WO2011015176A1 - Dispositif d'étanchéité pour un palier de rotation - Google Patents

Dispositif d'étanchéité pour un palier de rotation Download PDF

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Publication number
WO2011015176A1
WO2011015176A1 PCT/DE2010/000823 DE2010000823W WO2011015176A1 WO 2011015176 A1 WO2011015176 A1 WO 2011015176A1 DE 2010000823 W DE2010000823 W DE 2010000823W WO 2011015176 A1 WO2011015176 A1 WO 2011015176A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
bearing
sealing element
rotary
sealing device
Prior art date
Application number
PCT/DE2010/000823
Other languages
German (de)
English (en)
Inventor
Rudolf Zeidlhack
Tim LÖSCHNER
Original Assignee
Schaeffler Technologies Gmbh & 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 Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2011015176A1 publication Critical patent/WO2011015176A1/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
    • F16C33/30—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
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing 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
    • F16C33/72—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
    • 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
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • F16J15/3264—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals the elements being separable from each other
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3456—Pressing means without external means for pressing the ring against the face, e.g. slip-ring with a resilient 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
    • 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
    • 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
    • F16C19/34—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 both radial and axial load
    • F16C19/38—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 both radial and axial load with two or more rows of rollers
    • 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
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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

Definitions

  • the invention is in the field of mechanical engineering and tribology, that is the surface design with special consideration of wear phenomena.
  • Rotary actuators of this type can, for example, be designed as radial or axial bearings and be present either in the form of plain bearings or roller bearings.
  • a rolling bearing which is sealed by an elastic sealing lip, which covers the space between the two bearing rings and is attached to a first of the bearing rings.
  • the sealing lip is the continuation of an elastic, rectangular in cross-section strand, which is inserted into the groove of a bearing ring.
  • the sealing lip touches on the mating ring a sealing surface of an inserted sealing layer, which is optimized for the requirements of the seal in rubbing contact.
  • the main disadvantage of this known sealing device is that the sealing lip is pressed directly perpendicular to the contact surface of the mating ring and rests there rubbing and sealing. This can be a problem when the bearing rings are slightly tilted against each other by stressing the bearing, since then on the side of the sealing device, the sealing lip under higher pressure, the corresponding frictional forces between the sealing lip and the counter surface increase and the region of the sealing lip, the Gasket is applied, changes.
  • the present invention is based on the background of the prior art, the task to provide a sealing device, the reliable and with low frictional forces a rotary bearing seals and in particular compensates for tilting or displacements of the bearing rings against each other.
  • the object is achieved with the features of the invention according to the patent claim 1 or claim 2.
  • a first and a second rotary element which may be formed, for example, as a bearing rings. These are rotatable about an axis of rotation against each other, in the case of a plain bearing without the interposition of rolling elements, otherwise with the interposition of rolling elements, which may be formed, for example, as balls or rollers.
  • the first rotary element is associated with a first sealing element while the second rotary element is associated with a second sealing element.
  • the first sealing element has a first elastic sealing lip, which bears sealingly and transversely to the axis of rotation on a transverse to the axis of rotation sealing surface of the second sealing element. This means that the sealing lip in the case of a radial bearing in the radial direction of the bearing on the counter surface, that is, the sealing surface of the second sealing element is displaceable.
  • This tilting of the sealing elements / bearing rings can be compensated without the sealing lip lifts off the sealing surface or is deformed substantially elastic compared to the ideal state.
  • the first sealing element is applied exclusively
  • the first sealing element bears sealingly against a correspondingly aligned sealing surface of the second sealing element with a first elastic sealing lip and is displaceable on the sealing surface in parallel with the axis of rotation in order to compensate for tilting of the bearing.
