WO2012171719A1 - Air cooling for rolling contact bearings - Google Patents

Air cooling for rolling contact bearings Download PDF

Info

Publication number
WO2012171719A1
WO2012171719A1 PCT/EP2012/058372 EP2012058372W WO2012171719A1 WO 2012171719 A1 WO2012171719 A1 WO 2012171719A1 EP 2012058372 W EP2012058372 W EP 2012058372W WO 2012171719 A1 WO2012171719 A1 WO 2012171719A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
ring
air guide
air cooling
cooling arrangement
Prior art date
Application number
PCT/EP2012/058372
Other languages
German (de)
French (fr)
Inventor
Kleberson Sierra
Jesiel Costa
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
Priority to BR112013032311A priority Critical patent/BR112013032311A2/en
Publication of WO2012171719A1 publication Critical patent/WO2012171719A1/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
    • F16C37/00—Cooling of bearings
    • F16C37/007—Cooling of bearings of rolling bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7859—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7873—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section
    • F16C33/7876—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a single sealing ring of generally L-shaped cross-section with sealing lips
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
    • F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/324—Arrangements for lubrication or cooling of the sealing itself
    • 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

Definitions

  • An air-cooling arrangement comprising an air guide ring arranged in the circumferential direction and having punched holes oriented in the axial direction with respect to a rotation axis. Furthermore, the invention relates to a sealing arrangement with such an air cooling arrangement, which can be used to seal a rolling bearing.
  • the fan provides very low cooling capacity for most antifriction bearing applications, especially since its rotational speed can not be changed due to the antifriction bearing, is determined by other requirements and can not be increased to achieve greater cooling. task
  • the object of the invention is therefore to produce a cost-effective and space-saving air cooling arrangement for rolling bearings with improved cooling performance.
  • the object is achieved by an air cooling arrangement of the type mentioned above in that the air guide ring arranged in the circumferential direction, in the axial direction with respect to a rotation axis oriented punch holes, wherein the punch holes are at least partially covered in the axial direction by means of air fins and the air fins each go over into the air guide ring at a punch hole boundary line.
  • the air guide is concentric with the axis of rotation of a bearing, in particular rolling bearings, can be arranged.
  • the air deflectors result from the punching process, which not only allows to punch the air deflector from the air duct, but to bend it in the axial direction without completely disconnecting its connection to the air deflector.
  • the air deflector is materially connected to the air guide ring via a punched hole delimitation line of the punched hole associated with the airfoil.
  • the air conduction vanes at the punched hole delimiting line into the air guide ring which extends at the location of the punching hole, for example substantially radially to the axis of rotation.
  • the punched holes are axially oriented, whereby an axial air shift through the air guide ring is possible.
  • This is supported by the shape of the air guide wing, which may be formed, for example, according to aerodynamic criteria.
  • the air guide forms a fan function, which ensures axial air movement.
  • the air cooling arrangement has an end-toothed one Ring with an axially oriented spur toothing on.
  • the spur toothing also forms the interdental spaces, which are arranged in the circumferential direction and spaced apart from one another.
  • the interdental spaces each form a separate air reservoir and thus also a larger, coolable surface.
  • Both rings are arranged both axially to each other and rotatable relative to each other. This allows the air guide to cool the spur ring axially. Usually, the air guide is moved, that is attached to the rotatable part of a bearing.
  • the frictional heat of the rolling bearing or plain bearing passes through the spur ring, the spur gear being oriented axially in the direction of heat transport.
  • the frictional heat reaches the teeth and tooth valleys of the spur gear teeth.
  • the air guide vanes extend at least partially or completely between the spur toothing and the air guide ring.
  • the spoiler wings can protrude axially close to the tooth crowns or to the interdental spaces. The farther the air guide vanes extend axially out of the air guide ring, the greater is the air movement generated in the space between the teeth.
  • Air cooling arrangement according to one of claims 1 or 2, wherein the teeth of the spur toothing cover the air guide ring axially and radially.
  • the axial and / or the radial cover the air guide partially or completely cover.
  • the Zahn conflictraunn and thus the coolable surface is even larger.
  • a circular movement of the cooling air forms, which is brought axially to the interdental spaces and in the interdental space radially inwardly or outwardly directed and forwarded in the axial opposite direction. During this circular movement heat can be absorbed by the tooth flanks of the adjacent teeth.
