutch with a pressure plate which is axially displaceable by means of an actuating arrangement, a clutch plate and with a clutch disk arrangement positioned therebetween, a hub, wherein this hub is fixedly connected to the clutch disk arrangement, and an electric machine which has a rotor with a rotor carrier and a stator which is fixed at a stator carrier. The axial arrangement or alignment of the clutch disk arrangement relative to the pressure plate and clutch plate is determined by an adjusting arrangement, wherein the adjusting arrangement is functionally arranged between the hub and a supporting element which is axially fixed to the housing of the drive module.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: October 9, 2018
    Assignee: ZF Friedrichshafen AG
    Inventors: Guido Schmitt, Sven Ludsteck, Florian Model
  • Patent number: 9196777
    Abstract: Capable of supporting large radial loads due to heavy panels, with a simplified assembly but without compromise in terms of precision and robustness. It comprises an annular structural casing (1), a toothed crown (2) mounted in the structural casing (1), whereon an endless screw (3) actuated by a motor (4) tangentially meshes, the toothed crown (2) of which comprises a central annular protuberance (5) with a toothing that meshes with the endless screw (3), and the circular projections (6) of which of the body of the toothed crown (2) comprise a plurality of threaded holes (7) for connecting the horizontal shafts that support the solar panels for their zenithal orientation, where the toothed crown (2) comprises a toothed track whereon the endless screw (3) tangentially meshes, and two independent raceways.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: November 24, 2015
    Assignee: TGB Rodamientos, S.L.
    Inventor: Francisco Lucas Morata
  • Patent number: 8961029
    Abstract: Construction of a roller thrust bearing is achieved wherein it is possible to keep a thrust race from coming apart from a cage without wear or cracking occurring in a cage element and without impact occurring between the thrust race and cage even when used in an application wherein a rotating section rotates at high speed, or when used in an application wherein relative displacement between members of a rotating section is large. The thickness of metal plate of a first cage element 35 is preferably ? the thickness of metal plate of a second cage element 36 or less. Alternatively, the thickness of metal plate of a second cage element 56 is preferably ? the thickness of metal plate of a first cage element 55 or less.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 24, 2015
    Assignee: NSK Ltd.
    Inventors: Ryosuke Yamada, Tomoyuki Yokota
  • Publication number: 20150023626
    Abstract: A top drive thrust bearing configured for use in a heavy loaded top drive system. The top drive thrust bearing includes an upper plate; a lower plate; and a plurality of rollers disposed between the upper plate and the lower plate. The composition of the top drive thrust bearing comprising a non-vacuum arc remelted steel including, in weight percent (%), about 0.15% to about 0.18% carbon (C), about 0.15% to about 0.4% silicon (Si), about 0.4% to about 0.7% manganese (Mn), 0% to about 0.025% phosphorus (P), about 0.0005% to about 0.002% sulfur (S), about 0.0002% to about 0.0007% oxygen (O), about 0.001% to about 0.003% titanium (Ti), about 1.3% to about 1.6% chromium (Cr), about 3.25% to about 3.75% nickel (Ni), about 0.0005% to about 0.003% calcium (Ca), about 0.15% to about 0.25% molybdenum (Mo), balance iron (Fe). The top drive thrust bearing of the top drive system is configured to achieve an extended life cycle at least about equivalent to a life factor of three for a vacuum arc remelted steel.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 22, 2015
    Applicant: Roller Bearing Company of America, Inc.
