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EP0811675B1 - Composition de graisse pour joints homocinétiques - Google Patents

Composition de graisse pour joints homocinétiques Download PDF

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Publication number
EP0811675B1
EP0811675B1 EP97303319A EP97303319A EP0811675B1 EP 0811675 B1 EP0811675 B1 EP 0811675B1 EP 97303319 A EP97303319 A EP 97303319A EP 97303319 A EP97303319 A EP 97303319A EP 0811675 B1 EP0811675 B1 EP 0811675B1
Authority
EP
European Patent Office
Prior art keywords
constant velocity
calcium salts
weight
velocity joints
grease composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97303319A
Other languages
German (de)
English (en)
Other versions
EP0811675A1 (fr
Inventor
Ko Kyodo Yushi Co. Ltd. Hatakeyama
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.)
GKN Automotive Ltd
Kyodo Yushi Co Ltd
Original Assignee
GKN Automotive Ltd
Kyodo Yushi Co Ltd
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 GKN Automotive Ltd, Kyodo Yushi Co Ltd filed Critical GKN Automotive Ltd
Publication of EP0811675A1 publication Critical patent/EP0811675A1/fr
Application granted granted Critical
Publication of EP0811675B1 publication Critical patent/EP0811675B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
    • C10M2215/227—Phthalocyanines
    • C10M2215/2275—Phthalocyanines used as thickening agents
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    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/044—Polyamides
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    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/045—Polyureas; Polyurethanes
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/046—Overbasedsulfonic acid salts
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    • 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
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • C—CHEMISTRY; METALLURGY
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • C10M2219/068—Thiocarbamate metal salts
    • C—CHEMISTRY; METALLURGY
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
    • C10M2219/089—Overbased salts
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
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    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/047—Thioderivatives not containing metallic elements
    • 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
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/32—Wires, ropes or cables lubricants
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/34—Lubricating-sealants
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/40—Generators or electric motors in oil or gas winning field
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/42—Flashing oils or marking oils
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/44—Super vacuum or supercritical use
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses
    • 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
    • C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
    • C10N2060/04—Oxidation, e.g. ozonisation

