EP2989339A1 - Wälzlagerkäfig für ein radiallager - Google Patents
Wälzlagerkäfig für ein radiallagerInfo
- Publication number
- EP2989339A1 EP2989339A1 EP14709180.5A EP14709180A EP2989339A1 EP 2989339 A1 EP2989339 A1 EP 2989339A1 EP 14709180 A EP14709180 A EP 14709180A EP 2989339 A1 EP2989339 A1 EP 2989339A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- type
- rolling bearing
- oil
- bearing cage
- cage according
- 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- Withdrawn
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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
-
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
-
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4629—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from metal, e.g. cast or machined 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
-
- 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
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller 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
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
Definitions
- the invention relates to a rolling bearing cage suitable for a radial bearing, which has constructive feature that influence the distribution of lubricant.
- the rolling bearing cage is particularly suitable for use in a rolling bearing for shaft bearing, for example, intermediate shaft bearing in a gas turbine.
- the roller bearing cage comprises a number of cage pockets, which are each provided for receiving a rolling element, circumferential edge strips, which are connected to form the cage pockets by webs, wherein at least one of the edge strips has a frontal, formed as oil collecting ring portion reduced wall thickness, at least one inner circumference Edge strip parallel to the webs ver running oil guide grooves of the first type, from which each Ra a dialbohrung extending to the outer periphery of the skirt, on the inner circumference of at least one edge strip extending ⁇ l Entrysnuten second type, which each extend from the oil collecting ring to a cage pocket.
- the invention is based on the consideration that the promotion of lubricant toward the radially outer surface of the WälzMechshifigs especially in applications with high speeds plays a special role, at the same time a sufficient flow of the rolling bearing should be given in the axial direction.
- ⁇ lschreibungsnuten first type preferably extend in those peripheral portions of the cage, in each of which a two cage pockets separating web is located.
- ⁇ lschreibungsnuten second type preferably run exactly in the axial direction, that is parallel to the axis of rotation of the rolling bearing cage. Notwithstanding this, inclined ⁇ lschreibungsnuten first and / or second type can be realized. In all cases, the ⁇ lschreibungsnuten located on the inside of the overall substantially cylindrical roller bearing cage.
- the rolling bearing cage only on a single end face of an oil sump, so it is designed asymmetrically.
- the oil guide grooves of the first type include both first-type oil guide grooves and second-sub-type oil guide grooves, wherein the second sub-type oil guide grooves are longer than the first-sub type oil guide grooves and the radial bores emanating from the first sub-type oil guide grooves penetrate one of the two side edges the radial bores emanating from the second sub-type of oil-guiding grooves penetrate the second edge strip, namely from the oil-collecting ring, further away.
- the latter ⁇ lschreibungsnuten engage in both marginal ridges, wherein they project beyond the cage pockets on both sides to varying degrees and bounded on one side to the oil collecting ring.
- individual webs are reinforced in the radial direction to the inside, while other webs are unreinforced.
- the farther inwardly extending lands reduce leakage losses and contribute to increasing the oil supply efficiency by co-directing oil in the circumferential direction of the rolling bearing.
- the reinforced webs are preferably arranged in each case in the axial extension of a ⁇ l Adjustsnut first subtype according to this development, while on the inner circumference of an unreinforced web each have a ⁇ l Entrysnut second sub-type is arranged.
- one web is alternately reinforced and one web unreinforced.
- the number of ⁇ l exitsnut first subtype identical to the number of ⁇ l Entrysnut second subtype is thus half as large as the number of leading to the cage pockets oil guide grooves of the second type.
- the oil guide grooves of the various types and possibly sub-types may differ from one another.
- the oil guide grooves of the second type which supply the rolling bodies arranged in the cage pockets and thus their tracks with lubricant, are designed to convey a smaller quantity of lubricant than the oil guide grooves of the first type, which serve for the lubrication of the cage guide surfaces.
- the rolling bearing cage is preferably made of metal; In principle, however, it is also made of plastic. In all cases, it is preferably an outboard cage.
- the guided in the cage rolling elements are preferably cylindrical rollers.
- the advantage of the invention is especially in fast-rotating and thermally highly stressed - also slip endangered - bearings with out of the outer rims of a bearing ring WälzSystemkarfig that even with only one-sided Schmieröl- supply a defined and efficient supply of lubricating oil in the raceway of the rolling elements and on the cage guide surfaces is given.
