WO2015127912A1 - Rolling element bearing comprising a seal - Google Patents

Rolling element bearing comprising a seal Download PDF

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Publication number
WO2015127912A1
WO2015127912A1 PCT/DE2014/200618 DE2014200618W WO2015127912A1 WO 2015127912 A1 WO2015127912 A1 WO 2015127912A1 DE 2014200618 W DE2014200618 W DE 2014200618W WO 2015127912 A1 WO2015127912 A1 WO 2015127912A1
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WO
WIPO (PCT)
Prior art keywords
seal
bearing
rolling
rolling bearing
ring
Prior art date
Application number
PCT/DE2014/200618
Other languages
German (de)
French (fr)
Inventor
Tiago Ferreira
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2015127912A1 publication Critical patent/WO2015127912A1/en

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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
    • 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
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16C33/7843—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 single annular sealing disc
    • F16C33/7846—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 single annular sealing disc with a gap between the annular disc and the inner race
    • F16C33/785—Bearing shields made of sheet metal
    • 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
    • F16J15/3268—Mounting of sealing rings
    • F16J15/3276—Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
    • 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
    • F16C33/7843—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 single annular sealing disc
    • F16C33/7853—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 single annular sealing disc with one or more sealing lips to contact the inner race

Definitions

  • the invention relates to a rolling bearing with two bearing rings arranged coaxially to one another with rolling elements rolling off between them in a radial gap and a seal sealing the clearance on at least one end face of the rolling bearing to the outside.
  • the object of the invention is the advantageous development of a rolling bearing with a simple to produce rotationally fixed connection of a seal to a bearing ring.
  • the proposed rolling bearing contains two coaxially arranged bearing rings in the form of a one- or multi-part outer ring and a single or multi-part inner ring in the form of a deep groove ball bearing, angular contact ball bearing, cylindrical roller bearing, tapered roller bearing, roller bearing, needle roller bearing and the like.
  • Rolling bodies roll on single or multi-row raceways between the bearing rings, so that between the races on one or both end faces an outwardly open radial clearance is provided between the races.
  • On at least one end face of the rolling bearing is provided for protection against, for example, from the outside penetrating water, dirt such as dust or the like, a sealing gasket to the outside.
  • the seal against one of the bearing rings by means of distributed on a circumference of the seal elastic teeth on a counter-profile of the bearing ring captive and rotatably locked. In this way, a circumferentially constant fastening force be achieved so that no fastening forces act on the bearing ring, which adversely affect the roundness of the bearing ring.
  • the seal may be arranged on a bearing ring formed as an inner ring and has for this purpose the teeth on the inner circumference of the seal.
  • the seal is arranged on a bearing ring designed as an outer ring. In this case, the seal on the circumferentially distributed teeth on the outer circumference.
  • the seal is applied according to a preferred embodiment of an axial bearing surface of a bearing ring as outer ring.
  • the preferably over the circumference of the circumference circumferentially arranged teeth are hereby folded radially outward.
  • the mating profile of the outer ring is formed from an axial, radially enlarged undercut in an axially surrounding the seal region of the outer ring.
  • a seal can be connected to a corresponding undercut of an inner ring.
  • the seal may be extended axially outwardly in a region of the gap. Preferably, this extension is aligned with the axial end-side termination as the end face of the outer ring, so that a substantially planar end face of the rolling bearing is achieved.
  • the seal can be made of plastic, for example by means of an injection molding process, advantageously make the advantages of the proposed seal in particular in the essential Stiffer trained seals made of metal noticeable.
  • a seal may be made of sheet metal, for example stamped and formed, for example, deep-drawn or formed in a die formed.
  • the seal may be annular and be sealed relative to the other, radially opposite bearing ring, for example, the inner ring.
  • the seal can be made by means of a simple or labyrinth-shaped air gap in relation to the other bearing ring or by means of a dynamic seal.
  • the dynamic seal is preferably formed by means of at least one sealing lip.
  • polymeric sealants such as rubber, rubber or the like, felt and fibrous or the like may alternatively or additionally form the dynamic seal in another form.
  • the seal when the rolling bearing is received by a final shaft or axle, the seal can form a cover which completely seals off the rolling bearing at one end, so that the complete inner ring is completely covered at one end face of the rolling bearing, as in the case of wheel bearings, for example ,
  • a correspondingly annular seal may be provided on the opposite side. It is understood that the interspace sealing annular seals can be provided on continuous shafts or axles on both end sides of the rolling bearing.
  • the proposed designed as an annular seal or as a lid seal can be arranged on the rotating bearing ring or in a preferred manner on the stationary bearing ring.
  • FIG. 2 shows a 3D partial view of the roller bearing of FIG. 1,
  • Figure 3 is a partial view of the rolling bearing of Figures 1 and 2 and
  • Figure 4 is a partial 3D view of the seal of the rolling bearing of the figures
  • the bearing rings 2, 3 are arranged coaxially to each other about the axis of rotation of the rotating bearing ring 3. Between the bearing rings 2, 3 roll on corresponding raceways rolling elements 4 from. Between the bearing rings 2, 3, the radial gap 5, which is sealed with the seal 6 is formed. The seal 6 is held against rotation on the bearing ring 2 and secured against loss, and seals against the bearing ring 3 in a manner not shown by means of an air gap or a dynamic seal.
  • the fastening of the seal 6, preferably made of metal, to the bearing ring 2 takes place by snap-fastening or latching.
  • teeth 7 which are preferably distributed over the circumference are preferably provided on the outer circumference of the seal 6.
  • the bearing ring 2 has the radially enlarged undercut 9 on an axially enlarged and the seal 6 radially overlapping section 8. Axially in the direction of rolling elements and thus spaced from the end face of the bearing ring 2, the bearing ring on the contact surface 10.
  • the seal 6 is pressed against the contact surface.
  • the elastically formed teeth 7 are clamped inwardly on the inboard 1 1 of the undercut 9 and snap when the seal 6 abuts against the contact surface 10 in the undercut 9 and become distorted with it.
  • the seal 6 is thus axially positively and rotatably received on the bearing ring 2. Due to the elastic tension of the individual teeth 7 with the undercut results in a compensation of manufacturing tolerances, so that on the bearing ring 2, if necessary, due to the rigidity of the seal 6 and tolerance-based Unrundario deformation of the bearing ring is avoided.
  • Figure 4 shows a detail of the seal 6 of the rolling bearing of Figures 1 to 3 in a 3D view.
  • the circumferentially arranged without gaps teeth 7 sit on an axially opposite to the bearing surface 10 of the bearing ring 2 ( Figure 1) applied sealing portion 12 conically radially outwardly adjacent toothing portion 13, so that by means of the resulting insertion chamfer assembly of the seal on the inboard 1 1 ( Figure 1) is facilitated.

