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DE4142313A1 - Radial or axial rolling bearing of steel - with anti-corrosion coating of electroplated zinc@ alloy on running tracks - Google Patents

Radial or axial rolling bearing of steel - with anti-corrosion coating of electroplated zinc@ alloy on running tracks

Info

Publication number
DE4142313A1
DE4142313A1 DE4142313A DE4142313A DE4142313A1 DE 4142313 A1 DE4142313 A1 DE 4142313A1 DE 4142313 A DE4142313 A DE 4142313A DE 4142313 A DE4142313 A DE 4142313A DE 4142313 A1 DE4142313 A1 DE 4142313A1
Authority
DE
Germany
Prior art keywords
radial
zinc
alloy
roller bearing
corrosion coating
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.)
Granted
Application number
DE4142313A
Other languages
German (de)
Other versions
DE4142313C2 (en
Inventor
Karl-Ludwig Dipl Ing Grell
Reiner Woltmann
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
INA Waelzlager Schaeffler OHG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6447716&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE4142313(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Priority to DE9117069U priority Critical patent/DE9117069U1/en
Priority to DE4142313A priority patent/DE4142313C2/en
Priority to KR1019920024439A priority patent/KR100242577B1/en
Priority to CS923700A priority patent/CZ283740B6/en
Priority to JP4336964A priority patent/JP2886013B2/en
Priority to RO92-01584A priority patent/RO109771B1/en
Priority to RU9292004600A priority patent/RU2079740C1/en
Priority to BR9205068A priority patent/BR9205068A/en
Publication of DE4142313A1 publication Critical patent/DE4142313A1/en
Publication of DE4142313C2 publication Critical patent/DE4142313C2/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F16C33/34—Rollers; Needles
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • 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
    • F16C33/62—Selection of substances
    • 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
    • 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
    • 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
    • F16C19/02—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
    • F16C19/08—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 two or more rows of 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
    • F16C19/24—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
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/50—Alloys based on zinc
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/60—Thickness, e.g. thickness of coatings
    • 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
    • F16C2300/40—Application independent of particular apparatuses related to environment, i.e. operating conditions
    • F16C2300/42—Application independent of particular apparatuses related to environment, i.e. operating conditions corrosive, i.e. with aggressive media or harsh conditions
    • 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
    • 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
    • F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

Steel radial or axial rolling bearing, has an anti-corrosion coating of electroplated zinc alloy at least on the running tracks. In rolling bearings fitted with seals between the outer and inner rings, the seal lip contact surfaces are pref. coated with electroplated zinc alloy. The anti-corrosion coating consists of zinc-iron, zinc-nickel or zinc-cobalt alloy, with a thickness of 0.1 - 3.0 microns. USE/ADVANTAGE - Useful for rolling bearings of steel subject to attack by corrosive media to provide long term corrosion protection.

Description

Die Erfindung bezieht sich auf ein Radial- oder Axialwälzlager aus Stahl mit konzentrisch ineinander oder parallel zueinander angeord­ neten Laufringen bzw. -scheiben, zwischen deren einander zugewandten Laufflächen Wälzkörper abrollen.The invention relates to a radial or axial roller bearing Steel arranged concentrically in one another or parallel to one another Neten races or discs, between their facing each other Unroll rolling elements.

Radial- oder Axialwälzlager der vorgenannten Gattung sind allgemein bekannt. Werden derartige Wälzlager in Antriebselementen eingesetzt, die der Einwirkung von Säuren oder Salzwasser ausgesetzt sind, so tritt nach relativ kurzer Zeit an den wälzkörper- und dichtungsführen­ den Flächen Korrosion aus, die zur Zerstörung des Wälzlagers führt.Radial or axial roller bearings of the aforementioned type are general known. If such rolling bearings are used in drive elements, which are exposed to the effects of acids or salt water, so occurs after a relatively short time on the rolling element and seal guides the surfaces from corrosion, which leads to the destruction of the rolling bearing.

