Self-aligning Patents (Class 384/558)
  • Patent number: 11137024
    Abstract: The invention relates to an angular contact roller bearing having an inner ring and an outer ring, between which two or more raceways for a plurality of rolling elements are formed, the rolling elements being designed to roll in their respective raceways in the circumferential direction of the angular contact roller bearing, and the raceways and the rolling elements having cross-sections corresponding to one another at least approximately. A cross-section of a rolling element containing the central longitudinal axis has an at least approximately rectangular design and an imaginary diagonal through the cross-section of the rolling element which for all rolling elements on a raceway of the angular contact roller bearing is arranged on an imaginary surface at least approximately in the form of a cylindrical casing.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: October 5, 2021
    Assignee: IMO HOLDING GMBH
    Inventors: Hubertus Frank, Erich Russ
  • Patent number: 10883544
    Abstract: A double-row self-aligning roller bearing has rollers interposed, in two rows aligned in a bearing width direction, between an inner ring and an outer ring. The outer ring has a spherical raceway surface. Each of the rollers has an outer circumferential surface having a cross-sectional shape that matches the raceway surface of the outer ring. Either or both of shapes and contact angles of the rollers are different from each other. An attachment hole to which a protrusion prevention jig is attachable is provided in an end surface of at least either one of the inner ring and the outer ring. The protrusion prevention jig prevents protrusion of the end surface of the inner ring in the bearing width direction with respect to the end surface of the outer ring.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: January 5, 2021
    Assignee: NTN CORPORATION
    Inventors: Kazumasa Seko, Takashi Yamamoto, Yasuyuki Inoue, Michio Hori
  • Patent number: 9097303
    Abstract: A roller guide device including a first guide member that is provided with an arcuate guide surface, a second guide member that is provided with an arcuate guide surface which is in opposition to the arcuate guide surface of the first guide member and which has a radius of curvature larger than that of the arcuate guide surface of the first guide member, and rollers that are interposed in a freely rollable manner between the arcuate guide surface of the first guide member, and the arcuate guide surface of the second guide member.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: August 4, 2015
    Assignee: Talk System Co., Ltd.
    Inventors: Shigeru Wako, Yoshikazu Komiya
  • Publication number: 20150139583
    Abstract: A bearing unit for a fluid machinery application having a double-row bearing, the double-row bearing comprising: a first angular self-aligning contact bearing arranged next to a second angular self-aligning contact bearing for locating and rotatably support a shaft; each angular self-aligning contact bearing having a respective set of rolling elements formed of rollers arranged in a row and interposed between an associated curved inner raceway and a curved outer raceway. Each roller is a symmetrical cylindrically shaped roller having a curved raceway-contacting surface engaging with the curved inner and outer raceways. Each roller is inclined in relation to the axial direction of the shaft by a respective first or second contact angle. The rollers are arranged to cooperate with the associated curved inner and raceways for supporting an axial force and a radial force. Examples of fluid machinery applications include: wind turbine, water turbine or propulsion turbine arrangements.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 21, 2015
    Applicant: Aktiebolaget SKF
    Inventors: Jonas KULLIN, Juergen REICHERT, Hans WENDEBERG
  • Publication number: 20150125104
    Abstract: A bearing arrangement for a fluid machinery application employing an axially locating bearing. The axially locating bearing includes: a first angular self-aligning contact bearing arranged next to a second angular self-aligning contact bearing. Each of the first angular self-aligning contact bearing and the second angular self-aligning contact bearing includes a set of rolling elements arranged in a row and interposed between a respective curved inner raceway and an associated curved outer raceway. Each roller is a symmetrical cylindrically-shaped roller having a curved raceway-contacting surface. Each roller is inclined respective to the axial direction of the shaft by a respective contact angle. The rollers support an axial force and a radial force. The axially non-locating bearing position is arranged spaced apart from the axially locating bearing position, as seen in the axial direction. Examples of fluid machinery applications include: a wind turbine, water turbine or a propulsion turbine.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 7, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Jonas KULLIN, Juergen REICHERT, Hans WENDEBERG
  • Patent number: 9011017
    Abstract: A radial rolling bearing (10) with rolling bodies (24) which are received in at least one cage (26, 28) and which are arranged between an inner ring (20) and an outer ring (22). The radial rolling bearing (12) is radially separable, and the radially multipart inner ring (20) can be fixed on a shaft (16) using two clamping rings (36, 38) which are attached to the axial ends of said inner ring. The inner ring (20) is designed without rims on the axially outer sides, and the clamping rings (36, 38) take on the function of inner ring rims, the rolling bodies (24) running against inner run-on surfaces (50) of the clamping rings (36, 38) in the axial direction. On the basis of the at least partial positioning of the clamping rings (36, 38) axially below the cages (26, 28) or the outer ring (22), the clamping rings (36, 38) take on two additional functions in addition to the actual clamping ring main function of fixing the inner ring (20) on the shaft (16).
