WO2009156260A1 - Cassette seal - Google Patents
Cassette seal Download PDFInfo
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- WO2009156260A1 WO2009156260A1 PCT/EP2009/056971 EP2009056971W WO2009156260A1 WO 2009156260 A1 WO2009156260 A1 WO 2009156260A1 EP 2009056971 W EP2009056971 W EP 2009056971W WO 2009156260 A1 WO2009156260 A1 WO 2009156260A1
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- WO
- WIPO (PCT)
- Prior art keywords
- disc
- sealing
- centrifugal
- centrifugal disc
- radial
- 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.)
- Ceased
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Classifications
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- 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
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- 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
- F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
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- 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
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
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- 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
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
- F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
- F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other
Definitions
- the invention relates to a cartridge seal, which is placed between two coaxially arranged and rotatable relative to each other elements of an assembly for sealing an interior of the assembly and which consists of an axially inwardly disposed sealing washer and in the axial direction outboard arranged centrifugal disc with substantially L- composed cross-sections, wherein the sealing disc and the centrifugal disc define a rectangular surface with radial extensions of their cross-sections, while they are each connected with axial extensions of their cross-sections with the associated element of the assembly, and the sealing disc has at least one sealing lip, which is used to seal the Interior is in contact with the centrifugal disc.
- a cassette seal is usually composed of a sealing washer with sealing lips and a front mounted centrifugal disc. The sealing disc prevents the transition of the media between the two separate spaces via the contact force of the sealing lips, while the centrifugal disc causes a rejection of the media striking the seal from the outside during rotation due to the centrifugal force.
- a sealing system in cassette construction for a rolling bearing which is composed of a sealing washer and a centrifugal disc, which each have almost L-shaped cross-sections.
- the sealing washer is in communication with an outer ring of the rolling bearing, while the centrifugal disc is placed on an inner ring and placed in the axial direction in front of the sealing washer.
- Radiale, in the space between the inner ring and outer ring of the rolling element protruding extensions define a rectangular surface of the sealing system.
- the sealing disk has three elastomer sealing lips, one of which is in axial contact with the centrifugal disk and two in the radial direction.
- a disadvantage of such a design is that a high contact pressure of the sealing lip is necessary to ensure sufficient tightness at standstill of the system.
- a high contact pressure of the sealing lips causes high friction and thus high losses, in particular at high relative rotational speeds of the elements between which the sealing system is arranged.
- a high degree of friction ensures that the gasket is worn to a great extent and, accordingly, that the service life and / or service life is reduced. permanently.
- the invention is therefore the object of the invention to provide a cartridge seal, which ensures a secure seal both at standstill of the system and at high speeds and in which at increased speed, the friction considerably is minimized.
- the invention comprises the technical teaching that the centrifugal disc has a sealing lip on the inside of its radial extent, which is in contact with the radial extent of the sealing disc at a standstill or at low rotational speeds. From a defined speed, this sealing lip lifts due to acting centrifugal forces from the sealing disc in the radial direction and accordingly does not provide for friction.
- the sealing lip of the centrifugal disc at standstill or low speeds at which the centrifugal disc due to no or a very low centrifugal force does not provide sufficient rejection of coming from outside media contributes to a reliable seal, while at higher speeds at which the Centrifugal disc then due to a higher centrifugal force reliably ensures rejection, no longer contributes to friction.
- the centrifugal disc on the outside of its radial extent on an axially outwardly directed crank.
- an improvement of the Abschleuder für the centrifugal disc is achieved.
- at least one auxiliary seal is provided in the connection region of the sealing disk and / or the centrifugal disk with the respective associated element. This has the advantage that infiltration of the connection between the respective element and the corresponding pane by media from inside and / or outside is prevented.
- the centrifugal disk is along its radial
- the sealing disc and the centrifugal disc are respectively pressed into the associated element. This ensures a reliable seat of the seal at the desired location.
- the centrifugal disc and / or the sealing disc made of stainless steel.
- the advantage here is that the respective disc thus has a high load capacity and further insensitive to the effects of particular liquid or gaseous media.