Die Aufgabe der Erfindung besteht darin, Korrosion an den Wälzlager­ bauteilen zu verhindern, wobei die Korrosionsschutzmaßnahme eine hohe Standzeit haben soll.The object of the invention is corrosion on the rolling bearing prevent components, the corrosion protection measure a high Should have service life.

Diese Aufgabe wird nach dem Kennzeichen des Anspruchs 1 erfindungs­ gemäß dadurch gelöst, daß zumindest die Laufflächen mit einer Korro­ sionsschutzbeschichtung aus einer galvanischen Zink-Legierung versehen sind. Durch eine derartige halbharte Beschichtung der Laufflächen und gegebenenfalls der übrigen Oberfläche des Wälzlagers wird ein außer­ ordentlich wirksamer Korrosionsschutz erzielt. Dabei bleibt die tribo­ logische Beanspruchung, wie Wälzlagerüberrollung ohne negative Folgen für die Lebensdauer der Beschichtung. Bei dieser Beanspruchung der äußersten Randzone drücken sich die duktilen Legierungsschichten in das vorhandene Rauhigkeitsprofil der Laufflächen ein und haften dort fest. Die überschüssigen Schichtanteile werden während des Betriebs aus der Druckzone der Laufflächen herausgequetscht. Dadurch ist nach kurzer Einlaufzeit, die nur in wenigen Zyklen stattfindet, ein voll funktionsfähiges Wälzlager mit hohen Korrosionsschutzeigenschaften gegeben. Die Wälzermüdungsfestigkeit wird durch die beschriebenen Vorgänge des Einwälzens in die Rauhigkeitstiefe nicht verschlechtert, sondern verbessert.This object is fiction, according to the characterizing part of claim 1 solved according to that at least the treads with a Korro sion protection coating made of a galvanic zinc alloy are. By such a semi-hard coating of the treads and if necessary, the rest of the surface of the rolling bearing becomes an except achieved effective corrosion protection. The tribo remains logical stress, such as rolling bearing overruns without negative consequences for the life of the coating. With this strain the the ductile alloy layers express themselves in the extreme edge zone the existing roughness profile of the treads and stick there firmly. The excess layer shares are during operation squeezed out of the pressure zone of the treads. This is after  short running-in period, which only takes place in a few cycles, a full one functional rolling bearing with high corrosion protection properties given. The rolling fatigue strength is described by the Processes of rolling into the roughness depth not deteriorated, but improved.

Gemäß einer weiteren Ausgestaltung bezieht sich die Erfindung auf ein Radial- oder Axialwälzlager aus Stahl mit konzentrisch ineinander oder parallel zueinander angeordneten Laufringen bzw. -scheiben, zwischen deren einander zugewandten Laufflächen Wälzkörper abrollen, wobei zumindest einerseits der Wälzkörper am äußeren Laufring oder an einer der Laufscheiben ein Dichtring vorgesehen ist, dessen Dichtlippe mit einer Gegenfläche des inneren Laufringes, mit einer Gegenfläche einer mit dem inneren Laufring verbundenen Bordscheibe oder mit einer Gegenfläche der gegenüberliegenden Laufscheibe zusammenwirkt.According to a further embodiment, the invention relates to a Radial or axial roller bearings made of steel with one another concentrically or parallel races or discs, between their rolling surfaces facing each other roll rolling elements, whereby at least on the one hand the rolling element on the outer race or on one a sealing ring is provided, the sealing lip with the running disks a counter surface of the inner race, with a counter surface one with a flanged disk connected to the inner race or with a Counter surface of the opposite disc cooperates.