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 21, 2015
    Assignee: Schaeffler Technologies, AG & Co. KG
    Inventor: Rainer Schroder
  • Patent number: 8967878
    Abstract: An in-transit mixing machine drive (2) having an output bearing (8) for supporting an output shaft for rotation relative to a drive housing, in which the output shaft is arranged inclined relative to a horizontal plane (5) at an angle (?) and the output bearing (8) is formed by a pendulum roller bearing (9) whose rolling bodies (13, 14) roll in two bearing rows (10, 11) at pressure angles (?, ?) about a bearing axis (12). The pressure angles (?, ?) of the two bearing rows (10, 11) differ from each other or the rolling bodies (13, 14) of the two bearing rows (10, 11) differ from each other.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: March 3, 2015
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Roland Lippert, Jurgen Sapper
  • Publication number: 20150043858
    Abstract: A bearing system for supporting components that are movable relative to one another includes at least one bearing and a preload mechanism for changing a preload of the at least one bearing based on an operating state of the bearing system, where the preload mechanism includes, for example, a piezoelectric element, a Peltier element, an expansion material or a micromechanical element.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 12, 2015
    Applicant: AKTIEBOLAGET SKF
    Inventors: Wolfgang Aust, Hubert Herbst, Joerg Wainus, Volker Wendt
  • Publication number: 20150030277
    Abstract: To facilitate adjusting a bearing arrangement, particularly in a wind turbine, for different operating situations, the bearing arrangement has an adjusting device with which the bearing preload can be adjusted starting from a base preload. This can allow, for example signs of wear to be compensated, manufacturing tolerances or design inaccuracies to be corrected and in particular current loading states to be addressed. This design avoids the otherwise usual overdimensioning of the bearing arrangement, thereby increasing the efficiency of the wind turbine as well as the service life of the bearing arrangement.
    Type: Application
    Filed: October 14, 2014
    Publication date: January 29, 2015
    Inventors: Mathias PICK, Wolfgang LOSERT
  • Patent number: 8920040
    Abstract: A rolling-element bearing includes an inner ring and an outer ring having at least two adjacently disposed raceways for at least two rows of rolling elements. In order to avoid or reduce corrosion on the raceways of the outer ring caused by condensation forming on the outer raceway, the outer ring has at least one radially-outwardly-extending groove in the axial region between its at least two raceways for collecting condensation at a location away from the raceways.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: December 30, 2014
    Assignee: Aktienbolaget SKF
    Inventors: Josef Brameshuber, Hubert Friedrich Koettritsch, Gerhard Strohmayr
  • Patent number: 8814436
    Abstract: The present invention relates to a spacer device for roller elements in a toroidal roller bearing, and a method for manufacturing a toroidal roller bearing comprising a plurality of spacer devices. The toroidal roller bearing allows for axial and angular displacement between an inner and outer bearing ring. The spacer device provides first and second roller-contacting surfaces having a concave shape adapted to conform with respective convex contacting surfaces of the toroidal roller elements, and at least one axial end portion which is elastically deformable.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: August 26, 2014
    Assignee: Aktiebolaget SKF
    Inventors: Hans Wendeberg, Jonas Kullin
  • Publication number: 20140169717
    Abstract: A radial rolling bearing (10) with rolling bodies (24) which are received in at least one cage (26, 28) and which are arranged between an inner ring (20) and an outer ring (22). The radial rolling bearing (12) is radially separable, and the radially multipart inner ring (20) can be fixed on a shaft (16) using two clamping rings (36, 38) which are attached to the axial ends of said inner ring. The inner ring (20) is designed without rims on the axially outer sides, and the clamping rings (36, 38) take on the function of inner ring rims, the rolling bodies (24) running against inner run-on surfaces (50) of the clamping rings (36, 38) in the axial direction. On the basis of the at least partial positioning of the clamping rings (36, 38) axially below the cages (26, 28) or the outer ring (22), the clamping rings (36, 38) take on two additional functions in addition to the actual clamping ring main function of fixing the inner ring (20) on the shaft (16).