Abstract

The invention relates to a rolling element bearing (1) comprising two coaxial races (2, 3) that contain rolling elements (4) which roll between the races in a radial gap (5), and comprising a seal (6) which seals the gap (5) from the outside on at least one end face of the rolling element bearing (1). In order to connect the seal (6) in a simple and durable manner to one of the races (2), the seal (6) grips a mating profile of one of the races (2) by means of elastic teeth (7) that are distributed along the circumference of the seal (6) in such a way that the seal (6) is non-releasably secured to and rotates along with said race (2).

Description

Bezeichnung der Erfindung  Name of the invention
Wälzlager mit Dichtung Rolling bearing with seal
Beschreibung description
Gebiet der Erfindung Field of the invention
Die Erfindung betrifft ein Wälzlager mit zwei koaxial zueinander angeordneten Lagerringen mit zwischen diesen in einem radialen Zwischenraum abwälzenden Wälzkörpern und einer den Zwischenraum an zumindest einer Stirnseite des Wälzlagers nach außen abdichtenden Dichtung. The invention relates to a rolling bearing with two bearing rings arranged coaxially to one another with rolling elements rolling off between them in a radial gap and a seal sealing the clearance on at least one end face of the rolling bearing to the outside.
Hintergrund der Erfindung Gattungsgemäße Wälzlager mit zwei zueinander als Außen- und Innenring ausgebildeten Lagerringen und zwischen diesen auf entsprechenden Laufbahnen abwälzenden Wälzkörpern sind hinreichend bekannt. Zur Abdichtung eines radialen Zwischenraums der Lagerringe nach außen sind verschiedene Formen von Dichtungen bekannt. Beispielsweise ist aus der DE 10 2012 206 892 A1 eine als Dichtscheibe gegenüber beiden Lagerringen abdichtende Dichtscheibe bekannt, die an dem Außenring mittels einer verdrehgesicherten Bajonettverbindung aufgenommen ist. Aus der DE 10 2010 053 859 A1 ist eine zwischen den beiden Lagerringen angeordnete Dichtscheibe aus Kunststoff bekannt, die mittels eines Außenumfangs an einem Hinterschnitt des Außenrings verschnappt ist. Aus der DE 10 2009 025 130 A1 ist eine dynamische Dichtung bekannt, die an einem Lagerring mittels einer Dichtlippe abdichtet und auf der gegenüberliegenden Seite mit- tels einer Presspassung mit dem anderen Lagerring drehfest verbunden ist. Schließlich ist aus der DE 10 2006 040 776 A1 eine Dichtung bekannt, die als deckeiförmiges Scheibenteil die gesamte Stirnfläche des Wälzlagers abdeckt. BACKGROUND OF THE INVENTION [0002] Generic rolling bearings having two bearing rings formed as outer and inner rings relative to each other and rolling elements rolling on respective raceways are well known. For sealing a radial clearance of the bearing rings to the outside various forms of seals are known. For example, from DE 10 2012 206 892 A1 a sealing disc as a sealing against two bearing rings sealing disc is known, which is accommodated on the outer ring by means of a twist-secured bayonet connection. From DE 10 2010 053 859 A1 a arranged between the two bearing rings sealing disc made of plastic is known, which is snapped by means of an outer periphery of an undercut of the outer ring. From DE 10 2009 025 130 A1 a dynamic seal is known which seals on a bearing ring by means of a sealing lip and on the opposite side mit- Tels a press fit with the other bearing ring is rotatably connected. Finally, from DE 10 2006 040 776 A1 a seal is known, which covers the entire end face of the rolling bearing as a ceiling-shaped disk part.
Aufgabe der Erfindung Object of the invention
Aufgabe der Erfindung ist die vorteilhafte Weiterbildung eines Wälzlagers mit einer einfach herzustellenden drehfesten Anbindung einer Dichtung an einen Lagerring. The object of the invention is the advantageous development of a rolling bearing with a simple to produce rotationally fixed connection of a seal to a bearing ring.
Allgemeine Beschreibung der Erfindung General description of the invention