Ein Radialwälzlager dieser genannten Gattung ist aus der DE-GBM 9 00 528 bekannt. Dieses Radialwälzlager weist Bordscheiben beider­ seits der Wälzkörperreihen auf, wobei der am äußeren Laufring befe­ stigte Radialdichtring mit seiner Dichtlippe am äußeren Umfang der jeweiligen Bordscheibe anliegt. Darüberhinaus kann die Dichtlippe bei einer geänderten Ausbildung des Radialwälzlagers, die in dieser Druck­ schrift nicht dargestellt ist, bekanntlich auch unmittelbar am äußeren Umfang des inneren Laufrings anliegen. Ist dieses Radialwälzlager an seinem Äußeren Flüssigkeiten ausgesetzt, die Korrosion der aus Stahl hergestellten Teile hervorrufen, so treten insbesondere dann Probleme auf, wenn an dem jeweiligen Abschnitt Korrosion auftritt, an dem die Dichtlippe des Radialdichtrings anliegt. Dann nämlich kann die Radial­ dichtung nicht mehr ihre Funktion erfüllen und es tritt nach relativ kurzer Zeit ein Lagerschaden auf.A radial roller bearing of this type is from DE-GBM 9 00 528 known. This radial roller bearing has flanges of both on the part of the rolling element rows, the befe on the outer race radial seal with its sealing lip on the outer circumference of the the respective flanged washer. In addition, the sealing lip can a changed design of the radial roller bearing in this pressure Scripture is not shown, as is well known, directly on the outside Fit the circumference of the inner race. Is this radial roller bearing on its exterior exposed to liquids, the corrosion of steel cause produced parts, then problems occur in particular if corrosion occurs on the section where the Sealing lip of the radial sealing ring rests. Then namely the radial seal no longer perform its function and it occurs after relative bearing damage in a short time.

Erfindungsgemäß soll dabei nach dem kennzeichnenden Teil des unabhän­ gigen Anspruchs 2 die Gegenfläche mit einer Korrosionsschutzbeschich­ tung aus einer galvanischen Zink-Legierung versehen sein. Auf diese Weise wird Korrosion im Dichtlippenbereich verhindert, so daß die Funktionsfähigkeit des Lagers erhalten bleibt. According to the invention, according to the characteristic part of the independent right claim 2 the counter surface with a corrosion protection coating be made of a galvanic zinc alloy. To this Corrosion in the sealing lip area is prevented, so that the Functionality of the warehouse is maintained.  

Gemäß den Ansprüchen 3, 4 und 5 kann die Zink-Legierung alternativ als Zink-Nickel-, als Zink-Eisen- oder als Zink-Kobalt-Verbindung herge­ stellt sein.According to claims 3, 4 and 5, the zinc alloy can alternatively as Zinc-nickel, zinc-iron or zinc-cobalt compound poses.

In weiterer Ausgestaltung der Erfindung soll nach Anspruch 6 die Korrosionsschutzbeschichtung eine Schichtdicke von 0,1 bis 3,0 µm aufweisen. Diese Schichtdicken bewegen sich in der Größenordnung der Oberflächenrauhigkeit an Wälzlagerbauteilen. Dadurch wird erreicht, daß sich bei Inbetriebnahme des Wälzlagers die galvanische Schicht völlig in das Rauhheitsprofil der Oberfläche einarbeitet und damit keinen negativen Einfluß auf die Toleranzen der Bauteile ausüben kann. Durch den feinsten Abrieb innerhalb der Rauhigkeitstiefe der Wälz­ lagerlaufbahn werden Schichtpartikel eingewalzt, die den Rostschutz der Laufbahn und somit des Wälzlagers erhöhen und eine Art Notlauf bzw. Trockenschmierung darstellen. Aufgrund der geringen Schichtdicken läßt sich auch die Umweltbelastung reduzieren.In a further embodiment of the invention according to claim 6 Corrosion protection coating a layer thickness of 0.1 to 3.0 µm exhibit. These layer thicknesses are of the order of magnitude Surface roughness on rolling bearing components. This ensures that the galvanic layer is present when the rolling bearing is started up completely incorporated into the roughness profile of the surface and thus cannot have a negative influence on the tolerances of the components. Due to the finest abrasion within the roughness depth of the roller Layer is rolled into the bearing raceway, which protects against rust increase the track and thus the rolling bearing and a kind of emergency run or dry lubrication. Because of the thin layers the environmental impact can also be reduced.

