IN2015DN01676A - - Google Patents

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Publication number
IN2015DN01676A
IN2015DN01676A IN1676DEN2015A IN2015DN01676A IN 2015DN01676 A IN2015DN01676 A IN 2015DN01676A IN 1676DEN2015 A IN1676DEN2015 A IN 1676DEN2015A IN 2015DN01676 A IN2015DN01676 A IN 2015DN01676A
Authority
IN
India
Prior art keywords
bearing
gap
radial
peripheral surface
shaft member
Prior art date
Application number
Inventor
Shinji Komatsubara
Tetsuya Kurimura
Yasuhiro Yamamoto
Original Assignee
Ntn Toyo Bearing Co Ltd
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
Application filed by Ntn Toyo Bearing Co Ltd filed Critical Ntn Toyo Bearing Co Ltd
Publication of IN2015DN01676A publication Critical patent/IN2015DN01676A/en

Links

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
    • 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
    • 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
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • 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
    • F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
    • F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/02—Assembling 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/46—Gap sizes or clearances
    • 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
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like

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)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Power Engineering (AREA)

Abstract

A fluid dynamic bearing device (1) comprises: a bearing sleeve (8) affixed t o the inner periphery o f a housing (7); a shaft member (2) inserted in a removable manner into the inner periphery o f the bearing sleeve (8); an annular member (9) having an inner peripheral surface (9a) which forms a gap (Ga) i n the radial direction between the inner peripheral surface (9a) and the outer peripheral surface (2a) of the shaft member (2); and radial bearing sections (Rl, R2) and a thrust bearing section (T), which support the shaft member (2). A t least the radial bearing gap (Gr) of the radial bearing sections (Rl, R2) and a bottom gap (Gb) which receives the thrust bearing section (T) are filled with lubricating oil ( 11). The inner space of the housing (7) has an air gap section. If the width of the radial bearing gap (Gr) is 山 and the width of the gap (Ga) in the radial direction is d2, the fluid bearing device (1) satisfies the relationship o f 30di ≤ d2 ≤ 250di.
IN1676DEN2015 2012-09-18 2013-08-19 IN2015DN01676A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012204096A JP6189589B2 (en) 2012-09-18 2012-09-18 Fluid dynamic bearing device and motor including the same
PCT/JP2013/072048 WO2014045772A1 (en) 2012-09-18 2013-08-19 Fluid dynamic bearing device and motor with same

Publications (1)

Publication Number Publication Date
IN2015DN01676A true IN2015DN01676A (en) 2015-07-03

Family

ID=50341096

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1676DEN2015 IN2015DN01676A (en) 2012-09-18 2013-08-19

Country Status (7)

Country Link
US (1) US9476449B2 (en)
EP (1) EP2899417B1 (en)
JP (1) JP6189589B2 (en)
KR (1) KR102068517B1 (en)
CN (1) CN104641131B (en)
IN (1) IN2015DN01676A (en)
WO (1) WO2014045772A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017166575A (en) * 2016-03-16 2017-09-21 Ntn株式会社 Dynamic pressure bearing and process of manufacture thereof
US10718375B2 (en) * 2016-05-16 2020-07-21 Roller Bearing Company Of America, Inc. Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
US11473626B2 (en) 2016-05-16 2022-10-18 Roller Bearing Company Of America, Inc. Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
JP6877185B2 (en) * 2016-07-14 2021-05-26 Ntn株式会社 Fluid dynamic bearing device and motor equipped with it
WO2018012186A1 (en) * 2016-07-14 2018-01-18 Ntn株式会社 Fluid dynamic bearing device and motor with same
JP7023754B2 (en) 2017-12-08 2022-02-22 Ntn株式会社 Fluid dynamic bearing equipment
JP2019143688A (en) * 2018-02-19 2019-08-29 Ntn株式会社 Fluid dynamic pressure bearing device and motor having the same
TWI684711B (en) * 2018-08-03 2020-02-11 東培工業股份有限公司 Hydrodynamic fluid bearing vent structure

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH109250A (en) * 1996-06-20 1998-01-13 Sankyo Seiki Mfg Co Ltd Dynamic bearing device
JPH11201142A (en) * 1998-01-12 1999-07-27 Nippon Seiko Kk Dynamic pressure bearing
JP2002106549A (en) 2000-10-04 2002-04-10 Canon Inc Dynamic pressure bearing device, rotation device and deflection scanning device
JP4481475B2 (en) * 2000-11-02 2010-06-16 東北リコー株式会社 Hydrodynamic bearing unit
JP3971982B2 (en) * 2001-11-13 2007-09-05 Ｎｔｎ株式会社 Hydrodynamic bearing device
US20070230843A1 (en) 2006-01-06 2007-10-04 Tetsuya Kurimura Fluid lubricated bearing device
CN101255892B (en) * 2001-11-13 2011-11-16 Ntn株式会社 Fluid bearing device
US7048444B2 (en) 2001-11-13 2006-05-23 Ntn Corporation Fluid lubricated bearing device
US7296931B2 (en) * 2002-11-13 2007-11-20 Ntn Corporation Fluid lubricated bearing device
KR100968163B1 (en) 2002-04-23 2010-07-06 엔티엔 가부시키가이샤 Fluid bearing device
JP2004138215A (en) 2002-10-21 2004-05-13 Hitachi Powdered Metals Co Ltd Sintered oil-retaining bearing
WO2004092600A1 (en) * 2003-03-31 2004-10-28 Ntn Corporation Fluid bearing device
JP2005337377A (en) * 2004-05-27 2005-12-08 Matsushita Electric Ind Co Ltd Dynamic pressure fluid bearing device and hard disk drive device
JP2007120653A (en) * 2005-10-28 2007-05-17 Matsushita Electric Ind Co Ltd Hydrodynamic bearing device, and spindle motor and information device using the same
KR101439924B1 (en) * 2007-07-31 2014-09-12 엔티엔 가부시키가이샤 Fluid dynamic bearing device and its assembling method
JP5674184B2 (en) * 2009-08-04 2015-02-25 サムスン電機ジャパンアドバンスドテクノロジー株式会社 Disk drive
US20120230618A1 (en) * 2009-12-24 2012-09-13 Ntn Corporation Fluid dynamic bearing device

Also Published As

Publication number Publication date
EP2899417A1 (en) 2015-07-29
WO2014045772A1 (en) 2014-03-27
JP2014059014A (en) 2014-04-03
CN104641131B (en) 2017-04-19
JP6189589B2 (en) 2017-08-30
KR102068517B1 (en) 2020-01-21
KR20150053922A (en) 2015-05-19
CN104641131A (en) 2015-05-20
EP2899417B1 (en) 2019-11-13
EP2899417A4 (en) 2016-05-18
US20150233417A1 (en) 2015-08-20
US9476449B2 (en) 2016-10-25

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