- FIG. 2 shows a detail of the roller bearing cage from FIG. 1.
- a generally designated by the reference numeral 1 bearings namely cylindrical roller bearings, has an outer ring 2 with two Borden 3.4, designed as a window cage roller bearing cage 5, and a number in this guided rolling elements 6, namely cylindrical rollers on.
- the identical with the axis of symmetry of the rolling bearing cage 5 axis of the designed as a radial bearing roller bearing 1 is marked A.
- the roller bearing cage 5 essentially describes the shape of a cylinder jacket, rectangular or approximately rectangular cage pockets 8 being located in a section of full wall thickness designated by the reference numeral 7, into which rolling elements 6 are guided.
- portion 7 full wall thickness (measured in the radial direction of the rolling bearing cage 5) closes the end face (in the arrangement of Figures 1 and 2, left) integrally with a designated portion 9 reduced wall thickness of the rolling bearing cage 5 at.
- the section 9 reduced wall thickness protrudes, as shown in FIG. 1, in the axial direction, ie on the end face of the rolling bearing cage 5, beyond the outer ring 2 addition.
- embodiments are feasible in which the outer ring 2 is flush with the rolling bearing cage 5 or protrudes beyond the rolling bearing cage 5.
- the inner, generally cylindrical surface of the reduced wall thickness portion 9 becomes substantially flush with the inner, also substantially cylindrical, surface of the portion 7 Wall thickness over.
- the main function of the reduced wall thickness portion 9 is to promote lubricant, namely oil, within the rolling bearing 1.
- a feed direction Z, in which oil is conveyed from the outside to the rolling bearing 1, is illustrated in FIG. 1 with broad, curved arrows.
- the oil meets according to this idealized representation of the inside of the section 9 reduced wall thickness, which is also referred to as oil sump.
- the entire rolling bearing cage 5, also referred to as cage is integrally formed and made of metal, in particular steel or a non-ferrous metal alloy.
- the cage 5 is preferably provided with a coating, in particular non-ferrous metal coating, at least on tribologically stressed surfaces, which has better sliding properties compared to steel.
- the oil which is initially located on the inside of the oil-collecting ring 9, flows through various oil-guiding grooves 14, 15, 16, which will be discussed in more detail below, in order to guide both the cage-guiding surfaces which guide the cage 5 on the inner circumference of the shelves 3, 4 also to supply the raceways on the one hand of the outer ring 2 and on the other hand an inner ring, not shown, or a shaft instead, with oil.
- the different lengths, extending in the axial direction ⁇ l Adjustsnuten 14, 15 are referred to as ⁇ l Adjustsnuten first type and open in all cases in a radial bore 17, which extends to the outer periphery of the cage 5 and thus the lubrication of the cage guide surfaces.
- the shorter ⁇ l Adjustsnuten 14, also referred to as ⁇ l Replacementsnuten first subtype only up to first, adjacent to the oil sump ring 9 edge strip 10
- the longer ⁇ l Operationsnuten 15, also referred to as ⁇ l Adjustsnuten second subtype extend beyond the inside of a respective web 12 away to the second edge strip 11.
- the webs 12, on the inside of each a like the web 12 itself extending in the axial direction ⁇ l Insertsnut first type 15, second subtype is formed, are referred to as unreinforced webs.
- the webs 13 each arranged in the circumferential direction between two webs 12 each have an integrally formed, radially inwardly directed attachment piece 18 and are therefore referred to as reinforced webs.
- a cage pocket 8 is located between an unreinforced web 12 and a reinforced web 13.
- an oil guide groove of the second type 16 which is formed like the oil guide grooves 14, 15 of the first type on the inside of the cage 5 in its surface.
- the oil guide groove of the second type 16 does not open into a radial bore 17, but directly into the associated cage pocket 8.