  • the sealing device provides that the first sealing element has a first and a second elastic sealing lip, the pliers like attack on two sealing surfaces of the second sealing element, which are opposite to each other on the second sealing element, wherein the sealing lips relative to the sealing surfaces in Trap of a radial bearing substantially perpendicular to the axis of rotation, in the case of an axial bearing substantially parallel to the axis of rotation of the bearing are displaceable.
  • the provision of two sealing lips creates an additional sealing barrier for the bearing, which further improves the partitioning towards the bearing exterior. Due to the forceps-like configuration, the pressure forces of the individual sealing lips can be oriented in opposite directions toward or away from one another so that the forces on the first and second sealing elements are neutralized. In a tilting movement of the rotary elements against each other when the support of one of the sealing lips is less solid, the other sealing lip is pressed correspondingly stronger against its corresponding counter surface, so that a good seal of the bearing is guaranteed in each case.
  • corresponding sealing elements may also be provided in pairs on both sides of the rolling elements or sliding surfaces in order to seal the bearing on both sides.
  • the sealing lips each have legs which extend in mirror-symmetrical relationship to each other substantially in the cross-section of the first sealing element.
  • the thighs can also at least partially advantageously parallel to each other.
  • the second sealing element is formed by a web.
  • the two sealing lips engage on both sides of the web on this and are pressed resiliently against each other by means of mutually directed pressure forces on the web.
  • the web can be designed, for example, as a round or rectangular profile or as a triangular or polygonal prismatic profile and consist of steel, in particular hardened steel or highly tempered steel, for example as a drawn round steel, or an otherwise hardened metal alloy.
  • the web is advantageously particularly smoothed to minimize friction.
  • the web can be inserted into a groove in the first rotary element, and soldered into this, glued or held in this elastic in a press fit.
  • the strand of the second sealing element is advantageously closed annularly and connected at the ends, for example by soldering, gluing or welding.
  • the second sealing element may also be formed as a groove extending, for example, in a component inserted in the second rotary element.
  • the component may consist of a suitable material such as hardened steel.
  • the legs of the first sealing element are designed in the form of a spreading forceps and the pressure forces on the side walls of the groove are directed away from one another.
  • the first sealing element is preferably made of an organic material, in particular of a rubber or rubber-like material. It may, for example, also consist of polyamide or PEEK, a thermoplastic polymer or another suitable plastic. It may be closed annularly preferably by gluing the ends.
  • a reinforcing element which consists of a stiffer material than the first sealing element, for example of a metal, can be integrated into the first sealing element.
  • the reinforcing element may be formed, for example, as a metal clip, the legs of which may advantageously extend to the legs of the first sealing element or even partially into it.
  • the first sealing element is preferably produced as a strand, closed annularly and the ends of the sealing element are advantageously connected to each other by gluing or vulcanization.
  • the invention relates, in addition to a sealing device as described above, to a bearing with a sealing device, which is formed according to the features of the invention described.
  • the invention also relates to a method for producing a bearing with a sealing device as described above, in which initially the rotary elements are completed and treated end and in which thereafter the sealing elements are inserted.
  • the sealing elements can be made of suitable materials, which are resistant to wear in particular against sliding friction. In addition, they can be particularly resistant to corrosion, since they are at least partially exposed to the environmental influences from the warehouse exterior.
  • the second sealing element can therefore for example consist of a stainless, highly tempered and hardened steel. It can thus be used for the profiles of the first and second sealing element cost-prefabricated by the meter, which is bent and cut to length on suitable machines, after which the joints are connected and the joints are smoothed.
  • Another advantage of the invention is that the sealing elements can be replaced independently of the rotating elements.
  • FIG. 2 shows the installation of a first sealing element on a second one in FIG
  • Figure 3 shows the system of the sealing elements of Figure 2 in a tilted
  • FIG. 4 shows another embodiment of a bearing in cross section
  • FIG. 5 in cross-section, a radial / axial bearing with double-sided seal
  • Figure 1 shows in a cross section a bearing with two formed as a bearing rings rotary elements 1, 2, wherein the first rotary member is denoted by 1, the second rotary member with 2.
  • the first rotary member / bearing ring is on both sides of the rolling elements 3 each have a first sealing element 4a, which consists of a rubber-like material and is inserted in a circumferential groove of the first bearing ring 1.
  • the first sealing element 4 is a respective second sealing element 5,5a arranged opposite one another and assigned to the second rotary element 2.