- the secondary seals and / or the sealing lips made of an elastomeric material and are firmly connected to the centrifugal disc and the sealing disc.
- FIGURE shows a sectional view of an arrangement of the cassette seal according to the invention.
- the drawing clearly shows a cassette seal which is placed between two coaxially arranged elements 1 and 2 rotatable relative to one another. It will be clear to those skilled in the art that these elements can be a housing and a shaft, but also the outer ring and the inner ring of a roller bearing.
- the cassette seal consists of a sealing disc 3 and a centrifugal disc 4, which each have a substantially L-shaped cross-section. To counteract an axial movement of the cassette seal, the sealing disc 3 is pressed into element 1 and the centrifugal disc 4 in element 2. At its radial extent 5, the sealing disc 3 further comprises a sealing lip 6 which is in radial contact with the centrifugal disc 4 in contact.
- the centrifugal disc 4 has on the inside of its radial extent 7 via a sealing lip 8, which conforms in the axial direction of the sealing disc 3.
- This sealing lip 8 has the peculiarity that it lifts off the contact with the sealing disc 3 from a certain speed of the element 2 and thus the centrifugal disc 4 and thus causes no friction. At low speeds or standstill of element 2, however, it ensures a reliable seal.
- side seals 9 and 10 are provided in these connection areas.
- the secondary seal 9 in the region of the centrifugal disk 4 is arranged on its axial outside and thus predominantly for protection against external influences, while the secondary seal 10 of the sealing disk 3 predominantly for preventing leakage of a medium, such as lubricant, from an interior of the system at the axial inside is placed. Furthermore, the centrifugal disc 4 at the end of its radial extent 7 a crank 11 in order to further improve the Abschleuder Gold. LIST OF REFERENCE NUMBERS
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
Bezeichnung der Erfindung Name of the invention
Kassettendichtungcassette seal
Beschreibungdescription
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine Kassettendichtung, welche zwischen zwei koaxial angeordneten und relativ zueinander rotierbaren Elementen einer Baugruppe zur Abdichtung eines Innenraumes der Baugruppe platziert ist und welche sich aus einer in axiale Richtung innenliegend angeordneten Dichtscheibe und einer in axiale Richtung außenliegend angeordneten Schleuderscheibe mit im Wesentlichen L-förmigen Querschnitten zusammensetzt, wobei die Dichtscheibe und die Schleuderscheibe mit radialen Erstreckungen ihrer Querschnitte eine rechteckförmige Fläche definieren, während sie mit axialen Erstreckungen ihrer Querschnitte jeweils fest mit dem zugeordneten Element der Baugruppe verbunden sind, und die Dichtscheibe mindestens eine Dichtlippe aufweist, welche zur Abdichtung des Innenraumes mit der Schleuderscheibe in Kontakt steht.The invention relates to a cartridge seal, which is placed between two coaxially arranged and rotatable relative to each other elements of an assembly for sealing an interior of the assembly and which consists of an axially inwardly disposed sealing washer and in the axial direction outboard arranged centrifugal disc with substantially L- composed cross-sections, wherein the sealing disc and the centrifugal disc define a rectangular surface with radial extensions of their cross-sections, while they are each connected with axial extensions of their cross-sections with the associated element of the assembly, and the sealing disc has at least one sealing lip, which is used to seal the Interior is in contact with the centrifugal disc.
