CN100572510C - Heat-resisting lithium grease composition and low noise micro-machine bearing - Google Patents

Heat-resisting lithium grease composition and low noise micro-machine bearing Download PDF

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Publication number
CN100572510C
CN100572510C CNB2005800263453A CN200580026345A CN100572510C CN 100572510 C CN100572510 C CN 100572510C CN B2005800263453 A CNB2005800263453 A CN B2005800263453A CN 200580026345 A CN200580026345 A CN 200580026345A CN 100572510 C CN100572510 C CN 100572510C
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oil
synthetic
grease composition
lithium
lower noise
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CN101014688A (en
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冈村征二
秋山元治
桥本诚二
岩松宏树
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Minebea Co Ltd
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Minebea Co Ltd
Nippon Grease Co Ltd
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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
    • 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
    • C10M169/02—Mixtures of base-materials and thickeners
    • 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
    • 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
    • C10M169/06—Mixtures of thickeners and additives
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
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    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
    • C10M2207/0406—Ethers; Acetals; Ortho-esters; Ortho-carbonates used as base material
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/1256—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids used as thickening agent
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
    • C10M2207/1285—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof used as thickening agents
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • C10M2207/1296—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms used as thickening agents
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
    • C10M2207/2825—Esters of (cyclo)aliphatic oolycarboxylic acids 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/283—Esters of polyhydroxy compounds
    • C10M2207/2835—Esters of polyhydroxy compounds 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
    • C10M2209/086—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type polycarboxylic, e.g. maleic acid
    • C10M2209/0863—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type polycarboxylic, e.g. maleic acid 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/064—Di- and triaryl amines
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/10—Amides of carbonic or haloformic acids
    • C10M2215/102—Ureas; Semicarbazides; Allophanates
    • C10M2215/1026—Ureas; Semicarbazides; Allophanates used as thickening material
    • C—CHEMISTRY; METALLURGY
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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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    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
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    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
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    • C10N2020/04—Molecular weight; Molecular weight distribution
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10N2030/76—Reduction of noise, shudder, or vibrations
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    • C10N2050/10—Semi-solids; greasy

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Abstract

Provide a kind of lubricating grease and comprising of heat-resisting noise abatement to be used for the bearing of micro-machine as the lubricating grease of the motor such as the gas blower that are used for image documentation equipment and the motor bearings that is used for household electrical appliance such as conditioner, it is ecological friendly and excellence at the noise abatement aspect of performance.Heat-stable lithium grease composition is made up of the base oil of 5-20wt% thickening material and 95-80wt%, wherein have the longer chain fatty acid lithium soap of 26-32 carbon atom and comprise higher fatty acid and/or have one or more hydroxyls and the lithium soap of the senior hydroxy fatty acid of 10 or more a plurality of carbon atoms is used as thickening material with 10-20 carbon atom, this base oil comprises the polymkeric substance ester oil (A) as main ingredient, wherein 8 or more a plurality of ester group are arranged with comb teeth in a side of the chain molecule of the oil that is made of 8 or more a plurality of carbon atom, it is by following general formula (1) expression, wherein R 1, R 2, R 3And R 4Represent alkyl separately, x is the integer that satisfies x 〉=2, and y is the integer that satisfies y 〉=2, and described base oil is 30-100mm 40 ℃ viscosity 2/ s.

Description

Heat-resisting lithium grease composition and low noise micro-machine bearing
Technical field
The present invention relates to a kind of Heat-Resisting Grease composition, it is used for micro-machine, the particularly motor bearings of the motor bearings of household electrical appliance such as conditioner, image documentation equipment such as gas blower etc., relate more specifically to a kind of lubricating grease of heat-resisting, noise abatement, it is sealed in the bearing of micro-machine to reduce the rotation noise of motor.