Darüberhinaus besteht aber die Möglichkeit, eine Korrosionsschutz­ beschichtung mit einer Schichtdicke von 3,0 bis 9,0 µm an den Laufbah­ nen oder der Gegenfläche des Radialdichtringes zu verwenden. Bei einer derartigen Schichtdicke der Korrosionsschutzbeschichtung kann deren Lebensdauer bei hoher tribologischer Belastung auf ein Maximum ausge­ legt werden. Schließlich soll gemäß Anspruch 8 die Korrosionsschutz­ beschichtung als obere Schicht eine Gelb-Chromatierung aufweisen. Durch den Nickel- oder Eisenanteil in der Zinkbeschichtung und die Verwendung dieser chromatierten Ausführung werden deren Festigkeit und Härte von ca. 60 HV auf ca. 300 HV erhöht, also deren Abriebfestigkeit um ein Mehrfaches gesteigert.In addition, there is the possibility of corrosion protection coating on the raceway with a layer thickness of 3.0 to 9.0 µm NEN or the counter surface of the radial sealing ring. At a Such layer thickness of the anti-corrosion coating can Lifespan maximized at high tribological loads be placed. Finally, according to claim 8, the corrosion protection have a yellow chromate coating as the upper layer. Due to the nickel or iron content in the zinc coating and the Using this chromated version, its strength and Hardness increased from approx. 60 HV to approx. 300 HV, i.e. their abrasion resistance increased by a multiple.

Die Erfindung ist nicht nur auf die Merkmale der Ansprüche beschränkt. Es ergeben sich vielmehr Kombinationsmöglichkeiten einzelner An­ spruchsmerkmale sowie der in den Vorteilsangaben und zu den darge­ stellten Ausgestaltungsbeispielen offenbarten Merkmale.The invention is not limited only to the features of the claims. Rather, there are possible combinations of individual items characteristics of the award, as well as in the information on benefits and on the darge provided design examples disclosed features.

Zur Erläuterung der Erfindung wird auf die Zeichnung verwiesen, in der drei unterschiedliche Ausgestaltungsbeispiele vereinfacht dargestellt sind. Es zeigen: To explain the invention reference is made to the drawing in which three different design examples are shown in simplified form are. Show it:  

Fig. 1 eine Teilansicht eines einreihigen Radialkugellager im Längsschnitt, dessen innerer und äußerer Laufring mit einer Korrosionsschutzbeschichtung versehen sind, Fig. 1 is a partial view of a single-row radial ball bearing in longitudinal section, the inner and outer race are provided with a corrosion protective coating,

Fig. 2 einen Längsschnitt durch ein Zylinderrollenlager mit winkelförmigen Bordscheiben und Fig. 2 shows a longitudinal section through a cylindrical roller bearing with angular flanges and

Fig. 3 eine Teilansicht eines zweireihigen Radialkugellagers im Längsschnitt mit stirnseitiger Abdichtung über Radi­ aldichtringe. Fig. 3 is a partial view of a double-row radial ball bearing in longitudinal section with sealing on the front via radi aldichtringe.

In der Fig. 1 ist mit 1 ein einreihiges Radialkugellager bezeichnet, das aus einem inneren Laufring 2, einem äußeren Laufring 3, einem Wälzkörperkranz 4 und einem Käfig 5 besteht. Die Wälzkörper des Wälz­ körperkranzes 4 rollen dabei zwischen einander zugewandten rillenför­ migen Laufflächen 7 und 8 des inneren und äußeren Laufrings 2 und 3 ab. Erfindungsgemäß sind sowohl der innere Laufring 2 als auch der äußere Laufring 3 an ihrer gesamten Oberfläche mit einer Korrosions­ schutzbeschichtung 6 aus einer Zink-Verbindung versehen. Diese vor­ zugsweise aus Zink-Nickel, Zink-Eisen oder Zink-Kobalt hergestellte Korrosionsschutzbeschichtung 6 ist auch innerhalb der rillenförmigen Laufflächen 7 und 8 angeordnet und kann eine Schichtdicke von etwa 0,1 bis 3,0 µm aufweisen. Darüber hinaus besteht aber auch die Möglichkeit, Schichtdicken vorzusehen, die größer als 3,0 um stark sind, wobei eine obere Begrenzung der Schichtdicke bei etwa 9,0 µm liegt.In Fig. 1, 1 denotes a single-row radial ball bearing, which consists of an inner race 2 , an outer race 3 , a roller ring 4 and a cage 5 . The rolling elements of the rolling ring body 4 roll between facing rillenför shaped treads 7 and 8 of the inner and outer races 2 and 3 . According to the invention, both the inner race 2 and the outer race 3 are provided on their entire surface with a corrosion protection coating 6 made of a zinc compound. This preferably made of zinc-nickel, zinc-iron or zinc-cobalt corrosion protection coating 6 is also arranged within the groove-shaped treads 7 and 8 and can have a layer thickness of about 0.1 to 3.0 microns. In addition, however, there is also the possibility of providing layer thicknesses that are greater than 3.0 μm thick, an upper limit of the layer thickness being approximately 9.0 μm.