Hintergrund der ErfindungBackground of the invention
Zum Abdichten von Zwischenräumen zwischen zwei koaxial angeordneten und relativ zueinander rotierenden Teilen, wie beispielsweise eine in einem Gehäuse laufende Welle oder ein Innenring und ein Außenring eines Wälzlagers, kommen unter anderem Dichtsysteme in Form so genannter Kassettendichtungen zum Einsatz. Diese Dichtsysteme haben hierbei die Aufgabe, ein Austreten von Schmierstoff aus dem Zwischenraum nach außen und ein Eindringen von festen, flüssigen und/oder gasförmigen Medien von außen in den Zwischen- räum zu verhindern. Hierbei muss eine Abdichtung sowohl im statischen Fall, also bei Stillstand beider Teile, als auch im dynamischen Fall bei rotierenden Teilen gewährleistet werden. Eine Kassettendichtung setzt sich dabei normalerweise aus einer Dichtscheibe mit Dichtlippen sowie einer davor angeordneten Schleuderscheibe zusammen. Die Dichtscheibe verhindert dabei über die Anpresskraft der Dichtlippen einen Übergang der Medien zwischen den beiden getrennten Räumen, während die Schleuderscheibe bei Rotation aufgrund der Fliehkraft eine Zurückweisung der von außen auf die Dichtung treffenden Medien bewirkt.For sealing gaps between two coaxially arranged and relatively rotating parts, such as a shaft running in a housing or an inner ring and an outer ring of a rolling bearing, Among other sealing systems in the form of so-called cassette seals are used. These sealing systems have the task here of preventing leakage of lubricant from the intermediate space to the outside and penetration of solid, liquid and / or gaseous media from the outside into the intermediate space. In this case, a seal must be ensured both in the static case, ie at standstill of both parts, as well as in the dynamic case of rotating parts. A cassette seal is usually composed of a sealing washer with sealing lips and a front mounted centrifugal disc. The sealing disc prevents the transition of the media between the two separate spaces via the contact force of the sealing lips, while the centrifugal disc causes a rejection of the media striking the seal from the outside during rotation due to the centrifugal force.
Aus der US 6,817,769 B2 ist ein Dichtungssystem in Kassettenbauweise für ein Wälzlager bekannt, welches sich aus einer Dichtscheibe und einer Schleuderscheibe, welche jeweils nahezu L-förmige Querschnitte aufweisen, zusammensetzt. Hierbei steht die Dichtscheibe in Verbindung mit einem Außenring des Wälzlagers, während die Schleuderscheibe auf einem Innenring aufgesetzt ist und in axialer Richtung vor der Dichtscheibe platziert ist. Radiale, in den Zwischenraum zwischen Innenring und Außenring des Wälzkörpers hineinragende Erstreckungen definieren dabei eine rechteckförmige Fläche des Dichtungssystems. Des Weiteren verfügt die Dichtscheibe am Ende ihrer radialen Erstreckung über drei Elastomerdichtlippen, von denen eine in axialer Richtung und zwei in radialer Richtung mit der Schleuderscheibe in Kontakt stehen.From US 6,817,769 B2, a sealing system in cassette construction for a rolling bearing is known, which is composed of a sealing washer and a centrifugal disc, which each have almost L-shaped cross-sections. Here, the sealing washer is in communication with an outer ring of the rolling bearing, while the centrifugal disc is placed on an inner ring and placed in the axial direction in front of the sealing washer. Radiale, in the space between the inner ring and outer ring of the rolling element protruding extensions define a rectangular surface of the sealing system. Furthermore, at the end of its radial extent, the sealing disk has three elastomer sealing lips, one of which is in axial contact with the centrifugal disk and two in the radial direction.
Nachteilhaft an einer derartigen Ausführung ist, dass eine hohe Anpressung der Dichtlippe nötig ist, um bei Stillstand des Systems eine ausreichende Dichtheit zu gewährleisten. Eine hohe Anpressung der Dichtlippen bewirkt aber ins- besondere bei hohen Relativdrehzahlen der Elemente, zwischen welchen das Dichtungssystem angeordnet ist, eine hohe Reibung und somit hohe Verluste. Des Weiteren sorgt eine hohe Reibung für einen starken Verschleiß der Dichtung und dementsprechend für eine niedrige Lebensdauer bzw. Gebrauchs- dauer.A disadvantage of such a design is that a high contact pressure of the sealing lip is necessary to ensure sufficient tightness at standstill of the system. However, a high contact pressure of the sealing lips causes high friction and thus high losses, in particular at high relative rotational speeds of the elements between which the sealing system is arranged. Furthermore, a high degree of friction ensures that the gasket is worn to a great extent and, accordingly, that the service life and / or service life is reduced. permanently.
