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DE9015899U1 - Sealing ring - Google Patents

Sealing ring

Info

Publication number
DE9015899U1
DE9015899U1 DE9015899U DE9015899U DE9015899U1 DE 9015899 U1 DE9015899 U1 DE 9015899U1 DE 9015899 U DE9015899 U DE 9015899U DE 9015899 U DE9015899 U DE 9015899U DE 9015899 U1 DE9015899 U1 DE 9015899U1
Authority
DE
Germany
Prior art keywords
sealing ring
sealing
pressure equalization
tip
bearing
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.)
Expired - Lifetime
Application number
DE9015899U
Other languages
German (de)
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.)
SKF GmbH
Original Assignee
SKF GmbH
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 SKF GmbH filed Critical SKF GmbH
Priority to DE9015899U priority Critical patent/DE9015899U1/en
Publication of DE9015899U1 publication Critical patent/DE9015899U1/en
Priority to ITTO910869A priority patent/IT1250859B/en
Priority to GB9124367A priority patent/GB2250066B/en
Priority to FR9114287A priority patent/FR2669704B1/en
Priority to JP3331536A priority patent/JPH04266617A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • 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
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • 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
    • F16C33/726—Sealings with means to vent the interior of the bearing
    • 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
    • F16C33/7856—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 with a single sealing lip
    • 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
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)

Description

SKF GmbH Schweinfurt, 19.11.1990SKF GmbH Schweinfurt, 19.11.1990

DE 90 028 DE STSP-bla.seDE 90 028 DE STSP-bla.se

BeschreibungDescription

DichtungsringSealing ring

Die vorliegende Erfindung betrifft einen Dichtungsring, insbesondere für Wälzlager, der an einem Lagerteil befestigt ist und mit einer Dichtkante an einer Fläche des anderen Lagerteils anliegt.The present invention relates to a sealing ring, in particular for rolling bearings, which is attached to one bearing part and rests with a sealing edge on a surface of the other bearing part.

Derartige Dichtungsringe sind allgemein bekannt und schließen den abzudichtenden Raum luftdicht ab, so daß bei Temperaturänderungen über- und Unterdrücke entstehen und die abgeschlossenen Räume durch die Dichtfugen "atmen". Hierbei werden Schmutzteilchen, die sich vor der Dichtfuge angesammelt haben, bei Unterdruck durch die Dichtfuge in den Lagerraum gezogen, so daß die Lagerteile schnell verschleißen. Außerdem wölbt sich der Dichtungsring beim "Atmen" nach außen und nach innen, so daß die Dichtkante bei einer zylindrischen Auflagefläche abwechselnd auf einem sauberen und einem verschmutzten Abschnitt der Mantelfäche gleitet. Dies führt sehr schnell zu einem Verschleiß der Dichtkante.Such sealing rings are well known and seal the space to be sealed airtight, so that when temperatures change, overpressure and underpressure are created and the sealed spaces "breathe" through the sealing joints. In this case, dirt particles that have accumulated in front of the sealing joint are drawn through the sealing joint into the bearing space when there is a negative pressure, so that the bearing parts wear out quickly. In addition, the sealing ring bulges outwards and inwards when it "breathes", so that the sealing edge of a cylindrical bearing surface slides alternately on a clean and a dirty section of the casing surface. This leads to wear of the sealing edge very quickly.

Zur Vermeidung dieser Nachteile ist es z. B. durch die GB-PS 1 191 685 bekannt, bei Dichtungsringen Druckausgleichsöffnungen vorzusehen, die durch elastische Abschnitte, welche durch zwei kreuzförmig angeordnete Schlitze gebildet werden, verschlossen sind.To avoid these disadvantages, it is known, for example from GB-PS 1 191 685, to provide pressure equalization openings in sealing rings, which are closed by elastic sections formed by two cross-shaped slots.