Die Aufgabe wird durch den Gegenstand des Anspruchs 1 gelöst, die von dem Anspruch 1 abhängigen Ansprüche geben vorteilhafte Ausführungsformen des Gegenstands des Anspruchs 1 wieder. Das vorgeschlagene Wälzlager enthält zwei koaxial zueinander angeordnete Lagerringe in Form eines ein- oder mehrteiligen Außenrings und eines ein- oder mehrteiligen Innenrings in Form eines Rillenkugellagers, Schrägkugellagers, Zylinderrollenlagers, Kegelrollenlagers, Tonnenrollenlagers, Nadellagers und dergleichen. Auf ein- oder mehrreihigen Laufbahnen wälzen dabei zwischen den Lagerringen Wälzkörper ab, so dass zwischen den Laufringen an einer oder beiden Stirnseiten ein nach außen offener radialer Zwischenraum zwischen den Laufringen vorgesehen ist. An zumindest einer Stirnseite des Wälzlagers ist zum Schutz beispielsweise gegen von außen eindringendes Wasser, Verschmutzungen wie Staub oder dergleichen eine nach außen abdichtende Dichtung vorgesehen. Die Dichtung ist gegenüber einem der Lagerringe mittels an einem Umfang der Dichtung verteilter elastischer Zähne an einem Gegenprofil des Lagerrings verliersicher und drehfest verkrallt. Auf diese Weise kann eine umlaufend konstante Befestigungskraft erzielt werden, so dass auf den Lagerring keine Befestigungskräfte wirken, die die Rundheit des Lagerrings negativ beeinflussen. The object is solved by the subject matter of claim 1, the dependent of the claim 1 claims give advantageous embodiments of the subject matter of claim 1 again. The proposed rolling bearing contains two coaxially arranged bearing rings in the form of a one- or multi-part outer ring and a single or multi-part inner ring in the form of a deep groove ball bearing, angular contact ball bearing, cylindrical roller bearing, tapered roller bearing, roller bearing, needle roller bearing and the like. Rolling bodies roll on single or multi-row raceways between the bearing rings, so that between the races on one or both end faces an outwardly open radial clearance is provided between the races. On at least one end face of the rolling bearing is provided for protection against, for example, from the outside penetrating water, dirt such as dust or the like, a sealing gasket to the outside. The seal against one of the bearing rings by means of distributed on a circumference of the seal elastic teeth on a counter-profile of the bearing ring captive and rotatably locked. In this way, a circumferentially constant fastening force be achieved so that no fastening forces act on the bearing ring, which adversely affect the roundness of the bearing ring.
Die Dichtung kann an einem als Innenring ausgebildeten Lagerring angeordnet sein und weist hierzu die Zähne am Innenumfang der Dichtung auf. In bevorzugter Weise ist die Dichtung jedoch an einem als Außenring ausgebildeten Lagerring angeordnet. Hierbei weist die Dichtung die über den Umfang verteilten Zähne an deren Außenumfang auf. The seal may be arranged on a bearing ring formed as an inner ring and has for this purpose the teeth on the inner circumference of the seal. Preferably, however, the seal is arranged on a bearing ring designed as an outer ring. In this case, the seal on the circumferentially distributed teeth on the outer circumference.
Die Dichtung ist gemäß einer bevorzugten Ausführungsform an einer axialen Anlagefläche des einen Lagerrings wie Außenring angelegt. Die über den Umfang bevorzugt lückenlos über den Umfang angeordneten Zähne sind hierbei nach radial außen umgelegt. Das Gegenprofil des Außenrings ist dabei aus einem axialen, radial erweiterten Hinterschnitt in einem axial die Dichtung umgreifenden Bereich des Außenrings gebildet. Durch die elasti- sehe Ausbildung der Zähne kann die Dichtung gegen die Anlagefläche ge- presst und die Zähne können in den Hinterschnitt unter elastischer Verformung zu einem kleineren Durchmesser in den Hinterschnitt eingeschnappt beziehungsweise eingerastet werden. Die Zähne bilden an dem Hinterschnitt einen axialen Formschluss mit dem Außenring und verkrallen sich beim Einschnappen mit dem Außenring, so dass eine verliersichere