Aufgabe der ErfindungObject of the invention
Ausgehend von den dargelegten Nachteilen des bekannten Standes der Tech- nik liegt der Erfindung deshalb die Aufgabe zu Grunde, eine Kassettendichtung zu schaffen, welche sowohl beim Stillstand des Systems als auch bei hohen Drehzahlen eine sichere Abdichtung gewährleistet und bei welcher bei erhöhter Drehzahl die Reibung erheblich minimiert ist.Based on the stated disadvantages of the known state of the art, the invention is therefore the object of the invention to provide a cartridge seal, which ensures a secure seal both at standstill of the system and at high speeds and in which at increased speed, the friction considerably is minimized.
Beschreibung der ErfindungDescription of the invention
Diese Aufgabe wird ausgehend vom Oberbegriff des Anspruchs 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Die nachfolgenden, abhängigen Ansprüche geben vorteilhafte Weiterbildungen der Erfindung wieder.This object is achieved on the basis of the preamble of claim 1 in conjunction with its characterizing features. The following, dependent claims give advantageous developments of the invention.
Die Erfindung umfasst die technische Lehre, dass die Schleuderscheibe an der Innenseite ihrer radialen Erstreckung eine Dichtlippe aufweist, welche bei Stillstand oder niedrigen Drehzahlen mit der radialen Erstreckung der Dichtscheibe in Kontakt steht. Ab einer definierten Drehzahl hebt diese Dichtlippe aufgrund wirkender Fliehkräfte von der Dichtscheibe in radiale Richtung ab und sorgt dementsprechend nicht mehr für Reibung. Somit trägt die Dichtlippe der Schleuderscheibe bei Stillstand oder niedrigen Drehzahlen, bei welchen die Schleuderscheibe aufgrund keiner oder einer nur sehr niedrigen Fliehkraft für keine ausreichenden Abweisung von von außen kommenden Medien sorgt, zu einer zuverlässigen Abdichtung bei, während diese bei höheren Drehzahlen, bei welchen die Schleuderscheibe dann aufgrund einer höheren Fliehkraft zuverlässig für Abweisung sorgt, nicht mehr zur Reibung beiträgt.The invention comprises the technical teaching that the centrifugal disc has a sealing lip on the inside of its radial extent, which is in contact with the radial extent of the sealing disc at a standstill or at low rotational speeds. From a defined speed, this sealing lip lifts due to acting centrifugal forces from the sealing disc in the radial direction and accordingly does not provide for friction. Thus, the sealing lip of the centrifugal disc at standstill or low speeds at which the centrifugal disc due to no or a very low centrifugal force does not provide sufficient rejection of coming from outside media, contributes to a reliable seal, while at higher speeds at which the Centrifugal disc then due to a higher centrifugal force reliably ensures rejection, no longer contributes to friction.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung weist die Schleuderscheibe an der Außenseite ihrer radialen Erstreckung eine axial nach außen gerichtete Kröpfung auf. Durch diese Kröpfung wird eine Verbesserung der Abschleuderwirkung der Schleuderscheibe erreicht. In Weiterbildung der Erfindung ist im Verbindungsbereich der Dichtscheibe und/oder der Schleuderscheibe mit dem jeweils zugeordneten Element mindestens eine Nebenabdichtung vorgesehen. Dies hat den Vorteil, dass ein Unterwandern der Verbindung zwischen dem jeweiligen Element und der entspre- chenden Scheibe durch Medien von Innen und/oder von Außen verhindert wird.According to a further advantageous embodiment of the invention, the centrifugal disc on the outside of its radial extent on an axially outwardly directed crank. By this cranking an improvement of the Abschleuderwirkung the centrifugal disc is achieved. In a further development of the invention, at least one auxiliary seal is provided in the connection region of the sealing disk and / or the centrifugal disk with the respective associated element. This has the advantage that infiltration of the connection between the respective element and the corresponding pane by media from inside and / or outside is prevented.
