DE102009053826A1 - Cover disk i.e. metal cover disk, for sealing roller bearing against contamination and lubricant discharge, has elastomer molded at outer edge of disk, where disk is mounted by force-fitting in flat-sided groove at roller bearing outer ring - Google Patents

Cover disk i.e. metal cover disk, for sealing roller bearing against contamination and lubricant discharge, has elastomer molded at outer edge of disk, where disk is mounted by force-fitting in flat-sided groove at roller bearing outer ring Download PDF

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Publication number
DE102009053826A1
DE102009053826A1 DE102009053826A DE102009053826A DE102009053826A1 DE 102009053826 A1 DE102009053826 A1 DE 102009053826A1 DE 102009053826 A DE102009053826 A DE 102009053826A DE 102009053826 A DE102009053826 A DE 102009053826A DE 102009053826 A1 DE102009053826 A1 DE 102009053826A1
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Germany
Prior art keywords
disk
roller bearing
rubber
elastomer
outer edge
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
Application number
DE102009053826A
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German (de)
Inventor
Ferdinand Wiedmann
Sun Lie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CW BEARING GmbH
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CW BEARING GmbH
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Publication date
Application filed by CW BEARING GmbH filed Critical CW BEARING GmbH
Priority to DE102009053826A priority Critical patent/DE102009053826A1/en
Publication of DE102009053826A1 publication Critical patent/DE102009053826A1/en
Ceased legal-status Critical Current

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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
    • F16C33/784—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
    • 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

Abstract

The disk has a circular elastomer molded at an outer edge of the disk. The disk is mounted by force-fitting in a flat-sided groove at a roller bearing outer ring. The form of the elastomer on a side to be pressed exhibits a slip radius.

Description

Die meisten Wälzlager werden mit Deckscheiben hergestellt.Most rolling bearings are manufactured with shields.

Die Deckscheibe hat die Funktion zum einem das Eindringen von Verschmutzungen und sonstigen Partikeln in das Wälzlager zu verhindern, zum anderen soll die Deckscheibe den Schmierstoff mit dem das Kugellager befüllt ist im Inneren des Wälzlagers halten und das Austreten aus dem Wälzlager verhindern.The cover plate has the function to prevent one of the penetration of dirt and other particles in the rolling bearing, on the other hand, the cover plate is the lubricant with which the ball bearing is filled to keep inside the bearing and prevent leakage from the bearing.

Die Deckscheiben werden mehrheitlich am Außenring des Wälzlagers befestigt. Die Befestigung erfolgt hierbei entweder durch Verstemmung des Lagerschildes in einer Nute des Außenringes oder durch einen Sicherungsring, der ebenfalls in einer Nute des Außenringes einrastet.The cover discs are mostly attached to the outer ring of the bearing. The attachment takes place here either by caulking of the bearing plate in a groove of the outer ring or by a retaining ring which also engages in a groove of the outer ring.

Diese Befestigungsverfahren der Deckscheibe an den Wälzlageraußenring haben den Nachteil, dass sie sehr häufig zu einer Verformung des Außenringes führen.These attachment methods of the cover plate to the roller bearing outer ring have the disadvantage that they very often lead to a deformation of the outer ring.

Dies ist bei Präzisionslager nicht erwünscht. Alternative Befestigungsverfahren wie das Verkleben und Verschweißen mit Hilfe eines Lesers sind in der Massenfertigung nicht immer wirtschaftlich und mit Fertigungsrisiken behaftet. Gummierte Deckscheiben und Kunststoffdeckscheiben, die als Alternative eingesetzt werden, haben oft den Nachteil, dass sie im Betriebszustand und bei der Montage des Wälzlagers leichter beschädigt werden können und nicht die Festigkeit einer Metallscheibe aufweisen.This is not desirable for precision bearings. Alternative fastening methods such as bonding and welding with the help of a reader are not always economical and involve manufacturing risks in mass production. Rubberized shields and plastic covers, which are used as an alternative, often have the disadvantage that they can be easily damaged in the operating state and during assembly of the bearing and do not have the strength of a metal disc.

