US20070286538A1 - Dynamic Bearing Device - Google Patents

Dynamic Bearing Device Download PDF

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Publication number
US20070286538A1
US20070286538A1 US11/547,641 US54764105A US2007286538A1 US 20070286538 A1 US20070286538 A1 US 20070286538A1 US 54764105 A US54764105 A US 54764105A US 2007286538 A1 US2007286538 A1 US 2007286538A1
Authority
US
United States
Prior art keywords
bearing
seal member
dynamic
housing
shaft member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/547,641
Other languages
English (en)
Inventor
Toshiyuki Mizutani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Original Assignee
NTN Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2004115704A external-priority patent/JP2005299777A/ja
Priority claimed from JP2005017068A external-priority patent/JP2005321089A/ja
Application filed by NTN Corp filed Critical NTN Corp
Assigned to NTN CORPORATION reassignment NTN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MIZUTANI, TOSHIYUKI
Publication of US20070286538A1 publication Critical patent/US20070286538A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/107—Grooves for generating pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure
    • F16C17/107—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure with at least one surface for radial load and at least one surface for axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1075—Wedges, e.g. ramps or lobes, for generating pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F16C33/741—Sealings of sliding-contact bearings by means of a fluid
    • F16C33/743—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap
    • F16C33/745—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap by capillary action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/028—Sliding-contact bearings for exclusively rotary movement for radial load only with fixed wedges to generate hydrodynamic pressure, e.g. multi-lobe bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49639—Fluid bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49679—Anti-friction bearing or component thereof
    • Y10T29/4968—Assembling of race, cage, and rolling anti-friction members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/497—Pre-usage process, e.g., preloading, aligning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49703—Sealing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
US11/547,641 2004-04-09 2005-04-07 Dynamic Bearing Device Abandoned US20070286538A1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2004-115704 2004-04-09
JP2004115695 2004-04-09
JP2004115704A JP2005299777A (ja) 2004-04-09 2004-04-09 動圧軸受装置
JP2004-115695 2004-04-09
JP2005-017068 2005-01-25
JP2005017068A JP2005321089A (ja) 2004-04-09 2005-01-25 動圧軸受装置
PCT/JP2005/006847 WO2005098252A1 (fr) 2004-04-09 2005-04-07 Dispositif de palier à pression dynamique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/006847 A-371-Of-International WO2005098252A1 (fr) 2004-04-09 2005-04-07 Dispositif de palier à pression dynamique

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/373,883 Division US8782901B2 (en) 2004-04-09 2011-12-05 Dynamic bearing device

Publications (1)

Publication Number Publication Date
US20070286538A1 true US20070286538A1 (en) 2007-12-13

Family

ID=35125150

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/547,641 Abandoned US20070286538A1 (en) 2004-04-09 2005-04-07 Dynamic Bearing Device
US13/373,883 Expired - Fee Related US8782901B2 (en) 2004-04-09 2011-12-05 Dynamic bearing device

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/373,883 Expired - Fee Related US8782901B2 (en) 2004-04-09 2011-12-05 Dynamic bearing device

Country Status (3)

Country Link
US (2) US20070286538A1 (fr)
KR (1) KR101213552B1 (fr)
WO (1) WO2005098252A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090129709A1 (en) * 2007-11-08 2009-05-21 Yoshihito Watanabe Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same
US20090190869A1 (en) * 2006-10-27 2009-07-30 Nidec Corporation Fluid dynamic bearing device
US20090285514A1 (en) * 2006-03-24 2009-11-19 Ntn Corporation Fluid dynamic bearing device
US20100166344A1 (en) * 2006-06-07 2010-07-01 Ntn Corporation Fluid dynamic bearing device and method of manufacturing the same
US20100166345A1 (en) * 2007-05-07 2010-07-01 Ntn Corporation Fluid dynamic bearing device
US20100266231A1 (en) * 2007-12-18 2010-10-21 Kenta Sakaguchi Rolling bearing for alternator
US20110170813A1 (en) * 2008-09-09 2011-07-14 Ntn Corporation Fluid dynamic bearing device and manufacturing method therefor
US20130149140A1 (en) * 2011-12-07 2013-06-13 Asia Vital Components Co., Ltd. Bearing structure and cooling fan using same
US20130251292A1 (en) * 2012-03-23 2013-09-26 Foxconn Technology Co., Ltd. Bearing device, method of manufacturing bearing device and bearing assembly having the bearing device
US9284985B2 (en) * 2014-05-12 2016-03-15 Delta Electronics, Inc. Oil seal bearing and fan using same
US9303653B2 (en) 2011-06-30 2016-04-05 Nidec Corporation Dynamic pressure bearing apparatus and fan
CN107956802A (zh) * 2017-12-22 2018-04-24 天津辅然分离机械有限公司 卧螺离心机螺旋主轴的滑动轴承密封结构
EP3299648A4 (fr) * 2015-05-19 2018-11-21 Lifeng Luo Palier radial à gaz sous pression dynamique de type à rainure
TWI768423B (zh) * 2020-08-05 2022-06-21 建準電機工業股份有限公司 軸承系統及具有該軸承系統的馬達
US11415178B2 (en) * 2020-09-02 2022-08-16 Aktiebolaget Skf Method for assembling a tapered roller bearing, and assembly unit for this purpose