Vorteilhafterweise ist des Weiteren die Schleuderscheibe entlang ihrer radialenAdvantageously, furthermore, the centrifugal disk is along its radial
Erstreckung mit einem Elastomermaterial überzogen. Durch diese Maßnahme kann die Schleuderscheibe vor Korrosion geschützt und zudem je nach Be- schaffenheit des Elastomers die Abschleuderwirkung weiter verbessert werden.Extension covered with an elastomeric material. As a result of this measure, the centrifugal disk can be protected against corrosion and, in addition, depending on the nature of the elastomer, the throw-off effect can be further improved.
Entsprechend einer weiteren vorteilhaften Ausführungsform der Erfindung sind die Dichtscheibe und die Schleuderscheibe jeweils in das zugeordnete Element eingepresst. Dadurch wird ein zuverlässiger Sitz der Dichtung an der ge- wünschten Stelle gewährleistet.According to a further advantageous embodiment of the invention, the sealing disc and the centrifugal disc are respectively pressed into the associated element. This ensures a reliable seat of the seal at the desired location.
In Weiterbildung der Erfindung bestehen die Schleuderscheibe und/oder die Dichtscheibe aus Edelstahl. Vorteilhaft ist hierbei, dass die jeweilige Scheibe somit eine hohe Belastbarkeit aufweist und des Weiteren unempfindlich gegen die Einwirkungen insbesondere der flüssigen oder gasförmigen Medien ist.In a further development of the invention, the centrifugal disc and / or the sealing disc made of stainless steel. The advantage here is that the respective disc thus has a high load capacity and further insensitive to the effects of particular liquid or gaseous media.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung bestehen die Nebenabdichtungen und/oder die Dichtlippen aus einem Elastomermaterial und sind fest mit der Schleuderscheibe und der Dichtscheibe verbunden. Dadurch wird die Dichtwirkung gewährleistet und zudem ein Ablösen der Dichtungen von den Scheiben unterbunden.According to a further advantageous embodiment of the invention, the secondary seals and / or the sealing lips made of an elastomeric material and are firmly connected to the centrifugal disc and the sealing disc. As a result, the sealing effect is ensured and also prevents detachment of the seals from the discs.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Weitere, die Erfindung verbessernden Maßnahmen werden nachstehend anhand einer bevorzugten Ausführungsform der Erfindung näher beschrieben. Die einzige Figur zeigt dabei eine Schnittansicht einer Anordnung der erfindungsgemäßen Kassettendichtung. Ausführliche Beschreibung der ZeichnungenFurther measures improving the invention will be described in more detail below with reference to a preferred embodiment of the invention. The single FIGURE shows a sectional view of an arrangement of the cassette seal according to the invention. Detailed description of the drawings
Aus der Zeichnung geht deutlich eine Kassettendichtung hervor, welche zwi- sehen zwei koaxial angeordneten, relativ zueinander rotierbaren Elementen 1 und 2 platziert ist. Dem Fachmann wird hierbei klar sein, dass es sich bei diesen Elementen um ein Gehäuse und eine Welle, aber auch um den Außenring und den Innenring eines Wälzlagers handeln kann. Die Kassettendichtung besteht aus einer Dichtscheibe 3 und einer Schleuderscheibe 4, welche jeweils einen im Wesentlichen L-förmigen Querschnitt aufweisen. Um einer axialen Bewegung der Kassettendichtung entgegenzuwirken, ist die Dichtscheibe 3 in Element 1 und die Schleuderscheibe 4 in Element 2 eingepresst. An ihrer radialen Erstreckung 5 weist die Dichtscheibe 3 des Weiteren eine Dichtlippe 6 auf, welche in radialer Richtung mit der Schleuderscheibe 4 in Kontakt steht.The drawing clearly shows a cassette seal which is placed between two coaxially arranged elements 1 and 2 rotatable relative to one another. It will be clear to those skilled in the art that these elements can be a housing and a shaft, but also the outer ring and the inner ring of a roller bearing. The cassette seal consists of a sealing disc 3 and a centrifugal disc 4, which each have a substantially L-shaped cross-section. To counteract an axial movement of the cassette seal, the sealing disc 3 is pressed into element 1 and the centrifugal disc 4 in element 2. At its radial extent 5, the sealing disc 3 further comprises a sealing lip 6 which is in radial contact with the centrifugal disc 4 in contact.
