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DE19817055A1 - Schmierstoff für wartungsfreie Gelenkwellen - Google Patents

Schmierstoff für wartungsfreie Gelenkwellen

Info

Publication number
DE19817055A1
DE19817055A1 DE19817055A DE19817055A DE19817055A1 DE 19817055 A1 DE19817055 A1 DE 19817055A1 DE 19817055 A DE19817055 A DE 19817055A DE 19817055 A DE19817055 A DE 19817055A DE 19817055 A1 DE19817055 A1 DE 19817055A1
Authority
DE
Germany
Prior art keywords
lubricant
weight
percent
lubricant according
amount
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.)
Withdrawn
Application number
DE19817055A
Other languages
English (en)
Inventor
Wilfried Hermann Dipl C Dresel
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.)
Fuchs Dea Schmierstoffe GmbH and Co KG
Original Assignee
FUCHS MINERALOELWERKE
GKN Gelenkwellenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FUCHS MINERALOELWERKE, GKN Gelenkwellenbau GmbH filed Critical FUCHS MINERALOELWERKE
Priority to DE19817055A priority Critical patent/DE19817055A1/de
Priority to ES98109053T priority patent/ES2152724T3/es
Priority to EP98109053A priority patent/EP0885949B1/de
Priority to DE59800225T priority patent/DE59800225D1/de
Priority to KR1019980022582A priority patent/KR100295010B1/ko
Priority to JP10188073A priority patent/JPH1121579A/ja
Priority to US09/102,390 priority patent/US6541427B1/en
Publication of DE19817055A1 publication Critical patent/DE19817055A1/de
Withdrawn legal-status Critical Current

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    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
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    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
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    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
    • C10M2229/0525—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/053—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur
    • C10M2229/0535—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
    • C10M2229/0545—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/10—Groups 5 or 15
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Description

