WO2015090304A1 - Cage de roulement en matière synthétique pour un roulement radial et roulement radial - Google Patents

Cage de roulement en matière synthétique pour un roulement radial et roulement radial Download PDF

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Publication number
WO2015090304A1
WO2015090304A1 PCT/DE2014/200638 DE2014200638W WO2015090304A1 WO 2015090304 A1 WO2015090304 A1 WO 2015090304A1 DE 2014200638 W DE2014200638 W DE 2014200638W WO 2015090304 A1 WO2015090304 A1 WO 2015090304A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
rolling bearing
rolling
ring
bearing
Prior art date
Application number
PCT/DE2014/200638
Other languages
German (de)
English (en)
Inventor
Nico Kirchhoff
Sven Claus
Markus Scheidel
Jörg Loos
Sergej Mensch
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2015090304A1 publication Critical patent/WO2015090304A1/fr

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/3856—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/50—Lubricating properties
    • F16C2202/52—Graphite
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/50—Lubricating properties
    • F16C2202/54—Molybdenum disulfide
    • 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
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/02—Carbon based material
    • F16C2206/06—Composite carbon material, e.g. carbon fibre reinforced carbon (C/C)
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/36—Polyarylene ether ketones [PAEK], e.g. PEK, PEEK
    • 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
    • F16C2240/44—Hole or pocket sizes
    • 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
    • F16C2240/70—Diameters; Radii

