DE1169214B - Sealing of roller bearings - Google Patents
Sealing of roller bearingsInfo
- Publication number
- DE1169214B DE1169214B DEN20262A DEN0020262A DE1169214B DE 1169214 B DE1169214 B DE 1169214B DE N20262 A DEN20262 A DE N20262A DE N0020262 A DEN0020262 A DE N0020262A DE 1169214 B DE1169214 B DE 1169214B
- Authority
- DE
- Germany
- Prior art keywords
- sealing
- bearing ring
- annular
- roller bearings
- disc
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims description 37
- 239000012528 membrane Substances 0.000 claims 1
- 239000012858 resilient material Substances 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F16C33/784—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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Support Of The Bearing (AREA)
Description
Abdichtung von Wälzlagern Die Erfindung befaßt sich mit der Abdeckung bzw. Abdichtung des Ringspaltes zwischen dem äußeren und inneren Lagerring von Wälzlagem unter Verwendung einer ringfönnigen Dichtscheibe aus einem elastischen Werkstoff, die im stillstehenden Lagerring drehfest eingepreßt ist und zur Abdichtung mit einer Dichtlippe in einen kegelförmigen Einstich an dem sich drehenden Lagerring eingreift.Sealing of rolling bearings The invention is concerned with the cover or sealing of the annular gap between the outer and inner bearing ring of roller bearings using an annular sealing washer made of an elastic material, which is pressed in a rotationally fixed manner in the stationary bearing ring and for sealing with a Sealing lip engages in a conical recess on the rotating bearing ring.
Der Abdichtung des Ringspaltes kommt dabei die Aufgabe zu, das Eindringen von Staub und sonstigen Verunreinigungen von außen in die Laufflächen des Lagers zu vermeiden und ferner auch ein Austreten des Schmiermittels aus dem Lager bei Erwärmung desselben zu verhindern.The task of sealing the annular gap is that of penetration of dust and other impurities from the outside into the running surfaces of the bearing to avoid and also leakage of the lubricant from the bearing To prevent heating of the same.
Eine besondere Schwierigkeit für eine bei allen auftretenden Betriebszuständen sicher wirksame Ab- dichtung besteht dabei unter anderem darin, eine zuverlässige Abdichtung auch dann sicherzustellen, wenn der sich drehende Lagerring während des Betriebszustandes eine axiale Verschiebung gegenüber dem feststehenden Lagerring erfährt. Die bisher bekannten Abdichtungen konnten diese Forderung nicht, zumindest nicht zufriedenstellend erfüllen, da hier die Dichtlippe nur jeweils an einer Flanke des kegelförmi-en Einstiches anliegt und sich bei einer Axialverschiebung von dieser Flanke abhebt bzw. von dem sich bei der Erwärmung ausdehnenden Schmiermittel abgehoben wird.A particular difficulty for all operating conditions occurring in safe effective seal consists, inter alia, also to ensure a reliable seal when the rotating bearing ring experiences an axial displacement in relation to the stationary bearing ring during the operating state. The previously known seals could not meet this requirement, at least not satisfactorily, since here the sealing lip only rests against one flank of the conical recess and lifts off this flank when it is axially displaced or is lifted off the lubricant that expands when heated .
Um ein Abheben der Dichtlippe in jedem Falle zu verhindern, wird erfindungsgemäß der Vorschlag gemacht, die Dichtlippe der Ringscheibe mit zwei an den Flanken des Einstiches anliegenden Dichtkanten auszustatten.In order to prevent the sealing lip from lifting off in any case, according to the invention the proposal made, the sealing lip of the washer with two on the flanks of the To equip puncture adjacent sealing edges.
In weiterer Ausgestaltung desGegenstandesderErfindung wird der Mittelsteg der Ringscheibe dünnwandig ausgeführt und der kegelförmige Einstich mit einer plan verlaufenden Ringfläche und einer schräg nach außen verlaufenden Schulterfläche versehen. Somit üben beide Flächen des Einstiches gleichzeitig dichtende Funktionen aus, wobei die Schulterfläche zusätzlich stets die axiale Anlage der zugeordneten Dichtkante der Ringscheibe gewährleistet.In a further embodiment of the subject matter of the invention, the central web the ring disc is made thin-walled and the conical recess with a flat extending ring surface and an obliquely outwardly extending shoulder surface Mistake. Both surfaces of the puncture thus exercise sealing functions at the same time off, with the shoulder surface also always the axial contact of the associated Sealing edge of the washer guaranteed.