  • the air guide vanes advantageously move axially over interdental spaces of the face toothing.
  • both the teeth partially or entirely made of metal or an elastic material.
  • the air guide ring and the baffles can be easily integrated into a sealing arrangement of a roller bearing independent of whether it must be integrated into a sealing ring, the elastomer or a slinger to achieve the effect of the invention.
  • a seal arrangement in particular Kassettensich- direction, with an air cooling arrangement produced, the end-toothed ring forms a sealing ring of the seal assembly and the end-toothed ring forms a slinger of the seal assembly or.
  • the front toothing may be formed of an elastomer and opposite to a made of metal spoiler.
  • rolling bearing has at least one sealing arrangement according to the invention, but may in principle also have several, wherein the Laufleitring or the front-toothed ring may have other functions held, such as the distance between prestressed components or the installation support.
  • the Laufleitring or the front-toothed ring may have other functions held, such as the distance between prestressed components or the installation support.
  • FIG. 1 shows a front-toothed ring of the air cooling arrangement from FIG. 2,
  • FIG. 4 shows a front-toothed ring of the air cooling arrangement of FIG. 5,
  • FIG. 5 shows an air cooling arrangement of the ball bearing from FIG. 6, FIG. 6 ball bearings for axle applications with forced air cooling in rotary operation
  • FIG. 8 shows an air cooling arrangement of the ball bearing from FIG. 9a
  • FIG. 8 shows an end-toothed ring of the air cooling arrangement from FIG. 8, FIG.
  • FIG. 10 is a front-toothed ring of the air cooling arrangement of FIG. 1 1,
  • FIG. 12b shows a sealing arrangement of the wheel bearing from FIG. 12a
  • FIG. 14 shows a second air guide ring
  • FIG. 15 shows a third air guide ring.
  • Fig. 1 to 3 show a ball bearing for a shaft with air cooling.
  • the end-toothed ring 12 has a spur toothing formed by an elastomer with axially aligned teeth 10 and interdental spaces 1 1.
  • the spur toothing is thus made in one piece with both the axial sealing lip 14, and with the radial sealing lip 13.
  • the sealing lips 13, 14 both lie against the air guide ring 15 designed as a spin plate, which is arranged axially to the spur toothing and permits an axial exchange of air through the punched holes 16.
  • the spur toothing is arranged radially and axially to the air guide ring 15 and is thus space-saving, wherein also radially outwardly particularly much surface is provided for cooling.
  • the air guide ring 15 is radially surrounded by the spur toothing, whereby the seal assembly shown as a cassette seal is easy to handle and can be pressed in as a whole.
  • FIGS. 7 to 9 show a third exemplary embodiment of a roller bearing, which has a clearance radially above the air cooling arrangement in order to additionally support an air movement, mainly in the axial direction.
  • both the spur toothing and the sealing lips 73, 74, 78 are formed on the elastomer of the end-toothed ring 72.
  • the teeth 70 are axially opposite the punch holes 75 of the air guide ring 75.
  • 10 to 12 show a wheel bearing with forced air cooling, in which the air cooling arrangement is designed with a cassette seal.
  • the designed as a slinger Heilleitring 1 15 is mounted on the inner ring 22 of the wheel hub by means of press fit and moves axially over the spur toothing 1 10, 1 1 1 of the end-toothed ring 1 12th
  • the air flow through the punched holes 1 16 flows in an axially opposite direction, as the air flow flowing past the radially outside of the air guide ring 15 1. It is the countercurrent to the air flow through the punch holes 1 16.
  • the formation of the associated air vanes and the direction of rotation determines the direction of both air streams.
  • FIGS. 13 to 15 show air guide rings 123, 135, 145 whose air guide vanes 124, 134, 144 have been formed in accordance with the aerodynamic requirements during the stamping process. It can be seen that the air guide vanes 124, 134, 144 are formed from the material of the respective air guide ring 123, 135, 145. They go on the punching hole boundary line 127 in the air guide 123 over.
  • the invention relates to air cooling arrangement with an arranged in the circumferential direction, in the axial direction with respect to a rotation axis oriented punched holes having air guide ring. Furthermore, the invention relates to a sealing arrangement with such an air cooling arrangement, which can be used to seal a rolling bearing. It is indicated how the cooling performance of an air guide ring can be accomplished by means of an increase in surface area of an end-toothed ring. Thanks to the rotatable relative to the front ring ring air guide air circulation is achieved, which is stimulated by the air vanes by these are alternately moved over the spur toothing and increase and decrease the air pressure in the interdental spaces alternately. This creates a stream of air that sweeps and cools more effectively over the entire surface, including the crowns, tooth flanks and tooth valleys.
  • Tooth 1 Interdental space between spur ring 13 Radial sealing lip Axial sealing lip 15 Air guide ring
  • Tooth 71 Interdental space between spur rings 73 Inner, radial sealing lip Outer, radial sealing lip 75 Air guide ring