und drehfeste Aufnahme der Dichtung an dem Außenring erfolgt. In ähnlicher Weise kann eine Dichtung mit einem entsprechenden Hinterschnitt eines Innenrings verbunden werden. Um beispielsweise den Bauraum des Zwischenraums zu erweitern, kann die Dichtung in einem Bereich des Zwischenraums axial nach außen erweitert sein. Bevorzugt fluchtet diese Erweiterung mit dem axial endseitigen Ab- schluss wie Stirnfläche des Außenrings, so dass eine im Wesentlichen plane Stirnseite des Wälzlagers erzielt wird. The seal is applied according to a preferred embodiment of an axial bearing surface of a bearing ring as outer ring. The preferably over the circumference of the circumference circumferentially arranged teeth are hereby folded radially outward. The mating profile of the outer ring is formed from an axial, radially enlarged undercut in an axially surrounding the seal region of the outer ring. As a result of the elastic design of the teeth, the seal can be pressed against the contact surface and the teeth can be snapped or latched into the undercut with elastic deformation to a smaller diameter in the undercut. The teeth form on the undercut an axial positive engagement with the outer ring and digs when snapping with the outer ring, so that a captive and rotationally fixed receiving the seal is made on the outer ring. Similarly, a seal can be connected to a corresponding undercut of an inner ring. For example, to expand the space of the gap, the seal may be extended axially outwardly in a region of the gap. Preferably, this extension is aligned with the axial end-side termination as the end face of the outer ring, so that a substantially planar end face of the rolling bearing is achieved.
Die Dichtung kann aus Kunststoff beispielsweise mittels eines Spritzgussverfahrens hergestellt sein, in vorteilhafter Weise machen sich die Vorteile der vorgeschlagenen Dichtung insbesondere bei den wesentlich steifer ausgebildeten Dichtungen aus Metall bemerkbar. Eine derartige Dichtung kann aus Blech hergestellt, beispielsweise gestanzt und umformend, beispielsweise tiefgezogen oder in einer Matrize umgeformt hergestellt sein. The seal can be made of plastic, for example by means of an injection molding process, advantageously make the advantages of the proposed seal in particular in the essential Stiffer trained seals made of metal noticeable. Such a seal may be made of sheet metal, for example stamped and formed, for example, deep-drawn or formed in a die formed.
Die Dichtung kann ringförmig ausgebildet sein und gegenüber dem anderen, radial gegenüberliegenden Lagerring, beispielsweise dem Innenring abgedichtet sein. Die Abdichtung kann mittels eines einfachen oder labyrinthför- migen Luftspalts gegenüber dem anderen Lagerring oder mittels einer dy- namischen Dichtung erfolgen. Die dynamische Dichtung ist bevorzugt mittels zumindest einer Dichtlippe ausgebildet. Alternativ können polymere Dichtstoffe wie Kautschuk, Gummi oder dergleichen, Filz- und Faserstoffe oder dergleichen alternativ oder zusätzlich in anderer Form die dynamische Dichtung bilden. The seal may be annular and be sealed relative to the other, radially opposite bearing ring, for example, the inner ring. The seal can be made by means of a simple or labyrinth-shaped air gap in relation to the other bearing ring or by means of a dynamic seal. The dynamic seal is preferably formed by means of at least one sealing lip. Alternatively, polymeric sealants such as rubber, rubber or the like, felt and fibrous or the like may alternatively or additionally form the dynamic seal in another form.
