DE102019207093A1 - Hydrodynamic support of a bearing cage - Google Patents
Hydrodynamic support of a bearing cage Download PDFInfo
- Publication number
- DE102019207093A1 DE102019207093A1 DE102019207093.0A DE102019207093A DE102019207093A1 DE 102019207093 A1 DE102019207093 A1 DE 102019207093A1 DE 102019207093 A DE102019207093 A DE 102019207093A DE 102019207093 A1 DE102019207093 A1 DE 102019207093A1
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- sliding surface
- planet
- sliding
- cage
- 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.)
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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
- 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
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
- F16C19/463—Needle bearings with one row or needles consisting of needle rollers held in a cage, i.e. subunit without race rings
-
- 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
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/047—Sliding-contact bearings for exclusively rotary movement for axial load only with fixed wedges to generate hydrodynamic 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
- F16C33/30—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
- 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
- F16C33/4635—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 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
- F16C33/46—Cages for rollers or needles
- F16C33/4694—Single-split roller or needle 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
- F16C33/46—Cages for rollers or needles
- F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
- F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
- F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
- F16C33/545—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part rolled from a band
-
- 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
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/65—Gear shifting, change speed gear, gear box
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H2057/085—Bearings for orbital gears
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Die Erfindung betrifft ein Radial-Wälzlager (111); wobei ein Lagerkäfig (115) des Wälzlagers (111) mindestens eine Gleitfläche aufweist. Die Gleitfläche ausgebildet ist, mit einer weiteren Gleitfläche als hydrodynamisches Axial-Gleitlager zusammenzuwirken.The invention relates to a radial roller bearing (111); wherein a bearing cage (115) of the roller bearing (111) has at least one sliding surface. The sliding surface is designed to interact with a further sliding surface as a hydrodynamic axial slide bearing.
Description
Die Erfindung betrifft ein Radial-Wälzlager.The invention relates to a radial roller bearing.
Aus dem Stand der Technik sind Anlaufscheiben mit hydrodynamisch wirksam Profilierten Gleitflächen bekannt.Thrust washers with hydrodynamically effective profiled sliding surfaces are known from the prior art.
In Getrieben mit hohen Stückzahlen, wie z.B. PKW- oder NKW-Getriebe, werden aus Kostengründen in den Planetensätzen die Innenringe und Außenringe von Wälzlagern weggelassen, sodass die Wälzkörper direkt in der Lagerbohrung des Planeten bzw. auf dem Planetenbolzen laufen. Durch das Weglassen der Lagerringe sind die Wälzkörper axial nicht mehr geführt. Die Kraftübertragung erfolgt hauptsächlich radial, sodass idealisiert keine Axialkraft auftreten sollte. In der Realität entstehen z.B. durch Fertigungstoleranzen, trotzdem geringe Axialkräfte, welche die Planetenlager axial aus dem Planeten „herausdrücken“. Vor allem bei Nadelkränzen tritt dieses Phänomen auf. Der Nadelkranz verschiebt sich so weit, bis der Lagerkäfig seitlich an einer Kontaktfläche der Anlaufscheibe oder des Planetenträgers anläuft. Vor allem bei Volllast oder Überlast des Getriebes können an dieser Stelle hohe Flächenpressungen auftreten. Da der tribologische Kontakt zwischen dem einsatzgehärteten Käfig und der Anlaufscheibe bzw. der Planetenträgerwange weder klar definiert noch robust ausgelegt ist, „gräbt“ sich der harte Lagerkäfig auf Dauer in die Kontaktfläche ein.In gearboxes with high quantities, e.g. Passenger car or commercial vehicle transmissions, the inner rings and outer rings of roller bearings are omitted from the planetary gear sets for cost reasons, so that the roller bodies run directly in the bearing bore of the planet or on the planet bolt. By omitting the bearing rings, the rolling elements are no longer axially guided. Power is mainly transmitted radially, so that idealized no axial force should occur. In reality, e.g. due to manufacturing tolerances, but still low axial forces that "push" the planetary bearings axially out of the planet. This phenomenon occurs especially with needle roller and cage assemblies. The needle roller and cage shifts until the bearing cage runs laterally against a contact surface of the thrust washer or the planetary carrier. High surface pressures can occur at this point, especially with full load or overload of the gear unit. Since the tribological contact between the case-hardened cage and the thrust washer or planet carrier cheek is neither clearly defined nor robust, the hard bearing cage "digs" into the contact surface over the long term.