Definitions

  • the present invention relates to a grease composition for use in constant velocity joints, in particular, for ball type fixed and plunging constant velocity joints.
  • a very high contact pressure is developed between the parts of the constant velocity joints to be lubricated and the joint parts undergo complicated rolling and sliding motions. This often results in abnormal wear and metal fatigue and, in turn, leads to a spalling phenomenon, i.e., pitting of the joint parts.
  • the present invention relates to a grease composition for constant velocity joints which can effectively lubricate such constant velocity joints to effectively reduce the wear of joints and to effectively reduce the occurrence of any pitting of the parts.
  • lubricating greases conventionally used in such constant velocity joints include a lithium soap thickened extreme pressure grease containing molybdenum disulfide and a lithium soap thickened extreme pressure grease containing molybdenum disulfide and extreme pressure agents, e.g., sulfur-phosphorus or a lead naphthenate.
  • extreme pressure agents e.g., sulfur-phosphorus or a lead naphthenate.
  • FF-type motorcars For use in these vehicles constant velocity joints need to be as making light and small as possible.
  • the double offset type constant velocity joints and cross groove type constant velocity joints used as the plunging joints as well as Birfield joints used as the fixed joints have a structure in which torques are transmitted through 6 balls. These joints cause complicated reciprocating motions such as complicated rolling and sliding motions during rotation under a high contact pressure, stresses are repeatedly applied to the balls and the metal surfaces which come in contact with the balls and accordingly, the pitting phenomenon is apt to occur at such portions due to metal fatigue.
  • the recent improvement in the power of engines is accompanied by an increase in the contact pressure as compared with conventional engines.
  • EP-A-0 773 280 has priority dates earlier than that of the present application but was published after the present application was filed. It describes and claims a grease having a base oil, a urea thickener, molybdenum disulfide, a metal salt or overbasic metal salt of a selected group of metals (Ca, Mg, Ba, Na, K, Pb, Zn, Al) and either an extreme pressure agent selected from a metal-free sulfur-phosphorus extreme pressure agent and molybdenum dithiophosphate or molybdenum dithiocarbamate.
  • the patent also discloses compositions consisting of all the above constituents but the metal salt is selected from the salts of magnesium, barium, sodium, potassium, lead, zinc and aluminium.
  • US-A-5 207 936 discloses a grease having a urea thickener which includes molybdenum disulfide and molybdenum dithiocarbamate. In addition it includes zinc dithiophosphate and a vegetable oil.
  • US-A-5 516 439 discloses a grease having a lithium thickener and a metal salt of various types, including a calcium salt, and molybdenum dithiocarbamate or molybdenum dithiophosphate.
  • the grease includes zinc dithiophosphate.
  • US-A-5 160 645 discloses a urea thickened grease which includes a metal-free sulfur-phosphorus extreme pressure agent and molybdenum dithiocarbamate. In addition the grease contains zinc dithiophosphate and lead dithiocarbamate.
  • an object of the present invention is to provide a novel grease composition for constant velocity joints which has an excellent pitting-inhibitory effect and heat resistance.
  • the inventors of this invention have conducted various studies to develop a grease composition capable of optimizing the frictional wear of the constant velocity joints and of eliminating the problem of pitting of joints due to abnormal wear and metal fatigue and having improved heat resistance.
  • the inventors have carried out a quality evaluation of greases used under lubricating conditions which are accompanied by complicated reciprocating motions such as complicated rolling and sliding motions under a high contact pressure as has been discussed above using an SRV (Schwingung Reibung und Verschleiss) tester known as an oscillating friction and wear tester, to determine lubricating characteristics (such as friction coefficient and wear) of various kinds of extreme pressure agents, solid lubricants or combinations of additives.
  • SRV Hughes Reibung und Verschleiss
  • a grease comprising a specific combination of a base oil, an urea thickener, molybdenum disulfide, a calcium salt or an overbasic calcium salt of a specific compound, a metal-free sulfur-phosphorus extreme pressure agent and molybdenum dithiocarbamate exhibits desired lubricating characteristics such as a good friction coefficient and low wear and have confirmed, by a durability test performed using a practical constant velocity joint, that the grease can prevent the occurrence of any pitting phenomena, unlike the conventional greases for constant velocity joints and thus have completed the present invention.
  • the base oil as Component (a) is not restricted to specific ones and may be, for instance, lubricating oils currently used such as mineral oils, ester type synthetic oils, ether type synthetic oils, hydrocarbon type synthetic oils or mixture thereof.
  • the urea thickener as Component (b) is not restricted to specific ones and may be, for instance, diurea compounds and polyurea compounds.
  • diurea compounds include those obtained through a reaction of a monoamine with a diisocyanate compound.
  • diisocyanates include phenylene diisocyanate, diphenyl diisocyanate, phenyl diisocyanate, diphenylmethane diisocyanate, octadecane diisocyanate, decane diisocyanate, and hexane diisocyanate.
  • monoamines include octylamine, dodecylamine, hexadecylamine, octadecylamine, oleylamine, aniline, p-toluidine, and cyclohexylamine.
  • Examples of the polyurea compounds include those obtained through a reaction of a diamine with a diisocyanate compound.
  • examples of the diisocyanates include those used for the formation of the diurea compounds as mentioned above.
  • examples of the diamines include ethylenediamine, propanediamine, butanediamine, hexanediamine, octanediamine, phenylenediamine, tolylenediamine, and xylenediamine.
  • urea thickeners include those obtained through a reaction of aryl amine such as aniline or p-toluidine, cyclohexyl amine or a mixture thereof with a diisocyante.
  • aryl group in the diurea compounds is preferably those having 6 or 7 carbon atoms and the rate of the aryl group in the diurea compound ranges from 100 to 0 mole% based on the total moles of the aryl and the cyclohexyl groups in the diurea compounds.
  • the molybdenum disulfide as Component (c) has widely been used as an extreme pressure agent. With regard to the lubricating mechanism thereof, the molybdenum disulfide is easily sheared under the sliding motions through the formation of a thin layer since it has a layer lattice structure and it shows effects of reducing the frictional force and of preventing seizure of joints.
  • the calcium salts or overbasic calcium salts as Component (d) are selected from those known as metal cleaning dispersants or rust-inhibitors which are used in lubricants such as engine oils, such as calcium salts of oxidized waxes, calcium salts of petroleum sulfonates which are obtained by the sulfonation of aromatic hydrocarbon in lubricating oil fraction, calcium salts of synthetic sulfonates such as dinonylnaphthalene sulfonic acid and alkylbenzene sulfonic acid, calcium salts of salicylate, calcium salts of phenates, overbasic calcium salts of oxidized waxes, overbasic calcium salts of petroleum sulfonates, overbasic calcium salts of alkyl aryl sulfonates, overbasic calcium salts of salicylate, and overbasic calcium salts of phenates.
  • Preferred metal-free sulfur-phosphorus extreme pressure agents as Component (e) have a sulfur content ranging from 15 to 35% by weight and a phosphorus content ranging from 0.5 to 3% by weight and exhibit excellent effects of inhibiting wear and of preventing seizure of the joints through the well-established balance between the sulfur and phosphorus contents.
  • the grease composition for constant velocity joints according to the present invention may further comprise antioxidants, corrosion inhibitors, rust inhibitors in addition to the foregoing essential components.
  • the grease composition for constant velocity joints preferably comprises, on the basis of the total weight of the grease composition, 52.0 to 97.8% by weight of the base oil (a); 1 to 25% by weight of the urea thickener (b); 0.5 to 5% by weight of the molybdenum disulfide (c); 0.5 to 15% by weight of the calcium salt or overbasic calcium salt (d); 0.1 to 3% by weight of the metal-free sulfur-phosphorus extreme pressure agent (e); and 0.1 to 5% by weight of the molybdenum dithiocarbamate (f).
  • Test Conditions Number of Revolutions 1000 rpm Torque 392 N • m Angle of Joint 8 ° Operation Time 100 hours
  • the grease composition for constant velocity joints consists essentially of (a) a base oil; (b) an urea thickener; (c) molybdenum disulfide; (d) a specific calcium salt or a specific overbasic calcium salt; (e) a metal-free sulfur-phosphorus extreme pressure agent; and (f) molybdenum dithiocarbamate and thus exhibits excellent wear-resistant effect and an excellent pitting-inhibitory effect as is also apparent from the comparison of the results of Examples with those of Comparative Examples.

