WO2009109162A2 - Élément partiel pour un élément d'étanchéité d'un roulement - Google Patents

Élément partiel pour un élément d'étanchéité d'un roulement Download PDF

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Publication number
WO2009109162A2
WO2009109162A2 PCT/DE2009/000194 DE2009000194W WO2009109162A2 WO 2009109162 A2 WO2009109162 A2 WO 2009109162A2 DE 2009000194 W DE2009000194 W DE 2009000194W WO 2009109162 A2 WO2009109162 A2 WO 2009109162A2
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
sub
bearing ring
sealing element
section
Prior art date
Application number
PCT/DE2009/000194
Other languages
German (de)
English (en)
Other versions
WO2009109162A3 (fr
Inventor
Horst DÖPPLING
Erich Lunz
Ralph Painta
Peter Schuster
Original Assignee
Schaeffler 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 Kg filed Critical Schaeffler Kg
Publication of WO2009109162A2 publication Critical patent/WO2009109162A2/fr
Publication of WO2009109162A3 publication Critical patent/WO2009109162A3/fr

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
    • 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
    • F16C33/80—Labyrinth sealings
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a 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

Definitions

  • the invention relates to a sub-element according to the preamble of claim 1 for a sealing element which is provided for a bearing with a bearing ring, a sealing element according to claim 6 or 7 for a bearing and a bearing according to claim 10.
  • DE 35 16 131 A1 describes a seal for a rolling bearing with two bearing rings, wherein the seal comprises a sealing element with two sub-elements, wherein the first sub-element is attached to an inner circumferential surface of the first bearing ring, and wherein the second sub-element at a recess of the inner circumferential surface of the second bearing ring is arranged.
  • the first sub-element and the second sub-element have axial projections which engage in a comb-like manner, so that a labyrinth seal is formed, in which the second sub-element engages over the first sub-element and partially the end face of the opposite, first bearing ring.
  • Such an arrangement has a considerable axial extension and requires a material removal on the inner circumferential surface of one of the two bearing rings, ie in the vicinity of the raceway of the rolling elements.
  • WO 2006/061096 A1 describes a seal for a roller bearing which comprises a centrifugal disk arranged on the end face of one of the bearing rings.
  • the seal further comprises a sealing element with a single sub-element, which is arranged on one of the bearing rings on a recess on the inner circumferential surface and sealingly abuts a recess of the inner circumferential surface of the other bearing ring, so that a contacting seal is formed.
  • a groove is attached at a distance from the end face of the bearing ring, which receives an O-ring.
  • the O-ring is structurally separated from the other components of the seal, in particular from the centrifugal disk and the one-piece sealing element.
  • the seal for a rolling bearing with a single bearing ring, wherein the mounted shaft assumes the function of the second bearing ring.
  • the seal comprises a sealing element with an axial and a radial portion, wherein the axial portion bears against the shaft and the radial portion partially overlaps an intermediate sleeve, which is outside of the bearing ring and between the bearing ring and the Bearing is arranged.
  • the sealing element and the intermediate sleeve form a gap seal with each other.
  • the second portion is fixable to an outer circumferential surface of the bearing ring, the sub-element and thus the sealing element having the sub-element can be easily fixed to the bearing ring.
  • the bearing ring can be made thin-walled in the region of the outer lateral surface, so that the second section does not protrude.
  • no structural changes to the inner circumferential surface of the bearing ring must be made, so that the given by the inner circumferential surface of the inner area of the bearing does not need to be widened in order to attach the sub-element or the sealing element can. Instead, the inner circumferential surface and its cross section remain unchanged, so that the interior to be sealed need not be widened.
  • the outer surface of the bearing ring can be processed and designed so that the second portion of the sub-element can be securely arranged.
  • the first section engages over an end face of the bearing ring at least in sections, in particular bears against the end face, the first section can rest on the end face or be supported on the latter, as is the case here that a sealing element is formed with only a very small axial extent, wherein the sub-element projects only slightly beyond the bearing.
  • the sealing element receives an additional support, which allows a simple and fast, correct position fitting of the sealing element.
  • the second portion of an elastic material in particular of plastic, especially an elastomer, is formed. Due to the elastic properties of the material at least the second portion of the sub-element this can be easily clipped to the outer surface of the bearing ring.
  • the second section comprises an elastic metal.