Background technology
Usually, it is known using the lubricating grease that is sealed in the bearing.Prior art has shown a kind of grease composition, and wherein in a side of the chain molecule of the oil of being made up of 8 or more a plurality of carbon atom, 8 or more a plurality of ester group are arranged with comb teeth.Form lubricating grease in the base oil by the urea thickening material is added to, wherein synthetic hydrocarbon oil and synthetic ester oil mix with the weight ratio of 0.65-0.75: 0.35-0.25.See Japanese Patent 3514574 and United States Patent (USP) 5,910,470.This grease sealing is in ball bearing, and described ball bearing supports near the belt pully that places motor car engine.This device makes its rotating speed Fast transforms.The noise of the similar steam whistle of the uniqueness that produces when using in cold climate in order to solve uses lubricating grease.
The lubricating grease that is sealed in the similar bearing is shown in the Japanese Laid-Open Patent Application that publication number is 1994-306383.Wherein grease composition is sealed in the bearing.Form grease composition in the base oil by the urea thickening material is added to, wherein synthetic hydrocarbon oil and synthetic ester oil mix with the weight ratio of 0.65-0.75: 0.35-0.25.
Japanese Patent 3324628 shows when noise abatement and vibration damping are top-priority problem for the grease composition in the bearing that is sealed in robot calculator, semiconductor-fabricating device etc., uses the lubricating grease of reduction noise and moment of torsion.This patent show lubricating grease with lithium soap as thickening material and ester oil as base oil.Yet,, have the problem of damage recording medium if this lithium-soap-ester lubricating grease often splashes and its tale quale uses.Still need to improve the noise abatement grease composition that is sealed in the micro-machine bearing in the art.
Summary of the invention
According to the present invention, a kind of heat-resisting and noise abatement grease composition is provided, it makes us desirably being used for the micro-machine bearing.In another aspect of the present invention, provide a kind of sealing bearing that comprises grease composition, it makes us desirably being installed in the micro-machine to reduce motor rotation noise in use.
According to the present invention, a kind of lithium grease composition of heat-resisting noise abatement is provided, it has 5-20wt%, is preferably greater than 5wt% and less than the lithium soap-thickened agent of 20wt%.Make us desirably, the lithium soap-thickened agent accounts for the about 17.5wt% of about 7.5wt%-of grease composition, the about 15wt% of preferably about 10wt%-, the about 13wt% of about especially 12wt%-.The lithium soap-thickened agent is made up of the longer chain fatty acid lithium soap with 26-32 carbon atom.The lithium soap-thickened agent also comprises the higher fatty acid lithium soap with 10-20 carbon atom and/or has one or more hydroxyls and the senior hydroxy fatty acid lithium soap of 10 or more a plurality of carbon atoms.
Lithium grease composition also comprises the base oil of 95-80wt%.This base oil comprises polymkeric substance ester oil, and wherein 8 or more a plurality of ester group are arranged with comb teeth in a side of chain molecule, and it is by formula 1 expression
Formula 1
R wherein 1, R 2, R 3And R 4Represent alkyl separately, x is the integer that satisfies x 〉=2, and y is the integer that satisfies y 〉=2.
Described base oil is 30-100mm 40 ℃ viscosity 2/ s.
Polymkeric substance ester oil preferably is present in the base oil in a large number, and its amount is preferably the 20wt% of base oil or more, is preferably the 20wt%-50wt% of base oil.
Make us desirably, except that the polymkeric substance ester oil (A) of formula 1, base oil comprises one or more in synthetic ester oil (B), synthetic hydrocarbon oil (C), synthetic ether oil (D) and the mineral oil (E).Make us polymkeric substance ester oil (A) desirably and account for the 20-50wt% of whole grease compositions, synthetic hydrocarbon oil (C) accounts for the 10-40wt% of whole grease compositions, and mineral oil (E) accounts for the 10-40wt% of whole grease compositions.Randomly according to the present invention, polymkeric substance ester oil (A) accounts for the 20-50wt% of whole grease compositions, and synthetic ester oil (B) accounts for the 10-40wt% of whole grease compositions, and synthetic hydrocarbon oil (C) accounts for the 10-40wt% of whole grease compositions.Advantageously, according to the present invention, polymkeric substance ester oil (A) accounts for the 20-50wt% of whole grease compositions, synthetic ester oil (B) accounts for the 10-30wt% of whole grease compositions, synthetic hydrocarbon oil (C) accounts for the 2-10wt% of whole grease compositions, and synthetic ether oil (D) accounts for the 10-30wt% of whole grease compositions.