Abstract

In summary, the invention relates to an air cooling arrangement with an air guiding ring which is arranged in the circumferential direction and, in the axial direction, has punched holes oriented with respect to an axis of rotation. Furthermore, the invention relates to a sealing arrangement with an air cooling arrangement of this type, which sealing arrangement can be used for sealing a rolling contact bearing. It is indicated how the cooling power of an air guiding ring can be brought about by means of an enlargement of the surface of a serrated ring (12). Owing to the air guiding ring which is rotatable in relation to the serrated ring (12), air circulation is achieved, the latter being simulated by the air guiding wings by the latter being moved in an alternating manner via the serration (10, 11) and increasing and lowering the air pressure in an alternating manner in the tooth interspaces. This brings about an air flow which brushes over and more effectively cools the entire surface, including the tooth crowns, the tooth faces and tooth troughs.

Description

Bezeichnung der Erfindung  Name of the invention
Lüftkühlung für Wälzlager Ventilation cooling for rolling bearings
Beschreibung description
Gebiet der Erfindung Luftkühlungsanordnung mit einem in Umfangsrichtung angeordneten, in axialer Richtung in Bezug zu einer Drehachse orientierte Stanzlöcher aufweisenden Luftleitring. Ferner betrifft die Erfindung eine Dichtungsanordnung mit einer derartigen Luftkühlungsanordnung, die zur Abdichtung eines Wälzlagers einsetzbar ist. FIELD OF THE INVENTION An air-cooling arrangement comprising an air guide ring arranged in the circumferential direction and having punched holes oriented in the axial direction with respect to a rotation axis. Furthermore, the invention relates to a sealing arrangement with such an air cooling arrangement, which can be used to seal a rolling bearing.
Stand der Technik Hintergrund der Erfindung Background of the Invention Background of the Invention
Aus UK 2123498 A ist eine Dichtungsanordnung bekannt, die einen Dichtlippen tragendem Dichtring aufweist. In die Dichtlippe sind radial nach außen offene Löcher eingebracht, womit die Dichtlippe die Funktion eines Ventilators übernimmt, der einen Luftstrom generieren. Damit wird die Betriebstemperatur des Wälzlagers durch die Kühlung seiner Dichtungsanordnung reduziert. From UK 2123498 A a sealing arrangement is known, which has a sealing lips bearing sealing ring. In the sealing lip radially outwardly open holes are introduced, whereby the sealing lip takes over the function of a fan, which generate an air flow. Thus, the operating temperature of the rolling bearing is reduced by the cooling of its seal assembly.
Problematisch daran ist, dass der Ventilator für die meisten Wälzlageranwendungen eine sehr geringe Kühlleistung aufbringt, zumal seine Rotati- onsgeschwindigkeit aufgrund des Wälzlagereinsatzes nicht veränderbar, durch andere Anforderungen festgelegt ist und zur Erzielung einer stärkeren Kühlung nicht erhöht werden kann. Aufgabenstellung The problem with this is that the fan provides very low cooling capacity for most antifriction bearing applications, especially since its rotational speed can not be changed due to the antifriction bearing, is determined by other requirements and can not be increased to achieve greater cooling. task
Zusammenfassung der Erfindung Die Aufgabe der Erfindung ist daher eine kosteneffiziente und platzsparende Luftkühlungsanordnung für Wälzlager mit einer verbesserten Kühlleistung herzustellen. Summary of the Invention The object of the invention is therefore to produce a cost-effective and space-saving air cooling arrangement for rolling bearings with improved cooling performance.
Die Aufgabe wird durch eine Luftkühlungsanordnung der eingangs genann- ten Art dadurch gelöst, dass deren Luftleitring in Umfangsrichtung angeordnete, in axialer Richtung in Bezug zu einer Drehachse orientierte Stanzlöcher aufweist, wobei die Stanzlöcher zumindest teilweise in axialer Richtung mittels Luftleitflügel abgedeckt sind und die Luftleitflügel jeweils an einer Stanzlochbegrenzungslinie in den Luftleitring übergehen. The object is achieved by an air cooling arrangement of the type mentioned above in that the air guide ring arranged in the circumferential direction, in the axial direction with respect to a rotation axis oriented punch holes, wherein the punch holes are at least partially covered in the axial direction by means of air fins and the air fins each go over into the air guide ring at a punch hole boundary line.
Der Luftleitring ist konzentrisch zur Drehachse eines Lagers, insbesondere Wälzlager, anordenbar. Die Luftleitflügel resultieren aus dem Stanzvorgang, der es erlaubt nicht nur den Luftleitflügel aus dem Luftleitring zu stanzen, sondern diesen in axialer Richtung zu verbiegen, ohne dessen Verbindung zum Luftleitflügel vollständig zu trennen. Idealerweise ist der Luftleitflügel mit dem Luftleitring über eine Stanzlochbegrenzungslinie des zum Luftflügel gehörigen Stanzloches einmaterialig verbunden. Idealerweise geht der Luftleitflügel an der Stanzlochbegrenzungslinie in den Luftleitring über, der an der Stelle des Stanzloches beispielsweise im Wesentlichen radial zur Dreh- achse verläuft. The air guide is concentric with the axis of rotation of a bearing, in particular rolling bearings, can be arranged. The air deflectors result from the punching process, which not only allows to punch the air deflector from the air duct, but to bend it in the axial direction without completely disconnecting its connection to the air deflector. Ideally, the air deflector is materially connected to the air guide ring via a punched hole delimitation line of the punched hole associated with the airfoil. Ideally, the air conduction vanes at the punched hole delimiting line into the air guide ring, which extends at the location of the punching hole, for example substantially radially to the axis of rotation.
Die Stanzlöcher sind axial orientiert, womit eine axiale Luftverschiebung durch den Luftleitring möglich ist. Dies wird unterstützt durch die Form des Luftleitflügels, der beispielsweise gemäß aerodynamischen Kriterien ausge- formt sein kann. Dadurch bildet der Luftleitring eine Ventilatorfunktion aus, die für axiale Luftbewegung sorgt. The punched holes are axially oriented, whereby an axial air shift through the air guide ring is possible. This is supported by the shape of the air guide wing, which may be formed, for example, according to aerodynamic criteria. As a result, the air guide forms a fan function, which ensures axial air movement.