    Type: Application
    Filed: April 12, 2012
    Publication date: June 19, 2014
    Applicant: Schaeffler technologies AG & Co. KG
    Inventor: Rainer Schroder
  • Patent number: 8740464
    Abstract: The bearing assembly concept includes a floating seal arrangement. In one form, a bearing assembly comprises a first bearing member and a second bearing member that is oriented adjacent to the first bearing member. A plurality of bearings is positioned between the first bearing member and the second bearing member. A shield is engaged with the first bearing member, and a floating seal is slidably engaged with the shield and the second bearing member. The shield captures the floating seal adjacent to the second bearing member.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: June 3, 2014
    Assignee: Rexnord Industries, LLC
    Inventor: Mark I. Berns
  • Patent number: 8727630
    Abstract: A self-aligning miniature ball bearing assembly is disclosed for being pressed into an opening formed in a substrate such as a sheet, a pillar block, a mounting flange, or a shaft. In one embodiment, the assembly is self-clinching when pressed into the opening and in an alternate embodiment the assembly is press-fittable into the opening and held with a friction fit. The miniature ball bearing of the assembly is mounted within a retainer and held against an angled bearing seat by a elastomeric compression ring. This allows the axis of the ball bearing to assume any orientation within a cone having a half angle of about 5 degrees with respect to an axis of the retainer. The ball bearing is thereby self-aligning upon receiving a shaft to be rotationally mounted in the assembly.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 20, 2014
    Assignee: Spyraflo, Inc.
    Inventor: Alan C. Guthrie
  • Patent number: 8714831
    Abstract: An outer ring, an inner ring and a roller serving as a bearing component that adopts as a source material a steel ensuring a large fracture toughness value and also having an alloy element added thereto in a reduced amount and also provides sufficient wear resistance, are configured of a steel containing 0.15-0.3% by mass of carbon, 0.15-0.7% by mass of silicon, and 0.15-1.0% by mass of manganese, with a remainder of iron and an impurity, and have a raceway/rolling contact surface included in a region having a carbon enriched layer and a nitrogen enriched layer. In the nitrogen enriched layer the raceway/rolling contact surface has a nitrogen concentration equal to or larger than 0.3% by mass.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: May 6, 2014
    Assignee: NTN Corporation
    Inventor: Nobuyuki Mori
  • Publication number: 20140050434
    Abstract: An in-transit mixing machine drive (2) having an output bearing (8) for supporting an output shaft for rotation relative to a drive housing, in which the output shaft is arranged inclined relative to a horizontal plane (5) at an angle (?) and the output bearing (8) is formed by a pendulum roller bearing (9) whose rolling bodies (13, 14) roll in two bearing rows (10, 11) at pressure angles (?, ?) about a bearing axis (12). The pressure angles (?, ?) of the two bearing rows (10, 11) differ from each other or the rolling bodies (13, 14) of the two bearing rows (10, 11) differ from each other.
    Type: Application
    Filed: August 14, 2013
    Publication date: February 20, 2014
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Roland Lippert, Jurgen Sapper
  • Patent number: 8646985
    Abstract: A sealed spherical roller bearing assembly, having an outer ring with a seal groove and an inner ring with a central bore. A plurality of rolling elements is arranged between the inner ring and the outer ring. A seal is provided that has a sealing element on an outer diameter of the seal, which sealing element engages in the seal groove in the outer ring.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: February 11, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Rocco Docimo
  • Patent number: 8641291
    Abstract: A comb-shaped resin retainer includes an annular section and a plurality of pillar sections which protrude to one side in the axial direction from one side of the annular section. A gap between the pillar sections, adjacent to each other in the circumferential direction serves as a pocket for retaining a cylindrical roller. A side face of the pillar section which serves as the inner face of the pocket is formed in a recessed shape. Each pillar section is tilted so as to become closer to the retainer axial center as the pillar section extends toward the tip of the pillar section. A flat portion is provided on the side face of the pillar section which serves as the inner face of the pocket. The flat portion continues axially from the tip portion of the pillar section to the base end portion thereof.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: February 4, 2014
    Assignee: NTN Corporation
    Inventor: Naota Yamamoto
  • Patent number: 8608399
    Abstract: A connection arrangement for connecting a sickle drive with a sickle (1) has a connection element (4) on the sickle (1). The connection element (4) has an open ring with a through bore (6) that extends along a longitudinal axis (5). A cup-shaped intermediate element (14) rests in the through bore (6) of the connection element (4). The cup-shaped intermediate element (14) has a spherical inner face (18). A rotational bearing (32) with a spherical outer face (21) is adapted to be accommodated in the spherical inner face (18) in the intermediate element (14).