    Inventor: Steven Parkinson
  • Patent number: 8709173
    Abstract: A thrust bearing component is formed of cold-reduced steel sheets and strip having surface roughness of Rmax?2 ?m and provided by cold rolling a high-carbon steel containing 0.9 wt % to 1.2 wt % of carbon, 1.2 wt % to 1.7 wt % of chrome, 0.1 wt % to 0.5 wt % of manganese, and 0.15 wt % to 0.35 wt % of silicon.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: April 29, 2014
    Assignee: NTN Corporation
    Inventors: Tomoaki Kawamura, Yasuyuki Watanabe, Kousuke Obayashi
  • Publication number: 20140050428
    Abstract: A turret/vessel bearing arrangement and method for replacing bearings in situ without removing other bearings. The bearings are capable of being separated. A removable axial spacer secures the vessel and the turret into engagement with the upper and lower thrust bearings. Removal of the spacer allows increased separation between vessel and turret flanges that sandwich the thrust bearings. The mid radial bearing assembly includes one or more radially arranged bearing pads that allow for limited axial displacement of the turret with respect to the vessel during thrust bearing replacement while still bearing radial loads and allowing rotation. The addition of a temporary thrust bearing allows the vessel to weathervane about the turret while thrust bearing are replaced in situ.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Inventors: STEPHEN P. LINDBLADE, WILLIAM LOUIS FONTENOT, JAMES NELSON PRATT
  • Patent number: 8591122
    Abstract: An axial bearing arrangement includes a first bearing ring forming a structural unit with a radially inwardly directed axial projection with a radially outwardly directed resilient element and a first running surface, a second bearing ring with a radially outwardly arranged axial projection with a radially inwardly directed resilient element and a second running surface, and a single-piece rolling body cage which receives distributed over the circumference rolling bodies which roll on the running surfaces wherein the rolling body cage radially engages over the two resilient elements.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: November 26, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: James Kevin Brown
  • Patent number: 8573852
    Abstract: A heavy earth-moving machine having a lower structure and an upper structure rotatably supported by the lower structure for rotation about an axis. A substantially circular lower rail is mounted on the lower structure and includes an inclined lower surface. A substantially circular upper rail is mounted on the upper structure and includes a substantially planar upper surface that is oriented substantially perpendicular to the axis. Tapered rollers support the upper rail above the lower rail for rotation of the upper rail about the axis. Each roller engages both the upper surface and the lower surface and defines and rotates about a roller axis that intersects the axis at a non-perpendicular angle.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 5, 2013
    Assignee: Harnischfeger Technologies, Inc.
    Inventor: Jason Knuth
  • Publication number: 20130236291
    Abstract: A device for uncoupling a bearing carrier in a turbomachine, the bearing carrier including an upstream part and a downstream part including a plurality of upstream orifices respectively facing a plurality of downstream orifices. The uncoupling device includes rupture screws each passing through an upstream orifice and a downstream orifice, and at least a mechanism for double centering of a rupture screw with respect to the upstream orifice and to the downstream orifice respectively. The mechanism for double centering is independent of the upstream and downstream parts of the bearing carrier and of the rupture screw, and is configured to collaborate with the upstream part of the rupture screw such that when the rupture screw breaks, the upstream part carries with it the mechanism for double centering. A turbomachine can include such an uncoupling device.
    Type: Application
    Filed: November 25, 2011
    Publication date: September 12, 2013
    Applicant: SNECMA
    Inventors: Eric Nicolas Decerle, Regis Eugene, Henri Servant
  • Patent number: 8529137
    Abstract: The bearing cage has a first flange, a second flange, and a plurality of cage bars extending between the first flange and the second flange so as to form and define outer boundaries for a plurality of pockets. The first flange and the second flange are each bent inward toward the pocket and then extend parallel in a vertical direction, forming a contact surfaces. The contact surfaces are in contact at each end of the rollers arranged in the pocket. The contact surfaces of the bearing cage present a large contact area between the ends of the rollers and the ends of the pockets where there is a lubricant film. Also, the surface of the contact surfaces is smooth.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: September 10, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: James Brown, Seth Claus, Michael Turner
  • Patent number: 8523453
    Abstract: An axial radial bearing for a rotor shaft of a wind power installation, which has a vertical circular outer disk, inner ring arranged coaxially to the outer disk, and two circular shaft washers axially arranged on both sides of the outer disk. At least one row of rolling bodies, held at equal distances by a bearing cage, extends between the shaft washers and outer disk, forming the rolling bearings for receiving axial forces, while at least one other row of rolling bodies, optionally held at equal distances by another bearing cage, is arranged between the outer disk and inner ring, forming a third rolling bearing for receiving radial forces. The two rolling bearings for receiving radial forces are formed by two tapered roller bearings oriented towards the longitudinal axis of the bearing by the small front sides, or by a double-row angular ball bearing or by two axial ball bearings.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 3, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Tim Loeschner, Rudolf Zeidlhack
  • Patent number: 8511904