In der Fig. 2 ist mit 9 ein zweireihiges Zylinderrollenlager bezeich­ net, welches aus einem inneren Laufring 10 und einem dazu konzentrisch angeordneten äußeren Laufring 11 besteht. Die beiden Laufringe 10 und 11 weisen einander gegenüberliegende Laufflächen 12 und 13 auf, zwi­ schen denen zwei Reihen zylindrischer Wälzkörper 14 angeordnet sind. Zur Führung der zylindrischen Wälzkörper 14 sind im äußeren Laufring 11 Borde 15 und 16 vorgesehen, während die beiden Reihen von Wälzkör­ pern im inneren Laufring 10 durch winkelförmige Bordscheiben 17 und 18 geführt sind. Diese Bordscheiben 17 und 18 bilden an ihrem äußeren Umfang eine Gegenfläche 19 für Radialdichtringe 20 und 21. Jeder dieser Radialdichtringe 20 und 21 ist an seinem äußeren Umfang dich­ tend in den äußeren Laufring 11 eingesetzt und weist jeweils eine Dichtlippe 22 auf, die elastisch vorgespannt auf der Gegenfläche 19 der jeweiligen Bordscheibe 17 bzw. 18 gleitet. Erfindungsgemäß ist die Gegenfläche 19 mit einer Korrosionsschutzbeschichtung 23 aus einer Zink-Nickel-Legierung versehen, die ebenfalls vorzugsweise eine Schichtdicke von 0,1 bis 3,0 µm aufweisen soll. Die Schichtdicke kann aber bis zu maximal 9,0 µm aufweisen. Mit dieser Schutzbeschichtung an der Gegenfläche wird ein Unterrosten der Radialdichtringe 20 und 21 verhindert, das andernfalls die Abdichtung des zweireihigen Zylin­ derrollenlagers zerstören würde. Die auf die Gegenfläche 19 aufge­ brachte z. B. Zink-Nickel-Beschichtung bietet einen guten Korrosions­ schutz und weist eine lange Lebensdauer auf.In Fig. 2, 9 is a two-row cylindrical roller bearing, which consists of an inner race 10 and an outer race 11 arranged concentrically therewith. The two races 10 and 11 have opposing treads 12 and 13 , between which two rows of cylindrical rolling elements 14 are arranged. To guide the cylindrical rolling elements 14 11 ridges 15 and 16 are provided in the outer race, while the two rows of Wälzkör pern in the inner race 10 are guided by angular flanges 17 and 18 . These flanges 17 and 18 form on their outer circumference a counter surface 19 for radial sealing rings 20 and 21 . Each of these radial sealing rings 20 and 21 is inserted on its outer circumference in the outer race 11 and each has a sealing lip 22 which slides elastically preloaded on the counter surface 19 of the respective flanged plate 17 and 18 , respectively. According to the invention, the counter surface 19 is provided with a corrosion protection coating 23 made of a zinc-nickel alloy, which should also preferably have a layer thickness of 0.1 to 3.0 μm. However, the layer thickness can have a maximum of 9.0 µm. With this protective coating on the counter surface, rusting of the radial sealing rings 20 and 21 is prevented, which would otherwise destroy the seal of the double-row cylindrical roller bearing. The brought up on the counter surface 19 z. B. Zinc-nickel coating offers good corrosion protection and has a long service life.