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: December 17, 2013
    Assignee: Eichelhardter Werkzeug-und Maschinenbau GmbH
    Inventor: Heinrich Günter Schumacher
  • Patent number: 8398310
    Abstract: A self aligning bearing and seal assembly including a bearing housing operable to mount to a surface, a bearing unit seated within the bearing housing and having an outer race, an inner race, and at least one ball intermediate the outer and inner race. The self aligning bearing and seal assembly also includes a pivot assembly having a shaft sleeve operable for receiving and maintaining a rotatable shaft and being disposed in the bearing housing and in operational contact with the inner race of the bearing unit. The pivot assembly allows for a degree of angular misalignment between the surface and the shaft greater than three degrees.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: March 19, 2013
    Assignee: Total Lubrication Management Company
    Inventors: Charles Wayne Ehlert, Patrick Wilson Duncan
  • Patent number: 8393796
    Abstract: In an amphibious ATV, the wheel bearings are housed in a spherical mounting-structure, because of possible angular misalignment. The spherical mounting-structure comprises separable primary and secondary elements. The new system provides that both elements are axially wide, being e.g as wide as the outer-race of the bearing. Now, the elements are highly resistant to every distortion, which means the mounting-structure can seal the bearings very effectively—both as to keeping dirt and water out, and keeping lubricant in.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: March 12, 2013
    Assignee: Ontario Drive & Gear Limited
    Inventor: Brian Mark Cressman
  • Patent number: 8333515
    Abstract: A bearing assembly includes an inner race adapted to be coupled to an inner member and an outer race adapted to be coupled to an outer member positioned such that the inner race is in an opposed and spaced apart relation from the outer race. Roller elements are disposed between the inner and outer races. An inner flange is coupled to the outer race, includes circumferentially spaced apart recesses and extends generally radially toward the inner race. An outer flange is coupled to the inner race. A flexible sealing member contacts both the inner flange and the outer flange. A shroud includes tabs that extend through the recesses. The tabs are coupled to the outer race. The inner and outer members are permitted to rotate relative to each other.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: December 18, 2012
    Assignee: Emerson Power Transmission Corporation
    Inventors: Collin B. Milliken, John P. Cook
  • Patent number: 8267592
    Abstract: A compact bearing support operable for supporting and damping movement of a bearing assembly. The bearing support includes a plurality of flexible elements engaging the bearing assembly in a plurality of locations.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 18, 2012
    Assignee: Rolls-Royce North American Technologies, Inc.
    Inventor: Todd A. Godleski
  • Patent number: 8262549
    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: Grant
    Filed: September 19, 2008
    Date of Patent: September 11, 2012
    Assignee: JTekt Corporation
    Inventor: Takeharu Uranishi
  • Publication number: 20120128279
    Abstract: A method for assembling a set of bearing assemblies 100 onto a mill roll 10 and for establishing a required bearing setting. The mill roll 10 is configured to receive a set of bearing assemblies 100 at each axial end, with the bearing rolling elements 100A contained within supporting chocks 102 adapted for placement within a mill housing. The chock assembly 102R and bearing assembly 100 at a first end of the roll are positioned first, and coupled to the first end an axial center rod 22 passing through an axial bore 24 of the roll 12. The chock assembly 102L and bearing assembly 100 at the second end of the roll 12 is then positioned onto the opposite end of the roll 12, and a connecting sub-assembly 300, 400, 504A is secured to the second end of the axial center rod 22. The connecting sub-assembly engages the second chock assembly 102L and bearing assembly 100, and is adjusted to achieve a desired bearing setting for both bearing assemblies 100 through the center rod 22.