Der Erfindung liegt die Aufgabe zugrunde, ein Radial-Wälzlager verfügbar zu machen, das die den aus dem Stand der Technik bekannten innewohnenden Nachteile nicht aufweist. Insbesondere soll verhindert werden, dass sich ein Lagerkäfig des Radial-Wälzlagers in eine Kontaktfläche „eingräbt“.The invention is based on the object of making available a radial roller bearing that does not have the inherent disadvantages known from the prior art. In particular, it should be prevented that a bearing cage of the radial roller bearing “digs” into a contact surface.
Diese Aufgabe wird gelöst durch ein Radial-Wälzlager nach Anspruch 1. Bevorzugte Weiterbildungen sind in den Unteransprüchen enthalten und ergeben sich aus dem in
Das Radial-Wälzlager weist einen Lagerkäfig mit einer Gleitfläche auf. Bevorzugt ist der Lagerkäfig einstückig ausgestaltet.The radial roller bearing has a bearing cage with a sliding surface. The bearing cage is preferably designed in one piece.
Die Gleitfläche ist erfindungsgemäß ausgebildet, mit einer weiteren Gleitfläche als hydrodynamisches Axial-Gleitlager zusammenzuwirken. Dies impliziert, dass die Gleitfläche des Lagerkäfigs und die weitere Gleitfläche relativ zueinander um eine Drehachse des Radial-Wälzlagers verdrehbar sind.According to the invention, the sliding surface is designed to interact with a further sliding surface as a hydrodynamic axial sliding bearing. This implies that the sliding surface of the bearing cage and the further sliding surface can be rotated relative to one another about an axis of rotation of the radial roller bearing.
Ein Axiallager ist ein Lager, das ausgebildet ist, Kräfte mindestens in axialer Richtung abzustützen. Entsprechend sind die Gleitfläche des Radial-Wälzlagers und die weitere Gleitfläche ausgebildet, sich bezüglich der Drehachse des Radial-Wälzlagers axial gegeneinander abzustützen. Entsprechend haben die Gleitfläche des Lagerkäfigs und die weitere Gleitfläche bevorzugt eine kreisringförmige Grundform.A thrust bearing is a bearing that is designed to support forces at least in the axial direction. Correspondingly, the sliding surface of the radial roller bearing and the further sliding surface are designed to be axially supported against one another with respect to the axis of rotation of the radial roller bearing. Accordingly, the sliding surface of the bearing cage and the further sliding surface preferably have an annular basic shape.
Ein hydrodynamisches Gleitlager zeichnet sich dadurch aus, dass der zur Bildung eines tragenden Schmierfilms zwischen den Gleitflächen des Lagers erforderliche Druck intern, d.h. durch Drehung der Gleitflächen relativ zueinander, erzeugt wird. Die Gleitflächen eines hydrodynamischen Gleitlagers sind so ausgestaltet, dass sie bei einer Drehung relativ zueinander Schmierstoff in einem zwischen den Gleitflächen verlaufenden Lagerspalt mit Druck beaufschlagen.A hydrodynamic sliding bearing is characterized by the fact that the pressure required to form a load-bearing lubricating film between the sliding surfaces of the bearing is internal, i.e. by rotating the sliding surfaces relative to each other. The sliding surfaces of a hydrodynamic plain bearing are designed in such a way that when they rotate relative to one another they apply pressure to lubricant in a bearing gap running between the sliding surfaces.
Die Erfindung zielt darauf ab, dass sich ein tragender Schmierfilm zwischen der Gleitfläche des Lagerkäfigs und der weiteren Gleitfläche ausbildet. Dadurch wird verhindert, dass sich der Lagerkäfig in die weitere Gleitfläche „eingräbt“.The aim of the invention is that a load-bearing lubricating film is formed between the sliding surface of the bearing cage and the further sliding surface. This prevents the bearing cage from “digging” into the further sliding surface.
Ein hydrodynamisches Gleitlager lässt sich mit einer Profilierung mindestens einer der Gleitflächen realisieren. Eine Profilierung bezeichnet eine Anordnung von Erhöhungen und/oder Vertiefungen einer Oberfläche. Die Erhebungen und/oder Vertiefungen der Profilierung sind vorzugsweise bezüglich der Drehachse in Umfangsrichtung zueinander versetzt angeordnet und erstrecken sich jeweils radial über das gesamte Lager. Insbesondere können die Erhebungen und/oder Vertiefungen der Profilierung entlang von Begrenzungslinien ineinander übergehen, die bezüglich der Drehachse des Wälzlagers in radialer Richtung verlaufen.A hydrodynamic sliding bearing can be implemented with a profile of at least one of the sliding surfaces. Profiling refers to an arrangement of elevations and / or depressions on a surface. The elevations and / or depressions of the profiling are preferably arranged offset from one another in the circumferential direction with respect to the axis of rotation and each extend radially over the entire bearing. In particular, the elevations and / or depressions of the profiling can merge into one another along boundary lines which run in the radial direction with respect to the axis of rotation of the roller bearing.