Bei dieser bekannten Ausführung können sich im Bereich der
Druckausgleichsöffnung verhältnismäßig große Menge von
Staubteilchen ablagern, die bei Unterdruck in den
abzudichtenden Raum gesaugt werden, so daß in dem Raum
angeordnete Lagerteile sehr schnell verschleißen und
unbrauchbar werden.In this well-known design, the area of the
Pressure equalization opening relatively large amount of
Dust particles are deposited which, under negative pressure,
be sucked into the room to be sealed, so that in the room
arranged bearing parts wear out very quickly and
become unusable.

Der in Anspruch 1 angegebenen Erfindung liegt die Aufgabe zugrunde, einen Dichtungsring der eingangs genannten Art zu
schaffen, bei dem ein Ansaugen von Schmutzteilchen von außen
weitgehend verhindert wird.The invention specified in claim 1 is based on the object of providing a sealing ring of the type mentioned at the beginning
where the suction of dirt particles from outside
is largely prevented.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine
Druckausgleichsöffnung in einem kegelförmigen, an der äußeren Seitenfläche des Dichtungsringes vorgesehenen Vorsprung
angeordnet ist, dessen Spitze im Bereich der Mündung der
Druckausgleichsöffnung liegend angeordnet ist. Hierdurch wird erreicht, daß sich im Bereich der Mündung derThis object is achieved according to the invention in that a
Pressure equalization opening in a conical projection provided on the outer side surface of the sealing ring
is arranged, the tip of which is in the area of the mouth of the
Pressure equalization opening is arranged horizontally. This ensures that in the area of the mouth of the

Druckausgleichsöffnung praktisch keine Staubteilchen ablagern können, so daß bei Unterdruck auch keine Staubteilchen in den abgedichteten Raum eingesaugt werden.Pressure equalization opening practically does not allow dust particles to settle, so that in the event of negative pressure no dust particles are sucked into the sealed space.

Weitere Ausgestaltungen des erfindungsgemäßen Dichtungsringes sind im Unteranspruch beschrieben.Further embodiments of the sealing ring according to the invention are described in the subclaim.

Die Erfindung wird nachstehend anhand eines in der Zeichnung
dargestellten Ausführungsbeispiels näher erläutert.The invention is described below with reference to a drawing
illustrated embodiment is explained in more detail.

Es zeigen: *Show it: *

Figur 1 einen Längsschnitt durch ein zweireihigesFigure 1 shows a longitudinal section through a two-row

Zylinderrollenlager mit dem erfindungsgemäßen
Dichtungsring,Cylindrical roller bearing with the inventive
sealing ring,

Figur 2 einen Teil einer Seitenansicht des in der Figur 1 dargestellten Lagers,Figure 2 shows a part of a side view of the bearing shown in Figure 1,

Figur 3 eine vergrößerte Darstellung des Dichtungsringes im Schnitt.Figure 3 is an enlarged cross-sectional view of the sealing ring.

In den Figuren 1 und 2 ist ein zweireihiges Zylinderrollenlager mit einem einteiligen Außenring 1, einem quer zur Achse geteilten Innenring 2 und den Zylinderrollen 3 dargestellt.Figures 1 and 2 show a double-row cylindrical roller bearing with a one-piece outer ring 1, an inner ring 2 split transversely to the axis and the cylindrical rollers 3.