In der Zeichnung sind zwei Ausführungsbeispiele des Gegenstandes der Erfindung dargestellt. Es zeigt Fig. 1 eine Dichtscheibe aus Kunststoff, F i g. 2 eine Stahlscheibe mit einer anvulkanisierten, elastischen Gummidichtlippe.In the drawing, two exemplary embodiments of the subject matter of the invention are shown. 1 shows a sealing disk made of plastic, FIG. 2 a steel disk with a vulcanized, elastic rubber sealing lip.
In den beiden Figuren ist jeweils ein halber Radialschnitt durch eine Hälfte eines Wälzlagers dargestellt. Die erfindungsgemäße Abdichtung findet selbstverständlich in gleicher Weise für den Ringspalt auf beiden Seiten des Lagers Verwendung. Das Ausführungsbeispiel nach Anspruch 1 zeigt eine Kunststoffdichtscheibe 1, die im stillstehenden Lagerring 2 drehfest eing#preßt ist. Die Dichtlippe 3 der Ringscheibe 1 weist zwei Dichtkanten 4 und 5 auf, die in einem kegelförmigen Einstich 6 des sich drehenden Lagerringes 7 federnd anliegen. Der kegelförinige Einstich 6 weist eine plan verlaufende Ringfläche 8, an der die Dichtkante 5 anliegt, und eine schräg nach außen verlaufende Schulterfläche 9 auf, an der die Dichtkante 4 der Dichtlippe 3 anliegt.In each of the two figures, half a radial section is shown through one half of a roller bearing. The seal according to the invention is of course used in the same way for the annular gap on both sides of the bearing. The embodiment according to claim 1 shows a plastic sealing washer 1 which is pressed into the stationary bearing ring 2 in a rotationally fixed manner. The sealing lip 3 of the annular disk 1 has two sealing edges 4 and 5 , which rest resiliently in a conical recess 6 of the rotating bearing ring 7. The conical recess 6 has a planar annular surface 8 on which the sealing edge 5 rests, and a shoulder surface 9 which runs obliquely outward and on which the sealing edge 4 of the sealing lip 3 rests.
Die Ausdrehung am stillstehenden Lagerring 2 zur Aufnahme der Dichtscheibe 1 ist derart gestaltet, daß die Dichtscheibe unbedingt dicht und verdrehsicher eingebaut werden kann. Es dient hierzu eine Planfläche 10 zur Auflage der Dichtscheibe, und ferner ist ein über den Umfang verlaufender, nach innen vorstehender schmaler Rand 11 vorgesehen. Der Rand 11 erfüllt dabei einmal die Aufgabe, zwischen der Dichtscheibe 1 und dem Lagerring 2 eine gute Ab- dichtung zu sichern, und ferner erhält die Dichtscheibe an ihrem Außenumfang durch den Rand 11 eine leichte Vorspannung, wodurch auf die Dichtscheibe in vorteilhafter Weise ein geringer axialer Anpreßdruck in Richtung auf die Auflagefläche 10 ausgeübt wird.The recess on the stationary bearing ring 2 for receiving the sealing washer 1 is designed in such a way that the sealing washer can be installed tightly and securely against rotation. For this purpose, a flat surface 10 is used to support the sealing washer, and a narrow edge 11 extending over the circumference and protruding inward is provided. The edge 11 again fulfills the task of securing seal a good waste between the gasket 1 and the bearing ring 2, and further the sealing disc receives on its outer circumference through the edge 11, a light preload, whereby the sealing disc in an advantageous manner, a small axial contact pressure in the direction of the support surface 10 is exerted.
Der schmale Steg 12 in der Mitte der Dichtscheibe 1 ist so berechnet, daß die Dichtlippe 3 in jeder Lage elastisch bleibt und zugleich eine Fettkammer für die Schmierung des Lagers bildet. Zur Fernhaltung des groben Schmutzes von der Abdichtstelle in dem kegelförmigen Einstich 6 ist an der schräg nach außen verlaufenden Schulterfläche 9 an dem sich drehenden Lagerring 7 oberhalb der Anlauffläche für die Dichtlippe 3 eine Abkantung 13, z. B. in Form eines Spornes, angeordnet.The narrow web 12 in the middle of the sealing washer 1 is calculated so that the sealing lip 3 remains elastic in every position and at the same time forms a grease chamber for the lubrication of the bearing. Used to control the coarse dirt from the sealing point in the conical recess 6 on the rotating bearing ring 7 above the run-up surface for the sealing lip 3 is a bevel 13, such at the obliquely outwardly extending shoulder surface. 9 B. in the form of a spur arranged.