    Type: Application
    Filed: July 29, 2010
    Publication date: May 24, 2012
    Applicant: THE TIMKEN COMPANY
    Inventors: Mark E. Baker, Nigel A. Los, Thomas L. Baker
  • Patent number: 8157451
    Abstract: A bearing arrangement of a roller-mounted unbalanced mass shaft. The rollers are in punctiform contact with one of the raceways at a low shaft rotational speed, and in linear contact with both raceways at a high shaft rotational speed.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: April 17, 2012
    Assignee: Schaeffler KG
    Inventors: Peter Solfrank, Matthias Fick, Alexander Tasche
  • Publication number: 20120020605
    Abstract: An outer ring, an inner ring and a roller serving as a bearing component that adopts as a source material a steel ensuring a large fracture toughness value and also having an alloy element added thereto in a reduced amount and also provides sufficient wear resistance, are configured of a steel containing 0.15-0.3% by mass of carbon, 0.15-0.7% by mass of silicon, and 0.15-1.0% by mass of manganese, with a remainder of iron and an impurity, and have a raceway/rolling contact surface included in a region having a carbon enriched layer and a nitrogen enriched layer. In the nitrogen enriched layer the raceway/rolling contact surface has a nitrogen concentration equal to or larger than 0.3% by mass.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 26, 2012
    Inventor: Nobuyuki Mori
  • Patent number: 8075196
    Abstract: A spherical outer diameter tapered roller bearing pillow block system (100) for supporting the rotating main shaft of a wind turbine. The bearing system is configured with a unitized construction and factory set preload bearing settings to facilitate installation and setup. A spherical outer diameter surface (114) is formed on the outer race (116) of a tapered roller bearing assembly disposed about the rotating main shaft of the wind turbine. The bearing assembly is secured to a stationary support structure of the wind turbine through a pillow block housing assembly (102) providing a matching spherical housing seat (112) to form a ball and socket interface between the tapered roller bearing assembly (118) and the pillow block housing assembly (102). The ball and socket interface accommodates static and dynamic misalignments between the wind turbine main shaft and the supporting structure, while the bearing assembly (118) accommodates radial and axial loads.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: December 13, 2011
    Assignee: The Timken Company
    Inventors: Bruce C. Burner, Gerald Fox
  • Patent number: 8061903
    Abstract: A bearing assembly is disclosed including an inner race and an outer race that is radially spaced from the inner race for receiving roller elements therebetween. A collar is adjacent to and fixed relative to the inner race. A sealing member is fixed relative to the outer race. The sealing member slidably and sealingly engages the collar axially and radially to maintain a seal between the sealing member and the collar during a misalignment of the inner race relative to the outer race and a predetermined degree of misalignment of the inner race relative to the outer race.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: November 22, 2011
    Assignee: Rexnord Industries, LLC
    Inventor: Nicholas Michael Kolar
  • Patent number: 8007184
    Abstract: There is realized a self-aligning roller bearing with retainer that stabilizes the orientation of spherical rollers and prevents these spherical rollers from skewing, and which can be rotated at high speed, and furthermore which enables efficient lubricant feed into pockets 9. By rotating a turning tool 14 as it revolves, the surfaces on both sides in the circumferential direction of respective column sections are processed into concave curved surfaces that oppose a rolling surface of the respective spherical rollers across a pocket clearance into which lubricant oil can be fed. The length of the column sections 8c is less than the length in the axial direction of the spherical rollers, and greater than a half of the length, and an end portion of the side surface in the circumferential direction of the respective column sections 8c projects further in the circumferential direction than an intermediate portion thereof, and the spherical rollers are embraced in the pockets 9.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: August 30, 2011
    Assignee: NSK Ltd.
    Inventors: Takashi Murai, Toshiyuki Tanaka, Masatake Ichimaru
  • Publication number: 20110116734
    Abstract: It is desired to form a flange and roller guide surfaces on each retainer of a self-aligning roller bearing easily and with high precision. Each punched retainer include a large-diameter annular portion (1), a small-diameter annular portion (2), a plurality of bridges (3) extending between the annular portions (1) and (2) and defining a plurality of circumferentially separated pockets (4) therebetween, roller guide surfaces (1a) that can be brought into sliding contact with end surfaces of respective convex rollers (5), which revolve around the axis of the bearing, and a flange (6) formed by radially bending the large-diameter annular portion (1). The roller guide surfaces (1a) comprise punched sections formed on the portions of the inner peripheries of the pockets (4) located at the large-diameter annular portion (1), and the flange (6) has a Bent Portion® that extends the entire circumference of the large-diameter annular portion (1).
