EP0993558A1 - Asymmetric angular contact ball bearing - Google Patents

Asymmetric angular contact ball bearing

Info

Publication number
EP0993558A1
EP0993558A1 EP98931144A EP98931144A EP0993558A1 EP 0993558 A1 EP0993558 A1 EP 0993558A1 EP 98931144 A EP98931144 A EP 98931144A EP 98931144 A EP98931144 A EP 98931144A EP 0993558 A1 EP0993558 A1 EP 0993558A1
Authority
EP
European Patent Office
Prior art keywords
ball bearing
contact ball
bearing according
angular contact
ring
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.)
Withdrawn
Application number
EP98931144A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alexander Jan Carel De Vries
Armin Herbert Emil August Olschewski
Hendrikus Jan Kapaan
Bengt Eric Lennart Rydell
Gunter Neder
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.)
SKF Engineering and Research Centre BV
Original Assignee
SKF Engineering and Research Centre BV
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 SKF Engineering and Research Centre BV filed Critical SKF Engineering and Research Centre BV
Publication of EP0993558A1 publication Critical patent/EP0993558A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • F16C19/166Four-point-contact ball bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/58Raceways; Race rings
    • F16C33/60Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00Application independent of particular apparatuses
    • F16C2300/02General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00Apparatus or articles in engineering in general
    • F16C2361/45Brakes

Definitions

  • the invention is related to an angular contact ball bearing, comprising at least an inner ring and an outer ring which are each provided with at least one raceway, and at least one series of rolling balls which are in rolling contact with said raceways, which balls and raceways contact each other at four contact points, and two working lines being defined by each pair of opposing contact points of the raceways, which working lines intersect each other.
  • Angular contact ball bearings are widely known, e.g. from "SKF General Catalogue", Catalogue 4000 E, Reg. 47.69000.1989-04, page 285 ff.
  • a double row angular contact ball bearing is able to accommodate both radial and axial loads which act in both directions.
  • the contact angles of their load contact angle lines or working lines are about 30°; these working lines each have an identical, but opposite contact angle.
  • the four-point contact ball bearing being a single row angular contact ball bearing having raceways which are able to accommodate axial loads in both directions.
  • bearings have equal capability in both axial directions.
  • the bearing is loaded mainly in one axial direction. This means that its capability for accommodating axial forces in the other direction will not be used, other than for location/centering purposes.
  • the object of the invention is therefore to provide an angular contact ball bearing which is better adapted to the specific case of loadings which are mainly directed in one and the same axial direction.
  • This object is achieved in that the working lines intersect the axis of the bearing at mutually different angles.
  • the pair of contact points with a working line having an angle with respect to the axis of the bearing which is smaller than the corresponding angle of the other working line is intended to take the main axial load in the main axial direction.
  • the bearing is better adapted to such main load.
  • the specific orientation of the working lines in the bearing according to the invention may be obtained in various ways.
  • each ring at its facing surface facing the other ring comprises shoulders which axially adjoin the raceway and which have different diameters and as such creating bigger contact angles. This can be achieved when omitting the cage for the rolling elements and create a full complement rolling bearing.
  • At least one of the rings comprises two axial ring halves.
  • Ring(s) can also be made of sheet metal; also, they may have flanges.
  • Said axial ring halves have facing radial abutment faces. Once the axial loading on the split ring halves has reached a magnitude such that the abutment faces abut each other, the required preload is obtained of the balls with respect to the raceways. According to a further possibility, the axial ring halves are connected to each other, and are preloaded in axial direction, by means of a clamping means.
  • the invention is also related to a double row angular contact ball bearing, wherein at least one of the rings or balls comprises a non- metallic material, such as a ceramic material. Furthermore, the invention is related to a four-point contact ball bearing, wherein at least one of the ring halves comprises a non-metallic, such as a ceramic material.
  • Figure 1 shows a single row four-point contact ball bearing, having an inner ring 1 and an outer ring 2 comprising two outer ring halves 4. A single series of balls 5 has been accommodated between this inner ring 1 and outer ring 2.
  • the embodiment shown is a full complement bearing, which means that no cage has been included between the inner ring 1 and outer ring 2. Nevertheless, the invention can also be applied to a four-point contact ball bearing which does have a cage.
  • the inner ring has a shoulder 6 with a relatively large diameter creating maximal contact angle, and a shoulder 7 with a smaller diameter.
  • the raceway is fully filled with balls (full complement).
  • the outer ring half 4 has a shoulder 8 with a relatively small inner diameter
  • outer ring half 3 has a shoulder with a relatively large inner diameter.
  • Figure 2 shows an embodiment having an inner ring 14 comprising two inner ring halves 16, 17, and an outer ring 15.
  • the raceways 27, 30 of the inner and outer ring 14, 15 are formed in such a way that the a- symmetric load contact angle line pattern or working line pattern 24, 25 is obtained.
  • the outer ring carries a mounting flange 15.
  • the four-point contact ball bearing shown in figure 1 has a higher capacity for axial loads which are directed from left to right in figure 1, than in the other direction.
  • This four-point contact ball bearing is particularly fit for loadings in said one direction; although it is able to carry axial loads in the other direction as well, the magnitude of these loads should be significantly lower.
  • Figure 2 shows an embodiment having an inner ring 14 comprising two inner ring halves 16, 17, and an outer ring 15 having a mounting flange 19.
  • the raceways 27, 30 of the inner and outer ring 14, 15 are formed in such a way that the a- symmetric load contact angle line pattern or working line pattern 24, 25 is obtained.
  • FIG. 3 shows an actuator, which for instance can be used as drive means for pressing the brake pads of a disc brake onto the disc.
  • a corresponding actuator has been described fully in a co-pending Dutch patent application No. 1006543.
  • Said actuator comprises a full complement four-point contact ball bearing 31 which contains one series of rolling balls 32, an inner ring 33 which forms a unity with the nut member of screw mechanism, and an outer ring 34 comprising two outer ring halves 35, 36.
  • These outer ring halves 35, 36 together define a raceway 37, 38; the inner ring 33 defines a raceway 39.
  • the raceways 37-39 are formed in such a way that four contact points are obtained, comprising two pairs which each define a working line 40, 41.
  • the raceways 37-39 have been formed in such a way that the working lines 40-41 intersect the axis of the bearing 31 under mutually different angles.
  • Working line 40 intersects the axis 42 under a greater angle than working line 41.
  • four-point contact ball bearing 31 according to the invention is in particular fit for taking the axial loads exerted by the brake pads 2, 3 when these are pressed onto the brake disc (not shown).
  • the particular orientation of the working lines 40, 41 is obtained by an oblique orientation of the raceways 37-39. This orientation results from the relatively large diameter of the inner surface or shoulder 43 of outer bearing ring half 35, and the smaller inner diameter of the inner surface or shoulder 44 of outer ring half 36.
  • outer surface or shoulder 45 of the inner ring 34 has a diameter which is larger than the outer surface or shoulder 46 thereof.
  • radial abutment faces 54, 55 and radial outer faces 60, 61 have been provided.
  • the embodiment according to figure 4 comprises outer ring halves 3, 4 which are mutually connected by means of a clamp ring 62. Said clamp ring 62 provides the required preload in the bearing.
  • Figure 5 shows an embodiment as according to figure 4, provided with additional mounting flanges 63, 64.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
EP98931144A 1997-07-10 1998-06-26 Asymmetric angular contact ball bearing Withdrawn EP0993558A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1006534 1997-07-10
NL1006534A NL1006534C2 (nl) 1997-07-10 1997-07-10 Asymmetrisch hoekcontactkogellager.
PCT/NL1998/000372 WO1999002873A1 (en) 1997-07-10 1998-06-26 Asymmetric angular contact ball bearing