Die erfindungsgemäße Deckscheibe weist die vorgenannten Nachteile nicht mehr auf. Die erfindungsgemäße Deckscheibe hat an ihren äußeren Umfang [1] ein Elastomer anvulkanisiert. Beim Einpressen dieser Deckscheibe in ein Wälzlager welcher am Außenring planseitig eine entsprechend ausgeformte Nute hat, schnappt die erfindungsgemäße Deckscheibe durch elastische Verformung des umfänglichen Elastomehrringes in die Nute des Außenringes ein. [2]The cover plate according to the invention no longer has the aforementioned disadvantages. The cover plate according to the invention has on its outer circumference 1 ] vulcanized an elastomer. When pressing this cover plate in a rolling bearing which has a correspondingly shaped groove on the outer side of the plan, the cover plate according to the invention snaps into the groove of the outer ring by elastic deformation of the circumferential Elastomehrringes. [ 2 ]

Das Elastomer nimmt hierbei im eingebauten Zustand die Verformungskräfte auf, so das sich der Außenring des Wälzlagers nicht verformt. Darüber hinaus dichtet das verspannte Elastomer, dass sich nun zwischen der Deckscheibe und der Nute des Außenringes befindet, den Innenraum des Wälzlagers an der eingepressten Stelle hermetisch ab. Durch diese Deckscheibe wird außerdem durch die abdichtende Funktion des Elastomers der Schmierstoffaustritt bei Außenringrotation des Wälzlagers sicher verhindert.The elastomer absorbs the deformation forces in the installed state, so that the outer ring of the rolling bearing does not deform. In addition, the strained elastomer, which is now located between the cover plate and the groove of the outer ring, hermetically seals the interior of the roller bearing at the pressed-in point. Through this cover disc is also reliably prevented by the sealing function of the elastomer, the lubricant outlet during outer ring rotation of the bearing.

Bei der Formgestaltung des Elastomers ist darauf zu achten, dass das Elastomer die äußere Kante der Metalldeckscheibe umschließt. Des weiteren ist darauf zu achten, dass das Elastomer auf der einzupressenden Seite in seiner Form mit einem Schlupfradius versehen wird. [3]When designing the elastomer, make sure that the elastomer surrounds the outer edge of the metal cover disc. Furthermore, it must be ensured that the elastomer on the side to be pressed is provided in its shape with a slip radius. [ 3 ]

Um die Deckscheibe beim Einpressen steif zuhalten, ist es vorteilhaft, den äußeren Umfang der Metalldeckscheibe abzuwinkeln. Der innere Umfang an der Bohrung der Metalldeckscheibe kann abgewinkelt [4] oder gerade [5] ausgeführt werden.In order to keep the cover disc stiff when pressed in, it is advantageous to angle the outer circumference of the metal cover disc. The inner circumference at the hole of the metal cover disc can be angled [ 4 ] or even [ 5 ] are executed.

Bei der erfindungsgemäßen Deckscheibe können je nach späteren Einsatzbedingungen des Wälzlagers unterschiedliche technische Elastomere zum Einsatz kommen. Als Basiselastomere eignen sich:
Enthylen-Prophylen-Dien-Kautschuk (EPDM), Silikon-Kautschuk (VMQ), Fluorsilikon-Kautschuk (FVMQ), Flurkautschuk/Viton (VKM), Aflas (TFW/P), Natur-Kautschuk (NR), Polyurethan-Kautschuk (AU), Vamac (EAM), Acrylat-Kautschuk (ACM), Nitril-Butadie (NBR), Chloropren (CR), Perfluorelastomer (FFKM), Hydriertes NBR (NHBR).In the case of the cover disk according to the invention, different technical elastomers can be used depending on the subsequent conditions of use of the rolling bearing. Suitable base elastomers are:
Enthylene propylene diene rubber (EPDM), silicone rubber (VMQ), fluorosilicone rubber (FVMQ), fluorinated rubber / Viton (VKM), Aflas (TFW / P), natural rubber (NR), polyurethane rubber ( AU), Vamac (EAM), acrylate rubber (ACM), nitrile butadiene (NBR), chloroprene (CR), perfluoroelastomer (FFKM), hydrogenated NBR (NHBR).

Claims (5)