Erfindungsgemäß weist die Luftkühlungsanordnung einen stirnverzahnten Ring mit einer axial orientieren Stirnverzahnung auf. Die Stirnverzahnung bildet neben den Zähnen auch die Zahnzwischenräume aus, die in Um- fangsrichtung angeordnet und voneinander beabstandet sind. Dabei bilden die Zahnzwischenräume jeweils ein separates Luftreservoir und damit auch eine größere, kühlbare Oberfläche. According to the invention, the air cooling arrangement has an end-toothed one Ring with an axially oriented spur toothing on. In addition to the teeth, the spur toothing also forms the interdental spaces, which are arranged in the circumferential direction and spaced apart from one another. The interdental spaces each form a separate air reservoir and thus also a larger, coolable surface.
Beide Ringe sind sowohl axial zueinander angeordnet und relativ zueinander drehbar. Damit kann der Luftleitring den stirnverzahnten Ring axial kühlen. Meist wird dabei der Luftleitring bewegt, das heißt am drehbaren Teil eines Lagers befestigt. Both rings are arranged both axially to each other and rotatable relative to each other. This allows the air guide to cool the spur ring axially. Usually, the air guide is moved, that is attached to the rotatable part of a bearing.
Basierend auf Wärmeleitung oder anderweitiger Wärmeübertragung passiert die Reibungswärme des Wälzlagers oder Gleitlagers den stirnverzahnten Ring, wobei die Stirnverzahnung axial in die Wärmetransportrichtung orien- tiert ist. Somit erreicht die Reibungswärme die Zähne und Zahntäler der Stirnverzahnung. Dank des gegenüber dem stirnverzahnten Ring drehbaren Luftleitrings wird eine Luftumwälzung erreicht, die von den Luftleitflügeln stimuliert wird, indem diese abwechselnd über die Zahnzwischenräume bewegt werden und den Luftdruck in den Zahnzwischenräumen abwechselnd erhöht und absenkt. Dadurch kommt ein Luftstrom zustande, der über die gesamte Oberfläche, inklusive der Zahnkronen, der Zahnflanken und Zahntälern, streicht und kühlen kann. Based on heat conduction or other heat transfer, the frictional heat of the rolling bearing or plain bearing passes through the spur ring, the spur gear being oriented axially in the direction of heat transport. Thus, the frictional heat reaches the teeth and tooth valleys of the spur gear teeth. By virtue of the air guide ring which is rotatable relative to the spur ring, an air circulation is achieved which is stimulated by the air guide vanes by moving them alternately across the interdental spaces and alternately raising and lowering the air pressure in the interdental spaces. This creates a stream of air that can sweep and cool over the entire surface, including the crowns, tooth flanks and tooth valleys.
Vorteilhafterweise erstrecken sich die Luftleitflügel zumindest teilweise oder ganz zwischen der Stirnverzahnung und dem Luftleitring. Dabei können die Luftleitflügel axial nahe an die Zahnkronen, beziehungsweise an die Zahnzwischenräume heranragen. Je weiter sich die Luftleitflügel aus dem Luftleitring axial herauserstrecken, desto größer ist die im Zahnzwischenraum erzeugte Luftbewegung. Advantageously, the air guide vanes extend at least partially or completely between the spur toothing and the air guide ring. In this case, the spoiler wings can protrude axially close to the tooth crowns or to the interdental spaces. The farther the air guide vanes extend axially out of the air guide ring, the greater is the air movement generated in the space between the teeth.
Luftkühlungsanordnung nach einem der Ansprüche 1 oder 2, wobei die Zähne der Stirnverzahnung den Luftleitring axial und radial abdecken. Dabei kann die axiale und/oder die radiale Abdeckung den Luftleitring teilweise oder ganz abdecken. Auf diese Weise ist der Zahnzwischenraunn und somit auch die kühlbare Fläche noch größer. Zusätzlich bildet sich eine Kreisbewegung der kühlenden Luft aus, die axial an die Zahnzwischenräume herangeführt und im Zahnzwischenraum radial nach innen oder außen geleitet und in die axiale Gegenrichtung weitergeleitet wird. Während dieser Kreisbewegung kann Wärme von den Zahnflanken der angrenzenden Zähne aufgenommen werden. Air cooling arrangement according to one of claims 1 or 2, wherein the teeth of the spur toothing cover the air guide ring axially and radially. In this case, the axial and / or the radial cover the air guide partially or completely cover. In this way the Zahnzwischenraunn and thus the coolable surface is even larger. In addition, a circular movement of the cooling air forms, which is brought axially to the interdental spaces and in the interdental space radially inwardly or outwardly directed and forwarded in the axial opposite direction. During this circular movement heat can be absorbed by the tooth flanks of the adjacent teeth.
Vorteilhafterweise bewegen sich die Luftleitflügel bei einer Drehung des Luftleitrings relativ zum stirnverzahnten Ring axial über Zahnzwischenräume der Stirnverzahnung. Dabei können sowohl die Zähne teilweise oder ganz aus Metall oder einem elastischen Material bestehen. Entsprechendes gilt für den Luftleitring und die Luftleitflügel. Damit sind diese Elemente auf einfache Weise in eine Dichtungsanordnung eines Wälzlagers integrierbar un- abhängig davon, ob es in einen Dichtungsring, das Elastomer oder einen Schleuderring integriert werden muss, um die erfindungsgemäße Wirkung zu erzielen. During a rotation of the air guide ring relative to the end-toothed ring, the air guide vanes advantageously move axially over interdental spaces of the face toothing. In this case, both the teeth partially or entirely made of metal or an elastic material. The same applies to the air guide ring and the baffles. Thus, these elements can be easily integrated into a sealing arrangement of a roller bearing independent of whether it must be integrated into a sealing ring, the elastomer or a slinger to achieve the effect of the invention.
Beispielsweise ist eine Dichtungsanordnung, insbesondere Kassettensich- tung, mit einer Luftkühlungsanordnung herstellbar, wobei der stirnverzahnte Ring einen Dichtring der Dichtungsanordnung und der stirnverzahnte Ring einen Schleuderring der Dichtungsanordnung ausbildet oder aufweist. Dies ist vorteilhaft, da Schleuderringe ohnehin bewegt werden müssen, um eine Aktive Abschleuderung von Spritzwasser zu erzielen. Dabei kann die Stirn- Verzahnung aus einem Elastomer gebildet sein und einem aus Metall gefertigtem Luftleitflügel gegenüberliegen. For example, a seal arrangement, in particular Kassettensich- direction, with an air cooling arrangement produced, the end-toothed ring forms a sealing ring of the seal assembly and the end-toothed ring forms a slinger of the seal assembly or. This is advantageous because slings must be moved anyway, in order to achieve an active Abschleuderung of water spray. In this case, the front toothing may be formed of an elastomer and opposite to a made of metal spoiler.