Definitions

  • the invention relates to a plastic rolling bearing cage, namely cage of a Radial ball bearing, according to the preamble of claim 1. It is a ball bearing cage containing solid lubricant.
  • a generic roller bearing cage is known, for example, from EP 1 830 082 B1.
  • This rolling bearing cage is made of a resin composition containing reinforcing fibers and 3 to 40% by weight of spherical carbon.
  • the spherical carbon used as a solid lubricant may have an average particle diameter of 100 ⁇ or less.
  • JP 2010-053971 A Another ball bearing cage with a solid lubricant is known from JP 2010-053971 A.
  • this ball bearing cage substances which are supposed to reduce the friction are distributed unequally, whereby the maximum density of these substances is given on the inner surfaces of cage pockets.
  • roller bearing cage namely a ball bearing cage for a radial bearing, which is made of plastic containing solid lubricant, in relation to the cited prior art. particular with regard to durability, even under unfavorable environmental conditions.
  • Trained as a radial ball bearing cage plastic rolling bearing cage has in a known basic form exactly a cage ring and a number limited by the cage ring and by these subsequent cage webs, on the cage ring facing away from the end face of the rolling bearing cage open to take up each of a rolling element, namely one Ball, trained, partially spherically shaped cage pockets, wherein the cage ring and the integral with this cage webs contain solid lubricant.
  • the ratio between the average width of the cage web and the square root of the cage pocket diameter is less than 2.0 mm, and preferably more than 0.5 mm.
  • the width of the cage bars is measured in the circumferential direction of the cage; the width of the cage ring, however, is measured in the axial direction of the bearing.
  • the average width of each cage web is in a preferred embodiment at least 15% of the rolling element diameter.
  • the rolling element diameter corresponds approximately to the cage pocket diameter;
  • the plastic roller bearing cage is particularly suitable for use in a low-lubricated or only initially lubricated bearings. Under a poorly lubricated bearings are rolling bearings, which - apart from the solid lubricant contained in the rolling bearing cage - are operated completely unlubricated, as well as media-lubricated bearings. In the case of media lubrication, instead of a lubricant, a substance which does not primarily have lubrication function is present in the bearing. Such a substance may for example be a liquefied gas, which is conveyed in a pump equipped with the roller bearing.
  • the medium which acts on the rolling bearing, in particular surfaces, which are exposed to rolling loads, wetted to act an acid or alkali. Also in rolling bearings, which are operated under water, especially in seawater, and whose components are exposed due to lack or incomplete sealing directly to the surrounding water, it is called solicitngeschm elected camps.
  • Polyethylene retheretone is particularly suitable as plastic for producing the roller bearing cage.
  • a particularly suitable material is PEEK 10/10/10.
  • the base material polyetheretherketone in this material, which is also available with the label FC30 available on the market, each 10% PTFE (polytetrafluoroethylene), graphite, and carbon fibers added.
  • molybdenum sulfide MoS 2
  • PEEK-containing materials which are suitable for producing the roller bearing cage are described, for example, in the following dissertation: Geraldine Theiler: PTFE and PEEK Matrix Composites for Tribological Applications at Cryogenic Temperatures and in Hydrogen; Faculty III - Process Sciences - TU Berlin; Berlin 2005
  • PAI polyamideimides
  • PI polyimides
  • a common characteristic of the materials mentioned is their suitability for operation at high temperatures.
  • the continuous use temperature at which the plastic rolling bearing cage can be operated is preferably above 150 ° C., in particular above 200 ° C. Even when the temperature limits mentioned are reached, the strength of the plastic rolling bearing cage is only slightly reduced.
  • the plastic roller bearing cage is preferably designed as a snap cage.
  • each of a section of the cage ring and two integrally formed webs formed cage pocket encloses a rolling element, namely a ball, only to the extent that the ball in the mounting of the bearing is snapped into the cage pocket.
  • the webs forming a cage pocket embrace the rolling elements at their circumference by a maximum of 212.5 degrees, in particular by a maximum of 210 degrees.
  • Schnappstart that is, the width of the opening of a cage pocket on the side facing away from the cage ring end face of the rolling bearing cage, in this embodiment, at least 96% of the rolling element diameter.
  • the number of cage pockets is preferably straight, which offers manufacturing advantages, in particular in the manufacture of the rolling bearing cage by injection molding.
  • each cage web of the radial bearing snap cage is preferably dimensioned as follows, depending on the size of the rolling bearing cage:
  • the web width is preferably in the range of 50-75% of the ball diameter. From 6,000 to 14,288 mm diameter of the rolling elements, the web width is preferably at least 25% and at most 50% of the ball diameter.
  • the web width of the roller bearing cage is preferably at least 15% and a maximum of 25% of the ball diameter.
  • the minimum width of the cage ring is preferably at least 25% of the rolling element diameter in each of the stated size ranges of the rolling bearing designed as a radial bearing.
  • plastic rolling bearing cage according to the invention can be used in particular in single row deep groove ball bearings. Likewise, a plurality of such plastic rolling bearing cages is suitable for multi-row ball bearings. Short description of the drawing
  • Fig. 1 shows a first embodiment of a snap-action cage designed as a plastic roller bearing cage
  • Fig. 2 and 3 a second embodiment of a snap-action cage formed as a plastic roller bearing cage.
  • a plastic roller bearing cage 1 namely ball bearing cage, is designed as a snap cage for a radial deep groove ball bearing.
  • the roller bearing cage 1 has a single cage ring 2, on which in the axial direction of the rolling bearing not shown extending cage webs 3 are integrally formed.
  • a cage pocket 4 is formed, into which a rolling body, namely a ball, can be snapped.
  • the rolling elements may be made of steel, for example of bearing steel 100Cr6 or a corrosion-resistant steel, or of a ceramic material, for example silicon nitride.
  • the roller bearing cage 1 is produced by injection molding and has, in addition to the plastic material used as the base material, namely PEEK, a solid lubricant, namely graphite and / or MoS 2 , which, in the way of Transfer lubrication of surfaces of the rolling bearing cage 1, in particular of the cage pockets 4, via the rolling elements on the raceways, not shown, of the rolling bearing is transferable.
  • the roller bearing cage 1 according to FIG. 1 is designed substantially thick-walled and provides a considerable wear volume, which contributes to the permanent relubrication of the rolling bearing during its operation, whereby at the same time the function of the rolling bearing cage 1 which wears in the intended manner preserved in the long term.
  • the roller bearing cage 1 is particularly suitable for dry running and only minimal or initially lubricated bearings.
  • the permanent temperature at which the equipped with the plastic roller bearing cage 1 bearings is operable, is at least 150 ° C.
  • the rolling bearing is suitable, for example, for use in the food industry and in pharmaceutical production plants.
  • Each cage web 3 has a measured in the circumferential direction of the roller bearing cage 1 average width, which is designated BS and at least 25% of the diameter of the guided in the cage pockets 4 balls.
  • BS average width
  • BS average width
  • a spherically rounded bottom region 6, which is formed by the cage ring 2 and lies between two cage webs 3, as well as edge roundings 7 at the bottom region 6 opposite, open end of the rolling bearing cage 1 in the determination of the mean width BS is disregarded.
  • the diameter of the balls used as rolling elements is, apart from a Käfiebaschenspiel the rolling elements in the cage pockets 4, with the cage pocket diameter DW, that is, the inner diameter of the partially spherical shaped cage pockets 4 identical.
  • the rolling elements are very low backlash in the cage pockets 4.
  • the cage ring 2 has in each case centrally in the circumferential direction between two cage webs 3, that is centrally on the bottom portion 6 of the cage pocket 4, the lowest in Axial direction of the rolling bearing cage 1 and thus the rolling bearing measured width BK.
  • the following relation applies between the minimum cage ring width BK and the cage pocket diameter DW: 0.4 mm 2 ⁇ BK 3 / DW ⁇ 1.5 mm 2
  • the width of the cage pocket 4 at its open side is at least 96% of the rolling element diameter.
  • the cage bars 3 are at most minimally deformed. It can thus also be used for the production of the rolling bearing cage 1 also less elastic, brittle materials. Solid lubricants contained in the rolling bearing cage 1 can be distributed uniformly or unevenly in its volume and on the surface thereof.
  • the roller bearing cage 1 in the transition region of each cage web 3 to the cage ring 2 has a radially outwardly directed material elevation 5 which is rectangular in radial plan view.
  • the material elevations 5 can start in particular in the case of vibrations of the rolling bearing cage 1 having rolling bearing on the outer ring. On the one hand, the vibration is damped and transferred to the other solid lubricant on the raceway of the outer ring. In the course of operation of the rolling bearing, the material elevations 5 are subject to scheduled wear. Due to the spherical shape of the cage pockets 4 is also at partially or completely removed material elevations 5 given a guide of the rolling elements in the rolling bearing cage 1.
  • BS mean width of a cage bar