Bei dem in F i g. 2 dargestellten Beispiel besteht die Dichtscheibe aus einer Stahlscheibe 14, an der eine elastische Dichtlippe 15 aus Gummi anvulkanisiert ist. Die Befestigung der Dichtscheibe 14 im Lagerring 2 erfolgt durch Einpressen oder Einwalzen in die Ausdrehung am stillstehenden Lagerring, wobei das gleiche Querschnittprofil wie in dem Beispiel nach F i g. 1 Verwendung finden kann.In the case of the one shown in FIG. 2, the sealing disk consists of a steel disk 14 to which an elastic sealing lip 15 made of rubber is vulcanized. The sealing disk 14 is fastened in the bearing ring 2 by pressing or rolling into the recess on the stationary bearing ring, the same cross-sectional profile as in the example according to FIG. 1 can be used.
Der übrige Aufbau und die Wirkungsweise stimmen unverändert mit dem Ausführungsbeispiel nach F i g. 1 überein.The rest of the structure and the mode of operation are unchanged from the exemplary embodiment according to FIG. 1 match.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN20262A DE1169214B (en) | 1961-06-29 | 1961-06-29 | Sealing of roller bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN20262A DE1169214B (en) | 1961-06-29 | 1961-06-29 | Sealing of roller bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1169214B true DE1169214B (en) | 1964-04-30 |
Family
ID=7341217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEN20262A Pending DE1169214B (en) | 1961-06-29 | 1961-06-29 | Sealing of roller bearings |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1169214B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1801894A1 (en) * | 1967-10-14 | 1970-06-04 | Toyo Bearing Mfg Company Ltd | Rolling bearings with built-in sealing washers |
| US3814446A (en) * | 1971-01-26 | 1974-06-04 | K Derman | Sealing arrangement |
| DE3009977A1 (en) * | 1980-03-14 | 1981-09-24 | Nippon Seiko K.K., Tokyo | Seal for ball or roller bearing - has intermediate lip with divided contact region arranged between inner and outer lips |
| FR2479374A1 (en) * | 1980-03-28 | 1981-10-02 | Nippon Seiko Kk | Seal for ball or roller bearing - has intermediate lip with divided contact region arranged between inner and outer lips |
| US4505484A (en) * | 1980-03-12 | 1985-03-19 | Nippon Seiko Kabushiki Kaisha | Sealing device for a rolling bearing |
| FR2574881A1 (en) * | 1984-12-19 | 1986-06-20 | Skf Gmbh | SEALED BEARING |
| EP0208880A3 (en) * | 1985-06-21 | 1987-04-15 | Riv-Skf Officine Di Villar Perosa S.P.A | A sealing assembly, particularly for bearings |
| EP0554773A1 (en) * | 1992-02-05 | 1993-08-11 | Skf Industrie S.P.A. | Protective shield for rolling-contact bearings |
| DE4422001A1 (en) * | 1994-06-23 | 1996-01-04 | Miele & Cie | Bearing seal for radial rolling bearings |
| EP1152159A1 (en) * | 2000-04-27 | 2001-11-07 | Nsk Ltd | Rolling bearing with seal plate |
| WO2011015176A1 (en) * | 2009-08-01 | 2011-02-10 | Schaeffler Technologies Gmbh & Co. Kg | Sealing device for a pivot bearing |
| WO2012069458A1 (en) * | 2010-11-25 | 2012-05-31 | Aktiebolaget Skf | Rolling bearing having interchangeable seal |
| DE102015203891A1 (en) * | 2015-03-05 | 2016-09-08 | Aktiebolaget Skf | sealing arrangement |
| IT202100011102A1 (en) * | 2021-05-03 | 2022-11-03 | Skf Ab | SEALING DEVICE IN PLASTIC MATERIAL FOR BEARING UNIT |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622418A (en) * | 1946-03-21 | 1949-05-02 | Gen Motors Corp | Improved anti-friction bearing |
| DE934379C (en) * | 1951-01-06 | 1955-10-20 | Roulements A Billes Miniatures | Device for hermetically sealing ball or roller bearings |
| US2755113A (en) * | 1952-09-15 | 1956-07-17 | Link Belt Co | Bearing seal |
| US2764433A (en) * | 1952-12-31 | 1956-09-25 | Gen Motors Corp | Demountable closure |