Publications (1)

Publication Number Publication Date
EP0993558A1 true EP0993558A1 (en) 2000-04-19

Family

ID=19765313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98931144A Withdrawn EP0993558A1 (en) 1997-07-10 1998-06-26 Asymmetric angular contact ball bearing

Country Status (7)

Country Link
EP (1) EP0993558A1 (nl)
JP (1) JP2001509570A (nl)
KR (1) KR20010021587A (nl)
CN (1) CN1262723A (nl)
AU (1) AU8133998A (nl)
NL (1) NL1006534C2 (nl)
WO (1) WO1999002873A1 (nl)

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NL1016811C2 (nl) * 2000-12-06 2002-06-13 Skf Ab Wentellager omvattende een met poedermetallurgietechniek verkregen onderdeel.
US6994474B2 (en) 2001-05-29 2006-02-07 Nsk Ltd. Rolling sliding member and rolling apparatus
US6827496B2 (en) 2001-08-28 2004-12-07 Koyo Seiko Co., Ltd. Four-point contact ball bearing
DE10359646A1 (de) 2003-12-18 2005-07-28 Fag Kugelfischer Ag Radlager in einem Radträger
DE202004001454U1 (de) * 2004-01-31 2004-04-01 Ab Skf Zweireihiges Wälzlager
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CN101978184B (zh) 2008-04-09 2015-03-25 美国圣戈班性能塑料公司 轴承
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DE102010028421B4 (de) * 2010-04-30 2012-02-23 Von Ardenne Anlagentechnik Gmbh Keramikwälzlager und Endblock für ein rotierendes Magnetron
DE102011076872A1 (de) * 2011-06-01 2012-12-06 Aloys Wobben Großwälzlager
CN103541993B (zh) * 2012-07-16 2016-09-07 宁波康润机械科技有限公司 管材切割机用组合式轴承
CN102794469B (zh) * 2012-08-31 2014-11-05 绍兴文理学院 一种高精度高速电主轴
EP2786845B1 (fr) 2013-04-03 2016-03-16 FELCO Motion SA Outil électroportatif
DE102013207618B4 (de) * 2013-04-26 2017-05-18 Schaeffler Technologies AG & Co. KG Spindelmutter und zugehöriger Kugelgewindetrieb
US9453530B2 (en) * 2014-06-12 2016-09-27 Thinkom Solutions, Inc. Compact integrated perimeter thrust bearing
WO2017014748A1 (en) 2015-07-21 2017-01-26 Halliburton Energy Services, Inc. Roller cone drill bit journal with asymmetric ball race and extended friction race
DE102016221708B4 (de) * 2015-12-17 2024-01-04 Schaeffler Technologies AG & Co. KG Antriebseinheit mit einer Getriebevorrichtung
CN105673708A (zh) * 2016-04-20 2016-06-15 哈尔滨理工大学 一种滚动体全表面接触轴承
CN105805152A (zh) * 2016-04-20 2016-07-27 哈尔滨理工大学 一种钢球全方位转动球轴承
CN105673703A (zh) * 2016-04-20 2016-06-15 哈尔滨理工大学 一种钢球全表面接触球轴承
CN105673700A (zh) * 2016-04-20 2016-06-15 哈尔滨理工大学 一种全表面接触球轴承
CN106640559B (zh) * 2017-01-10 2019-01-08 河南科技大学 非对称双排四点接触球轴承非对称角的设置方法以及装置

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Also Published As

Publication number Publication date
WO1999002873A1 (en) 1999-01-21
NL1006534C2 (nl) 1999-01-12
JP2001509570A (ja) 2001-07-24
AU8133998A (en) 1999-02-08
KR20010021587A (ko) 2001-03-15
CN1262723A (zh) 2000-08-09

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