In einer bevorzugten Weiterbildung weist mindestens eine der Gleitflächen, d.h. die mindestens eine Gleitfläche des Lagerkäfigs und/oder die weitere Gleitfläche, eine drehsymmetrische Profilierung auf. Dies bedeutet, dass die Erhebungen bzw. Vertiefungen mindestens einer der Gleitflächen drehsymmetrisch angeordnet sind. Die Symmetrieachse stimmt dabei mit einer Drehachse des Wälzlagers überein.In a preferred development, at least one of the sliding surfaces, i.e. the at least one sliding surface of the bearing cage and / or the further sliding surface have a rotationally symmetrical profile. This means that the elevations or depressions of at least one of the sliding surfaces are arranged with rotational symmetry. The axis of symmetry coincides with an axis of rotation of the roller bearing.
Vorzugsweise ist die drehsymmetrische Profilierung nicht rotationssymmetrisch. Die Menge sämtlicher Winkel, um welche die Profilierung der mindestens einen Gleitfläche drehsymmetrisch ist, ist also diskret. Insbesondere kann die Menge abzählbar sein.The rotationally symmetrical profiling is preferably not rotationally symmetrical. The set of all angles by which the profiling of the at least one sliding surface is rotationally symmetrical is therefore discrete. In particular, the set can be countable.
In einer bevorzugten Weiterbildung sind die mindestens eine Gleitfläche des Lagerkäfigs und die weitere Gleitfläche ausgebildet, als Keilflächenlager zusammenzuwirken. Ein Keilflächenlager ist ein hydrodynamisches Axial-Gleitlager, mit mindestens einer Gleitfläche, die Keilflächen aufweist. Die Keilflächen steigen vorzugsweise bezüglich der Drehachse des Wälzlagers in Umfangsrichtung an. Geeignete Bauformen hydrodynamischer Axial-Gleitlager kann der Fachmann dem Stand der Technik entnehmen.In a preferred development, the at least one sliding surface of the bearing cage and the further sliding surface are designed to work together as a wedge surface bearing. A wedge surface bearing is a hydrodynamic axial slide bearing with at least one sliding surface that has wedge surfaces. The wedge surfaces preferably rise in the circumferential direction with respect to the axis of rotation of the roller bearing. The person skilled in the art can find suitable designs of hydrodynamic axial slide bearings from the prior art.
Das Wälzlager ist bevorzugt weitergebildet als Teil einer Anordnung, die darüber hinaus einen Planetenträger, mindestens ein bevorzugt einstückiges Planetenrad und mindestens einen bevorzugt einstückigen Planetenbolzen aufweist.The roller bearing is preferably developed as part of an arrangement which also has a planet carrier, at least one preferably one-piece planet gear and at least one preferably one-piece planet pin.
Das Planetenrad und der Planetenbolzen bilden jeweils eine Lauffläche des Wälzlagers aus. Eine Gleitfläche, die mit der mindestens einen Gleitfläche des Lagerkäfigs als hydrodynamisches Axial-Gleitlager zusammenwirkt, wird durch den Planetenträger ausgebildet.The planet gear and the planet pin each form a running surface of the roller bearing. A sliding surface which interacts with the at least one sliding surface of the bearing cage as a hydrodynamic axial slide bearing is formed by the planet carrier.
Der Planetenträger kann die Gleitfläche ein- oder mehrstückig ausbilden. Im letztgenannten Fall weist der Planetenträger bevorzugt mindestens eine Anlaufscheibe auf, die als Axialgleitlager für das Planetenrad dient und zugleich mit der mindestens einen Gleitfläche des Lagerkäfigs als hydrodynamisches Axial-Gleitlager zusammenwirkt.The planet carrier can form the sliding surface in one or more pieces. In the latter case, the planet carrier preferably has at least one thrust washer, which serves as an axial sliding bearing for the planet gear and at the same time interacts with the at least one sliding surface of the bearing cage as a hydrodynamic axial sliding bearing.
Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in
-
1 eine Planetenstufe.
-
1 a planetary stage.