Preferably, the lithium soap-thickened agent comprises that content is the 12-oxystearic acid lithium soap of the longer chain fatty acid lithium soap with 26-32 carbon atom of the 0.1-10.0wt% of whole grease compositions, 1.5-10.5wt% that content is whole grease compositions and the straight chain fatty acid lithium soap with 10-20 carbon atom of the 0.5-5.0wt% that content is whole grease compositions.
Make us desirably and can will add in the heat-resisting lithium grease composition as the antioxidant of additive, anticorrosive agent or the like.
Heat-resisting lithium grease composition makes us desirably being sealed in the micro-machine bearing to reduce noise.Resulting composition has excellent sticking power to the metallic surface.The result in use, on the bearing metals surface fast and be formed uniformly protective membrane.This protective membrane can keep at high temperature, and this helps bearing longer work-ing life.In addition, described composition has favourable dispersiveness and the resolvability of additive in base oil, uses according to sealing bearing of the present invention during motor rotation, makes noise keep very low.
Illustrate the preferred embodiments of the invention in an embodiment.Yet, should be expressly understood that the present invention should only not be subject to illustrative embodiment.
Description of drawings
Fig. 1 is the synoptic diagram that is used for the oil film measuring apparatus of embodiment.
Specific embodiments
According to the present invention, a kind of heat-resisting and noise abatement grease composition is provided, it makes us desirably being used for the micro-machine bearing.The bearing that lubricating grease of the present invention is filled makes us desirably being used for the motor of image documentation equipment such as the motor bearings of gas blower, household electrical appliance such as conditioner.In another aspect of the present invention, provide a kind of sealing bearing that comprises described composition, it makes us desirably being installed in the micro-machine to reduce motor rotation noise in use.
According to the present invention, a kind of lithium grease composition of heat-resisting and noise abatement is provided, it has 5-20wt%, is preferably greater than 5wt% and less than the lithium soap-thickened agent of 20wt%.Make us desirably, the lithium soap-thickened agent accounts for the about 17.5wt% of about 7.5wt%-of grease composition, the about 15wt% of preferably about 10wt%-, the about 13wt% of about especially 12wt%-.The lithium soap-thickened agent is made up of the longer chain fatty acid lithium soap with 26-32 carbon atom.The lithium soap-thickened agent also comprises the higher fatty acid lithium soap with 10-20 carbon atom and/or has one or more hydroxyls and the senior hydroxy fatty acid lithium soap of 10 or more a plurality of carbon atoms.Preferably, the lithium soap-thickened agent comprises that content is the 12-oxystearic acid lithium soap of the longer chain fatty acid lithium soap with 26-32 carbon atom of the 0.1-10.0wt% of whole grease compositions, 1.5-10.5wt% that content is whole grease compositions and the straight chain fatty acid lithium soap with 10-20 carbon atom of the 0.5-5.0wt% that content is whole grease compositions.Advantageously, by the long-chain higher fatty acid that makes lithium hydroxide and have a 26-32 carbon atom react each other obtain among the present invention used have 26-32 carbon atom the longer chain fatty acid lithium soap.Can use longer chain fatty acid separately or with the form of mixture with 26-32 carbon atom.The preferred mixture that uses the longer chain fatty acid that comprises the montanic acid that is preferably used as basal component with 26-32 carbon atom with 28 carbon atoms.
Make us desirably, the lithium soap-thickened agent of Shi Yonging in the present invention comprise with the longer chain fatty acid with 26-32 carbon atom by lithium hydroxide and have the higher fatty acid of 10-20 carbon atom and/or have one or more hydroxyls and the senior hydroxy fatty acid synthetic lithium soap of 10 or more a plurality of carbon atoms.
In the present invention, if lithium soap accounts for less than whole 5wt% of grease compositions, then lubricating grease becomes too rare, and if lithium soap accounts for greater than whole 20wt% of grease compositions, then lubricating grease becomes too thick.