Gegenstand der Erfindung ist ein Schmierstoff für wartungs­ freie Gelenkwellen.
Aus der deutschen Offenlegungsschrift 195 30 504 ist bereits ein Schmierfett bekannt, das auch bei hoher Temperaturbela­ stung in Gleichlaufgelenken angewendet werden kann, mit geringem Aufwand herstellbar ist und als permanente Fest­ schmierstoffüllung zu einer erhöhten Lebensdauer von Gleich­ laufgelenken führt. Es enthält als Basis mineralische und/oder synthetische Öle, Harnstoff-Verbindungen als Verdicker und Molybdänsulfid als dispergierten Festschmierstoff sowie zusätzlich Graphit, Polytetrafluorethylen und wenigstens eine molybdänorganische Verbindung. Weiterhin ist aus der interna­ tionalen Patentanmeldung WO 97/03152 die Verwendung von Molybdändisulfid, Zinknaphthenat und einem oder mehreren Metalldithiophosphaten als eine Reibung vermindernde Additiv­ mischung in Schmierölen auf Basis eines mineralischen und/oder synthetischen Öles bekannt. Darüberhinaus ist aus der internationalen Patentanmeldung WO 94/11470 ein Lithiumseifen enthaltendes Schmierfett bekannt, dem Dithiocarbamate oder Dithiophosphate des Molybdäns im Gemisch mit Dithiocarbamaten oder Dithiophosphaten des Wismuts, des Bleis, des Antimons und anderer Schwermetalle bei gleichzeitiger Anwesenheit unter­ schiedlicher organischer Schwefelverbindungen, unter denen sich auch Thiadiazole befinden, zugesetzt sind. Außerdem sind in den dort beschriebenen Schmierölen organische Phosphate, Phosphine, Phosphonate oder Phosphite enthalten, die für die Verbesserung der Eigenschaften des Schmierstoffes als ganz entscheidend angesehen werden. Derartige Schmierstoffe sind durch einen Gehalt an anorganischem Molybdändisulfid gekenn­ zeichnet und eignen sich für homokinetische Gleichlaufgelenke, geben aber beim Einsatz in Kreuzgelenkwellen keine guten Leistungen.
Es besteht deshalb ein Bedarf bei der Entwicklung von wartungsfreien Kreuzgelenkwellen, insbesondere Kreuzgelenkgar­ nituren für schwere Nutzfahrzeuge durch eine Verbesserung der Eigenschaften von Schmierstoffen die Laufleistung, die Wirtschaftlichkeit und die Umweltverträglichkeit von Teilen der Nutzfahrzeuge zu verbessern.
Erfindungsgemäß wird diese Aufgabe durch einen Schmierstoff gelöst, der
  • a) ein naphthenisches oder paraffinisches Solventraffinat einzeln oder im Gemisch als Basis,
  • b) ein Lithiumsalz einer Hydroxifettsäure mit 10 bis 24 Kohlenstoffatomen oder ein Lithiumsalz einer aliphati­ schen oder cycloaliphatischen Dicarbonsäure mit 2 bis 12 Kohlenstoffatomen,
  • c) ein oder mehrere Stellöle und
  • d) ein Molybdän-, Zink- oder Wismut-dithiocarbamat oder -dithiophosphat zusammen mit einem Thiadiazol
und weitere, in Schmierstoffen üblicherweise eingesetzte Oxidations-, Korrosions- und Hochdruckadditive enthält.
Für den erfindungsgemäßen Schmierstoff eignen sich als Basis Mineralöle und/oder synthetische Kohlenwasserstofföle. Bevorzugt wird ein naphthenisches Solventraffinat, das durch eine Kombination von Naphthenbasismineralöl mit einem synthetischen Kohlwasserstofföl in einem Verhältnis von 1 : 3 bis 1 : 5 erhalten wird. Ebenso ist ein paraffinisches Sol­ ventraffinat geeignet, das eine Mischung eines Paraffinbasis­ mineralöls mit einem synthetischen Kohlenwasserstofföl in einem Verhältnis von 1 : 3 bis 1 : 5 ist und eine Viskosität von etwa 100 bis 150 Centistoke bei 40°C aufweist.
Der erfindungsgemäße Schmierstoff enthält als Verdicker eine Lithiumseife, die von einer gesättigten oder ungesättigten aliphatischen Mono- oder Dicarbonsäure mit 10 bis 24, vorzugsweise 16 bis 18 Kohlenstoffatomen abgeleitet ist. Zu bevorzugen sind komplexe Lithiumseifen, die aus einer Mischung verschiedener Fettsäuren und anderer Säuren gebildet werden. Vor allem Mischungen des Lithiumsalzes der 12-Hydrox­ stearinsäure mit den Lithiumsalzen der Azelainsäure, der Sebacinsäure oder der Borsäure haben als Verdickungsmittel für Schmierstoffe bereits vielfache Verwendung gefunden, weil sie bei höheren Temperaturen als die einfachen Lithiumseifen eingesetzt werden können.
Auch die Lithiumsalze von aliphatischen, cycloaliphatischen oder aromatischen Mono- oder Dicarbonsäuren sowie Lithiumborat haben sich als Verdicker von Schmierstoffen besonders bewährt. Das Lithiumsalz wird dem Basisfett in einer Menge von 5 bis 20 Gewichtsprozent, bezogen auf die Menge des Basisfetts zugegeben.
Schließlich können für den erfindungsgemäßen Schmierstoff auch Amide von aromatischen Dicarbonsäuren, insbesondere die als Terephthalamate bezeichneten Amide der Terephthalsäure, vor allem das Octadecylamid der Terephthalsäure, mit gutem Erfolg eingesetzt werden.
Zum Erreichen eines während des Betriebes möglichst flachen Viskositäts-Temperatur-Verlaufes werden dem Basisfett ein oder mehrere Stellöle zugegeben, in welchen die Additive bereits gelöst sein können. Als Stellöle sind Olefincopolymere, Polybutene, Polyolester, Polyalfaolefine, Perfluorpolyether, Polysiloxane und hydrierte Dien-Styrol-Copolymere geeignet. Sie werden dem Basisfett im allgemeinen in einer Menge von 2 bis 40 Gewichtsprozent, bezogen auf die Gesamtmenge des Schmierstoffes zugegeben.
Um den erfindungsgemäßen Schmierstoff gegen die hohen thermischen und mechanischen Beanspruchungen zu stabilisieren, die bei seiner Anwendung in der Lagerung des Zapfenkreuzes auftreten, müssen ihm Additive zugesetzt werden. Als Antiox­ ydantien eignen sich hierfür sterisch gehinderte Phenole und Amine, zum Beispiel Phenyl-α-naphthylamine.
Die richtigen Eigenschaften des erfindungsgemäßen Schmier­ stoffes werden zudem dadurch erreicht, daß er neben anderen Additiven Dithiocarbamate oder Dithiophosphate des Molybdäns, des Zinks oder des Wismuts in Kombination mit einem Thiadiazol enthält. Molybdän-dithiophosphate und Molybdändithiocarbamate haben sich ganz besonders bewährt. Werden derartige Molybdän­ verbindungen zusammen mit einem 1-Thia-3,4-diazol oder seinem schwefelverbrückten Dimeren eingesetzt, dann werden die Schmiereigenschaften sowohl bei hohen Temperaturen als auch bei mechanischen Belastungen auf dauerhafte Weise so stark verbessert, daß die Schmierung der Zapfengarnituren beim Hersteller für die ganze Lebensdauer des Nutzfahrzeuges ausreicht.