    Abstract: A ready-to-install needle bearing including a thin-walled outer ring (1) that is shaped without cutting and is provided with radially inwardly-facing stop rims (2) on both sides. Needle rollers (7) roll between the stop rims (2) on an associated external raceway (9). The inventive needle bearing is characterized in that an associated internal raceway (10) is formed by a thin-walled inner ring (3) which is shaped without cutting and is fitted with radially outwardly-facing stop rims (4) on both sides. The needle rollers (7) roll in a cageless manner or are disposed in a cage such that a captive ready-to-install needle bearing unit is created by using a positive gripping action, thus dispensing with the need for a part that is to be mounted having to act as a raceway.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: August 20, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Erich Lunz
  • Patent number: 8414194
    Abstract: A cylindrical roller bearing assembly capable of increasing the load bearing capability with respect to the thrust load and of easily controlling the shape of the cylindrical roller is provided. The cylindrical roller bearing assembly includes an inner ring, an outer ring and a plurality of cylindrical rollers. One or both of the inner and outer rings has/have a collar. A surface portion encompassed within the region of radial dimensions of 0.12 Da to 0.20 Da as measured from an outer diametric edge of an end face of each of the cylindrical rollers to a roller axis, wherein Da represents an outer diameter of each of the cylindrical rollers is rendered to be a crowned portion of a tapered shape inclined at an angle ?r of 0.25 to 1° relative to a plane perpendicular to the roller axis.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: April 9, 2013
    Assignee: NTN Corporation
    Inventor: Hideji Ito
  • Patent number: 8414195
    Abstract: A thrust bearing assembly having a plurality of rollers positioned in a cage is provided. A first race washer is positioned on a first axial side of the rollers and the cage, with the first race washer including a first axially extending flange axially overlapping the cage and the rollers, and having at least one protrusion extending in a direction away from the cage. A first retention band including a first axially extending band and a first retaining flange that extends radially from the first axially extending band is provided. The first retention band has at least one recess or opening and is complementary in size to the first race washer flange and engagable thereon. Engagement is accomplished via the at least one protrusion on the first axially extending flange engaging the at least one recess or opening in the first retention band. The first retaining flange has a width that is sized to overlap a portion of the cage on a second axial side.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: April 9, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: James Kevin Brown
  • Patent number: 8376616
    Abstract: In a downhole motor bearing section having a cylindrical mandrel rotatably disposed within a cylindrical housing, a bi-directional thrust bearing is disposed within a four-shouldered annular containment chamber formed partially into the inner cylindrical wall of the housing and partially into the outer cylindrical wall of the mandrel. Under on-bottom loading conditions, thrust loads are transferred through the thrust bearing by the upper shoulder of the housing and the lower shoulder of the mandrel. The radial widths of these two shoulders are both symmetrical about the centerline of the thrust bearing such that on-bottom thrust loads are transferred non-eccentrically to the thrust bearing, thereby avoiding twisting loads on the thrust bearing races, increasing the effective on-bottom load capacity of the thrust bearing and extending its service life.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: February 19, 2013
    Assignee: National Oilwell Varco, L.P.
    Inventor: Frederick William Pheasey
  • Patent number: 8371760
    Abstract: A rolling bearing, particularly a slewing connection (1), comprising an outer bearing ring (2) and an inner bearing ring (3) and rolling elements arranged between said outer and inner bearing rings for rolling contact with associated raceways, a stop means for limiting an angle of rotation of the rolling bearing being arranged within the rolling bearing, whereby a first solution offered by the invention, the outer bearing ring (2) comprises on an inner peripheral surface a recess (14) which extends in peripheral direction and is limited at two ends by a first stop lug (15), the inner bearing ring (3) comprises on an outer peripheral surface a guide groove (16) which extends in peripheral direction and is limited at two ends by a second stop lug (17), and a guide element (18) arranged in the guide groove (16) connects the inner and outer bearing rings (3,2) to each other by positive engagement.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: February 12, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Jürgen Stölzle
  • Patent number: 8328430
    Abstract: A thrust roller bearing 10 is provided in which one half of total gap which results from adding up an outer diameter side in-bearing gap 22 and an inner diameter side in-bearing gap 23 in diametrical direction is made larger than the amount of eccentricity between a member 51 which supports an outer ring 11 and a member 53 which supports an inner ring 14. When inside diameter at distal end of an outer locking portion 19 along a distal edge portion of an outer flange 13 is ?D1, outside diameter of a cage 18 is ?D2, outside diameter at a distal end of an inner locking portion 20 along a distal edge portion of an inner flange 16 is ?D3, inside diameter of the cage 18 is ?D4 and thickness of the cage 18 is t, A, B are defined as A=(D2?D1)/t and B=(D3?D4)/t, 0.1?A, B?5 is satisfied.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: December 11, 2012
    Assignee: NSK Ltd.
    Inventors: Satoshi Masuda, Hiromichi Takemura
  • Patent number: 8303263
    Abstract: The present invention relates to a compressor, wherein a rotary shaft 140 having a swash plate 144 coupled thereto is used to linearly reciprocate a piston 150 in a cylinder bore 134 formed in front and rear cylinder blocks 130 and 130?. The rotary shaft 140 has a flow channel 142 formed therein and inlets 142a formed to communicate with the flow channel 142. A hub 146 is formed in the swash plate 144, and a shaft hole 146a, through which the rotary shaft 140 passes, is formed in the center of the hub 146. Communication holes 146b are formed in the hub 146 to communicate with the inlets 142a of the flow channel 142. First races 148a are coupled to the hub 146. A rotary shaft hole 148d is formed in the first race 148a, which has a thickness greater in its outer peripheral portion than its inner peripheral portion.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: November 6, 2012
    Assignee: Halla Climate Control Corp.