Lithium grease composition also comprises the base oil of 95-80wt%.This base oil comprises polymkeric substance ester oil, and wherein 8 or more a plurality of ester group are arranged with comb teeth in a side of chain molecule, and it is by formula 1 expression
Formula 1
Figure C20058002634500121
R wherein 1, R 2, R 3And R 4Represent alkyl separately, x is the integer that satisfies x 〉=2, and y is the integer that satisfies y 〉=2.
Described base oil is 30-100mm 40 ℃ viscosity 2/ s.Polymkeric substance ester oil preferably is present in the base oil in a large number, is preferably the 20wt% of base oil or more, is preferably the 20wt%-50wt% of base oil.
Except that polymkeric substance ester oil (A), base oil makes us desirably comprising one or more in synthetic ester oil (B), synthetic hydrocarbon oil (C), synthetic ether oil (D) and the mineral oil (E).Preferably, the molecular weight of polymkeric substance ester oil is 1000-3000, is 100-1000mm 40 ℃ viscosity 2/ s, and the gained base oil is 30-100mm 40 ℃ viscosity 2/ s.
The polymkeric substance ester oil (A) of Shi Yonging can be any polymer esters in the present invention, and it is represented by following general formula
Formula 1
Figure C20058002634500122
R wherein 1, R 2, R 3And R 4Represent alkyl separately, x is the integer that satisfies x 〉=2, and y is the integer that satisfies y 〉=2.Preferably, the molecular weight of the polymkeric substance ester oil of formula 1 is 1000-3000, and is 100-1000mm 40 ℃ viscosity 2/ s.
Be used for synthetic ester oil of the present invention (B) by general formula (a) and (b) as follows or (c) expression.
Can use synthesis of diester oil by general formula (a) expression:
RCOO(CH 2) nCOOR′ (a)
Wherein R and R ' expression have the alkyl of 3-18 carbon atom, and can be same to each other or different to each other, and n is 3-12;
Synthetic three ester oils by general formula (b) expression:
R(CH 2COOR′) 3 (b)
Wherein R and R ' expression have the alkyl of 3-10 carbon atom;
Synthetic four ester oils by general formula (c) expression:
R(CH 2COOR′) 4 (c)
Wherein R and R ' expression have the alkyl of 3-10 carbon atom; With
Other synthetic neopentyl polyol ester oil.
Being used for synthetic hydrocarbon oil of the present invention (C) preferably poly-alpha-olefin oil, polybutene and olefin copolymer, is 20-100mm 40 ℃ viscosity 2/ s, for safe in utilization, preferably adopting point of ignition is 220 ℃ or higher those.
These have following structure: wherein to obtain oligopolymer, hydrogen is added to its terminal double link to alpha-olefin by oligomerization, and its typical general formula can be as follows:
Formula 2
Figure C20058002634500131
Wherein R represents alkyl, and n represents the integer of 1-6.
Polybutene is a kind of poly-alpha-olefin and can as catalyzer the starting material polymerization that mainly comprises iso-butylene is obtained by using aluminum chloride.Polybutene can be as it is or by its hydrogenation is used.
Synthetic ether oil (D) as using in the present invention can use alkyl diphenyl ether, i.e. dialkyl group phenyl ether, monoalkyl phenyl ether, its mixture etc.
It desirably is that viscosity at 40 ℃ is 90-150mm that the mineral oil that uses in the present invention (E) makes us 2The paraffin oil of/s.
Make us desirably, polymkeric substance ester oil (A) accounts for the 20-50wt% of whole grease compositions, and synthetic hydrocarbon oil (C) accounts for the 10-40wt% of whole grease compositions, and mineral oil (E) accounts for the 10-40wt% of whole grease compositions.Randomly, according to the present invention, polymkeric substance ester oil (A) accounts for the 20-50wt% of whole grease compositions, and synthetic ester oil (B) accounts for the 10-40wt% of whole grease compositions, and synthetic hydrocarbon oil (C) accounts for the 10-40wt% of whole grease compositions.Ester oil (B), synthetic hydrocarbon oil (C), synthetic ether oil (D) and mineral oil (E).Advantageously, according to the present invention, polymkeric substance ester oil (A) accounts for the 20-50wt% of whole grease compositions, synthetic ester oil (B) accounts for the 10-30wt% of whole grease compositions, synthetic hydrocarbon oil (C) accounts for the 2-10wt% of whole grease compositions, and synthetic ether oil (D) accounts for the 10-30wt% of whole grease compositions.