Weitere Verbesserung lassen sich dadurch erreichen, daß man ein Korrosionsschutzmittel wie N-Acyl-Sarkosin und/oder einen Hochdruckzusatz wie Methylen-bis (dibutyl-dithio-carbamat) dem Schmierstoff zusetzt. Insgesamt soll die Menge der zu­ zusetzenden Additive in einem Mengenbereich von 2 bis 10 Gewichtsprozent, bezogen auf den gesamten Schmierstoff, liegen.
Die Herstellung des erfindungsgemäßen Schmierstoffes erfolgt so, daß die durch Umsetzung von Lithiumhydroxyd mit einer aliphatischen oder aromatischen Mono- oder Dicarbonsäure einer Alkylsulfonsäure oder der Borsäure hergestellten Lithiumsalze in der Basis gelöst oder suspendiert werden und ein Teil der Additive dem Stellöl zugegeben wird. Diese beiden Mischungen werden dann bei erhöhter Temperatur zwischen 80 bis 240°C in einer Rühr- oder Mischvorrichtung miteinander vermischt. Hochdruckhomogenisatoren haben sich für die Herstellung des erfindungsgemäßen Schmierstoffes mit einer gleichmäßigen und homogenen Verteilung seiner Inhaltsstoffe ganz besonders bewährt. Die temperaturempfindlichen Additive werden erst vor dem Homogenisieren zugegeben.
Die folgenden Beispiel zeigen Rezepturen des erfindungsgemäßen Schmierstoffes, die sich zur Lebensdauerschmierung von Zapfenkreuzlagerungen von Kreuzgelenken als hervorragend geeignet erwiesen haben:
Beispiel 1
Es wurde ein erfindungsgemäßer Schmierstoff mit folgender allgemeiner Zusammensetzung hergestellt:
1. Basis
1,0 Gewichtsprozent Arylcarbonsäure
1,0 Gewichtsprozent Alkylsulfonsäure
3,0 Gewichtsprozent aliphatische Dicarbonsäuren mit 6 bis 10 C-Atomen
8,0 Gewichtsprozent aliphatische Monocarbonsäuren mit 12 bis 22 Kohlenstoffatomen oder ihre Glyceride
3,0 Gewichtsprozent Lithiumhydroxyd
43,0 Gewichtsprozent naphthenisches Solventraffinat.
Diese Mischung ist in dem erfindungsgemäßen Schmierstoff in einer Menge von 53 Gewichtsprozent enthalten.
Synthetische Stellkomponenten
6,0 Gewichtsprozent Olefincopolymeres
18,0 Gewichtsprozent Polyolester
76,0 Gewichtsprozent Poly-α-Olefine.
Diese Mischung ist in dem erfindungsgemäßen Schmierstoff in einer Menge von 40 Gewichtsprozent enthalten.
Additive
0,5 Gewichtsprozent aminisches Antioxidans
0,5 Gewichtsprozent Carbonsäurealkanolamid
2,0 Gewichtsprozent Molybdänverbindung
1,0 Gewichtsprozent pflanzliches Öl
1,0 Gewichtsprozent Sarkosinderivat
2,0 Gewichtsprozent Thiadiazolderivat.
Diese Mischung ist in dem Schmierstoff in einer Menge von 7 Gewichtsprozent enthalten.
Beispiel 2
Es wurde ein weiterer erfindungsgemäßer Schmierstoff mit folgender allgemeiner Zusammensetzung hergestellt:
1. Basis
2,0 Gewichtsprozent Borsäure
14,0 Gewichtsprozent Monocarbonsäuren mit 12 bis 22 Koh­ lenstoffatomen oder ihre Glyzeride
1,0 Gewichtsprozent Polycarbonsäure
3,0 Gewichtsprozent Lithiumhydroxid
66,0 Gewichtsprozent paraffinisches Solventraffinat.
Diese Mischung ist in dem erfindungsgemäßen Schmierstoff in einer Menge von 86 Gewichtsprozent enthalten.
Synthetische Stellkomponenten
12,0 Gewichtsprozent Olefincopolymere
36,0 Gewichtsprozent Polyolester
52,0 Gewichtsprozent Poly-α-Olefin.
Diese Mischung ist in dem erfindungsgemäßen Schmierstoff in einer Menge von 7 Gewichtsprozent enthalten.
Additive
0,5 Gewichtsprozent aminisches Antioxidans
0,5 Gewichtsprozent Carbonsäurealkanolamid
2,0 Gewichtsprozent Molybdänverbindung
1,0 Gewichtsprozent pflanzliches Öl
1,0 Gewichtsprozent Sarkosinderivat
2,0 Gewichtsprozent Thiadiazolderivat.
Diese Mischung ist in dem erfindungsgemäßen Schmierstoff in einer Menge von 7 Gewichtsprozent enthalten.
Beispiel 3
Zur Beurteilung der Leistungsfähigkeit der erfindungsgemäßen Schmierstoffe wurde der Schmierstoff gemäß der Rezeptur von Beispiel 1 einem Lebensdauerausfalltest an Kreuzgelenken unterworfen. Dabei wurden 8 Kreuzgelenke mit dem erfindungs­ gemäßen Schmierstoff von Beispiel 1 und 6 Kreuzgelenke mit einem Standardschmierstoff folgender Zusammensetzung ver­ glichen:
1. Basis
2,0 Gewichtsprozent Borsäure
14,0 Gewichtsprozent Monocarbonsäuren mit 12 bis 22 Koh­ lenstoffatomen oder ihre Glyzeride
1,0 Gewichtsprozent Polycarbonsäure
3,0 Gewichtsprozent Lithiumhydroxid
66,0 Gewichtsprozent paraffinisches Solventraffinat.
Diese Mischung ist in dem Standardschmierstoff in einer Menge von 86 Gewichtsprozent enthalten.
Synthetische Stellkomponenten
5,0 Gewichtsprozent Polyolester.
Diese Komponente ist zu 5 Gewichtsprozent in dem Standard­ schmierstoff enthalten.
Additive
0,5 Gewichtsprozent aminisches Antioxidans
0,7 Gewichtsprozent Carbonsäurealkanolamid
1,0 Gewichtsprozent Imidazolinderivat
1,0 Gewichtsprozent pflanzliches Öl
0,5 Gewichtsprozent phenolisches Antioxidans
1,0 Gewichtsprozent Thiadiazolderivat
2,5 Gewichtsprozent Zinkdialkyldithiophosphat
1,5 Gewichtsprozent Zinknaphthenat.
Die Mischung dieser Additive ist in dem Standardschmierstoff in einer Menge von 9 Gewichtsprozent enthalten.
Der vorstehend genannte Standardschmierstoff und der erfin­ dungsgemäße Schmierstoff gemäß Beispiel 1 ergaben bei einer Auswertung der Lebensdauereinzelwerte mittels Weibull- Verteilung (VDA: Qualitätskontrolle der Automobilindustrie: Zuverlässigkeitssicherung bei Automobilherstellern und Lieferanten, Verfahren und Beispiele; Verband der Automobil­ industrie e.V. (VDA), Westendstraße 61, Frankfurt am Main, 1976) eine deutlich verbesserte Lebensdauer beim Einsatz des erfindungsgemäßen Schmierstoffes. Die Kreuzgelenke wurden bei der Durchführung des Versuches einer Umgebungstemperatur von 80°C ausgesetzt. Als Ausfall wurde ein Überschreiten der Außentemperatur von 100°C, gemessen am Boden der Lagerbüchse der Zapfenkreuzgarnitur des Kreuzgelenkes, gewertet. Bei Verwendung des erfindungsgemäßen Schmierstoffes wurden deutlich höhere B10- und B63,2-Werte erzielt.
Weibull-Verteilung
Weibull-Verteilung
Hierbei beschreibt der B10-Wert für die geprüften Gelenke die ermittelte Lebensdauer, bei der 90% der Gelenke noch nicht ausgefallen sind. Analog beschreibt der B63,2-Wert die ermittelte Lebensdauer, bei der 36,8% der Kreuzgelenke noch nicht ausgefallen sind.
Fig. 1 zeigt die grafische Darstellung dieses Versuches. Es ist ersichtlich, daß die Laufzeit bei Verwendung des erfin­ dungsgemäßen Schmierstoffes deutlich höher ist als bei der Verwendung des Standard-Schmierstoffes, wobei die ausfallfreie Zeit gemäß Tabelle hinzuaddiert werden muß. Diese ist in dem Diagramm als t0 im Kästchen unten rechts nochmals aufgeführt.