    Inventors: Kweon-Soo Lim, Duck-Bin Yoon, Min-Gyu Kim, Jung-Jae Lee
  • Publication number: 20120269477
    Abstract: A ring element, particularly a thrust bearing race ring, which has a peripheral wall, through which a radial load exerting an interference fit occurs. The peripheral wall is configured such that it forms zones with a large overlap and zones with a reduced overlap that succeed each other in a peripheral direction.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 25, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Alexander PABST, Andreas ZIEGLER, Frank BEECK
  • Publication number: 20120114274
    Abstract: In a downhole motor bearing section having a cylindrical mandrel rotatably disposed within a cylindrical housing, a bi-directional thrust bearing is disposed within a four-shouldered annular containment chamber formed partially into the inner cylindrical wall of the housing and partially into the outer cylindrical wall of the mandrel. Under on-bottom loading conditions, thrust loads are transferred through the thrust bearing by the upper shoulder of the housing and the lower shoulder of the mandrel. The radial widths of these two shoulders are both symmetrical about the centerline of the thrust bearing such that on-bottom thrust loads are transferred non-eccentrically to the thrust bearing, thereby avoiding twisting loads on the thrust bearing races, increasing the effective on-bottom load capacity of the thrust bearing and extending its service life.
    Type: Application
    Filed: March 10, 2010
    Publication date: May 10, 2012
    Applicant: NATIONAL OILWELL VARCO,L.P.
    Inventor: Frederick William Peasey
  • Publication number: 20120106887
    Abstract: A vibration isolator for use between a support structure and a roller thrust bearing including a first race, a second race, a bearing cage and at least one roller element. The vibration isolator includes a radially extending portion with a mating surface, a bearing surface, an inner peripheral edge and an outer peripheral edge, the radially extending portion being substantially disk-shaped. An annular flange extends axially from one of the inner peripheral edge and the outer peripheral edge of the radially extending portion, and at least one groove is defined by the mating surface of the radially extending portion. The bearing surface is configured to abut one of the first race and the second race and the mating surface is configured to abut the support structure such that a void is defined between the at least one groove and the support structure.
    Type: Application
    Filed: June 28, 2011
    Publication date: May 3, 2012
    Applicant: KOYO BEARINGS USA LLC
    Inventors: Justin Brubaker, Dana Patoine, Christopher Bean
  • Publication number: 20120051682
    Abstract: A bearing part having long life against rolling contact fatigue, excellent in anti-crack strength and restricted in an increase of aged dimensional change, a heat treatment method thereof, and a rolling bearing including the bearing part are obtained. Steel for a bearing part is subjected to carbonitriding at a carbonitriding temperature exceeding the A1 transformation temperature, and cooled to a temperature lower than the A1 transformation temperature. The steel is reheated to a temperature for quenching that is not lower than the A1 transformation temperature but lower than the carbonitriding temperature, and then quenched.
    Type: Application
    Filed: November 8, 2011
    Publication date: March 1, 2012
    Applicant: NTN Corporation
    Inventor: Chikara Ohki
  • Publication number: 20110266774
    Abstract: A dolly for the transport of elongated loads which includes an adjustable steer linkage assembly, an adjustable steer ratio, means for switching between rear- and forward-steering, and manual over-ride of the self-steering configuration. All of these adjustments can be achieved without the need to manually delink subassemblies.