| FR1125730A (en) * | 1954-06-11 | 1956-11-06 | Pollard Bearings Ltd | Sealing for fan and pump shaft bearings, especially for internal combustion engines |
| US2829933A (en) * | 1955-11-30 | 1958-04-08 | S K F Ind Inc | Pillow blocks |
| DE1769655U (en) * | 1956-12-08 | 1958-07-03 | Skf Kugellagerfabriken Gmbh | CONTACT SEAL FOR BALL BEARINGS. |
| US2857179A (en) * | 1955-07-01 | 1958-10-21 | Gen Motors Corp | Bearing seal |
| US2887330A (en) * | 1956-01-23 | 1959-05-19 | Gen Motors Corp | Demountable closure |
-
1961
- 1961-06-29 DE DEN20262A patent/DE1169214B/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB622418A (en) * | 1946-03-21 | 1949-05-02 | Gen Motors Corp | Improved anti-friction bearing |
| DE934379C (en) * | 1951-01-06 | 1955-10-20 | Roulements A Billes Miniatures | Device for hermetically sealing ball or roller bearings |
| US2755113A (en) * | 1952-09-15 | 1956-07-17 | Link Belt Co | Bearing seal |
| US2764433A (en) * | 1952-12-31 | 1956-09-25 | Gen Motors Corp | Demountable closure |
| FR1125730A (en) * | 1954-06-11 | 1956-11-06 | Pollard Bearings Ltd | Sealing for fan and pump shaft bearings, especially for internal combustion engines |
| US2857179A (en) * | 1955-07-01 | 1958-10-21 | Gen Motors Corp | Bearing seal |
| US2829933A (en) * | 1955-11-30 | 1958-04-08 | S K F Ind Inc | Pillow blocks |
| US2887330A (en) * | 1956-01-23 | 1959-05-19 | Gen Motors Corp | Demountable closure |
| DE1769655U (en) * | 1956-12-08 | 1958-07-03 | Skf Kugellagerfabriken Gmbh | CONTACT SEAL FOR BALL BEARINGS. |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1801894A1 (en) * | 1967-10-14 | 1970-06-04 | Toyo Bearing Mfg Company Ltd | Rolling bearings with built-in sealing washers |
| US3814446A (en) * | 1971-01-26 | 1974-06-04 | K Derman | Sealing arrangement |
| US4505484A (en) * | 1980-03-12 | 1985-03-19 | Nippon Seiko Kabushiki Kaisha | Sealing device for a rolling bearing |
| DE3009977A1 (en) * | 1980-03-14 | 1981-09-24 | Nippon Seiko K.K., Tokyo | Seal for ball or roller bearing - has intermediate lip with divided contact region arranged between inner and outer lips |
| FR2479374A1 (en) * | 1980-03-28 | 1981-10-02 | Nippon Seiko Kk | Seal for ball or roller bearing - has intermediate lip with divided contact region arranged between inner and outer lips |
| FR2574881A1 (en) * | 1984-12-19 | 1986-06-20 | Skf Gmbh | SEALED BEARING |
| EP0208880A3 (en) * | 1985-06-21 | 1987-04-15 | Riv-Skf Officine Di Villar Perosa S.P.A | A sealing assembly, particularly for bearings |
| US4733978A (en) * | 1985-06-21 | 1988-03-29 | Riv-Skf Officine Di Villar Persoa S.P.A. | Contact type flexible seal for bearings |
| EP0554773A1 (en) * | 1992-02-05 | 1993-08-11 | Skf Industrie S.P.A. | Protective shield for rolling-contact bearings |
| DE4422001A1 (en) * | 1994-06-23 | 1996-01-04 | Miele & Cie | Bearing seal for radial rolling bearings |
| EP1152159A1 (en) * | 2000-04-27 | 2001-11-07 | Nsk Ltd | Rolling bearing with seal plate |
| US6776531B2 (en) | 2000-04-27 | 2004-08-17 | Nsk Ltd. | Rolling bearing with seal plate |
| WO2011015176A1 (en) * | 2009-08-01 | 2011-02-10 | Schaeffler Technologies Gmbh & Co. Kg | Sealing device for a pivot bearing |
| WO2012069458A1 (en) * | 2010-11-25 | 2012-05-31 | Aktiebolaget Skf | Rolling bearing having interchangeable seal |
| US8979386B2 (en) | 2010-11-25 | 2015-03-17 | Aktiebolaget Skf | Rolling element bearing having replaceable seal |
| DE102015203891A1 (en) * | 2015-03-05 | 2016-09-08 | Aktiebolaget Skf | sealing arrangement |
| IT202100011102A1 (en) * | 2021-05-03 | 2022-11-03 | Skf Ab | SEALING DEVICE IN PLASTIC MATERIAL FOR BEARING UNIT |
| US12025184B2 (en) | 2021-05-03 | 2024-07-02 | Aktiebolaget Skf | Sealing device made of plastics material for a bearing unit |
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