  • the second portion may be made entirely of the elastic metal, such as spring steel, wherein the spring steel is formed as circumferential tongues or claws or claws, alternatively, the elastic metal, especially the spring steel, added as a reinforcement in the plastic, for example of the Plastic, be.
  • the second portion comprises a pointing in the direction of the outer lateral surface mold portion, said mold portion is pressed in particular by the elastic properties of the second portion fixedly against the lateral surface.
  • the mold portion which is formed for example by a circumferential bead made of plastic, to engage in an associated receptacle, especially a groove on the outer surface of the bearing ring, so that a positive fixing of the sub-element of the sealing element is possible.
  • the positive fixing can be supported by the preferably elastic material properties of the partial element in the region of the second portion.
  • the second section may be formed from an elastomer and to expose the molding section as a circumferential bead element. shape.
  • This bead element is then inserted positively into a groove formed on the outer circumferential surface in order to fix the partial element to the bearing ring.
  • the bead element engages in the associated groove, so that both sections of the sub-element can be easily arranged in the correct position to the bearing ring.
  • the invention relates not only to the sub-element for the sealing element, but in particular also the sealing element as such, which comprises a sub-element according to the invention.
  • the sealing element may comprise a single sub-element and is thus fixed to the outer circumferential surface of a bearing ring, wherein it may abut against the end face or lateral surface of an opposite bearing ring and thereby forms a lip seal.
  • the sealing element comprising the single partial element can keep a distance from the end face or lateral surface of the other bearing ring and thus form a gap or labyrinth seal.
  • the sealing element may comprise two sub-elements, each of which is fixed to the outer circumferential surface of one of the two bearing rings.
  • the respective first portion of each of the two sub-elements can abut against the other first portion or a small distance, so that a lip seal or a non-contact gap seal is formed.
  • the first section of the first subelement can overlap the first section of the second subelement in sections and form a labyrinth seal.
  • the bearing ring of a bearing may have adjacent to the end face a circumferential recess, wherein the second portion of the sub-element is fixable in the recess.
  • the recess may be formed by a groove, in which engages the second portion, or by recordings for tongues, springs or similar locking means.
  • Fig. 1 shows a detail of a partially sectioned view of an embodiment of a sub-element according to the invention for an embodiment of a sealing element according to the invention in an embodiment of an inventive bearing, and
  • Fig. 2 shows a detail of a partially sectioned view of an embodiment of a partial element according to the invention for an embodiment of a sealing element according to the invention in one embodiment of a bearing according to the invention.
  • Fig. 1 shows a bearing 1, which is designed as a rolling bearing and a first bearing ring 2, which is designed as an outer ring, and a second bearing ring 3, which is designed as an inner ring comprises.
  • the two bearing rings 2, 3 include an interior space 4, are arranged in the rolling elements 5, which are guided by means of a cage 6.
  • the interior 4 is sealed axially on both sides by a seal having a sealing element 7, which is of similar design, so that only one of the two sealing elements 7 is described in more detail.
  • the sealing element 7 comprises a first sub-element 8 and a second sub-element 9, wherein the first sub-element 8 is fixed to the outer lateral surface 10 of the first bearing ring 2 and the second sub-element 9 on the outer circumferential surface 11 of the second bearing ring 3.
  • the first sub-element 8 Based on a bearing axis 12, the first sub-element 8 comprises a radially parked first portion 13 which engages over an end face 14 of the first bearing ring 2 and in particular rests against the first end face 14. Further, the first sub-element 8 comprises a relative to the bearing axis 12 axially aligned second portion 15 which is fixed to the lateral surface 10.
  • the second section 15 of the first sub-element 8 comprises a facing in the direction of the lateral surface 10 form portion 16 which is circumferentially formed circumferentially.
  • the mold section 16 has a bead profile in cross-section, which faces the lateral surface 10.
  • the mold section 16 is interrupted in sections in the circumferential direction, so that teeth 17 are formed, the axial extent of which ends at the level of the end face 14.
  • the teeth 17 form a bearing ring 2 revolving, partially interrupted bead element 18.
  • the second section 15 engages with the teeth 17 of the bead element 18 in a recess 19 in the lateral surface 10 of the first bearing ring 2.
  • This recess may be formed as the first bearing ring 2 outside circumferential groove; Alternatively, an undercut may be provided.