    Type: Application
    Filed: May 3, 2010
    Publication date: November 3, 2011
    Inventor: John Stewart GREGG
  • Publication number: 20110262070
    Abstract: A suspension strut bearing (1) is provided with a vehicle-body attachment element (3) and a guide ring (5). A sliding bearing (9) or rolling bearing (11) that can rotate about a center axis (7) is arranged between the vehicle-body attachment element (3) and the guide ring (5). The guide ring (5) has at least one metallic reinforcement (17) and forms an axial and/or radial thrust bearing (13) for a coil spring (15). In addition, a manufacturing method for a component of a suspension strut bearing (1) is provided.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 27, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Alexander Zernickel, Ernst Neuwirth
  • Patent number: 7993062
    Abstract: A rotating combination thrust plate and thrust shaft flange (10), and a thrust bearing assembly (40) incorporating the rotating flange plate combination (10), in which the rotating flange plate combination (10) has a generally cylindrical body portion (22) which has a rotating base surface (24) and a lateral surface (23), a frustoconical body portion (29) which has a frustoconical surface (28), and a bore (12) extending through the cylindrical and frustoconical body portions (22 and 29) and having a first bore section (14) and a second bore section (16) wherein the second bore section (16) is adjacent the rotating base surface (24) and has a smaller diameter then the first bore section (14). The first and second bore sections meet at a junction (18) defining a lip (21) which is designed to support a complimentary lip (42) of a bore shaft (20) thereby restricting the movement of the bore shaft (20) in the direction of thrust in an extruder.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: August 9, 2011
    Assignee: Davis-Standard, LLC
    Inventor: Ernest W. Plasse
  • Patent number: 7976687
    Abstract: Provided is a roll unit to be dipped in a surface treatment liquid of a copper foil, wherein a bearing box for housing a roil shaft is configured from two bearing boxes that are divisible, one of the bearing boxes is configured from a roll-side bearing box arranged on a roll main body-side and the other bearing box is configured from a shaft end-side bearing box arranged on the shaft end-side of the roll, a shaft sleeve covering an outer periphery of the roll shaft is provided in the roll-side bearing box and an oil seal is provided along an outer periphery of the shaft sleeve, and a bearing for rotatably supporting the shaft is disposed in the shaft end-side bearing box.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: July 12, 2011
    Assignee: JX Nippon Mining & Metals Corporation
    Inventor: Haruo Sato
  • Patent number: 7963703
    Abstract: A thrust roller bearing including: a pair of races each of which has an annular plate; a cage interposed between the pair of races, formed by a single annular plate including a bent portion bent in an intermediate region in a radial direction of the cage such that a plurality of projecting portions to project in a thickness direction of the cage are formed on a first side and a second side of the cage, and a plurality of pockets stamped out in the thickness direction at predetermined intervals in a circumferential direction of the cage; and a plurality of rollers received respectively in the pockets. At least two projecting portions are formed on each of the first side and the second side of the cage; and a plurality of race-contacting projection portions are arranged on a surface of at least one of the two projecting portions on at least one of the first side and the second side of the cage at predetermined intervals in the circumferential direction of the cage.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: June 21, 2011
    Assignee: JTEKT Corporation
    Inventors: Wataru Takamizawa, Hiroshi Sato, Kanji Kawasaki, Masaki Toyama
  • Patent number: 7942586
    Abstract: In a thrust needle bearing employing lubricating oil and having rollers held by a cage and rolling on races, the value of the arithmetic average roughness Ra of roller is 0.03 to 0.15 ?m. Even when the bearing is used under the conditions where lubrication is lean or lubrication characteristics are wrong, the rolls can be prevented from being worn at the contact parts thereof with the pocket guide face of the cage and the life of the rollers and races can be increased.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: May 17, 2011
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Hideyuki Tsutsui
  • Patent number: 7927022
    Abstract: Even when used at a high rotation speed, outside parts in relation to the radial direction of a cage 3, of the circumferential parts of a pocket 7 are kept from being worn away by outside end surfaces 21 of rollers 2. Moreover the rollers 2 are kept from sliding on the inside the pockets 7, to thereby stabilize the performance of rotation support parts. The outside end surface 21 of the roller 2 is made a ball convex surface, so that the center part of the outside end surface 21 can be freely in contact with the inner peripheral surface of a second outside cylindrical portion 14. In a condition with the rollers 2 displaced radially outward of the cage 3 due to centrifugal force, a PV value of a rubbing part between the outside end surface 21 and the opposite surface is kept low, and the wear of this rubbing part is suppressed.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: April 19, 2011
    Assignee: NSK Ltd.
    Inventors: Satoshi Kadokawa, Makoto Hinohara, Syuuichi Tsubouchi, Noriyuki Takeo, Makoto Fujinami
  • Publication number: 20110081106
    Abstract: A manufacturing method of a thin component is characterized by heating a thin component, and thereafter, while sizing with molds and using molds as cooling media, performing one of quenching and isothermal transformation processes on thin component. Thus, a manufacturing method of a thin component without warping or deformation in heat treatment with even and high hardness, a bearing ring, a thrust needle roller bearing, a manufacturing method of a rolling bearing ring, a rolling bearing ring, and a rolling bearing can be obtained.
    Type: Application
    Filed: December 13, 2010
    Publication date: April 7, 2011
    Applicant: NTN CORPORATION
    Inventors: Kikuo MAEDA, Yuuki Kataoka, Mitsuo Sasabe
  • Publication number: 20110049829
    Abstract: Suspension thrust bearing device (5), particularly for a motor vehicle, comprising a rolling bearing forming an axial thrust bearing and an annular end plate (18) provided with means of axial retention of the rolling bearing, the rolling bearing comprising an upper ring (15), a lower ring (16) and a plurality of rolling elements (17) positioned between the upper ring and the lower ring. The device comprises both a dynamic seal (19b) between the end plate (18) and the lower ring (16), and a static seal (19a) between the end plate (18) and the upper ring (15).