Schließlich ist noch in Fig. 3 ein zweireihiges Radialkugellager 24 dargestellt, das einen äußeren Laufring 25 und einen inneren Laufring 26 mit dazwischen angeordneten Wälzkörperkränzen 27 und 28 aufweist. Diese Wälzkörperkränze 27 und 28 rollen in rillenförmigen Laufflächen 29 und 30 ab. Jeweils stirnseitig ist im äußeren Laufring 25 ein Radialdichtring 31 bzw. 32 befestigt, dessen beiden Dichtlippen 33 und 34 auf Gegenflächen 35 und 36 des inneren Laufrings 26 gleiten. Diese Gegenflächen 35 und 36 des inneren Laufrings 26 sind erfindungsgemäß mit einer Korrosionsschutzbeschichtung 37 aus einer Zink-Verbindung versehen. Auch in diesem Fall wird ein Unterrosten des Dichtverbands, der andernfalls zum Eindringen von Schmutz in das Innere des Radialku­ gellagers führen würde, verhindert.Finally, a double-row radial ball bearing 24 is shown in FIG. 3, which has an outer race 25 and an inner race 26 with rolling element rings 27 and 28 arranged between them. These rolling element rings 27 and 28 roll in groove-shaped running surfaces 29 and 30 . A radial sealing ring 31 and 32 , the two sealing lips 33 and 34 of which slide on mating surfaces 35 and 36 of the inner race 26, are fastened on each end in the outer race 25 . According to the invention, these counter surfaces 35 and 36 of the inner race 26 are provided with a corrosion protection coating 37 made of a zinc compound. In this case, too, rusting of the sealing bandage, which would otherwise lead to the penetration of dirt into the interior of the radial ball bearing, is prevented.

Die Erfindung ist nicht nur auf die in den drei Ausgestaltungsbeispie­ len dargestellten Anwendungsfälle beschränkt. Darüberhinaus kann auch bei Linearkugellagern insgesamt oder nur im Bereich von deren Abdich­ tungen, also an entsprechenden Gegenflächen der Dichtungen eine Korro­ sionsschutzbeschichtung aus einer binären oder sogar ternären Legie­ rung vorgesehen sein. The invention is not only based on those in the three exemplary embodiments len illustrated use cases limited. It can also for linear ball bearings as a whole or only in the area of their sealing lines, i.e. on the corresponding counter surfaces of the seals, a corrosion sion protection coating from a binary or even ternary alloy tion should be provided.  

BezugszahlenlisteList of reference numbers

 1 einreihiges Radiallkugellager
 2 innerer Laufring
 3 äußerer Laufring
 4 Wälzkörperkranz
 5 Käfig
 6 Korrosionsschutzbeschichtung
 7 Lauffläche von 2
 8 Lauffläche von 3
 9 zweireihiges Zylinderrollenlager
10 innerer Laufring
11 äußerer Laufring
12 Lauffläche von 10
13 Lauffläche von 11
14 Reihen von Wälzkörpern
15 Bord von 11
16 Bord von 11
17 Bordscheibe
18 Bordscheibe
19 Gegenfläche
20 Radialdichtring
21 Radialdichtring
22 Dichtlippe
23 Korrosionsschutzbeschichtung
24 zweireihiges Radialkugellager
25 äußerer Laufring
26 innerer Laufring
27 Wälzkörperkranz
28 Wälzkörperkranz
29 Lauffläche
30 Lauffläche
31 Radialdichtring
32 Radialdichtring
33 Dichtlippe
34 Dichtlippe
35 Gegenfläche
36 Gegenfläche
37 Korrosionsschutzbeschichtung 1 single row radial ball bearing
2 inner race
3 outer race
4 rolling element ring
5 cages
6 Corrosion protection coating
7 tread of 2
8 tread of 3
9 double row cylindrical roller bearings
10 inner race
11 outer race
12 tread of 10
13 tread of 11
14 rows of rolling elements
15 board of 11
16 board of 11
17 flanged wheel
18 flanged wheel
19 counter surface
20 radial sealing ring
21 radial sealing ring
22 sealing lip
23 Corrosion protection coating
24 double row radial ball bearings
25 outer race
26 inner race
27 rolling element ring
28 rolling element ring
29 tread
30 tread
31 radial sealing ring
32 radial sealing ring
33 sealing lip
34 sealing lip
35 counter surface
36 counter surface
37 Corrosion protection coating