  • the recess 19 is mounted near the end face 14 and passes into this, so that in the region of the end face 14, the body of the first bearing ring 2 is less solid and the bearing ring 2 and thus the bearing 1 is reduced in total weight. Furthermore, the bearing ring 2 has a reduced moment of inertia with respect to the bearing axis 12.
  • the near the end face 14 defined in the recess 19 second portion 15 includes with its rear side 20 approximately flush with an axially spaced from the end face 14 portion 21 of the lateral surface 10 in height of the raceway of the rolling elements 4, so that the sealing element 7 radially outward not survive.
  • a gap, which remains between the second portion and the adjacent lateral surface or a connecting structure for the bearing 1, is filled in the bearing assembly.
  • the first section 13 has an axially outer outer surface 22, which forms a right angle with the outer surface 20 of the first section.
  • the first portion 13 has a thinned portion 23 and a widened portion 24, which are each closed by planar, in the interior 4 facing surfaces.
  • the second sub-element 9 of the sealing element 7 is formed substantially mirror-inverted to the first sub-element 8 and rests with a bead member 18 on the second portion 26 in the recess 19 of the lateral surface 11 of the second bearing ring 3.
  • the first portion 25 of the second sub-element 9 covers the end face of the second bearing ring 3 and abuts against this end face.
  • the second sub-element 9 has on the side facing away from the interior 4 of the bearing 1 side two surfaces, which complete a thinned portion 23 and a widened portion 24. At the side facing the interior 4 side of the first portion 25 of the second sub-element 9 is formed flat.
  • the first sub-element 8 engages with its first portion 13, the first portion 25 of the second sub-element 9 in sections such that the respective portions 23 and 24 as mutually complementary structures come to lie one above the other, that a thin, substantially radially extending gap is formed and a labyrinth seal arises. In this way, a seal is formed, which is effective, without causing a contact between the two sub-elements 8, 9.
  • Each of the sub-elements 8, 9 is made in one piece and consists of plastic, especially an elastomer.
  • the sub-elements 8, 9 are made separately from the bearing rings 2, 3 and then the sealing element 7 with the two sub-elements 8, 9 attached.
  • one of the teeth 17 is elastically slightly deformed, so that it can engage in the recess 19, after which the remaining teeth 17 of the circumferential bead element 18 can snap in or engage.
  • the sub-elements 8, 9 easily positionally correct to the respective bearing ring 2, 3 as well as position relative to each other, since both the recess 19 and the respective end face 14 of the bearing ring 2, 3 serve as a guide surface.
  • Fig. 2 shows a sealing element 7, which comprises a first sub-element 8 and a second sub-element 9, wherein the first sub-element 8 on the outer surface 10 of the first bearing ring 2 and the second sub-element 9 on the outer surface 11 of the second bearing ring 3 at a Recess 19 is fixed with a mold section 16.
  • the two sub-elements 8, 9 have radial sections 13, 25 and axial sections 15, 26, the one radial first section 13 covering the other first section 25 in sections.
  • 11 At the end facing away from the associated lateral surface 10, 11 each have a sealing lip 27, 28 is provided, which sealingly bears against the first part section 13, 25 of the respective other sub-element 9, 8.
  • the first section 15 of the first sub-element 8 partially covered the first section 26 of the second sub-element 9, but was spaced from the end face of the second bearing ring 3. It is understood that also provided may be that the first portion of one of the two sub-elements covers both end faces of the two bearing rings.
  • the gap may be formed by only two flat, parallel surfaces, as shown in partial detail in Fig. 2.
  • the two sections 13, 25 and 15, 26 of the two sub-elements 8, 9 were each formed integrally with each other.
  • the first portion may be made of a different material than the second portion.
  • spring tongues may be provided from spring steel, which engage in the recess 19, wherein the spring tongues or similar locking elements are accommodated in plastic, which forms the first portion.
  • the second portions 15, 26 may also have an insert made of elastic metal.
  • the second section 15, 26 was subsequently attached to the bearing ring 2, 3. It can also be provided that the second portion is first attached to the bearing ring 2.3, for example by encapsulating the bearing ring 2, 3 with a plastic, wherein the second portion can protrude beyond the end face 14, and that at a later time the first portion is attached to the second portion, for example, by inserting the first portion into a groove or receptacle located in the projection.
  • the second section which is fixed to the outer lateral surface 10, 11, to rest elastically prestressed on this lateral surface.
  • the second portion is firmly connected by the encapsulation with the outer lateral surface 10, 11.
  • the term 'sealing element' should also include elements such as slingers, etc., so that the above-described sealing element 7 may optionally be provided in addition to a further, the sealing of the bearing 1 serving element.