Claims (6)

1. Schmierstoff für wartungsfreie Gelenkwellen, dadurch gekennzeichnet, daß er
  • a) ein naphthenisches oder paraffinisches Solventraffinat einzeln oder im Gemisch als Basis,
  • b) ein Lithiumsalz einer Hydroxifettsäure mit 10 bis 24 Kohlenstoffatomen oder ein Lithiumsalz einer aliphati­ schen oder cycloaliphatischen Dicarbonsäure mit 2 bis 12 Kohlenstoffatomen,
  • c) ein oder mehrere Stellöle und
  • d) ein Molybdän-, Zink- oder Wismut-dithiocarbamat oder -dithiophosphat zusammen mit einem Thiadiazol
und weitere, in Schmierstoffen üblicherweise eingesetzte Oxidations-, Korrosionsschutz- und Hochdruckadditive enthält.
2. Schmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß er als Stellöl ein Olefincopolymeres, ein Polybuten, einen Polyolester, ein Polyalfaolefin, einen Perfluorpolyether oder ein Polysiloxan enthält.
3. Schmierstoff nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß er das Stellöl in einer Menge von 2 bis 40 Gew.-%, bezogen auf die Gesamtmenge des Schmierstoffes, enthält.
4. Schmierstoff nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß er das Lithiumsalz in einer Menge von 5 bis 20 Gew.-% bezogen auf die Menge des Basisfetts, enthält.
5. Schmierstoff nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß er als weitere Additive aminische und/oder phenolische Antioxidantien enthält.
6. Schmierstoff nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß er als weiteres Additiv N-Acyl-sarkosin als Korrosionsschutzmittel enthält.
DE19817055A 1997-06-20 1998-04-17 Schmierstoff für wartungsfreie Gelenkwellen Withdrawn DE19817055A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19817055A DE19817055A1 (de) 1997-06-20 1998-04-17 Schmierstoff für wartungsfreie Gelenkwellen
ES98109053T ES2152724T3 (es) 1997-06-20 1998-05-19 Uso de una composicion de grasa lubricante para arboles articulados sin mantenimiento.
EP98109053A EP0885949B1 (de) 1997-06-20 1998-05-19 Verwendung einer Schmierfettzusammentsetzung für wartungsfreie Gelenkwellen
DE59800225T DE59800225D1 (de) 1997-06-20 1998-05-19 Verwendung einer Schmierfettzusammentsetzung für wartungsfreie Gelenkwellen
KR1019980022582A KR100295010B1 (ko) 1997-06-20 1998-06-16 유니버설 조인트용 윤활제
JP10188073A JPH1121579A (ja) 1997-06-20 1998-06-19 メインテナンスフリーのジョイント軸用潤滑剤
US09/102,390 US6541427B1 (en) 1997-06-20 1998-06-22 Lubricant for maintenance-free cardan shafts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19726127 1997-06-20
DE19817055A DE19817055A1 (de) 1997-06-20 1998-04-17 Schmierstoff für wartungsfreie Gelenkwellen