Vorteilhafterweise weist Wälzlager wenigstens eine erfindungsgemäße Dichtungsanordnung auf, kann grundsätzlich aber auch mehrere aufweisen, wobei der Laufleitring oder der stirnverzahnte Ring andere Funktionen inne haben kann, wie zum Beispiel die der Abstandhaltung zwischen vorgespannten Komponenten oder der Installationsunterstützung. Weitere vorteilhafte Ausbildungen und bevorzugte Weiterbildungen der Erfindung sind der Figurenbeschreibung und/oder den Unteransprüchen zu entnehmen. Im Folgenden wird die Erfindung anhand der in den Figuren dargestellten Ausführungsbeispiele näher beschrieben und erläutert. Advantageously, rolling bearing has at least one sealing arrangement according to the invention, but may in principle also have several, wherein the Laufleitring or the front-toothed ring may have other functions held, such as the distance between prestressed components or the installation support. Further advantageous embodiments and preferred developments of the invention can be taken from the description of the figures and / or the dependent claims. In the following the invention will be described and explained in more detail with reference to the embodiments illustrated in the figures.
Es zeigen: Fig. 1 einen stirnverzahnten Ring der Luftkühlanordnung aus Fig. 2, 1 shows a front-toothed ring of the air cooling arrangement from FIG. 2,
Fig. 2 eine Luftkühlanordnung des Kugellagers aus Fig. 3, 2 shows an air cooling arrangement of the ball bearing of FIG. 3,
Fig. 3 Kugellager mit erzwungener Luftkühlung bei Drehbetrieb, 3 ball bearings with forced air cooling in rotary operation,
Fig. 4 einen stirnverzahnten Ring der Luftkühlanordnung aus Fig. 5, 4 shows a front-toothed ring of the air cooling arrangement of FIG. 5,
Fig. 5 eine Luftkühlanordnung des Kugellagers aus Fig. 6, Fig. 6 Kugellager für Achsanwendungen mit erzwungener Luftkühlung bei Drehbetrieb, 5 shows an air cooling arrangement of the ball bearing from FIG. 6, FIG. 6 ball bearings for axle applications with forced air cooling in rotary operation,
Fig. 7 einen stirnverzahnten Ring der Luftkühlanordnung aus Fig. 8, Fig. 8 eine Luftkühlanordnung des Kugellagers aus Fig. 9a, 8 shows an air cooling arrangement of the ball bearing from FIG. 9a, FIG. 8 shows an end-toothed ring of the air cooling arrangement from FIG. 8, FIG.
Fig. 9a Kugellager mit erzwungener Luftkühlung bei Drehbetrieb, 9a ball bearings with forced air cooling in rotary operation,
Fig. 9b eine Dichtungsanordnung des Kugellagers aus Fig. 9, 9b shows a sealing arrangement of the ball bearing of FIG. 9,
Fig. 10 einen stirnverzahnten Ring der Luftkühlanordnung aus Fig. 1 1 , 10 is a front-toothed ring of the air cooling arrangement of FIG. 1 1,
Fig. 1 1 eine Luftkühlanordnung des Radlagers aus Fig. 12a, Fig. 12a Radlager mit erzwungener Luftkühlung bei Drehbetrieb 1 1 an air cooling arrangement of the wheel bearing of FIG. 12a, Fig. 12a wheel bearing with forced air cooling in rotary operation
Fig. 12b eine Dichtungsanordnung des Radlagers aus Fig. 12a FIG. 12b shows a sealing arrangement of the wheel bearing from FIG. 12a
Fig. 13 ersten Luftleitring Fig. 13 first air guide ring
Fig. 14 einen zweiten Luftleitring, und Fig. 15 einen dritten Luftleitring. 14 shows a second air guide ring, and FIG. 15 shows a third air guide ring.
Ausführungsbeispiel embodiment
Beschreibung der Zeichnungen Description of the drawings
Fig. 1 bis 3 zeigen ein Kugellager für eine Welle mit Luftkühlung. Der stirnverzahnte Ring 12 weist eine aus einem Elastomer ausgebildete Stirnverzahnung mit axial ausgerichteten Zähnen 10 und Zahnzwischenräumen 1 1 auf. Die Stirnverzahnung ist damit sowohl mit der axialen Dichtlippe 14, als auch mit der radialen Dichtlippe 13 einstückig ausgeführt. Die Dichtlippen 13, 14 liegen beide am als Schleuderblech ausgebildeten Luftleitring 15 an, welches axial zur Stirnverzahnung angeordnet ist und einen axialen Luftaustausch durch die Stanzlöcher 16 zulässt. Vorteilhafterweise ist die Stirnverzahnung radial und axial zum Luftleitring 15 angeordnet und ist somit platzsparend, wobei auch radial außenliegend besonders viel Oberfläche zur Kühlung vorgesehen ist. idealerweise wird der Luftleitring 15 von der Stirnverzahnung radial umfasst, womit die gezeigte Dichtungsanordnung als Kassettendichtung leicht handhabbar ist und als Ganzes eingepresst werden kann. Fig. 1 to 3 show a ball bearing for a shaft with air cooling. The end-toothed ring 12 has a spur toothing formed by an elastomer with axially aligned teeth 10 and interdental spaces 1 1. The spur toothing is thus made in one piece with both the axial sealing lip 14, and with the radial sealing lip 13. The sealing lips 13, 14 both lie against the air guide ring 15 designed as a spin plate, which is arranged axially to the spur toothing and permits an axial exchange of air through the punched holes 16. Advantageously, the spur toothing is arranged radially and axially to the air guide ring 15 and is thus space-saving, wherein also radially outwardly particularly much surface is provided for cooling. Ideally, the air guide ring 15 is radially surrounded by the spur toothing, whereby the seal assembly shown as a cassette seal is easy to handle and can be pressed in as a whole.
Fig. 4 bis 6 zeigen ein zweites Ausführungsbeispiel eines luftgekühlten Kugellagers für Achsantriebe. Es ergeben sich die gleichen Wirkzusammenhänge wie bereits im ersten Ausführungsbeispiel, wobei die Dichtungsanordnung keine Kassettensichtung ist und radial vom Außenring des Lagers nicht, beziehungsweise nur teilweise umfasst wird. 4 to 6 show a second embodiment of an air-cooled ball bearing for final drives. This results in the same effect relationships as in the first embodiment, wherein the seal assembly is not a cassette view and is not radially from the outer ring of the bearing, or only partially included.
Fig. 7 bis 9 zeigen ein drittes Ausführungsbeispiel eines Wälzlagers, welches radial über der Luftkühlungsanordnung einen Freiraum aufweist, um zusätzlich eine Luftbewegung, hauptsächlich in axialer Richtung zu unter- stützen. FIGS. 7 to 9 show a third exemplary embodiment of a roller bearing, which has a clearance radially above the air cooling arrangement in order to additionally support an air movement, mainly in the axial direction.