    Type: Application
    Filed: July 14, 2009
    Publication date: May 19, 2011
    Inventors: Takehiko Umemoto, Yukihisa Tsumori, Takeshi Maeda, Yasuhiro Shimizu
  • Patent number: 7922396
    Abstract: A double row self-aligning roller bearing in which spherical rollers are arranged in double rows between an inner ring and an outer ring, characterized in that the curvature radius of the ridge line of the spherical roller in one row is R1, the curvature radius of the ridge line of the spherical roller positioned in the other row is R2, the curvature radius of the inner ring track surface being in contact with the spherical roller in one row is N1, and the curvature radius of the inner ring track surface being in contact with the spherical roller in the other row is N2, a relation such that N1/R1>N2/R2 is satisfied.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: April 12, 2011
    Assignee: NTN Corporation
    Inventor: Nobuyuki Mori
  • 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: 20110005140
    Abstract: An articulating roller arm assembly comprising a single integral piece cantilever beam with a span section and a throw section, with the span section oriented substantially transverse the throw section. A first distal end of the throw section and a distal end of the span section form a bend of the single integral piece cantilever beam. The articulating roller arm assembly further including a first wheel that is coupled with a first distal end of the throw section, and a second wheel that is coupled with a second distal end of the throw section.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 13, 2011
    Inventors: Michael John Guidos, Christopher Marshal KEE, Michael Henry CLARK
  • Publication number: 20090190874
    Abstract: A spherical outer diameter tapered roller bearing pillow block system (100) for supporting the rotating main shaft of a wind turbine. The bearing system is configured with a unitized construction and factory set preload bearing settings to facilitate installation and setup. A spherical outer diameter surface (114) is formed on the Outer race (116) of a tapered roller bearing assembly disposed about the rotating main shaft of the wind turbine. The bearing assembly is secured to a stationary support structure of the wind turbine through a pillow block housing assembly (102) providing a matching spherical housing scat (112) to form a ball and socket interface between the tapered roller bearing assembly (118) and the pillow block housing assembly (102). The ball and socket interface accommodates static and dynamic misalignments between the wind turbine main shaft and the supporting structure, while the bearing assembly (118) accommodates radial and axial loads.
    Type: Application
    Filed: March 9, 2006
    Publication date: July 30, 2009
    Applicant: THE TIMKEN COMPANY
    Inventors: Bruce C. Burner, Gerald Fox
  • Patent number: 7534160
    Abstract: A precision machine tool, comprising a table which is suspended so that it is substantially a swivelable table; a driving element for driving a tood during machining of a part; and a device for orienting said table, said orienting device including at least three orienting elements, each including a plurality of rolling bodies which are brought successively into a contact with a surface of said table on which work pieces to be machined are located.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: May 19, 2009
    Inventors: Alex Cooper, Yevgeny Bederak, Alexander Bederak
  • Publication number: 20090001245
    Abstract: A rolling bearing fixing device includes at least one bearing having mutually rotatable inner and outer rings, a housing having at least one fitting hole into which the bearing is fitted and a bolt insertion hole, a pair of fixing plates having at least one large-diameter hole and a bolt insertion hole; and a bolt inserted from one axial end into the bolt insertion hole of one fixing plate, the bolt insertion hole of the housing, and the bolt insertion hole of the other fixing plate, and connects the housing with the pair of fixing plates. Both axial end parts of the outer ring are held by the pair of fixing plates in the axial direction, the inner ring is positioned further inwardly of the large-diameter hole of the fixing plates in the radial direction and the inner ring is rotatable with respect to the fixing plates.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 1, 2009
    Applicant: NSK Ltd.
    Inventors: Takao KATOUGI, Katsuhiro IKEZAWA, Seigou URAKAMI, Daisuke HIMEDA, Tomoharu SUGIMAN
  • Publication number: 20080304781
    Abstract: The invention relates to a radial rolling bearing, especially a single-row deep groove rolling bearing, which substantially consists of an outer bearing ring and of an inner bearing ring as well as of a multitude of rollers, arranged between the bearing rings and held at uniform distances from one another in the peripheral direction by a bearing cage which is assembled from two ring halves. The rollers of the radial rolling bearing are configured in the form of spherical disks that each have two parallel lateral surfaces which are symmetrically flattened from a basic spherical shape and which roll off in two groove-type raceways with their faces. Said raceways are incorporated into the inner face of the outer bearing ring and into the outer face of the inner bearing ring. The bearing cage according to the invention is characterized by having individual cage pockets for each roller, said pockets encircling the roller on a reference line.