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3037505A4 (de) * 2013-08-16 2017-01-18 JX Nippon Oil & Energy Corporation Schmierölzusammensetzung für einen verbrennungsmotor
DE102018005835A1 (de) * 2018-07-24 2020-01-30 Klüber Lubrication München Se & Co. Kg Hybridfett mit niedrigen Reibwerten und hohem Verschleißschutz
CN111607449A (zh) * 2020-06-09 2020-09-01 军事科学院系统工程研究院军事新能源技术研究所 一种高温高原山地车辆轮毂轴承润滑脂及其制备方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3037505A4 (de) * 2013-08-16 2017-01-18 JX Nippon Oil & Energy Corporation Schmierölzusammensetzung für einen verbrennungsmotor
DE102018005835A1 (de) * 2018-07-24 2020-01-30 Klüber Lubrication München Se & Co. Kg Hybridfett mit niedrigen Reibwerten und hohem Verschleißschutz
CN111607449A (zh) * 2020-06-09 2020-09-01 军事科学院系统工程研究院军事新能源技术研究所 一种高温高原山地车辆轮毂轴承润滑脂及其制备方法
CN111607449B (zh) * 2020-06-09 2022-12-13 军事科学院系统工程研究院军事新能源技术研究所 一种高温高原山地车辆轮毂轴承润滑脂及其制备方法

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