Wie bereits in den vorherigen Ausführungsbeispielen gezeigt, sind am E- lastomer des stirnverzahnten Ringes 72 sowohl die Stirnverzahnung, als auch die Dichtlippen 73, 74, 78 ausgebildet. Die Zähne 70 liegen axial den Stanzlöchern 75 des Luftleitrings 75 gegenüber. As already shown in the previous exemplary embodiments, both the spur toothing and the sealing lips 73, 74, 78 are formed on the elastomer of the end-toothed ring 72. The teeth 70 are axially opposite the punch holes 75 of the air guide ring 75.
Fig. 10 bis 12 zeigen ein Radlager mit erzwungener Luftkühlung, bei dem die Luftkühlungsanordnung mit einer Kassettendichtung ausgeführt ist. Der als Schleuderring ausgeführte Luftleitring 1 15 ist auf dem Innenring 22 der Radnabe mittels Presssitz befestigt und bewegt sich axial über die Stirnverzahnung 1 10, 1 1 1 des stirnverzahnten Rings 1 12. 10 to 12 show a wheel bearing with forced air cooling, in which the air cooling arrangement is designed with a cassette seal. The designed as a slinger Luftleitring 1 15 is mounted on the inner ring 22 of the wheel hub by means of press fit and moves axially over the spur toothing 1 10, 1 1 1 of the end-toothed ring 1 12th
Besonders vorteilhaft ist, dass der Luftstrom durch die Stanzlöcher 1 16 in einer axial entgegengesetzten Richtung fließt, als der Luftstrom, der radial außen am Luftleitring 1 15 vorbeifließt. Dabei handelt es sich um den Gegenstrom zum Luftstrom durch die Stanzlöcher 1 16. Die Ausbildung der zugehörigen Luftleitflügel und die Drehrichtung legt die Richtung beider Luftströme fest. It is particularly advantageous that the air flow through the punched holes 1 16 flows in an axially opposite direction, as the air flow flowing past the radially outside of the air guide ring 15 1. It is the countercurrent to the air flow through the punch holes 1 16. The formation of the associated air vanes and the direction of rotation determines the direction of both air streams.
Der stirnverzahnte Ring 1 10 ist am feststehenden Außenring 21 fest, der in einen nicht abgebildeten Radträger einpressbar ist. Fig. 13 bis 15 zeigen Luftleitringe 123, 135, 145 deren Luftleitflügel 124, 134, 144 entsprechend den aerodynamischen Anforderungen während des Stanzprozesses ausgebildet wurden. Es ist zu erkennen, dass die Luftleitflügel 124, 134, 144 aus dem Material des jeweiligen Luftleitringes 123, 135, 145 gebildet sind. Dabei gehen diese an der Stanzlochbegrenzungslinie 127 in den Luftleitring 123 über. The front-toothed ring 1 10 is fixed to the fixed outer ring 21 which can be pressed into a wheel carrier, not shown. FIGS. 13 to 15 show air guide rings 123, 135, 145 whose air guide vanes 124, 134, 144 have been formed in accordance with the aerodynamic requirements during the stamping process. It can be seen that the air guide vanes 124, 134, 144 are formed from the material of the respective air guide ring 123, 135, 145. They go on the punching hole boundary line 127 in the air guide 123 over.
Zusammenfassend betrifft die Erfindung Luftkühlungsanordnung mit einem in Umfangsrichtung angeordneten, in axialer Richtung in Bezug zu einer Drehachse orientierte Stanzlöcher aufweisenden Luftleitring. Ferner betrifft die Erfindung eine Dichtungsanordnung mit einer derartigen Luftkühlungsanordnung, die zur Abdichtung eines Wälzlagers einsetzbar ist. Es wird angegeben, wie die Kühlleistung eines Luftleitringes mittels einer Oberflächenvergrößerung eines stirnverzahnten Ringes bewerkstelligt werden kann. Dank des gegenüber dem stirnverzahnten Ring drehbaren Luftleitrings wird eine Luftumwälzung erreicht, die von den Luftleitflügeln stimuliert wird, indem diese abwechselnd über die Stirnverzahnung bewegt werden und den Luftdruck in den Zahnzwischenräumen abwechselnd erhöhen und absenken. Dadurch kommt ein Luftstrom zustande, der über die gesamte Oberfläche, inklusive der Zahnkronen, der Zahnflanken und Zahntälern, streicht und effektiver kühlt. In summary, the invention relates to air cooling arrangement with an arranged in the circumferential direction, in the axial direction with respect to a rotation axis oriented punched holes having air guide ring. Furthermore, the invention relates to a sealing arrangement with such an air cooling arrangement, which can be used to seal a rolling bearing. It is indicated how the cooling performance of an air guide ring can be accomplished by means of an increase in surface area of an end-toothed ring. Thanks to the rotatable relative to the front ring ring air guide air circulation is achieved, which is stimulated by the air vanes by these are alternately moved over the spur toothing and increase and decrease the air pressure in the interdental spaces alternately. This creates a stream of air that sweeps and cools more effectively over the entire surface, including the crowns, tooth flanks and tooth valleys.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
Zahn 1 1 Zahnzwischenraum stirnverzahnter Ring 13 radiale Dichtlippe axiale Dichtlippe 15 Luftleitring Tooth 1 1 Interdental space between spur ring 13 Radial sealing lip Axial sealing lip 15 Air guide ring
Stanzloch  punch hole
Wälzkörper 21 Außenring  Rolling element 21 outer ring
Innenring  inner ring
Zahn 41 Zahnzwischenraum stirnverzahnter Ring 43 radiale Dichtlippe axiale Dichtlippe 45 Luftleitring  Tooth 41 Interdental space between spur ring 43 Radial sealing lip Axial sealing lip 45 Air guide ring
Stanzloch  punch hole
Zahn 71 Zahnzwischenraum stirnverzahnter Ring 73 innere, radiale Dichtlippe äußere, radiale Dichtlippe 75 Luftleitring  Tooth 71 Interdental space between spur rings 73 Inner, radial sealing lip Outer, radial sealing lip 75 Air guide ring
Stanzloch 78 federbelastete Dichtlippe Punching hole 78 spring-loaded sealing lip
Zahn 1 1 1 Zahnzwischenraum stirnverzahnter Ring 1 13 radiale Dichtlippe axiale Dichtlippe 1 15 Luftleitring Tooth 1 1 1 Interdental space of the toothed ring 1 13 Radial sealing lip Axial sealing lip 1 15 Air guide ring
Stanzloch  punch hole
Luftleitring 124 Luftleitflügel  Air guiding ring 124 Air guiding wing
zylindrisches Befestigungsteil 126 Stanzloch cylindrical attachment member 126 punched hole
Stanzlochbegrenzungslinie  Punch hole boundary line
Luftleitflügel 135 Luftleitring  Air deflector 135 Air deflector
Stanzloch  punch hole
Luftleitflügel 145 Luftleitring  Air guide wing 145 Air guide ring
Stanzloch  punch hole
Drehachse  axis of rotation