    Type: Application
    Filed: September 5, 2008
    Publication date: March 3, 2011
    Inventors: Jean-Sylvain Migliore, Samuel Viault, Florence Crenn
  • Patent number: 7878715
    Abstract: A cage of a thrust roller bearing includes: a pair of crank-shaped bent portions arranged in a circumferential direction of the cage; a pair of inner wall surfaces arranged in a radial direction of the cage; and a pocket for housing a roller defined by the pair of bent portions and the pair of inner wall surfaces and formed by punching the cage. Radially inner one of the inner wall surfaces is formed as a guiding surface for guiding a substantial roller PCD position of an end surface of the roller. Each of the pair of bent portions includes a first extended portion extending in one of cage thickness directions and a second extended portion extending in the other cage thickness direction. A roller retaining pawl for retaining the roller is provided at each of the first and second extended portions so as to protrude into the pockets.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: February 1, 2011
    Assignee: Jtekt Corporation
    Inventors: Kazuyuki Kotani, Yoshihito Nakashima
  • Publication number: 20100227749
    Abstract: A tapered roller thrust bearing is disposed in each of both sides in an axial direction of a cylindrical roller bearing with aligning housing ring which is provided with an inner ring, an outer ring, cylindrical rollers and an aligning housing ring. The tapered roller thrust bearing is constituted by disposing tapered rollers between a first raceway surface which is an outer side face in the axial direction of the outer ring and a second raceway surface of a side raceway ring disposed in an outer side in the axial direction of the outer ring. An intersection of lines extended from generatrices of each of the tapered rollers which are in contact with the first raceway surface and the second raceway surface, and an intersection of lines extended from the first raceway surface and the second raceway surface are disposed on a curvature center of the aligning sliding surface.
    Type: Application
    Filed: September 19, 2008
    Publication date: September 9, 2010
    Applicant: JTEKT CORPORATION
    Inventor: Takeharu Uranishi
  • Publication number: 20100142876
    Abstract: A process for producing a graphite cage for an anti-friction bearing, which cage holds a plurality of anti-friction elements, characterized in that a cage injection moulding is injected in an injection moulding process from a mass comprising carbon mesophase powder, and this cage injection moulding is subsequently heat-treated in order to transform the carbon from the mesophase into pure graphite.
    Type: Application
    Filed: July 15, 2008
    Publication date: June 10, 2010
    Applicant: SCHAEFFLER KG
    Inventors: Knut Auffahrt, Juergen Gierl
  • Publication number: 20100107455
    Abstract: In one aspect of the invention, a trenching machine has at least one roller assembly comprising a body rotationally supported by an axle exteriorly mounted to a trenching chain or wheel. At least a portion of the body comprises a substantially conical shape.
    Type: Application
    Filed: January 22, 2009
    Publication date: May 6, 2010
    Inventors: David R. Hall, Neil Cannon
  • Patent number: 7707723
    Abstract: A method is provided for producing a roller thrust bearing having a plurality of rows of rollers, the bearing featuring reduced differential slip, reduced friction and wear, and increased longevity without flaking. The method includes forming a cage to accommodate the rollers, crowning the rollers, and arranging the rollers in pockets such that the rollers held by a pocket have respective end surfaces in direct contact with each other.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: May 4, 2010
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Kikuo Maeda, Tomoaki Kawamura, Hirokazu Nakashima, Takumi Fujita, Mitsuo Sasabe
  • Publication number: 20100098370
    Abstract: Roller bearing (100) for mounting a roller journal (210) of a roller (200) in a roller arm (300) of a hot dip coating installation, wherein the roller (200) can be dipped into a metal bath (400) with the aid of the roller arm and is used therein for guiding a strip (500) running through the metal bath. In order to improve known roller bearings for hot dip coating installations to the extent that the bearing arrangement is not adversely affected by a skewed positioning of the roller arm, it is proposed according to the invention to configure the roller bearing cardanically.
    Type: Application
    Filed: January 22, 2008
    Publication date: April 22, 2010
    Inventors: Peter De Kock, Ronald Jabs, Hermann Erwig
  • Publication number: 20090263067
    Abstract: The invention relates to a roller bearing comprising a roller bearing ring. In order to produce a roller bearing that has a high rotational speed value and operational load using minimum quantity lubrication and in which the heat produced in the bearing can be removed in a rapid and reliable manner, the roller bearing ring is made of a material composite. The first material composite component forms the running surface and is made of a refractory metal or a sintering material, the thermal conductivity and heat resistance thereof being higher than the thermal conductivity and heat resistance of the at least one additional material composite component which forms the base body of the roller bearing ring.