Die in
Das jeweilige Planetenrad
Die Nadeln sind in einem Lagerkäfig angeordnet. Obwohl die Nadeln in axialer Richtung nicht belastet werden, können sie sich axial verschieben, sodass der Lagerkäfig
Um eine Beschädigung der Anlaufscheiben
BezugszeichenlisteList of reference symbols
- 101101
- PlanetenstufePlanetary stage
- 103103
- HohlradRing gear
- 105105
- PlanetenträgerPlanet carrier
- 107107
- SonnenradSun gear
- 109109
- PlanetenradPlanetary gear
- 111111
- NadellagerNeedle roller bearings
- 113113
- PlanetenbolzenPlanet bolt
- 115115
- LagerkäfigBearing cage
- 117117
- AnlaufscheibeThrust washer
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019207093.0A DE102019207093A1 (en) | 2019-05-16 | 2019-05-16 | Hydrodynamic support of a bearing cage |
PCT/EP2020/055762 WO2020229007A1 (en) | 2019-05-16 | 2020-03-05 | Hydrodynamic axial support of a bearing cage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019207093.0A DE102019207093A1 (en) | 2019-05-16 | 2019-05-16 | Hydrodynamic support of a bearing cage |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102019207093A1 true DE102019207093A1 (en) | 2020-11-19 |
Family
ID=69770899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102019207093.0A Withdrawn DE102019207093A1 (en) | 2019-05-16 | 2019-05-16 | Hydrodynamic support of a bearing cage |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102019207093A1 (en) |
WO (1) | WO2020229007A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5229342U (en) * | 1975-08-20 | 1977-03-01 | ||
US4192560A (en) * | 1978-08-21 | 1980-03-11 | The Torrington Company | Bearing with bearing cage |
JPH08200375A (en) * | 1995-01-25 | 1996-08-06 | Hitachi Constr Mach Co Ltd | Cage for roller bearing |
JPH08326762A (en) * | 1995-05-29 | 1996-12-10 | Ntn Corp | Retainer for roller bearing |
DE102008010307A1 (en) * | 2008-02-21 | 2009-06-10 | Voith Patent Gmbh | Axial force transmission device for use in planetary gear, has thrust washer supporting axial forces and arranged between two elements under formation of sliding pairs, where one of pairs has higher coefficient than other pair |
JP2012047225A (en) * | 2010-08-25 | 2012-03-08 | Jtekt Corp | Bearing device |
JP2013104431A (en) * | 2011-11-10 | 2013-05-30 | Nsk Ltd | Spacer for radial needle bearing |
DE102013021636A1 (en) * | 2013-12-18 | 2015-06-18 | Daimler Ag | Bearing cage for a rolling bearing |
DE102016211906A1 (en) * | 2016-06-30 | 2018-01-04 | Aktiebolaget Skf | Cage for crankshaft bearing |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010024598A1 (en) * | 2010-06-22 | 2011-12-22 | Schaeffler Technologies Gmbh & Co. Kg | Transmission device and lubricating device and rolling bearing for the transmission device |
-
2019
- 2019-05-16 DE DE102019207093.0A patent/DE102019207093A1/en not_active Withdrawn
-
2020
- 2020-03-05 WO PCT/EP2020/055762 patent/WO2020229007A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5229342U (en) * | 1975-08-20 | 1977-03-01 | ||
US4192560A (en) * | 1978-08-21 | 1980-03-11 | The Torrington Company | Bearing with bearing cage |
JPH08200375A (en) * | 1995-01-25 | 1996-08-06 | Hitachi Constr Mach Co Ltd | Cage for roller bearing |
JPH08326762A (en) * | 1995-05-29 | 1996-12-10 | Ntn Corp | Retainer for roller bearing |
DE102008010307A1 (en) * | 2008-02-21 | 2009-06-10 | Voith Patent Gmbh | Axial force transmission device for use in planetary gear, has thrust washer supporting axial forces and arranged between two elements under formation of sliding pairs, where one of pairs has higher coefficient than other pair |
JP2012047225A (en) * | 2010-08-25 | 2012-03-08 | Jtekt Corp | Bearing device |
JP2013104431A (en) * | 2011-11-10 | 2013-05-30 | Nsk Ltd | Spacer for radial needle bearing |
DE102013021636A1 (en) * | 2013-12-18 | 2015-06-18 | Daimler Ag | Bearing cage for a rolling bearing |
DE102016211906A1 (en) * | 2016-06-30 | 2018-01-04 | Aktiebolaget Skf | Cage for crankshaft bearing |
Also Published As
Publication number | Publication date |
---|---|
WO2020229007A1 (en) | 2020-11-19 |
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