Claims (8)

1. Radial- oder Axialwälzlager (1) aus Stahl mit konzentrisch inein­ ander oder parallel zueinander angeordneten Laufringen (2, 3) bzw. -scheiben zwischen deren einander zugewandten Laufflächen (7, 8) Wälzkörper (4) abrollen, dadurch gekennzeichnet, daß zumindest die Laufflächen (7, 8) mit einer Korrosionsschutzbeschichtung (6) aus einer galvanischen Zink-Legierung versehen sind.1. Radial or axial roller bearing ( 1 ) made of steel with concentrically in one another or parallel to each other arranged races ( 2 , 3 ) or discs between their facing treads ( 7 , 8 ) rolling elements ( 4 ), characterized in that at least the running surfaces ( 7 , 8 ) are provided with a corrosion protection coating ( 6 ) made of a galvanic zinc alloy. 2. Radial- oder Axialwälzlager (9, 24) aus Stahl mit konzentrisch ineinander oder parallel zueinander angeordneten Laufringen (10, 11 bzw. 25, 26) bzw. -scheiben, zwischen deren einander zugewandten Laufflächen (12, 13 bzw. 29, 30) Wälzkörper (14, bzw. 27, 28) abrol­ len, wobei zumindest einerseits der Wälzkörper (14 bzw. 27, 28) am äußeren Laufring (11, bzw. 25) oder an einer der Laufscheiben ein Dichtring (20, 21 bzw. 31, 32) vorgesehen ist, dessen Dichtlippe (22 bzw. 33, 34) mit einer Gegenfläche (35, 36) des inneren Laufringes (26), mit einer Gegenfläche (19) einer mit dem inneren Laufring (10) verbundenen Bordscheibe (17,18) oder mit einer Gegenfläche der gegen­ überliegenden Laufscheibe zusammenwirkt, dadurch gekennzeichnet, daß die Gegenfläche (19 bzw. 35, 36) mit einer Korrosionsschutzbeschich­ tung (23 bzw. 37) aus einer galvanischen Zink-Legierung versehen ist.2. Radial or axial roller bearings ( 9 , 24 ) made of steel with concentrically arranged or parallel to each other races ( 10 , 11 or 25 , 26 ) or disks, between their facing treads ( 12 , 13 or 29 , 30th ) Rolling elements ( 14 or 27 , 28 ) roll, whereby at least on the one hand the rolling elements ( 14 or 27 , 28 ) on the outer race ( 11 or 25 ) or on one of the running disks a sealing ring ( 20 , 21 or 31 , 32 ) is provided, the sealing lip ( 22 or 33 , 34 ) of which has a counter surface ( 35 , 36 ) of the inner race ( 26 ) and a counter surface ( 19 ) of a flanged disc ( 17 ) connected to the inner race ( 10 ) , 18 ) or cooperates with a counter surface of the opposing running disk, characterized in that the counter surface ( 19 or 35 , 36 ) is provided with a corrosion protection coating ( 23 or 37 ) made of a galvanic zinc alloy. 3. Radial- oder Axialwälzlager nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Korrosionsschutzbeschichtung (6, 23, 37) aus einer Zink-Eisen-Legierung hergestellt ist.3. Radial or axial roller bearing according to one of claims 1 or 2, characterized in that the anti-corrosion coating ( 6 , 23 , 37 ) is made of a zinc-iron alloy. 4. Radial- oder Axialwälzlager nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Korrosionsschutzbeschichtung (6, 23, 37) aus einer Zink-Nickel-Legierung hergestellt ist. 4. Radial or axial roller bearing according to one of claims 1 or 2, characterized in that the anti-corrosion coating ( 6 , 23 , 37 ) is made of a zinc-nickel alloy. 5. Radial- oder Axialwälzlager nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Korrosionsschutzbeschichtung (6, 23, 37) aus einer Zink-Kobalt-Legierung hergestellt ist.5. Radial or axial roller bearing according to one of claims 1 or 2, characterized in that the anti-corrosion coating ( 6 , 23 , 37 ) is made of a zinc-cobalt alloy. 6. Radialwälzlager nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Korrosionsschutzbeschichtung (6, 23, 37) eine Schichtdicke von 0,1 bis 3,0 µm aufweist.6. Radial roller bearing according to one of the preceding claims, characterized in that the anti-corrosion coating ( 6 , 23 , 37 ) has a layer thickness of 0.1 to 3.0 µm. 7. Radialwälzlager nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Korrosionsschutzbeschichtung eine Schichtdicke von 3,0 bis 9,0 µm aufweist.7. Radial roller bearing according to one of the preceding claims, characterized characterized in that the anti-corrosion coating is a layer thickness from 3.0 to 9.0 µm. 8. Radialwälzlager nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Korrosionsschutzbeschichtung (6, 23, 37) eine Chromatierung aufweist.8. Radial roller bearing according to one of the preceding claims, characterized in that the anti-corrosion coating ( 6 , 23 , 37 ) has a chromate coating.
DE4142313A 1991-12-20 1991-12-20 Radial or axial roller bearings made of steel Expired - Lifetime DE4142313C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE9117069U DE9117069U1 (en) 1991-12-20 1991-12-20 Radial roller bearings made of steel
DE4142313A DE4142313C2 (en) 1991-12-20 1991-12-20 Radial or axial roller bearings made of steel
KR1019920024439A KR100242577B1 (en) 1991-12-20 1992-12-16 Steel Radial Rolling Bearing
CS923700A CZ283740B6 (en) 1991-12-20 1992-12-16 Radial or thrust rolling-contact bearing
JP4336964A JP2886013B2 (en) 1991-12-20 1992-12-17 Radial or thrust rolling bearings made of steel
RO92-01584A RO109771B1 (en) 1991-12-20 1992-12-18 Anticorrosive coating for steel radial or axial ball-bearing
RU9292004600A RU2079740C1 (en) 1991-12-20 1992-12-18 Steel rolling bearing
BR9205068A BR9205068A (en) 1991-12-20 1992-12-18 STEEL RADIAL OR AXIAL BEARING BEARING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4142313A DE4142313C2 (en) 1991-12-20 1991-12-20 Radial or axial roller bearings made of steel