Claims

Patentansprüche claims
Luftkühlungsanordnung mit einem in Umfangsrichtung angeordnete, in axialer Richtung in Bezug zu einer Drehachse (D) orientierte Stanzlöcher (16, 46, 76, 1 16, 126, 136) aufweisenden Luftleitring (15, 45, 75, 1 15, 123, 135, 145), wobei die Stanzlöcher (16, 46, 76, 1 16, 126, 136) zumindest teilweise in axialer Richtung mittels Luftleitflügel (124, 134, 144) abgedeckt sind und die Luftleitflügel (124, 134, 144) jeweils an einer Stanzlochbegrenzungslinie (127) in den Luftleitring (15, 45, 75, 1 15, 123, 135, 145) übergehen, wobei die Luftkühlungsanordnung einen stirnverzahnten Ring (12, 42, 72, 1 12) mit einer axial orientieren Stirnverzahnung (10, 1 1 ; 40, 41 ; 70, 71 ; 1 10, 1 1 1 ) aufweist und beide Ringe (12, 15, 42, 45, 75, 72, 1 15, 123, 135, 145) sowohl axial zueinander angeordnet und relativ zueinander drehbar sind. Air cooling arrangement with an air guide ring (15, 45, 75, 15, 123, 135, 145), wherein the punched holes (16, 46, 76, 1 16, 126, 136) at least partially in the axial direction by means of air guide vanes (124, 134, 144) are covered and the air vanes (124, 134, 144) each at a Stanzlochbegrenzungslinie (127) in the air guide ring (15, 45, 75, 1 15, 123, 135, 145) pass over, wherein the air cooling arrangement an end-toothed ring (12, 42, 72, 1 12) with an axially oriented face toothing (10, 1 1 ; 40, 41; 70, 71; 1 10, 1 1 1), and both rings (12, 15, 42, 45, 75, 72, 15, 123, 135, 145) are both disposed axially relative to each other and rotatable relative to one another are.
Luftkühlungsanordnung nach Anspruch 1 , wobei sich die Luftleitflügel (124, 134, 144) zumindest teilweise oder ganz zwischen der Stirnverzahnung (10, 1 1 ; 40, 41 ; 70, 71 ; 1 10, 1 1 1 ) und dem Luftleitring (15, 45, 75, 1 15, 123, 135, 145) erstrecken. An air cooling arrangement according to claim 1, wherein the air deflecting vanes (124, 134, 144) extend at least partially or completely between the spur toothing (10, 11, 40, 41; 70, 71; 110, 111) and the air guiding ring (15, 15; 45, 75, 15, 123, 135, 145).
Luftkühlungsanordnung nach einem der Ansprüche 1 oder 2, wobei die Zähne (10, 40, 70) der Stirnverzahnung (10, 1 1 ) den Luftleitring (15) axial und radial abdecken. Air cooling arrangement according to one of claims 1 or 2, wherein the teeth (10, 40, 70) of the spur toothing (10, 1 1) the air guide ring (15) axially and radially cover.
Luftkühlungsanordnung nach einem der vorhergehenden Ansprüche, wobei sich die Luftleitflügel (124, 134, 144) bei einer Drehung des Luftleitrings (15, 45, 75, 1 15, 123, 135, 145) relativ zum stirnverzahnten Ring (12, 42, 72, 1 12) axial über Zahnzwischenräume (1 1 , 41 , 71 ) der Stirnverzahnung (10, 1 1 ; 40, 41 ; 70, 71 ; 1 10, 1 1 1 ) bewegen. Air cooling arrangement according to one of the preceding claims, wherein the air guide vanes (124, 134, 144) with a rotation of the air guide ring (15, 45, 75, 1 15, 123, 135, 145) relative to the end-toothed ring (12, 42, 72, 1 12) axially over tooth spaces (1 1, 41, 71) of the spur toothing (10, 1 1; 40, 41; 70, 71; 1 10, 1 1 1) move.
5. Dichtungsanordnung, insbesondere Kassettensichtung, mit einer Luftkühlungsanordnung nach einem der vorhergehenden Ansprüche, wobei der stirnverzahnte Ring (12, 42, 72, 1 12) einen Dichtring der Dich- tungsanordnung und der stirnverzahnte Ring (12, 42, 72, 1 12) Schleuderring der Dichtungsanordnung ausbildet oder aufweist.5. Sealing arrangement, in particular cassette sighting, with an air cooling arrangement according to one of the preceding claims, wherein the end-toothed ring (12, 42, 72, 1 12) a sealing ring of the sealing Arrangement and the end-toothed ring (12, 42, 72, 1 12) slinger forms the seal assembly or has.
Wälzlager mit einer Dichtungsanordnung nach Anspruch 5. Rolling bearing with a seal arrangement according to claim 5.
PCT/EP2012/058372 2011-06-17 2012-05-07 Air cooling for rolling contact bearings WO2012171719A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR112013032311A BR112013032311A2 (en) 2011-06-17 2012-05-07 air cooling arrangement with an air guide ring; air cooling arrangement; sealing arrangement; rolling bearing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077732A DE102011077732A1 (en) 2011-06-17 2011-06-17 Air cooling arrangement for cooling cassette seal used for sealing e.g. ball bearing for shaft, has front toothed ring and air guiding ring axially arranged and rotatable relative to each other, where wings pass into guiding ring at line
DE102011077732.6 2011-06-17

Publications (1)

Publication Number Publication Date
WO2012171719A1 true WO2012171719A1 (en) 2012-12-20

Family

ID=45471236

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/058372 WO2012171719A1 (en) 2011-06-17 2012-05-07 Air cooling for rolling contact bearings