Landscapes

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

Abstract

La présente invention concerne un élément partiel (8, 9) pour un élément d'étanchéité (7) d'un roulement (1), lequel élément d'étanchéité est doté d'une bague de roulement (2, 3). L'élément d'étanchéité (7) peut être fixé à la bague de roulement (2, 3). L'élément partiel comprend une première section (13, 25) qui s'étend principalement en direction radiale et une seconde section (15, 26) qui s'étend principalement en direction axiale. L'objectif de l'invention est de proposer un élément d'étanchéité pour un roulement qui soit facile à installer et qui occupe un minimum de place. Cet objectif est atteint au moyen de l'élément partiel susmentionné (8, 9), par le fait que la première section (13, 25) chevauche au moins partiellement une face (14) de la bague de roulement (2, 3) et est notamment en contact avec ladite face (14), et que la seconde section (15, 26) peut être fixée à une surface périphérique extérieure (10, 11) de la bague de roulement (2, 3). L'invention concerne également un élément d'étanchéité (7) et un roulement (1) comprenant un élément d'étanchéité (7).
PCT/DE2009/000194 2008-03-04 2009-02-11 Élément partiel pour un élément d'étanchéité d'un roulement WO2009109162A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008012488.5 2008-03-04
DE102008012488A DE102008012488A1 (de) 2008-03-04 2008-03-04 Teilelement für ein Dichtelement eines Lagers

Publications (2)

Publication Number Publication Date
WO2009109162A2 true WO2009109162A2 (fr) 2009-09-11
WO2009109162A3 WO2009109162A3 (fr) 2009-11-19

Family

ID=40942415

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/000194 WO2009109162A2 (fr) 2008-03-04 2009-02-11 Élément partiel pour un élément d'étanchéité d'un roulement

Country Status (2)

Country Link
DE (1) DE102008012488A1 (fr)
WO (1) WO2009109162A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2368055A1 (fr) * 2008-12-23 2011-09-28 Aktiebolaget SKF Ensemble palier
DE102013002490B3 (de) * 2013-02-13 2014-02-27 CBSG 3D freiform GmbH Dichtungsanordnung zum berührungsfreien Abdichten von Wälzlagern
CN106402164A (zh) * 2015-07-29 2017-02-15 斯凯孚公司 滚动轴承单元
US20180050564A1 (en) * 2016-08-22 2018-02-22 Dt Swiss Inc. Hub and hub series
GB2594508A (en) * 2020-04-30 2021-11-03 Edwards Ltd Labyrinth seal for sealing a bearing of a scroll pump and a scroll pump
CN114729669A (zh) * 2020-02-13 2022-07-08 舍弗勒技术股份两合公司 具有密封件的滚动轴承