Landscapes

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

Claims (5)

  1. Composition de graisse pour joints homocinétiques, essentiellement constituée par :
    (a) une huile de base ;
    (b) un épaississant à base d'urée ;
    (c) du disulfure de molybdène ;
    (d) un sel de calcium ou un sel de calcium superbasique, choisi dans le groupe constitué par les sels de calcium de cires oxydées, les sels de calcium de sulfonates de pétrole, les sels de calcium d'alkyl aryl sulfonates, les sels de calcium de salicylate, les sels de calcium de phénates, les sels de calcium superbasiques de cires oxydées, les sels de calcium superbasiques de sulfonates de pétrole, les sels de calcium superbasiques d'alkylarylsulfonates, les sels de calcium superbasiques de salicylate et les sels de calcium superbasiques de phénates;
    (e) un agent pour pression extrême à base de soufre et de phosphore, exempt de métal ; et
    (f) du dithiocarbamate de molybdène.
  2. Composition de graisse pour joints homocinétiques selon la revendication 1, dans laquelle la composition de graisse est essentiellement constituée, par rapport au poids total de la composition, de 52,0 à 97,8 % en poids de l'huile de base (a) ; de 1 à 25 % en poids de l'épaississant à base d'urée (b) ; de 0,5 à 5,0 % en poids de disulfure de molybdène (c) ; de 0,5 à 15 % en poids du sel de calcium ou du sel de calcium superbasique (d) ; de 0,1 à 3 % en poids de l'agent pour pression extrême à base de soufre et de phosphore, exempt de métal (e) ; et du dithiocarbamate de molybdène (f).
  3. Composition de graisse pour joints homocinétiques selon la revendication 1 ou 2, dans laquelle l'agent pour pression extrême à base de soufre et de phosphore, exempt de métal (e) présente une teneur en soufre de 15 à 35 % en poids et une teneur en phosphore de 0,5 à 3 % en poids.
  4. Composition de graisse pour joints homocinétiques selon la revendication 1 ou 2, dans laquelle les joints homocinétiques sont des joints à rotules plongeurs homocinétiques.
  5. Composition de graisse pour joints homocinétiques selon la revendication 1 ou 2, dans laquelle les joints homocinétiques sont des joints fixes homocinétiques.
EP97303319A 1996-06-05 1997-05-15 Composition de graisse pour joints homocinétiques Expired - Lifetime EP0811675B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP14278796A JP3320611B2 (ja) 1996-06-05 1996-06-05 等速ジョイント用グリース組成物
JP142787/96 1996-06-05
JP14278796 1996-06-05