- the oil guide groove of the second type 16 serves to supply lubricant to the rolling elements 6 and the raceways.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013207494.8A DE102013207494A1 (de) | 2013-04-25 | 2013-04-25 | Wälzlagerkäfig für ein Radiallager |
PCT/DE2014/200058 WO2014173401A1 (de) | 2013-04-25 | 2014-02-13 | Wälzlagerkäfig für ein radiallager |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2989339A1 true EP2989339A1 (de) | 2016-03-02 |
Family
ID=50241049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14709180.5A Withdrawn EP2989339A1 (de) | 2013-04-25 | 2014-02-13 | Wälzlagerkäfig für ein radiallager |
Country Status (4)
Country | Link |
---|---|
US (1) | US20160108963A1 (de) |
EP (1) | EP2989339A1 (de) |
DE (1) | DE102013207494A1 (de) |
WO (1) | WO2014173401A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016203831A1 (de) * | 2016-03-09 | 2017-09-14 | Schaeffler Technologies AG & Co. KG | Wälzlagerkäfig |
FR3062692B1 (fr) * | 2017-02-09 | 2019-04-19 | Safran Transmission Systems | Roulement a rotule sur rouleaux presentant une evacuation de lubrifiant amelioree, de preference pour reducteur de vitesse de turbopropulseur d'aeronef |
US10260563B2 (en) * | 2017-05-18 | 2019-04-16 | General Electric Company | Bearing cages for roller bearing assemblies |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2838348A (en) * | 1956-04-17 | 1958-06-10 | Gen Electric | High speed anti-friction bearings |
GB810706A (en) * | 1956-04-17 | 1959-03-18 | Gen Electric | Improvements in or relating to high speed ball or roller bearings |
US4192560A (en) * | 1978-08-21 | 1980-03-11 | The Torrington Company | Bearing with bearing cage |
GB2073828B (en) * | 1980-04-08 | 1983-09-14 | Rolls Royce | Bearings |
US4425011A (en) * | 1982-06-07 | 1984-01-10 | The Timken Company | Polymer cage for a high speed tapered roller bearing |
US5816713A (en) * | 1996-09-03 | 1998-10-06 | The Torrington Company | Bearing cage with T-shaped pitoling pads |
US6102580A (en) * | 1999-04-05 | 2000-08-15 | The Torrington Company | Axial-thrust bearing with improved lubricant flow |
US6406187B1 (en) * | 2000-10-09 | 2002-06-18 | Meritor Heavy Vehicle Technology, Llc | Grease lock seal |
US8783965B2 (en) * | 2004-05-13 | 2014-07-22 | Ntn Corporation | Tapered roller bearing |
GB0424115D0 (en) * | 2004-10-30 | 2004-12-01 | Rolls Royce Plc | A bearing arrangement |
US20060193545A1 (en) * | 2005-02-25 | 2006-08-31 | Honeywell International Inc. | Rolling element bearing cage with improved pilot surface lubrication |
JP4605130B2 (ja) * | 2006-09-25 | 2011-01-05 | 株式会社ジェイテクト | 転がり軸受装置 |
DE102007014142B4 (de) * | 2007-03-23 | 2019-05-29 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
DE102008004970B4 (de) | 2008-01-17 | 2020-11-19 | Volkswagen Ag | Bediensystem mit positionsveränderlicher Bedieneinheit und Verfahren zum Betreiben einer Bedieneinheit |
WO2011062188A1 (ja) * | 2009-11-17 | 2011-05-26 | 日本精工株式会社 | 円すいころ軸受および円すいころ軸受用保持器の製造方法 |
DE102010024598A1 (de) * | 2010-06-22 | 2011-12-22 | Schaeffler Technologies Gmbh & Co. Kg | Getriebevorrichtung und Schmiervorrichtung sowie Wälzlager für die Getriebevorrichtung |
JP2012041940A (ja) * | 2010-08-12 | 2012-03-01 | Ntn Corp | 円筒ころ軸受の保持器及び円筒ころ軸受 |
US8529135B2 (en) * | 2011-08-25 | 2013-09-10 | United Technologies Corporation | Angular contact ball bearing |
US8967873B2 (en) * | 2012-04-10 | 2015-03-03 | Schaeffler Technologies Gmbh & Co Kg | Flexible bearing cage |
GB201314050D0 (en) * | 2013-08-06 | 2013-09-18 | Rolls Royce Plc | Tapered oil feed bearing cage |
-
2013
- 2013-04-25 DE DE102013207494.8A patent/DE102013207494A1/de not_active Withdrawn
-
2014
- 2014-02-13 WO PCT/DE2014/200058 patent/WO2014173401A1/de active Application Filing
- 2014-02-13 EP EP14709180.5A patent/EP2989339A1/de not_active Withdrawn
- 2014-02-13 US US14/779,692 patent/US20160108963A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE102013207494A1 (de) | 2014-10-30 |
US20160108963A1 (en) | 2016-04-21 |
WO2014173401A1 (de) | 2014-10-30 |
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Legal Events
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18D | Application deemed to be withdrawn |
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P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230523 |