    Type: Application
    Filed: December 5, 2006
    Publication date: December 11, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doppling, Andreas Bohr, Rainer Eidloth
  • Publication number: 20080260313
    Abstract: There is realized a self-aligning roller bearing with retainer that stabilizes the orientation of spherical rollers and prevents these spherical rollers from skewing, and which can be rotated at high speed, and furthermore which enables efficient lubricant feed into pockets 9. By rotating a turning tool 14 as it revolves, the surfaces on both sides in the circumferential direction of respective column sections are processed into concave curved surfaces that oppose a rolling surface of the respective spherical rollers across a pocket clearance into which lubricant oil can be fed. The length of the column sections 8c is less than the length in the axial direction of the spherical rollers, and greater than a half of the length, and an end portion of the side surface in the circumferential direction of the respective column sections 8c projects further in the circumferential direction than an intermediate portion thereof, and the spherical rollers are embraced in the pockets 9.
    Type: Application
    Filed: November 22, 2005
    Publication date: October 23, 2008
    Applicant: NSK Ltd.
    Inventors: Takashi Murai, Toshiyuki Tanaka, Masatake Ichimaru
  • Patent number: 7435007
    Abstract: A roughness of an outer ring raceway surface 14 formed on an inner peripheral surface of an outer ring 13 is made larger than a roughness of inner ring raceway surfaces 12a, 12b of an inner ring 11. Also, an average roughness Ra of the outer ring raceway surface 14 is set within 0.1 ?m?Ra?0.5 ?m in an axial direction and a circumferential direction in ranges of b1/(B/2)?0.9, b2/ (B/2)?0.9 and in a measured length of 0.1 mm to 1.0 mm where B is a width of the outer ring 13 and b1, b2 are a distance from both end surfaces of the outer ring 13 in the axial direction respectively. A roughness parameter S of the outer ring raceway surface is set within 0<S?20 ?m.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: October 14, 2008
    Assignee: NSK Ltd.
    Inventors: Kouji Ueda, Tohru Ueda
  • Patent number: 7427163
    Abstract: The invention relates to a self-aligning antifriction bearing (1) comprising at least one first row (9) of rolling bodies (11) and a second row (10) of rolling bodies (11) adjacent to said first row (9) of rolling bodies (11), whereby every row (9, 10) comprises balls (5) and rollers (6) disposed peripherally about a central axis of the self-aligning antifriction bearing (1). The bearing is characterized in that the balls (5) have a greater outer diameter (28) than the rollers (6).
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: September 23, 2008
    Assignee: Schaeffler KG
    Inventors: Rainer Schöder, Martin Grehn
  • Patent number: 7338213
    Abstract: A barrel-shaped bearing which comprises an external ring and an internal ring, at least one row of barrel-shaped rolling bodies arranged therebetween, the cage in the form of a disk which turns together with the rolling bodies, engages inside a peripheral groove around each rolling body and is provided with recesses corresponding to the number of the rolling bodies of the one row arranged on the external periphery of the cage. The total rolling surface of the internal ring is embodied such that the cross section thereof is concave along the entire axial length of the rolling body. The smallest distance between both sides of the cavity of the disk-shaped cage in the area of the external periphery thereof is less than the diameter of a rolling body in the area of the peripheral groove thereof.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: March 4, 2008
    Assignee: FAG Kugelfischer AG
    Inventors: Rainer Schröder, Martin Grehn
  • Publication number: 20080037921
    Abstract: It is intended to easily insert rollers into a cage at an approximately optimum insertion angle and in a stabilized attitude, thereby preventing poor insertion of rollers and roller disengagement.
    Type: Application
    Filed: April 25, 2005
    Publication date: February 14, 2008
    Applicant: NSK Ltd.