Der Raum 4 zwischen den Lagerringen 1, 2 ist auf beiden Seiten durch jeweils einen in der Figur 3 vergrößert dargestellten Dichtungsring 5 aus Kunststoff abgedichtet, der in einer Ringnut 6 des Außenringes 1 angeordnet ist und mit einer Dichtkante 7 auf der zylindrischen Mantelfläche 8 des Bordes 9 aufliegt. Der Dichtungsring 5 weist eine oder mehrere am Umfang verteilt angeordnete Druckausgleichsöffnungen 10 mit kleinem Durchmesser auf, die jeweils in einem kegelförmigen, an der äußeren Seitenfläche 11 des Dichtungsringes 5 angeordneten Vorsprung 12 vorgesehen sind, dessen Spitze im Bereich der Mündung der Druckausgleichsöffnung 10 liegt. Die Spitze des Vorsprungs 12 weist nur eine kleine Fläche 13 auf, so daß sich im Bereich der Mündung 14 praktisch keine Staubteilchen ablagern können, die bei Unterdruck in den Raum 4 gesaugt werden. Die Staubteilchen werden gefahrlos am übergang zwischen dem kegelförmigen Vorsprung 12 und der Seitenfläche 11 des Dichtungsringes 5 abgelagert.The space 4 between the bearing rings 1, 2 is sealed on both sides by a plastic sealing ring 5, shown enlarged in Figure 3, which is arranged in an annular groove 6 of the outer ring 1 and rests with a sealing edge 7 on the cylindrical surface 8 of the rim 9. The sealing ring 5 has one or more pressure equalization openings 10 with a small diameter, distributed around the circumference, each of which is provided in a conical projection 12 arranged on the outer side surface 11 of the sealing ring 5, the tip of which lies in the area of the mouth of the pressure equalization opening 10. The tip of the projection 12 has only a small area 13, so that practically no dust particles can settle in the area of the mouth 14, which are sucked into the space 4 under negative pressure. The dust particles are safely deposited at the transition between the conical projection 12 and the side surface 11 of the sealing ring 5.

Diese beschriebene Ausführungsform stellt nur ein Beispiel einer erfindungsgemäßen Abdichtung dar. Änderungen der Konstruktion sind im Rahmen der Erfindung ohne weiteres möglich. So ist dieser Dichtungsring nicht nur für Wälzlager verwendbar, sondern kann auch für Gleitlager, zur Abdichtung von Gehäusen usw. verwendet werden.This described embodiment represents only one example of a seal according to the invention. Changes to the design are possible without further ado within the scope of the invention. This sealing ring can therefore not only be used for rolling bearings, but can also be used for plain bearings, for sealing housings, etc.

Claims (2)

SKF GmbH Schweinfurt, 19.11.1990 DE 90 028 DE STSP-bla.se Schutzansprüche DichtungsringSKF GmbH Schweinfurt, 19.11.1990 DE 90 028 DE STSP-bla.se Protection claims Sealing ring 1. Dichtungsring, insbesondere für Wälzlager, der an einem Lagerteil befestigt ist und mit einer Dichtkante an einer Fläche des anderen Lagerteils anliegt, dadurch gekennzeichnet, daß eine Druckausgleichsöffnung (10) in einem kegelförmigen, an der äußeren Seitenfläche (11) des Dichtungsringes (5) vorgesehenen Vorsprung (12) angeordnet ist, dessen Spitze im Bereich der Mündung (14) der Druckausgleichsöffnung (10) liegend angeordnet ist.1. Sealing ring, in particular for rolling bearings, which is attached to a bearing part and rests with a sealing edge on a surface of the other bearing part, characterized in that a pressure equalization opening (10) is arranged in a conical projection (12) provided on the outer side surface (11) of the sealing ring (5), the tip of which is arranged in the region of the mouth (14) of the pressure equalization opening (10). 2. Dichtungsring nach Anspruch 1, dadurch gekennzeichnet, daß die Spitze des kegelförmige Vorsprungs (12) eine kleine Fläche (13) aufweist.2. Sealing ring according to claim 1, characterized in that the tip of the conical projection (12) has a small surface (13).
DE9015899U 1990-11-22 1990-11-22 Sealing ring Expired - Lifetime DE9015899U1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE9015899U DE9015899U1 (en) 1990-11-22 1990-11-22 Sealing ring
ITTO910869A IT1250859B (en) 1990-11-22 1991-11-12 SEALING RING
GB9124367A GB2250066B (en) 1990-11-22 1991-11-15 A seal
FR9114287A FR2669704B1 (en) 1990-11-22 1991-11-20 SEALING RING, PARTICULARLY FOR A ROLLING BEARING.
JP3331536A JPH04266617A (en) 1990-11-22 1991-11-21 Seal ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9015899U DE9015899U1 (en) 1990-11-22 1990-11-22 Sealing ring

Publications (1)