    Type: Application
    Filed: May 23, 2007
    Publication date: October 22, 2009
    Applicant: SCHAEFFLER KG
    Inventors: Edgar Streit, Oskar Beer
  • Patent number: 7594762
    Abstract: A thrust needle roller bearing has a washer formed of a thin steel plate and needle rollers, at least said washer has a nitrogen enriched layer at a surface layer portion, amount of retained austenite in said surface layer portion is at least 5 volume % and at most 25 volume %, and austenite grain number of said surface layer portion is 11 or higher. Thus, a long life thrust needle roller bearing resistant to an early failure caused by surface damage such as surface-originated flaking and also resistant to common, load dependent rolling contact fatigue can be provided.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: September 29, 2009
    Assignee: NTN Corporation
    Inventors: Yasuyuki Watanabe, Kousuke Obayashi
  • Patent number: 7572062
    Abstract: A axial tapered roller bearing comprising an upper pressure disk, a lower pressure disk and tapered rollers between the pressure disks which are kept at uniform intervals from one another in the circumferential direction by a disk cage. The inner surface of the one pressure disk is a circulation path running radially obliquely outward for the tapered rollers and a circumferential outer rim which, with its annular surface facing the tapered rollers, is in radial supporting contact with the outer end faces of the tapered rollers, while the inner surface of the other pressure disk is formed as a flat mating circulation path for the tapered rollers. The annular surface of the outer rim of the one pressure disk has a concave curvature, and the outer end faces of the tapered rollers have a convex curvature and both in the vertical and in circumferential directions, a lubricating wedge with a constant geometry is formed which is suitable for hydrodynamic pressure development by a lubricant.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: August 11, 2009
    Assignee: Fag Kugelfischer AG
    Inventors: Diethmar Morawski, Erwin Treu
  • Publication number: 20090123105
    Abstract: A thrust roller bearing 10 is provided in which one half of total gap which results from adding up an outer diameter side in-bearing gap 22 and an inner diameter side in-bearing gap 23 in diametrical direction is made larger than the amount of eccentricity between a member 51 which supports an outer ring 11 and a member 53 which supports an inner ring 14. When inside diameter at distal end of an outer locking portion 19 along a distal edge portion of an outer flange 13 is ?D1, outside diameter of a cage 18 is ?D2, outside diameter at a distal end of an inner locking portion 20 along a distal edge portion of an inner flange 16 is ?D3, inside diameter of the cage 18 is ?D4 and thickness of the cage 18 is t, A, B are defined as A=(D2?D1)/t and B=(D3?D4)/t, 0.1?A, B?5 is satisfied.
    Type: Application
    Filed: June 22, 2006
    Publication date: May 14, 2009
    Applicant: NSK LTD.
    Inventors: Satoshi Masuda, Hiromichi Takemura
  • Patent number: 7513043
    Abstract: A support structure carries a thrust load of a transmission which includes a torque converter having an impeller and a turbine opposite to each other with a stator therebetween. A thrust needle roller bearing having needle rollers arranged in two rows is provided at, at least one of places respectively between the stator and the impeller and between the stator and the turbine. The support structure carrying a thrust load of the transmission, a method of manufacturing the support structure and the thrust needle roller bearing are thus obtained, with an improvement in inflow and outflow of a lubricating oil, a reduction of the differential slip of the needle rollers, and an improvement in strength durability.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: April 7, 2009
    Assignee: NTN Corporation
    Inventors: Kousuke Obayashi, Tetsuya Hayashi, Shinji Oishi
  • Publication number: 20080285906
    Abstract: The invention relates to a bearing set for a shaft to be guided in an axially restricted and exact manner, a running wheel or the like for machine units. The aim of the invention is to devise less expensive bearings for receiving comparatively low axial back pressure forces. The bearing set consists of an angular ball baring receiving axial pressure forces due to operation, and a cylinder roller bearing configured as a support bearing and receiving axial back pressure forces.