Publications (2)

Publication Number Publication Date
DE4142313A1 true DE4142313A1 (en) 1993-06-24
DE4142313C2 DE4142313C2 (en) 1998-10-29

Family

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DE9117069U Expired - Lifetime DE9117069U1 (en) 1991-12-20 1991-12-20 Radial roller bearings made of steel
DE4142313A Expired - Lifetime DE4142313C2 (en) 1991-12-20 1991-12-20 Radial or axial roller bearings made of steel

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DE9117069U Expired - Lifetime DE9117069U1 (en) 1991-12-20 1991-12-20 Radial roller bearings made of steel

Country Status (7)

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JP (1) JP2886013B2 (en)
KR (1) KR100242577B1 (en)
BR (1) BR9205068A (en)
CZ (1) CZ283740B6 (en)
DE (2) DE9117069U1 (en)
RO (1) RO109771B1 (en)
RU (1) RU2079740C1 (en)

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KR930013510A (en) 1993-07-22
DE4142313C2 (en) 1998-10-29
RO109771B1 (en) 1995-05-30
JP2886013B2 (en) 1999-04-26
RU2079740C1 (en) 1997-05-20
CZ283740B6 (en) 1998-06-17
CZ370092A3 (en) 1993-07-14
BR9205068A (en) 1993-06-22
JPH05240256A (en) 1993-09-17
KR100242577B1 (en) 2000-03-02
DE9117069U1 (en) 1995-07-20

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