Alternativ zu einer ringförmigen Dichtung kann bei Aufnahme des Wälzlagers an einer abschließenden Welle oder Achse die Dichtung einen das Wälzlager an einer Stirnseite vollständig abdichtenden Deckel bilden, so dass wie beispielsweise bei Radlagern neben dem Zwischenraum auch der komplette Innenring an einer Stirnseite des Wälzlagers vollständig abgedeckt ist. An der gegenüberliegenden Seite kann eine entsprechend ringförmig ausgebildete Dichtung vorgesehen sein. Es versteht sich, dass an durchgehenden Wellen oder Achsen an beiden Stirnseiten des Wälzlagers den Zwischenraum abdichtende ringförmige Dichtungen vorgesehen sein können. As an alternative to an annular seal, when the rolling bearing is received by a final shaft or axle, the seal can form a cover which completely seals off the rolling bearing at one end, so that the complete inner ring is completely covered at one end face of the rolling bearing, as in the case of wheel bearings, for example , On the opposite side, a correspondingly annular seal may be provided. It is understood that the interspace sealing annular seals can be provided on continuous shafts or axles on both end sides of the rolling bearing.
Desweiteren kann die vorgeschlagene als ringförmige Dichtung oder als Deckel ausgebildete Dichtung an dem drehenden Lagerring oder in bevorzugter Weise am stehenden Lagerring angeordnet sein.  Furthermore, the proposed designed as an annular seal or as a lid seal can be arranged on the rotating bearing ring or in a preferred manner on the stationary bearing ring.
Kurze Beschreibung der Figuren Brief description of the figures
Die Erfindung wird anhand des in den Figuren 1 bis 4 dargestellten Ausfüh- rungsbeispiels näher erläutert. Dabei zeigen: The invention will be described with reference to the embodiment illustrated in FIGS. explained in more detail. Showing:
Figur 1 einen Teilschnitt durch ein Wälzlager mit der vorgeschlagenen 1 shows a partial section through a rolling bearing with the proposed
Dichtung,  Poetry,
Figur 2 eine 3D-Teilansicht des Wälzlagers der Figur 1 , FIG. 2 shows a 3D partial view of the roller bearing of FIG. 1,
Figur 3 eine Teilansicht des Wälzlagers der Figuren 1 und 2 und Figure 3 is a partial view of the rolling bearing of Figures 1 and 2 and
Figur 4 eine 3D-Teilansicht der Dichtung des Wälzlagers der Figuren Figure 4 is a partial 3D view of the seal of the rolling bearing of the figures
2 bis 3.  2 to 3.
Ausführliche Beschreibung der Figuren Detailed description of the figures
Die Figur 1 zeigt einen Teilschnitt des Wälzlagers 1 mit dem stehenden, als Außenring ausgebildeten Lagerring 2 und dem nur angedeuteten, als Innenring ausgebildeten Lagerring 3. Die Lagerringe 2, 3 sind zueinander koaxial um die Drehachse des drehenden Lagerrings 3 angeordnet. Zwischen den Lagerringen 2, 3 wälzen auf entsprechenden Laufbahnen Wälzkörper 4 ab. Zwischen den Lagerringen 2, 3 bildet sich der radiale Zwischenraum 5, der mit der Dichtung 6 abgedichtet ist. Die Dichtung 6 ist an dem Lagerring 2 drehfest und verliergesichert aufgenommen und dichtet gegenüber dem Lagerring 3 in nicht dargestellter Weise mittels eines Luftspalts oder einer dy- namischen Dichtung ab. Die Befestigung der bevorzugt aus Metall hergestellten Dichtung 6 an dem Lagerring 2 erfolgt durch Verschnappen oder Verrasten. Hierzu sind an dem Außenumfang der Dichtung 6 bevorzugt lückenlos über den Umfang verteilte Zähne 7 vorgesehen. Der Lagerring 2 weist an einem axial erweiterten und die Dichtung 6 radial übergreifenden Abschnitt 8 den radial erweiterten Hinterschnitt 9 auf. Axial in Richtung Wälzkörper und damit von der Stirnseite des Lagerrings 2 beabstandet weist der Lagerring die Anlagefläche 10 auf. Zur Montage der Dichtung 6 wird die Dichtung 6 gegen die Anlagefläche gedrückt. Dabei werden die elastisch ausgebildeten Zähne 7 an dem Innenbord 1 1 des Hinterschnitts 9 nach innen verspannt und schnappen bei Anlage der Dichtung 6 an der Anlagefläche 10 in den Hinterschnitt 9 und verkral- len sich mit diesem unter Vorspannung. Die Dichtung 6 ist damit axial formschlüssig und drehfest an dem Lagerring 2 aufgenommen. Aufgrund der elastischen Verspannung der einzelnen Zähne 7 mit dem Hinterschnitt ergibt sich ein Ausgleich von Fertigungstoleranzen, so dass an dem Lagerring 2 gegebenenfalls aufgrund der Steifigkeit der Dichtung 6 und toleranzbeding- ten Unrundheiten eine Deformation des Lagerrings vermieden wird. 1 shows a partial section of the rolling bearing 1 with the standing, designed as an outer