    Type: Application
    Filed: November 14, 2006
    Publication date: November 20, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Jan Georgi, Rainer Moller
  • Publication number: 20080285905
    Abstract: A composite roll bearing (1), comprising an outer ring (2) and an annular inner ring (3) of groove shape in cross section having first, second, and third receiving surfaces (3a, 3b, 3c) facing the both end face inner peripheral portions (2a, 2b) and the circular inner peripheral surface (2c) of the outer ring (2) at specified intervals. A plurality of rollers (4) for thrust bearing are installed between one end face portion (2a) of the outer ring (2) and the first receiving surface (3a) of the inner ring (3) and between the other end face (2b) of the outer ring (2) and the second receiving surface (3b) of the inner ring (3). A plurality of rollers (5) for radial bearing are installed between the circular inner peripheral surface (2c) of the outer ring (2) and the third receiving surface (3c) of the inner ring (3). The rollers (5) are restricted to move in a thrust direction by retainer portions (8a, 8a) formed at the inner ends of retainers (6, 7) for the rollers (4) for thrust bearing.
    Type: Application
    Filed: March 30, 2004
    Publication date: November 20, 2008
    Inventors: Yoshihide Kiyosawa, Harushige Aoyagi, Hiroki Hanaoka
  • Publication number: 20080260318
    Abstract: A roller bearing (1) with a braking device, in particular, rotating connection, made from a bearing outer ring (2) and a bearing inner ring (3), between which there are provided roller bodies roll on associated raceways. For achieving a braking effect by a friction-fit connection, a movable brake element connected to one of the bearing rings (2, 3) is pressed against a counter surface of the other bearing ring (3, 2) and the force releasing the friction-fit connection can be applied by hydraulic medium. The friction-fit connection is generated according to the principles of the governing hydrostatic equation, wherein a brake lining (18) is surrounded by a hydraulic pressure medium (19) that is connected to a deflection space (21), which can be added on and in which a movable pressure piston (15) is arranged, wherein this piston can change the volume of this deflection space.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 23, 2008
    Applicant: Schaeffler KG
    Inventors: Jorg Schuh, Jurgen Stolzle
  • Publication number: 20070211981
    Abstract: An exemplary rotation module configured for a gantry apparatus includes a rotary plate, a base, and a bearing. The rotary plate has a through hole. The base is arranged in the through hole. The bearing is arranged between the rotary plate and the base. The bearing includes an inner race and an outer race rotatable relative to the inner race. The inner race is securely coupled to the base and the outer race is securely coupled to the rotary plate, whereby the rotary plate is rotatable relative to the base. A gantry apparatus are also provided.
    Type: Application
    Filed: October 13, 2006
    Publication date: September 13, 2007
    Applicant: ICF Technology Co., Ltd.
    Inventors: Chen-Hsing Cheng, Shing-I Hu
  • Patent number: 7104699
    Abstract: A first race component includes a flat, circular raceway portion, defined about an axis, and an axially extending lip portion. A plurality of needle rollers is arranged radially with respect to the axis for rolling contact with the flat raceway. A bearing cage retains the needle rollers and is engageable with the lip portion of the first component for piloting of the bearing cage. A second race component, made of different material, includes a flat portion in contact with the raceway portion of the first race component and a lip portion extending axially and radially from the flat portion and beyond the lip portion of the first race component such that the second race component is engageable by the bearing cage to hold the first race component, the second race component and the bearing cage together as an assembly.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: September 12, 2006
    Assignee: Timken US Corporation
    Inventors: Charles W. Shattuck, Robert D. Richtmeyer, Richard F. Murphy
  • Patent number: 7066655
    Abstract: An integral type thrust bearing is proposed which can be manufactured with fewer heat treatment steps. The retainer and the inner and outer rollers not hardened are assembled together with rollers into a bearing and thereafter the assembled bearing is carburized, hardened and tempered. This eliminates the need for individual heat treatment of the retainer and the inner and outer rings and decreases heat treatment steps for the production of thrust bearings.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: June 27, 2006
    Assignee: NTN Corporation
    Inventors: Norio Fujioka, Kazuyuki Yamamoto
  • Patent number: 6955467
    Abstract: A seismic isolation bearing assembly includes a frame unit including upper and lower frames and defining a plurality of upper and lower sub-frames, and a plurality of bearing units, each of which is mounted in a mounting cell defined by a respective one of the upper sub-frames and a respective one of the lower sub-frames, and each of which includes spaced apart upper and lower load plates and a bearing interposed between and in sliding contact with the upper and lower load plates. The upper load plate is secured to the respective one of the upper sub-frames. The lower load plate is secured to the respective one of the lower sub-frames.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: October 18, 2005
    Assignee: National Applied Research Laboratories
    Inventors: Kuo-Chun Chang, Jenn-Shin Hwang, George C. Lee, Sen-Nan Lee
  • Patent number: 6843605
    Abstract: There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 18, 2005
    Assignee: NTN Corporation
    Inventors: Kenji Tamada, Kikuo Maeda, Tomoaki Kawamura, Hirokazu Nakashima, Takumi Fujita, Mitsuo Sasabe