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101362452B1 (ko) * 2008-02-11 2014-02-13 엘지이노텍 주식회사 스핀들 모터
KR101490679B1 (ko) * 2008-02-12 2015-02-11 엘지이노텍 주식회사 스핀들 모터
JP6502068B2 (ja) * 2014-11-20 2019-04-17 Ntn株式会社 流体動圧軸受装置の製造方法
JP6709722B2 (ja) * 2016-11-24 2020-06-17 株式会社ダイヤメット 焼結軸受
JP7246867B2 (ja) * 2018-05-23 2023-03-28 株式会社ダイヤメット 焼結軸受

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5097164A (en) * 1988-12-29 1992-03-17 Canon Kabushiki Kaisha Hermetically sealed type dynamic pressure fluid bearing motor
US5372432A (en) * 1993-07-16 1994-12-13 Nippon Ferrofluidics Corporation Dynamic pressure bearing assembly
US5558445A (en) * 1994-07-22 1996-09-24 Quantum Corporation Self-contained hydrodynamic bearing unit and seals
US6243230B1 (en) * 1998-03-31 2001-06-05 Hitachi, Ltd. Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit
US6250807B1 (en) * 1998-09-10 2001-06-26 Ntn Corporation Hydrodynamic type bearing and hydrodynamic type bearing unit
US6322252B1 (en) * 1998-05-19 2001-11-27 Seagate Technology Llc Discrete fluid dynamic bearings
US20040013329A1 (en) * 2002-04-05 2004-01-22 Nobuyoshi Yamashita Hydrodynamic bearing device
US20050094906A1 (en) * 2003-09-22 2005-05-05 Relial Corporation Dynamic pressure thrust bearing part and method of manufacturing dynamic pressure thrust bearing part
US6921208B2 (en) * 2002-02-20 2005-07-26 Ntn Corporation Dynamic bearing device and method for making same
US6939046B2 (en) * 2002-07-15 2005-09-06 Minebea Co., Ltd. Hydrodynamic bearing, spindle motor and hard disk drive
US6966699B2 (en) * 2002-09-18 2005-11-22 Relial Corporation Dynamic pressure bearing device, and manufacturing method and assembly jig thereof

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JP2000087953A (ja) * 1998-09-10 2000-03-28 Ntn Corp 動圧型焼結含油軸受ユニット
US6390681B1 (en) * 1999-04-05 2002-05-21 Ntn Corporation Dynamic pressure bearing-unit
JP2001041253A (ja) * 1999-07-26 2001-02-13 Victor Co Of Japan Ltd スピンドルモータ
JP2001271828A (ja) * 2000-03-28 2001-10-05 Ntn Corp 動圧型焼結含油軸受ユニット
JP2002339956A (ja) * 2001-05-17 2002-11-27 Riraiaru:Kk 動圧軸受装置およびその製造方法
JP4177975B2 (ja) 2001-08-14 2008-11-05 日本電産株式会社 動圧軸受装置
JP2003065324A (ja) 2001-08-27 2003-03-05 Ntn Corp 動圧型軸受装置
JP2003148498A (ja) * 2001-11-14 2003-05-21 Ntn Corp 動圧型軸受ユニット
JP2003166524A (ja) * 2001-11-30 2003-06-13 Sankyo Seiki Mfg Co Ltd 動圧軸受装置
JP3943381B2 (ja) * 2001-12-05 2007-07-11 日本電産株式会社 軸受装置及びこれを備えたモータ
JP3981564B2 (ja) * 2002-02-20 2007-09-26 Ｎｔｎ株式会社 動圧軸受装置及びその製造方法
JP2002369446A (ja) * 2002-03-20 2002-12-20 Hitachi Ltd ディスク駆動装置
JP2003305616A (ja) 2002-04-15 2003-10-28 Nippon Densan Corp 動圧軸受における動圧溝の電解加工方法及び電解加工装置
JP3686630B2 (ja) 2002-05-21 2005-08-24 Ｎｔｎ株式会社 動圧軸受装置
EP1365164A3 (fr) * 2002-05-22 2004-11-24 Relial Corporation Dispositif de palier à pression dynamique, procédé de fabrication et dispositif d'assemblage
JP3094210U (ja) * 2002-11-21 2003-06-13 建準電機工業股▲分▼有限公司 ボールベアリングの位置決め構造