ring bearing ring 2 and only indicated, designed as an inner ring bearing ring 3. The bearing rings 2, 3 are arranged coaxially to each other about the axis of rotation of the rotating bearing ring 3. Between the bearing rings 2, 3 roll on corresponding raceways rolling elements 4 from. Between the bearing rings 2, 3, the radial gap 5, which is sealed with the seal 6 is formed. The seal 6 is held against rotation on the bearing ring 2 and secured against loss, and seals against the bearing ring 3 in a manner not shown by means of an air gap or a dynamic seal. The fastening of the seal 6, preferably made of metal, to the bearing ring 2 takes place by snap-fastening or latching. For this purpose, teeth 7 which are preferably distributed over the circumference are preferably provided on the outer circumference of the seal 6. The bearing ring 2 has the radially enlarged undercut 9 on an axially enlarged and the seal 6 radially overlapping section 8. Axially in the direction of rolling elements and thus spaced from the end face of the bearing ring 2, the bearing ring on the contact surface 10. To mount the seal 6, the seal 6 is pressed against the contact surface. In this case, the elastically formed teeth 7 are clamped inwardly on the inboard 1 1 of the undercut 9 and snap when the seal 6 abuts against the contact surface 10 in the undercut 9 and become distorted with it. The seal 6 is thus axially positively and rotatably received on the bearing ring 2. Due to the elastic tension of the individual teeth 7 with the undercut results in a compensation of manufacturing tolerances, so that on the bearing ring 2, if necessary, due to the rigidity of the seal 6 and tolerance-based Unrundheiten deformation of the bearing ring is avoided.
Zur Erweiterung des Zwischenraums 5 ist die Dichtung 6 auf radialer Höhe des Zwischenraums 5 axial nach außen erweitert. Die Figur 2 zeigt einen Ausschnitt des Wälzlagers 1 der Figur 1 in SD- Ansicht mit dem Lagerring 2 mit der gefügten Dichtung 6 mit den im Hinterschnitt 9 verkrallten und den Innenbord 1 1 radial hintergreifenden Zähnen 7. Die Figur 3 zeigt das Wälzlager 1 der Figuren 1 und 2 in Teilansicht mit dem Lagerring 2 und der mittels der Zähne 7 radial elastisch ausgebildeten Ver- bindung zwischen der Dichtung 6 und dem Lagerring 2. To widen the gap 5, the seal 6 is extended radially outward at the radial height of the intermediate space 5. 2 shows a section of the rolling bearing 1 of Figure 1 in SD view with the bearing ring 2 with the joint seal 6 with the verkrallten in the undercut 9 and the inboard 1 1 radially behind engaging teeth 7. Figure 3 shows the rolling bearing 1 of the figures 1 and 2 in partial view with the bearing ring 2 and the means of the teeth 7 radially elastically formed connection between the seal 6 and the bearing ring. 2
Die Figur 4 zeigt ausschnittsweise die Dichtung 6 des Wälzlagers der Figuren 1 bis 3 in 3D-Ansicht. Die über den Umfang lückenlos angeordneten Zähne 7 sitzen auf einem axial gegenüber dem an der Anlagefläche 10 des Lagerrings 2 (Figur 1 ) angelegten Dichtungsabschnitt 12 konisch nach radial außen anliegenden Verzahnungsabschnitt 13, so dass mittels der hierdurch entstehenden Einführschräge die Montage der Dichtung an dem Innenbord 1 1 (Figur 1 ) erleichtert wird. Bezugszeichenliste Wälzlager Figure 4 shows a detail of the seal 6 of the rolling bearing of Figures 1 to 3 in a 3D view. The circumferentially arranged without gaps teeth 7 sit on an axially opposite to the bearing surface 10 of the bearing ring 2 (Figure 1) applied sealing portion 12 conically radially outwardly adjacent toothing portion 13, so that by means of the resulting insertion chamfer assembly of the seal on the inboard 1 1 (Figure 1) is facilitated. Rolling stock
Lagerring bearing ring
Lagerring bearing ring
Wälzkörper rolling elements
Zwischenraum gap
Dichtung poetry
Zahn tooth
Abschnitt section
Hinterschnitt undercut
Anlagefläche contact surface
Innenbord inboard
Dichtungsabschnitt sealing section
Verzahnungsabschnitt toothed section