Deckscheibe zum Abdichten eines Wälzlagers gegen Verschmutzung und Schmierstoffaustritt dadurch gekennzeichnet, dass am äußeren Rand der Metalldeckscheibe ein ringförmiges Elastomer anvulkanisiert ist. [3]Cover plate for sealing a rolling bearing against contamination and lubricant leakage, characterized in that at the outer edge of the metal cover plate, an annular elastomer is vulcanized. [ 3 ] Wie Anspruch 1, zusätzlich dadurch gekennzeichnet, dass die Deckscheibe durch einpressen, in eine planseitig angebrachte Nute am Wälzlagerausenring, montiert wird. [1 und 2]As claim 1, additionally characterized in that the cover plate is pressed by pressing, in a plane-mounted groove on Wälzlagerausenring mounted. [ 1 and 2 ] Wie Anspruch 1 zusätzlich dadurch gekennzeichnet, dass die äußere Kante des Umfangs der Deckscheibe vom Elastomer umschlossen ist. [3]As claim 1 additionally characterized in that the outer edge of the circumference of the cover plate is enclosed by the elastomer. [ 3 ] Wie Anspruch 1 zusätzlich dadurch gekennzeichnet, dass die Form des Elastomers auf der einzupressenden Seite einen Schlupfradius aufweist. [3]As claim 1 additionally characterized in that the shape of the elastomer on the side to be pressed has a slip radius. [ 3 ] Wie Anspruch 1 zusätzlich dadurch gekennzeichnet, dass das Elastomer aus einem der nachgenannten Materialien besteht: Enthylen-Prophylen-Dien-Kautschuk (EPDM), Silikon-Kautschuk (VMQ), Fluorsilikon-Kautschuk (FVMQ), Flurkautschuk/Viton (VKM), Aflas (TFW/P), Natur-Kautschuk (NR), Polyurethan-Kautschuk (AU), Vamac (EAM), Acrylat-Kautschuk (ACM), Nitril-Butadie (NBR), Chloropren (CR), Perfluorelastomer (FFKM), Hydriertes NBR (NHBR).As claimed in claim 1, further characterized in that the elastomer consists of one of the following materials: Enthylene-propylene-diene rubber (EPDM), silicone rubber (VMQ), fluorosilicone rubber (FVMQ), fluorinated rubber / Viton (VKM), Aflas (TFW / P), natural rubber (NR), polyurethane rubber (AU), Vamac (EAM), acrylate rubber (ACM), nitrile Butadiene (NBR), chloroprene (CR), perfluoroelastomer (FFKM), hydrogenated NBR (NHBR).
DE102009053826A 2009-11-18 2009-11-18 Cover disk i.e. metal cover disk, for sealing roller bearing against contamination and lubricant discharge, has elastomer molded at outer edge of disk, where disk is mounted by force-fitting in flat-sided groove at roller bearing outer ring Ceased DE102009053826A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102009053826A DE102009053826A1 (en) 2009-11-18 2009-11-18 Cover disk i.e. metal cover disk, for sealing roller bearing against contamination and lubricant discharge, has elastomer molded at outer edge of disk, where disk is mounted by force-fitting in flat-sided groove at roller bearing outer ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009053826A DE102009053826A1 (en) 2009-11-18 2009-11-18 Cover disk i.e. metal cover disk, for sealing roller bearing against contamination and lubricant discharge, has elastomer molded at outer edge of disk, where disk is mounted by force-fitting in flat-sided groove at roller bearing outer ring

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102927133A (en) * 2012-11-06 2013-02-13 浙江大学 Rolling bearing with particle lubrication performance
DE102011053483A1 (en) 2011-09-10 2013-03-14 Wälzlagertechnik GmbH Method for mounting cover disk at roller bearing, involves arranging concentrically cover disk between outer surface of inner ring and inner surface of outer ring
DE102014112561A1 (en) * 2014-09-01 2016-03-03 Cw Bearing Gmbh Rolling bearings with electrical bypass for rolling elements

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0541036A2 (en) * 1991-11-06 1993-05-12 Skf Industrie S.P.A. Sealing shield, particularly for rolling bearings
DE10234935A1 (en) * 2001-07-31 2003-05-15 Nsk Ltd Angular contact ball bearings and spindle device
US20070154124A1 (en) * 2004-02-18 2007-07-05 Hiromi Inoue Rolling bearing for a supercharger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0541036A2 (en) * 1991-11-06 1993-05-12 Skf Industrie S.P.A. Sealing shield, particularly for rolling bearings
DE10234935A1 (en) * 2001-07-31 2003-05-15 Nsk Ltd Angular contact ball bearings and spindle device
US20070154124A1 (en) * 2004-02-18 2007-07-05 Hiromi Inoue Rolling bearing for a supercharger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011053483A1 (en) 2011-09-10 2013-03-14 Wälzlagertechnik GmbH Method for mounting cover disk at roller bearing, involves arranging concentrically cover disk between outer surface of inner ring and inner surface of outer ring
CN102927133A (en) * 2012-11-06 2013-02-13 浙江大学 Rolling bearing with particle lubrication performance
DE102014112561A1 (en) * 2014-09-01 2016-03-03 Cw Bearing Gmbh Rolling bearings with electrical bypass for rolling elements

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Effective date: 20120508