    Inventor: Tadahiro Hoshino
  • Patent number: 7093981
    Abstract: In a self-aligning bearing positioning and supporting one end of a rotation shaft in an axial direction and allowing the rotation shaft to bend, the bearing is structured as a double row cylindrical roller bearing with aligning ring, a first row of cylindrical roller group is positioned by being held in an axial direction between a radially inward flange provided in an intermediate portion in an axial direction of an outer ring having an outer peripheral surface formed in a spherical surface shape, and a flange provided in one outer end of two inner rings, and a second row of cylindrical roller group is positioned by being held in the axial direction between the flange of the outer ring and a flange provided in another outer ends of the two inner rings.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: August 22, 2006
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Takashi Masui, Youichi Numada, Toshikazu Kawakami, Keiichi Miyoshi
  • Patent number: 6926446
    Abstract: Radial self-aligning rolling bearing including an outer ring, an inner ring, and balls which are arranged to roll in the raceways of the rings, and also spherical rollers together as rolling elements, which are all guided in a cage. The balls are larger in diameter than the spherical rollers, so that the balls exclusively take up the entire bearing load when the bearing load is small and both the balls and the rollers take up a larger bearing load.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: August 9, 2005
    Assignee: FAG Kugelfischer AG & Co. KG
    Inventors: Martin Grehn, Rainer Schroder
  • Patent number: 6857784
    Abstract: A system and method is provided for setting the roller clearance of a multi-row tapered roller bearing assembly via a clearance adjustment assembly and an outer retaining sleeve. The bearing assembly has multiple rows of tapered rollers disposed circumferentially between an inner sleeve and the clearance adjustment assembly, which is secured by the outer retaining sleeve. The clearance adjustment assembly has at least one clearance adjustment ring disposed adjacent multiple tapered support rings, which extend circumferentially about the multiple rows of tapered rollers. In the bearing assembly, the at least one clearance adjustment ring forces the multiple tapered support rings against the multiple rows of tapered rollers to set the desired roller clearance.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: February 22, 2005
    Assignee: Reliance Electric Technologies, LLC.
    Inventors: Ryan N. DeWachter, Donald L. Nisley
  • Patent number: 6776552
    Abstract: A ball joint which uses spherical rollers to reduce the torque friction which tends to inhibit the rotation of the ball within a ball joint assembly. Two sets of spherical rollers are captivated between the ball and two liner rings in the ball joint housing. The ball has two annular raceways which act as the inner raceways for the spherical rollers. Two liner rings have internal diameters which match the configuration of the spherical rollers and which act as outer raceways for the spherical rollers. The two liner rings have external threads and are installed into the housing which has matching internal threads.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: August 17, 2004
    Assignee: The Timken Company
    Inventor: Hiroshi Marunaka
  • Patent number: 6668533
    Abstract: A reel mower includes a bearing system having a spring that biases a plurality of ball bearings toward a cone. The cone is fixedly mounted on the reel shaft. The cone can be conically constructed, and used in combination with a washer that is fixedly attached to the reel shaft.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: December 30, 2003
    Assignee: American Lawn Mower Co.
    Inventors: Richard W. Beckman, Robert E. Kersey
  • Publication number: 20030108636
    Abstract: A clamping apparatus includes upper and lower platens; one or more tiebars for connecting the platens; an intermediate platen provided between the upper and lower platens for movement relative to and along the tiebars. Upper and lower mold halves are provided on the upper and intermediate platens, respectively. A linkage is provided for connecting the lower and intermediate platens. The linkage includes upper and lower links connected with each other for rotation on an intermediate shaft. The upper and lower links are pivotably supported on first and second shafts fixed on the intermediate and lower platens, respectively. The intermediate shaft is operatively connected with the drive mechanism so that the mechanism transmits a driving force to the linkage, so that the lower platen is moved relative to the intermediate platen. A set of radial needle bearing and thrust bearing is used for at least one of the intermediate, first and second shafts.
    Type: Application
    Filed: October 4, 2002
    Publication date: June 12, 2003
    Applicants: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Engineering Company Limited
    Inventors: Hiroyoshi Harada, Itaru Matsuo, Takehiko Ikegami, Hiromichi Yamada, Junji Sakakibara, Hiroaki Tanoue
  • Patent number: 6491497
    Abstract: A rotor assembly for a gas turbine engine includes a bearing assembly that reduces dynamic loads to a support frame and static bending to the rotor assembly during periods of rotor unbalance. The rotor assembly includes a rotor shaft coupled to a fan and supported longitudinally with a plurality of bearing assemblies on a support frame. A number two bearing assembly includes a paired race, a rolling element, and a mounting race. The mounting race includes a spherical face and is secured to the bearing assembly with a retainer that plastically fails at a pre-determined moment load.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: December 10, 2002
    Assignee: General Electric Company
    Inventors: Barry Lynn Allmon, Christopher Charles Glynn, Kenneth Lee Fisher, Daniel Edward Mollmann, Bala Corattiyil, Randy Marinus Vondrell, Morris Green Penn, Michael Joseph Gambone, Jan Christopher Schilling