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une cage de roulement en matière synthétique (1), à savoir une cage pour roulement radial à billes, convenant en particulier aux applications sous régime de lubrification incomplète, laquelle est composée d'un anneau de cage unique (2) et d'un certain nombre d'alvéoles de cage (4) destinées à recevoir chacune un élément roulant et délimitées par l'anneau de cage (2) et par des éléments jointifs de cage (3). L'anneau de cage (2) est réalisé d'un seul tenant avec les éléments jointifs de cage (3) et contient un lubrifiant solide, le quotient de la largeur (BS) de l'élément jointif de cage (3) par la racine carrée du diamètre des alvéoles de cage (DW) étant inférieur à 2,0 mm1/2 .
PCT/DE2014/200638 2013-12-16 2014-11-17 Cage de roulement en matière synthétique pour un roulement radial et roulement radial WO2015090304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013225998.0A DE102013225998A1 (de) 2013-12-16 2013-12-16 Kunststoff-Wälzlagerkäfig für ein Radiallager und Radiallager
DE102013225998.0 2013-12-16

Publications (1)

Publication Number Publication Date
WO2015090304A1 true WO2015090304A1 (fr) 2015-06-25

Family

ID=52272787

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200638 WO2015090304A1 (fr) 2013-12-16 2014-11-17 Cage de roulement en matière synthétique pour un roulement radial et roulement radial

Country Status (2)

Country Link
DE (1) DE102013225998A1 (fr)
WO (1) WO2015090304A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017115881A1 (de) * 2017-05-10 2018-11-15 Schaeffler Technologies AG & Co. KG Wälzlagerkäfig
CN107939838A (zh) * 2017-12-26 2018-04-20 瓦房店轴承集团有限责任公司 角接触球轴承径向钻孔圆弧兜孔半保持架

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH084758A (ja) * 1994-06-20 1996-01-09 Koyo Seiko Co Ltd 玉軸受
JP2009024796A (ja) * 2007-07-20 2009-02-05 Ntn Corp 転がり軸受
JP2010053971A (ja) 2008-08-28 2010-03-11 Nsk Ltd 転がり軸受用保持器及びその製造方法、転がり軸受
EP1830082B1 (fr) 2004-12-07 2010-05-12 Jtekt Corporation Cage pour roulement a billes et roulement a billes utilisant ladite cage
WO2011006856A2 (fr) * 2009-07-14 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Cage de roulement

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Publication number Priority date Publication date Assignee Title
DE29602481U1 (de) * 1996-02-13 1996-03-28 FAG OEM und Handel AG, 97421 Schweinfurt Kunststoffkammkäfig für Kugellager
JPH11315840A (ja) * 1998-05-07 1999-11-16 Nippon Seiko Kk 転がり軸受用保持器
DE20012309U1 (de) * 2000-07-15 2000-12-07 Mpt Praez Steile Gmbh Mittweid Spritzgusskörper zur Halterung von Walzkörpern oder zur Lagerung und/oder Führung wenigstens eines bewegenden Teiles
JP4254702B2 (ja) * 2004-12-03 2009-04-15 トヨタ自動車株式会社 ベアリング、ベアリング機構、およびプランジヤポンプ
DE102009035562A1 (de) * 2009-07-31 2011-02-03 Aktiebolaget Skf Wälzlagerkäfig und Verfahren zur Herstellung eines Wälzlagerkäfigs
DE102010020019B4 (de) * 2010-05-10 2012-05-31 Gebr. Reinfurt Gmbh & Co. Kg Verfahren zum Herstellen eines kugelgeführten Schnappkäfigs aus Kunststoffmaterial
DE102012204831A1 (de) * 2012-03-27 2013-10-02 Aktiebolaget Skf Wälzlagerkäfig

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH084758A (ja) * 1994-06-20 1996-01-09 Koyo Seiko Co Ltd 玉軸受
EP1830082B1 (fr) 2004-12-07 2010-05-12 Jtekt Corporation Cage pour roulement a billes et roulement a billes utilisant ladite cage
JP2009024796A (ja) * 2007-07-20 2009-02-05 Ntn Corp 転がり軸受
JP2010053971A (ja) 2008-08-28 2010-03-11 Nsk Ltd 転がり軸受用保持器及びその製造方法、転がり軸受
WO2011006856A2 (fr) * 2009-07-14 2011-01-20 Schaeffler Technologies Gmbh & Co. Kg Cage de roulement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Geraldine Theiler: PTFE- and PEEK-Matrix Composites for Tribological Applications at Cryogenic Temperatures and in Hydrogen; Fakultät 111 - Prozesswissenschaften - der TU Berlin; Berlin", DISSERTATION, 2005

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