Publications (2)

Publication Number Publication Date
EP0811675A1 EP0811675A1 (fr) 1997-12-10
EP0811675B1 true EP0811675B1 (fr) 2001-12-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97303319A Expired - Lifetime EP0811675B1 (fr) 1996-06-05 1997-05-15 Composition de graisse pour joints homocinétiques

Country Status (7)

Country Link
EP (1) EP0811675B1 (fr)
JP (1) JP3320611B2 (fr)
KR (1) KR100410724B1 (fr)
CN (1) CN1069691C (fr)
DE (1) DE69708974T2 (fr)
ES (1) ES2164991T3 (fr)
TW (1) TW349118B (fr)

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* Cited by examiner, † Cited by third party
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US6432889B1 (en) 1998-07-15 2002-08-13 Nippon Mitsubishi Oil Corporation Grease composition
JP4524007B2 (ja) * 1999-06-29 2010-08-11 協同油脂株式会社 等速ジョイント用グリース組成物
CN1100131C (zh) * 2000-04-29 2003-01-29 中国石油化工集团公司 用于等速万向节的润滑脂及其制备方法
JP4641336B2 (ja) * 2000-08-10 2011-03-02 協同油脂株式会社 グリース組成物
JP4864296B2 (ja) * 2004-07-01 2012-02-01 協同油脂株式会社 等速ジョイント用グリース組成物及びそれを封入した等速ジョイント
JP2006096949A (ja) * 2004-09-30 2006-04-13 Toyoda Mach Works Ltd ボールタイプ等速ジョイント用グリース組成物及びボールタイプ等速ジョイント。
TW200624549A (en) 2004-11-08 2006-07-16 Thk Co Ltd Grease composition conforming to vibration and guide employing the same
JP2006283830A (ja) * 2005-03-31 2006-10-19 Ntn Corp 等速自在継手
JP2007224134A (ja) * 2006-02-23 2007-09-06 Nippon Koyu Ltd 難燃性潤滑グリース組成物
WO2008040383A1 (fr) * 2006-10-07 2008-04-10 Gkn Driveline International Gmbh Composition de graisse pour liaisons homocinétiques fonctionnant à vitesse constante, c comprenant au moins un composé de molybdène tri-nucléaire et un épaississant dérivé de l'urée
JP5132170B2 (ja) * 2007-03-22 2013-01-30 日本精工株式会社 ジウレアグリース組成物
JP5399203B2 (ja) * 2009-10-22 2014-01-29 Ｎｔｎ株式会社 固定型等速自在継手
JP2012052654A (ja) * 2010-08-05 2012-03-15 Ntn Corp 固定式等速自在継手
KR102099167B1 (ko) 2012-10-05 2020-04-09 교도유시 가부시끼가이샤 그리스 조성물
JP6804156B2 (ja) * 2017-03-29 2020-12-23 日本製鉄株式会社 ころがり軸受用グリース組成物
CN116410813A (zh) * 2021-12-31 2023-07-11 朗盛特殊化学品有限公司 用于等速接头中的聚脲/磺酸钙复合润滑脂组合物

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KR100410724B1 (ko) 2004-03-30
TW349118B (en) 1999-01-01
KR980002219A (ko) 1998-03-30
DE69708974T2 (de) 2002-08-08
ES2164991T3 (es) 2002-03-01
DE69708974D1 (de) 2002-01-24
EP0811675A1 (fr) 1997-12-10
JPH09324189A (ja) 1997-12-16
CN1168916A (zh) 1997-12-31
CN1069691C (zh) 2001-08-15
JP3320611B2 (ja) 2002-09-03

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