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1919431A1 (de) * 1968-04-22 1969-10-30 Skf Svenska Kullagerfab Ab Waelzlageranordnung
US3519316A (en) * 1967-06-16 1970-07-07 Skf Svenska Kullagerfab Ab Rolling bearing unit
US4872770A (en) * 1989-04-20 1989-10-10 The Torrington Company Antifriction bearing with seal arrangement
EP0737821A1 (fr) * 1995-04-10 1996-10-16 The Timken Company Joint d'étanchéité pour palier

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7308303U (de) 1972-03-06 1973-06-14 Rulmeca Spa Schutzdichtung, insbesondere fur Lager an Wellen von Forderbandrollen
DE8511679U1 (de) 1985-04-19 1985-05-30 Ziller & Co, 4010 Hilden Wälzlagerabdichtung
DE3516131A1 (de) 1985-05-04 1986-11-06 Neuweg Fertigung GmbH für Präzisionstechnik, 7932 Munderkingen Einstellbares waelzlager fuer hohe drehzahlen und besonders extreme schmutzbelastungen
DE8708234U1 (de) 1987-06-11 1987-07-30 SKF GmbH, 8720 Schweinfurt Berührungsfreie Abdichtung eines Lagers
FI990050A0 (fi) 1999-01-13 1999-01-13 Valmet Corp Sokkelotiiviste ja menetelmä sen asentamiseksi
DE102004058904A1 (de) 2004-12-07 2006-06-22 Ab Skf Wälzlagereinheit
DE102006025580A1 (de) 2006-06-01 2007-12-06 Schaeffler Kg Wälzlager

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519316A (en) * 1967-06-16 1970-07-07 Skf Svenska Kullagerfab Ab Rolling bearing unit
DE1919431A1 (de) * 1968-04-22 1969-10-30 Skf Svenska Kullagerfab Ab Waelzlageranordnung
US4872770A (en) * 1989-04-20 1989-10-10 The Torrington Company Antifriction bearing with seal arrangement
EP0737821A1 (fr) * 1995-04-10 1996-10-16 The Timken Company Joint d'étanchéité pour palier

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2368055A1 (fr) * 2008-12-23 2011-09-28 Aktiebolaget SKF Ensemble palier
DE102013002490B3 (de) * 2013-02-13 2014-02-27 CBSG 3D freiform GmbH Dichtungsanordnung zum berührungsfreien Abdichten von Wälzlagern
CN106402164A (zh) * 2015-07-29 2017-02-15 斯凯孚公司 滚动轴承单元
US10024363B2 (en) * 2015-07-29 2018-07-17 Aktiebolaget Skf Rolling bearing assembly
US20180050564A1 (en) * 2016-08-22 2018-02-22 Dt Swiss Inc. Hub and hub series
EP3287298A1 (fr) * 2016-08-22 2018-02-28 DT Swiss AG Moyeu et série de moyeux
CN114729669A (zh) * 2020-02-13 2022-07-08 舍弗勒技术股份两合公司 具有密封件的滚动轴承
US12066055B2 (en) 2020-02-13 2024-08-20 Schaeffler Technologies AG & Co. KG Roller bearing with a seal
GB2594508A (en) * 2020-04-30 2021-11-03 Edwards Ltd Labyrinth seal for sealing a bearing of a scroll pump and a scroll pump

Also Published As

Publication number Publication date
DE102008012488A1 (de) 2009-09-17
WO2009109162A3 (fr) 2009-11-19

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