Claims

Patentansprüche claims
1 . Wälzlager (1 ) mit zwei koaxial zueinander angeordneten Lagerringen (2, 3) mit zwischen diesen in einem radialen Zwischenraum (5) abwälzenden Wälzkörpern (4) und einer den Zwischenraum (5) an zumindest einer Stirnseite des Wälzlagers (1 ) nach außen abdichtenden Dichtung (6), dadurch gekennzeichnet, dass die Dichtung (6) gegen- über einem der Lagerringe (2) mittels an einem Umfang der Dichtung1 . Rolling bearing (1) with two bearing rings (2, 3) arranged coaxially with one another with rolling elements (4) rolling in between them in a radial intermediate space (5) and a seal sealing off the gap (5) on at least one end face of the rolling bearing (1) (6), characterized in that the seal (6) relative to one of the bearing rings (2) by means of at a circumference of the seal
(6) verteilter elastischer Zähne (7) an einem Gegenprofil des Lagerrings (2) verliersicher und drehfest verkrallt ist. (6) distributed elastic teeth (7) on a counter-profile of the bearing ring (2) captive and is locked against rotation.
2. Wälzlager (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die Dichtung (6) an einer axialen Anlagefläche (10) des einen Lagerrings2. Rolling bearing (1) according to claim 1, characterized in that the seal (6) on an axial bearing surface (10) of a bearing ring
(2) angelegt ist, die Zähne (7) nach außen umgelegt sind und das Gegenprofil aus einem mit einem an einem die Anlagefläche (10) übergreifenden Abschnitt (8) des einen Lagerrings (2) angeordneten Hinterschnitt (9) gebildet ist. (2) is applied, the teeth (7) are folded outwards and the mating profile of one with a on the contact surface (10) cross-section (8) of a bearing ring (2) arranged undercut (9) is formed.
3. Wälzlager (1 ) nach Anspruch 2, dadurch gekennzeichnet, dass die Dichtung (6) in einem Bereich des Zwischenraums (5) axial nach außen erweitert ist. 4. Wälzlager (1 ) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Dichtung (6) aus Metall hergestellt ist. 3. rolling bearing (1) according to claim 2, characterized in that the seal (6) in a region of the intermediate space (5) is expanded axially outwards. 4. Rolling bearing (1) according to one of claims 1 to 3, characterized in that the seal (6) is made of metal.
5. Wälzlager (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Dichtung (6) ringförmig ausgebildet ist und gegen- über dem anderen, radial gegenüberliegenden Lagerring (3) abgedichtet ist. Wälzlager (1 ) nach Anspruch 5, dadurch gekennzeichnet, dass die Dichtung (6) mittels eines Luftspalts gegenüber dem anderen Lagerring (3) abgedichtet ist. 5. Rolling bearing (1) according to one of claims 1 to 4, characterized in that the seal (6) is annular and is sealed against the other, radially opposite bearing ring (3). Rolling bearing (1) according to claim 5, characterized in that the seal (6) is sealed by means of an air gap relative to the other bearing ring (3).
Wälzlager nach Anspruch 5, dadurch gekennzeichnet, dass die Dichtung mittels zumindest einer Dichtlippe eine dynamische Dichtung gegenüber dem anderen Lagerring bildet. Rolling bearing according to claim 5, characterized in that the seal by means of at least one sealing lip forms a dynamic seal against the other bearing ring.
Wälzlager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Dichtung einen das Wälzlager an einer Stirnseite vollständig abdichtenden Deckel bildet. Rolling bearing according to one of claims 1 to 4, characterized in that the seal forms a rolling bearing on a front side completely sealing lid.
Wälzlager (1 ) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Dichtung (6) an einem als Außenring ausgebildeten Lagerring (2) angeordnet ist. Rolling bearing (1) according to one of claims 1 to 8, characterized in that the seal (6) on a formed as an outer ring bearing ring (2) is arranged.
10. Wälzlager (1 ) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Dichtung (6) an einem stehenden Lagerring (2) angeordnet ist. 10. Rolling bearing (1) according to one of claims 1 to 9, characterized in that the seal (6) is arranged on a stationary bearing ring (2).
PCT/DE2014/200618 2014-02-27 2014-11-04 Rolling element bearing comprising a seal WO2015127912A1 (en)