Country Status (3)

Country Link
BR (1) BR112013032311A2 (en)
DE (1) DE102011077732A1 (en)
WO (1) WO2012171719A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220128094A1 (en) * 2020-10-23 2022-04-28 Subaru Corporation Sealing device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017106196B3 (en) 2017-03-22 2018-09-13 Schaeffler Technologies AG & Co. KG Rolling and vehicle with a drive shaft to the rolling bearing
DE102020100511A1 (en) 2020-01-13 2021-07-15 Schaeffler Technologies AG & Co. KG Wheel bearing unit for a motor vehicle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1212715A (en) * 1968-02-14 1970-11-18 Stefa Industri Ab Shaft sealing ring
US3706483A (en) * 1971-10-06 1972-12-19 Trw Inc Heat transfer bearing mounting
GB2123498A (en) 1982-05-28 1984-02-01 Skf Svenska Kullagerfab Ab Sealing bearing cavities
DE4111994A1 (en) * 1991-04-12 1992-10-15 Herter Tamara Ball- or roller-bearing - has intermediate rollers between adjacent balls or rollers of nylon, plastic or hard rubber
DE4133296A1 (en) * 1991-04-12 1993-01-28 Herter Tamara Ball bearing with self-lubrication - has rotational load impulse striking the rollers vertically for smooth running
EP1239173A2 (en) * 2001-03-05 2002-09-11 Minebea Co., Ltd. Sealing means for a rolling contact bearing
DE10259400A1 (en) * 2002-12-19 2004-07-01 Fag Kugelfischer Ag Sealing arrangement e.g. for rolling bearing of front wheels of motor vehicle has ring-shaped gap that is sealed by sealing element and has space formed between sealing element and conducting element
WO2009142574A1 (en) * 2008-05-23 2009-11-26 Scania Cv Ab Wheel suspension device
EP2182256A1 (en) * 2008-10-30 2010-05-05 Lenze Drives GmbH Shaft seal on a shaft guidethrough

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1212715A (en) * 1968-02-14 1970-11-18 Stefa Industri Ab Shaft sealing ring
US3706483A (en) * 1971-10-06 1972-12-19 Trw Inc Heat transfer bearing mounting
GB2123498A (en) 1982-05-28 1984-02-01 Skf Svenska Kullagerfab Ab Sealing bearing cavities
DE4111994A1 (en) * 1991-04-12 1992-10-15 Herter Tamara Ball- or roller-bearing - has intermediate rollers between adjacent balls or rollers of nylon, plastic or hard rubber
DE4133296A1 (en) * 1991-04-12 1993-01-28 Herter Tamara Ball bearing with self-lubrication - has rotational load impulse striking the rollers vertically for smooth running
EP1239173A2 (en) * 2001-03-05 2002-09-11 Minebea Co., Ltd. Sealing means for a rolling contact bearing
DE10259400A1 (en) * 2002-12-19 2004-07-01 Fag Kugelfischer Ag Sealing arrangement e.g. for rolling bearing of front wheels of motor vehicle has ring-shaped gap that is sealed by sealing element and has space formed between sealing element and conducting element
WO2009142574A1 (en) * 2008-05-23 2009-11-26 Scania Cv Ab Wheel suspension device
EP2182256A1 (en) * 2008-10-30 2010-05-05 Lenze Drives GmbH Shaft seal on a shaft guidethrough

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220128094A1 (en) * 2020-10-23 2022-04-28 Subaru Corporation Sealing device
US11530721B2 (en) * 2020-10-23 2022-12-20 Subaru Corporation Sealing device

Also Published As

Publication number Publication date
BR112013032311A2 (en) 2016-12-20
DE102011077732A1 (en) 2012-02-02

Similar Documents

Publication Publication Date Title
EP2137382B1 (en) Stator heat shield
DE112013002253B4 (en) Hollow type strain wave gear unit
DE10204830A1 (en) Heat dissipation system with functionally supporting fan protection
EP3409897B1 (en) Seal assembly for a turbomachine, method for producing a seal assembly and turbomachine
DE202011110625U1 (en) Axial and radial cooled brake disc with cover
DE102015121695A1 (en) rotator
DE102011053323A1 (en) Shaft gear for electrical superimposition actuator of steering system of vehicle, has radially flexible roller bearing with inner ring fitted on outer peripheral surface of eccentric drive core of shaft gear
DE102015216270B4 (en) Friction element carrier
DE102014224368A1 (en) Friction element carrier for a clutch
WO2012171719A1 (en) Air cooling for rolling contact bearings
DE102019127221B3 (en) Coupling device
DE102015102188A1 (en) blower assembly
EP3595954A1 (en) Transmission, in particular for the powertrain of rail vehicles
DE102008016303A1 (en) Tensioning roller device for internal combustion engine of motor vehicle, has fan with axial circular section and openings permitting radial removal of air flow, and wing with supporting section connected to circular section
DE102014009926A1 (en) Rotor with cooling channel and engine with such
EP3507559A1 (en) Heat exchanger integration
DE102017202801A1 (en) Rotor core for a rotor
DE102013110162A1 (en) BIMETAL FAN COUPLING WITH AN OIL MEMORY SHAPED IN A ROTOR
EP3293409B1 (en) Wheel hub flange to which a brake disc assembly has been attached
DE102012222259A1 (en) fan arrangement
DE10333876A1 (en) Tensioning element or deflection element for belt drive or cogged-belt drive of internal combustion engine, comprises a spacer made of material with high heat conductivity in thermal contact to the inner ring of the roller bearing
DE102022204801A1 (en) Sealing device for a bearing unit
EP1845271A2 (en) Roller bearing configuration
DE1961139B2 (en) Cooling system for lorry disc brake - has annular channel in wheel in which air circulating vanes are mounted
WO2016207055A1 (en) Viscous coupling

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12718272

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112013032311

Country of ref document: BR

122 Ep: pct application non-entry in european phase

Ref document number: 12718272

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 112013032311

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20131216