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5097164A (en) * 1988-12-29 1992-03-17 Canon Kabushiki Kaisha Hermetically sealed type dynamic pressure fluid bearing motor
US5372432A (en) * 1993-07-16 1994-12-13 Nippon Ferrofluidics Corporation Dynamic pressure bearing assembly
US5558445A (en) * 1994-07-22 1996-09-24 Quantum Corporation Self-contained hydrodynamic bearing unit and seals
US6243230B1 (en) * 1998-03-31 2001-06-05 Hitachi, Ltd. Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit
US20020018315A1 (en) * 1998-03-31 2002-02-14 Katsutoshi Nii Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit
US20010021080A1 (en) * 1998-03-31 2001-09-13 Katsutoshi Nii Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit
US6322252B1 (en) * 1998-05-19 2001-11-27 Seagate Technology Llc Discrete fluid dynamic bearings
US6250807B1 (en) * 1998-09-10 2001-06-26 Ntn Corporation Hydrodynamic type bearing and hydrodynamic type bearing unit
US6921208B2 (en) * 2002-02-20 2005-07-26 Ntn Corporation Dynamic bearing device and method for making same
US20040013329A1 (en) * 2002-04-05 2004-01-22 Nobuyoshi Yamashita Hydrodynamic bearing device
US6939046B2 (en) * 2002-07-15 2005-09-06 Minebea Co., Ltd. Hydrodynamic bearing, spindle motor and hard disk drive
US6966699B2 (en) * 2002-09-18 2005-11-22 Relial Corporation Dynamic pressure bearing device, and manufacturing method and assembly jig thereof
US20050094906A1 (en) * 2003-09-22 2005-05-05 Relial Corporation Dynamic pressure thrust bearing part and method of manufacturing dynamic pressure thrust bearing part

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8562219B2 (en) * 2006-03-24 2013-10-22 Ntn Corporation Fluid dynamic bearing device
US8215843B2 (en) * 2006-03-24 2012-07-10 Ntn Corporation Fluid dynamic bearing device
US20090285514A1 (en) * 2006-03-24 2009-11-19 Ntn Corporation Fluid dynamic bearing device
US20100166344A1 (en) * 2006-06-07 2010-07-01 Ntn Corporation Fluid dynamic bearing device and method of manufacturing the same
US8529132B2 (en) * 2006-06-07 2013-09-10 Ntn Corporation Fluid dynamic bearing device and method of manufacturing the same
US8016488B2 (en) 2006-10-27 2011-09-13 Ntn Corporation Fluid dynamic bearing device
US20090190869A1 (en) * 2006-10-27 2009-07-30 Nidec Corporation Fluid dynamic bearing device
US20100166345A1 (en) * 2007-05-07 2010-07-01 Ntn Corporation Fluid dynamic bearing device
US8277126B2 (en) 2007-05-07 2012-10-02 Ntn Corporation Fluid dynamic bearing device
US20090129709A1 (en) * 2007-11-08 2009-05-21 Yoshihito Watanabe Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same
US8007175B2 (en) * 2007-11-08 2011-08-30 Panasonic Corporation Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same
US20100266231A1 (en) * 2007-12-18 2010-10-21 Kenta Sakaguchi Rolling bearing for alternator
US9234154B2 (en) * 2007-12-18 2016-01-12 Ntn Corporation Rolling bearing for alternator
US20110170813A1 (en) * 2008-09-09 2011-07-14 Ntn Corporation Fluid dynamic bearing device and manufacturing method therefor
US8672548B2 (en) * 2008-09-09 2014-03-18 Ntn Corporation Fluid dynamic bearing device and manufacturing method therefor
US9303653B2 (en) 2011-06-30 2016-04-05 Nidec Corporation Dynamic pressure bearing apparatus and fan
US9822787B2 (en) 2011-06-30 2017-11-21 Nidec Corporation Dynamic pressure bearing apparatus and fan
US20130149140A1 (en) * 2011-12-07 2013-06-13 Asia Vital Components Co., Ltd. Bearing structure and cooling fan using same
US20130251292A1 (en) * 2012-03-23 2013-09-26 Foxconn Technology Co., Ltd. Bearing device, method of manufacturing bearing device and bearing assembly having the bearing device
US8979377B2 (en) * 2012-03-23 2015-03-17 Foxconn Technology Co., Ltd. Bearing device, method of manufacturing bearing device and bearing assembly having the bearing device
TWI553239B (zh) * 2012-03-23 2016-10-11 鴻準精密工業股份有限公司 軸承及其製造方法以及採用該種軸承的軸承系統
US9284985B2 (en) * 2014-05-12 2016-03-15 Delta Electronics, Inc. Oil seal bearing and fan using same
EP3299648A4 (fr) * 2015-05-19 2018-11-21 Lifeng Luo Palier radial à gaz sous pression dynamique de type à rainure
CN107956802A (zh) * 2017-12-22 2018-04-24 天津辅然分离机械有限公司 卧螺离心机螺旋主轴的滑动轴承密封结构
TWI768423B (zh) * 2020-08-05 2022-06-21 建準電機工業股份有限公司 軸承系統及具有該軸承系統的馬達
US11415178B2 (en) * 2020-09-02 2022-08-16 Aktiebolaget Skf Method for assembling a tapered roller bearing, and assembly unit for this purpose

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US20120073139A1 (en) 2012-03-29
US8782901B2 (en) 2014-07-22
KR101213552B1 (ko) 2012-12-18
WO2005098252A1 (fr) 2005-10-20
KR20070033330A (ko) 2007-03-26

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