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Application Number Priority Date Filing Date Title
DE102014203520.1 2014-02-27
DE102014203520.1A DE102014203520A1 (en) 2014-02-27 2014-02-27 Rolling bearing with seal

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022111751A1 (en) 2020-11-24 2022-06-02 Schaeffler Technologies AG & Co. KG Device and method for installing a seal on a bearing ring of a rolling bearing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015224042A1 (en) 2015-12-02 2017-06-08 Schaeffler Technologies AG & Co. KG Conductive gasket with metallic structures
DE102016220300A1 (en) 2016-10-18 2018-04-19 Schaeffler Technologies AG & Co. KG Conductive gasket with metallic structures
IT202000028349A1 (en) * 2020-11-25 2022-05-25 Skf Ab BEARING UNIT FOR MARBLE CUTTING MACHINES WITH OPTIMIZED SEAL ANCHORING

Citations (7)

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Publication number Priority date Publication date Assignee Title
US2718441A (en) * 1954-01-21 1955-09-20 Mcgill Mfg Company Inc Self-contained seal and bearing assembly
AT289476B (en) * 1969-04-17 1971-04-26 Skf Svenska Kullagerfab Ab Sealing device for rolling bearings and method for assembling this device
JP2003287041A (en) * 2002-03-29 2003-10-10 Nsk Ltd Shield plate and rolling bearing
DE102006040776A1 (en) 2006-08-31 2008-03-06 Schaeffler Kg Roller bearing with wheel bearing for motor vehicles, has ring shaped sealing element is arranged laterally to rolling body row and seat is conicallly formed for cylindrical part of sealing element
DE102009025130A1 (en) 2009-06-17 2010-12-23 Schaeffler Technologies Gmbh & Co. Kg Sealing element for sealing bearing space outer ring and inner ring of roller bearing, is designed as sealing and centrifugal disk such that primary sealing and pre sealing are caused by individual component
DE102010053859A1 (en) 2010-12-08 2012-06-14 Schaeffler Technologies Gmbh & Co. Kg Storage facility
DE102012206892A1 (en) 2012-04-26 2013-10-31 Schaeffler Technologies AG & Co. KG Roller bearing i.e. radial-spherical roller bearing, has sealing disks connected with outer ring according to type of bayonet connection by partially circular holding projections, where holes are directly provided at holding projections

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718441A (en) * 1954-01-21 1955-09-20 Mcgill Mfg Company Inc Self-contained seal and bearing assembly
AT289476B (en) * 1969-04-17 1971-04-26 Skf Svenska Kullagerfab Ab Sealing device for rolling bearings and method for assembling this device
JP2003287041A (en) * 2002-03-29 2003-10-10 Nsk Ltd Shield plate and rolling bearing
DE102006040776A1 (en) 2006-08-31 2008-03-06 Schaeffler Kg Roller bearing with wheel bearing for motor vehicles, has ring shaped sealing element is arranged laterally to rolling body row and seat is conicallly formed for cylindrical part of sealing element
DE102009025130A1 (en) 2009-06-17 2010-12-23 Schaeffler Technologies Gmbh & Co. Kg Sealing element for sealing bearing space outer ring and inner ring of roller bearing, is designed as sealing and centrifugal disk such that primary sealing and pre sealing are caused by individual component
DE102010053859A1 (en) 2010-12-08 2012-06-14 Schaeffler Technologies Gmbh & Co. Kg Storage facility
DE102012206892A1 (en) 2012-04-26 2013-10-31 Schaeffler Technologies AG & Co. KG Roller bearing i.e. radial-spherical roller bearing, has sealing disks connected with outer ring according to type of bayonet connection by partially circular holding projections, where holes are directly provided at holding projections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022111751A1 (en) 2020-11-24 2022-06-02 Schaeffler Technologies AG & Co. KG Device and method for installing a seal on a bearing ring of a rolling bearing

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