Die Schleuderscheibe 4 verfügt auf der Innenseite ihrer radialen Erstreckung 7 über eine Dichtlippe 8, welche sich in axialer Richtung an die Dichtscheibe 3 anschmiegt. Diese Dichtlippe 8 weist die Besonderheit auf, dass sie ab einer bestimmten Drehzahl des Elements 2 und damit der Schleuderscheibe 4 von dem Kontakt mit der Dichtscheibe 3 abhebt und somit keine Reibung verursacht. Bei niedrigen Drehzahlen oder Stillstand des Elements 2 sorgt sie jedoch für eine zuverlässige Abdichtung. Um zusätzlich auch ein Unterwandern der Verbindungen Element 1 und Dichtscheibe 3, sowie Element 2 und Schleuderscheibe 4 zu verhindern, sind in diesen Verbindungsbereichen jeweils Ne- benabdichtungen 9 und 10 vorgesehen. Die Nebenabdichtung 9 im Bereich der Schleuderscheibe 4 ist hierbei auf deren axialen Außenseite und somit vorwiegend zum Schutz gegen äußere Einflüsse angeordnet, während die Nebenabdichtung 10 der Dichtscheibe 3 vorwiegend zum Verhindern eines Austretens eines Mediums, wie beispielsweise Schmiermittel, aus einem Innenraum des Systems an deren axialen Innenseite platziert ist. Des Weiteren weist die Schleuderscheibe 4 am Ende ihrer radialen Erstreckung 7 eine Kröpfung 11 auf, um die Abschleuderwirkung weiter zu verbessern. BezugszahlenlisteThe centrifugal disc 4 has on the inside of its radial extent 7 via a sealing lip 8, which conforms in the axial direction of the sealing disc 3. This sealing lip 8 has the peculiarity that it lifts off the contact with the sealing disc 3 from a certain speed of the element 2 and thus the centrifugal disc 4 and thus causes no friction. At low speeds or standstill of element 2, however, it ensures a reliable seal. In order to prevent in addition also a submergence of the connections element 1 and sealing disc 3, as well as element 2 and centrifugal disc 4, side seals 9 and 10 are provided in these connection areas. The secondary seal 9 in the region of the centrifugal disk 4 is arranged on its axial outside and thus predominantly for protection against external influences, while the secondary seal 10 of the sealing disk 3 predominantly for preventing leakage of a medium, such as lubricant, from an interior of the system at the axial inside is placed. Furthermore, the centrifugal disc 4 at the end of its radial extent 7 a crank 11 in order to further improve the Abschleuderwirkung. LIST OF REFERENCE NUMBERS
erstes Element zweites Element Dichtscheibe Schleuderscheibe radiale Erstreckung Dichtscheibe Dichtlippe radiale Erstreckung Schleuderscheibe Dichtlippe Nebenabdichtung Schleuderscheibe Nebenabdichtung Dichtscheibe Kröpfung first element second element Sealing disk Centrifugal disc Radial extent Sealing disc Sealing lip Radial extent Centrifugal disc Sealing lip Secondary sealing Centrifugal disc Secondary sealing Sealing disk Cranking
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008030710.6 | 2008-06-27 | ||
| DE200810030710 DE102008030710A1 (en) | 2008-06-27 | 2008-06-27 | cassette seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009156260A1 true WO2009156260A1 (en) | 2009-12-30 |
Family
ID=40908469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/056971 Ceased WO2009156260A1 (en) | 2008-06-27 | 2009-06-05 | Cassette seal |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102008030710A1 (en) |
| WO (1) | WO2009156260A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2529807A (en) * | 2014-08-26 | 2016-03-09 | Skf Ab | Dynamic radial seal |