  • the second sealing element 5, 5a is formed as a circular cross-section round strand-shaped steel profile, which is also inserted into a circumferential groove of the second rotary member 2.
  • the bearing shown may be formed for example as a radial bearing.
  • the axis of rotation is shown schematically in broken representation in the lower part of the figure and denoted by 6.
  • the bearing can also be designed as a thrust bearing, in which case the axis of rotation runs perpendicular to the bearing rings and is shown in an interrupted representation and provided with the reference numeral 6 '.
  • a rolling element is shown in the form of a sphere and designated 3.
  • the ball 3 rolls between the bearing surfaces 8 and 9, wherein the Lager perennialkonstellation is sealed off by the sealing elements 4,4a, 5,5a from the outside of the warehouse.
  • sealing elements 4, 4a, 5, 5a are provided, which cause a foreclosure on both sides of the bearing and are advantageously of identical construction.
  • the interaction and the contact between the first sealing element 4 and the second sealing element 5 are shown only schematically and geometrically inaccurate in FIG. A more detailed representation can be seen from FIG.
  • the first sealing element 4 which has two sealing lips 16, 16a, which bear against the web 5 on both sides, which constitutes the second sealing element.
  • the pressing forces of the sealing lips 16, 16a are directed towards one another inwardly and represented by the arrows 20, 20a.
  • the sealing device can also have only one of the sealing lips 16, 16a. It is important that the sealing lip relative to the web 5 in the direction of the arrow 21 is displaceable and thus relative movements of the rotary elements 1, 2, in particular tilting movements against each other without significant change in the pressing force on the web 5 can compensate.
  • FIGS. 2 and 3 additionally show a reinforcing profile 7 made of metal, which is integrated in the sealing element 4 and extends into the legs 30, 30a of the sealing lips 16, 16a.
  • FIG. 3 shows a position in which the first sealing element 4 is tilted counterclockwise relative to the second sealing element 5 by an angle ⁇ , which is approximately a tilting of the first bearing ring 1 relative to the second bearing ring 2 in the direction of the arrow 22 in Figure 1 corresponds. Simultaneously with the tilting movement of the sealing elements against each other, a shift of the first sealing element 4 to the second sealing element 5 occurs. On the opposite side of the rolling elements 3 is done according to the figure 1 between the sealing elements 4a, 5a a kind of tilting, wherein the first sealing element 4a there is a little away from the second sealing element 5a. However, this displacement movement is compensated without Schwierigkei- by a relative displacement of the sealing lips 16, 16a relative to the web 5 without the pressure forces change noticeably. A seal is thus still ensured.
  • FIG. 4 shows a configuration in which the first sealing elements 4, 4a have sealing lips with legs that diverge from each other, each of which surround a web 5, 5a with a rectangular cross-section.
  • the side surfaces of the second sealing elements 5, 5a are substantially parallel to the axis of rotation or coaxial to this, with angular deviations, which should also be a maximum of +/- 30 °.
  • FIG. 5 shows an embodiment in which the sealing devices 4, 4a, 5, 5a according to the invention are used in a radial bearing.
  • rolling elements 25, 26 are provided there between the first rotary member 1 and the second rotary member 2 obliquely mounted rolling elements 25, 26 are provided there. Since these have a space requirement, which goes laterally beyond the extension of the first rotary element 1 addition, a web 27, 28 attached to this and attached, for example by means of a screw, in the circumferential web 27, 28 each within a groove, the first sealing elements 4, 4a are recessed. These act as described above in a similar manner with the second sealing elements 5, 5a together. Despite the necessary additional webs 27,28 the total cost and space requirements of the bearing including the seal is minimized.
  • FIG. 6 shows the embodiment of a bearing with two first sealing elements 4, 4a and two second sealing elements, each of which is designed as an annular component 32 having a groove 31, 31a.
  • the sealing lips of the first sealing elements lie against the walls of the grooves.
  • a bearing is shown in cross-section with first sealing elements 4, 4a, each of which faces a second sealing element 17, 17a in the form of a prism-shaped strand.
  • the prism is rectangular in cross-section, wherein a rectangular part of the prism is embedded in a groove of the second rotary element and a symmetrical roof-like double bevel is available as a contact surface for the sealing lips of the first sealing elements 4,4a.
  • the invention allows, in particular pliers-like design of the first sealing element and corresponding formation of two sealing points on both sides of the bearing hermetic encapsulation of bearings, which is insensitive to tilting of the bearing parts both in their sealing effect and in the development of frictional forces.
  • the friction partners of the sealing device are independent of the rotary elements / bearing rings manufactured and optionally also independently of these replaceable. LIST OF REFERENCE NUMBERS