Publication Number Publication Date
DE9015899U1 true DE9015899U1 (en) 1991-02-07

Family

ID=6859574

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9015899U Expired - Lifetime DE9015899U1 (en) 1990-11-22 1990-11-22 Sealing ring

Country Status (5)

Country Link
JP (1) JPH04266617A (en)
DE (1) DE9015899U1 (en)
FR (1) FR2669704B1 (en)
GB (1) GB2250066B (en)
IT (1) IT1250859B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040652A1 (en) * 1997-03-13 1998-09-17 Mannesmann Rexroth Aktiengesellschaft Directional-control valve
DE102004033875A1 (en) * 2003-07-31 2005-02-24 Aktiebolaget Skf Bearing with double row of rolling bodies has sealing ring clamp which connects two inner races in one piece and located so that gap formed by two bearing faces of inner races is sealed closed
DE102007017925A1 (en) * 2007-04-13 2008-10-16 Isel Automation Gmbh & Co. Kg Rotational unit e.g. rotary unit, for use in e.g. milling machine, has outer ring of bearing unit removably connected with housing, and inner ring of bearing unit removably connected with stator or rotor of torque motor
CN105090252A (en) * 2014-05-06 2015-11-25 襄阳汽车轴承股份有限公司 Double-column cylindrical roller bearing with sealing function

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1007921C2 (en) * 1997-12-29 1999-06-30 Skf Ind Trading & Dev Lower with fat dosage.
RU2167350C1 (en) * 2000-02-14 2001-05-20 Мансуров Ибрагим Яхъяевич Cable seismoprotective platform
GB0229141D0 (en) 2002-12-16 2003-01-15 Splashpower Ltd Improvements relating to contact-less power transfer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977138A (en) * 1957-04-12 1961-03-28 Gen Motors Corp Flexible seal
GB1601227A (en) * 1978-03-11 1981-10-28 West & Son Engs Ltd Shaft seal unit
DE3210811C2 (en) * 1982-03-24 1984-01-26 O & K Orenstein & Koppel Ag, 1000 Berlin Protective ring with openings for a hydraulic sealing system
FR2526896B1 (en) * 1982-05-15 1986-10-10 Skf Kugellagerfabriken Gmbh SEALING DEVICE FOR BEARINGS
SE437412B (en) * 1984-04-24 1985-02-25 Skf Nova Ab DEVICE FOR SEALING A SELF-SETTING ROLLING STOCK
DE3616999A1 (en) * 1986-05-21 1987-11-26 Kugelfischer G Schaefer & Co Seal, particularly for rolling-contact bearings

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998040652A1 (en) * 1997-03-13 1998-09-17 Mannesmann Rexroth Aktiengesellschaft Directional-control valve
US6199585B1 (en) 1997-03-13 2001-03-13 Mannesmann Rexroth Ag Directional-control valve
DE102004033875A1 (en) * 2003-07-31 2005-02-24 Aktiebolaget Skf Bearing with double row of rolling bodies has sealing ring clamp which connects two inner races in one piece and located so that gap formed by two bearing faces of inner races is sealed closed
DE102004033875B4 (en) * 2003-07-31 2006-04-06 Aktiebolaget Skf Bearings with double row of rolling elements
DE102007017925A1 (en) * 2007-04-13 2008-10-16 Isel Automation Gmbh & Co. Kg Rotational unit e.g. rotary unit, for use in e.g. milling machine, has outer ring of bearing unit removably connected with housing, and inner ring of bearing unit removably connected with stator or rotor of torque motor
CN105090252A (en) * 2014-05-06 2015-11-25 襄阳汽车轴承股份有限公司 Double-column cylindrical roller bearing with sealing function

Also Published As

Publication number Publication date
GB2250066B (en) 1994-09-07
GB2250066A (en) 1992-05-27
ITTO910869A1 (en) 1993-05-12
FR2669704B1 (en) 1993-10-22
ITTO910869A0 (en) 1991-11-12
JPH04266617A (en) 1992-09-22
IT1250859B (en) 1995-04-21
FR2669704A1 (en) 1992-05-29
GB9124367D0 (en) 1992-01-08

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