| CN109210087A (en) * | 2017-07-07 | 2019-01-15 | 斯凯孚公司 | Sealing device for rolling bearing |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010015200A1 (en) | 2010-04-16 | 2011-10-20 | Schaeffler Technologies Gmbh & Co. Kg | Cassette seal for installation between outer and inner bearing rings of rolling bearing to sealing clutch release bearing for separation clutch in drive train of motor vehicle, has axial profile leg fixed on inner ring by stabilizing ring |
| WO2011160657A1 (en) * | 2010-06-25 | 2011-12-29 | Aktiebolaget Skf | Lip seal |
| DE102014216059A1 (en) | 2014-08-13 | 2016-02-18 | Schaeffler Technologies AG & Co. KG | sealing arrangement |
| DE102016212122A1 (en) | 2016-07-04 | 2017-06-22 | Schaeffler Technologies AG & Co. KG | Sealing arrangement and machine element arrangement |
| DE102017110323A1 (en) * | 2017-05-12 | 2018-11-15 | Schaeffler Technologies AG & Co. KG | sealing arrangement |
| DE102017113391A1 (en) | 2017-06-19 | 2018-12-20 | Schaeffler Technologies AG & Co. KG | Seal assembly and race and seal assembly with this |
| DE102018107873B4 (en) | 2018-04-04 | 2020-09-03 | Schaeffler Technologies AG & Co. KG | Arrangement with machine elements and sealing arrangement therefor |
| DE102018125777A1 (en) | 2018-10-17 | 2020-04-23 | Schaeffler Technologies AG & Co. KG | Rolling bearing and seal for a rolling bearing |
| DE102022112274A1 (en) | 2022-05-17 | 2023-11-23 | Schaeffler Technologies AG & Co. KG | Cassette seal and roller bearings |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4572516A (en) * | 1985-06-12 | 1986-02-25 | General Motors Corporation | Low friction dynamic seal assembly with centrifugal deflection |
| EP1096187A2 (en) * | 1999-11-01 | 2001-05-02 | Forsheda AB | Cassette sealing and method for manufacturing such sealing |
| JP2003049854A (en) * | 2001-08-03 | 2003-02-21 | Koyo Seiko Co Ltd | Hermetically sealed device |
| US20030230849A1 (en) * | 2002-06-13 | 2003-12-18 | Skf Industrie S.P.A. | Sealing device with an integral encoder wheel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6817769B2 (en) | 2002-09-30 | 2004-11-16 | Emerson Power Transmission Manufacturing, L.P. | Roller bearing having high performance bearing seal and cartridge |
-
2008
- 2008-06-27 DE DE200810030710 patent/DE102008030710A1/en not_active Ceased
-
2009
- 2009-06-05 WO PCT/EP2009/056971 patent/WO2009156260A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4572516A (en) * | 1985-06-12 | 1986-02-25 | General Motors Corporation | Low friction dynamic seal assembly with centrifugal deflection |
| EP1096187A2 (en) * | 1999-11-01 | 2001-05-02 | Forsheda AB | Cassette sealing and method for manufacturing such sealing |
| JP2003049854A (en) * | 2001-08-03 | 2003-02-21 | Koyo Seiko Co Ltd | Hermetically sealed device |
| US20030230849A1 (en) * | 2002-06-13 | 2003-12-18 | Skf Industrie S.P.A. | Sealing device with an integral encoder wheel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2529807A (en) * | 2014-08-26 | 2016-03-09 | Skf Ab | Dynamic radial seal |
| US10054229B2 (en) | 2014-08-26 | 2018-08-21 | Aktiebolaget Skf | Dynamic radial seal |
| CN109210087A (en) * | 2017-07-07 | 2019-01-15 | 斯凯孚公司 | Sealing device for rolling bearing |
| CN109210087B (en) * | 2017-07-07 | 2022-01-04 | 斯凯孚公司 | Sealing device for a rolling bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008030710A1 (en) | 2009-12-31 |
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