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

Abstract

L'invention concerne un dispositif d'étanchéité pour un palier radial ou axial dans lequel un premier et un deuxième élément rotatifs (1, 2) sont placés de manière à tourner en sens inverse autour d'un axe de rotation avec ou sans intercalage de corps de roulement (3), comprenant un premier élément d'étanchéité (4, 4a) associé au premier élément rotatif (1) et un deuxième élément d'étanchéité (5, 5a, 31, 31a, 32) associé au deuxième élément rotatif (2), le premier élément d'étanchéité présentant une première et une deuxième lèvre d'étanchéité (16, 16a) qui se plaquent à la manière d'une pince sur deux surfaces d'étanchéité du deuxième élément d'étanchéité (5, 5a), lesquelles sont opposées sur le deuxième élément d'étanchéité, et les lèvres d'étanchéité pouvant être déplacées par rapport aux surfaces d'étanchéité, dans le cas d'un palier radial, de manière pratiquement perpendiculaire à l'axe de rotation (6) et, dans le cas d'un palier axial, de manière pratiquement parallèle à l'axe de rotation (6').
PCT/DE2010/000823 2009-08-01 2010-07-15 Dispositif d'étanchéité pour un palier de rotation WO2011015176A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009035739.4 2009-08-01
DE102009035739A DE102009035739A1 (de) 2009-08-01 2009-08-01 Dichtungseinrichtung für ein Drehlager

Publications (1)

Publication Number Publication Date
WO2011015176A1 true WO2011015176A1 (fr) 2011-02-10

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WO (1) WO2011015176A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10034949B2 (en) 2012-06-20 2018-07-31 Sk Chemicals Co., Ltd. Polyvalent pneumococcal polysaccharide-protein conjugate composition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4030073B1 (fr) * 2021-01-19 2023-09-20 Siemens Gamesa Renewable Energy A/S Unité de palier pour une unité de rotor d'une éolienne et éolienne

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2277810A (en) * 1940-01-06 1942-03-31 Fafnir Bearing Co Bearing seal
US2600434A (en) * 1950-06-06 1952-06-17 Saywell Associates Sealing device
US2655392A (en) * 1949-07-02 1953-10-13 Hoover Ball & Bearing Co Shielded antifriction bearing
US3010771A (en) * 1959-07-13 1961-11-28 Acme Ball Bearing & Mfg Co Bearing assembly
FR1281749A (fr) * 1960-02-29 1962-01-12 Hermann Kolb Maschinenfabrik G Procédé pour fermer les roulements à billes d'une manière étanche
DE1169214B (de) * 1961-06-29 1964-04-30 August Claas Dr Abdichtung von Waelzlagern
US3203740A (en) * 1963-04-15 1965-08-31 Federal Mogul Bower Bearings Bearing seal
FR1568654A (fr) * 1967-06-16 1969-05-23
FR2471511A1 (fr) * 1979-12-12 1981-06-19 Skf Kugellagerfabriken Gmbh Dispositif d'etancheite pour roulements, constitue par un flasque fixe sur une bague de roulement et par une bague d'etancheite montee sur l'autre bague de roulement
DE3602051A1 (de) 1986-01-24 1987-07-30 Schaeffler Waelzlager Kg Waelzlager-drehverbindung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2277810A (en) * 1940-01-06 1942-03-31 Fafnir Bearing Co Bearing seal
US2655392A (en) * 1949-07-02 1953-10-13 Hoover Ball & Bearing Co Shielded antifriction bearing
US2600434A (en) * 1950-06-06 1952-06-17 Saywell Associates Sealing device
US3010771A (en) * 1959-07-13 1961-11-28 Acme Ball Bearing & Mfg Co Bearing assembly
FR1281749A (fr) * 1960-02-29 1962-01-12 Hermann Kolb Maschinenfabrik G Procédé pour fermer les roulements à billes d'une manière étanche
DE1169214B (de) * 1961-06-29 1964-04-30 August Claas Dr Abdichtung von Waelzlagern
US3203740A (en) * 1963-04-15 1965-08-31 Federal Mogul Bower Bearings Bearing seal
FR1568654A (fr) * 1967-06-16 1969-05-23
FR2471511A1 (fr) * 1979-12-12 1981-06-19 Skf Kugellagerfabriken Gmbh Dispositif d'etancheite pour roulements, constitue par un flasque fixe sur une bague de roulement et par une bague d'etancheite montee sur l'autre bague de roulement
DE3602051A1 (de) 1986-01-24 1987-07-30 Schaeffler Waelzlager Kg Waelzlager-drehverbindung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10034949B2 (en) 2012-06-20 2018-07-31 Sk Chemicals Co., Ltd. Polyvalent pneumococcal polysaccharide-protein conjugate composition

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