Grease composition of the present invention can comprise the various additives that are generally used for lubricating grease.Above-mentioned additive comprises the additive that is generally used for grease composition, i.e. antioxidant such as phenyl-α (β)-naphthylamines, alkyl diphenylamine, thiodiphenylamine, tert.-butyl phenol etc. and rust-preventive agent such as metal sulfonate, nonionic rust-preventive agent, amine rust-preventive agent etc.
Next specific embodiment will be discussed; Yet the present invention should not be subjected to their restriction.
Embodiment 1-10
As thickening material, use by lithium hydroxide, comprise the long-chain fat acid mixture with 26-32 carbon atom, stearic acid and 12-oxystearic acid synthetic lithium soap as the montanic acid of 28 carbon atoms of basal component.
As base oil, use viscosity to be about 800mm at 40 ℃ 2/ s (embodiment 1-6) and about 140mm 2The polymkeric substance ester oil of/s (embodiment 7-10).
As synthetic ester oil, use four ester oils (pentaerythritol ester).
As synthetic hydrocarbon oil, use poly-alpha-olefin oil.
As synthetic ether oil, use the alkyl diphenyl ether oil.
In addition, alkyl diphenylamine is as antioxidant, and calcium sulphonate is as rust-preventive agent.
With ratio as shown in table 1 each component is mixed, be heated 220-230 ℃, stir simultaneously, become fluid until whole mixtures.Pour each component in the stainless steel vessel feasible thickness, and be cooled to 50 ℃ or lower, obtain grease composition by using three roller roller refining machines to homogenize with 3-5mm.The component ratio and the test-results of grease composition are shown in Table 1.
Table 1
Figure C20058002634500151
Comparative Examples 1-6
In the mode same, by mixing various component preparation contrast grease composition 1-4 with embodiment 1-10.Two kinds of commercially available lubricating grease that get with known base oil and thickening material are used as Comparative Examples 5 and 6, and are as shown in table 2.In table 2, symbol ++ the component that expression is sneaked into.
The results are shown in the table 2 of test.
Table 2
Comparative Examples (1) (2) (3) (4) (5) (6)
Form Thickening material Senior hydroxy fatty acid lithium soap 8.5 8.5 5.0 10.5
The higher fatty acid lithium soap 3.5 3.5 7.0 1.5
The longer chain fatty acid lithium soap
Carbamide compound ++ ++
Base oil Polymkeric substance ester oil
Synthetic hydrocarbon oil 85.0 85.0 85.0 ++
Mineral oil 85.0 ++ ++
Pentaerythritol ester oil
The alkyl diphenyl ether oil
Additive Antioxidant, rust-preventive agent etc. 3.0 3.0 3.0 3.0 ++ ++
Character and performance Base oil viscosity (40℃) mm 2/s 99.85 30.47 30.47 30.47 41.25 108.4
Mixture thickness (25℃) 257 268 298 248 242 280
Dropping point ℃ 186 188 191 194 250 or higher 250 or higher
Thermotolerance C D D C B A
Bearing characteristics Acoustic properties A A A A C C
Volatility reduces B C C C C B
Long life D C C B A B
Total appraisal D D D C C C
The discussion of embodiment
Obtain base oil viscosity according to JIS K2283, and obtain the thickness of mixture according to JIS K22207 at 40 ℃.Obtain dropping point according to JIS K22208.In the bearing characteristics test, lubricating grease component to be tested is sealed in the small size bearing, thereon at its acoustic properties of indoor temperature measurement, and is 3000min under 100 ℃ of free air temperatures, 1000 hours rotational frequencies -1Bearing rotate the acoustic properties (acoustics life-span) that its volatile quantity and bearing are measured in the test back.About acoustic properties, use the Anderon instrument to rotate test fore-and-aft survey Anderon value at bearing.For volatile quantity, before and after bearing rotates test, bearing is weighed, obtain difference.For evaluation result separately, according to the results are shown in table 1 (embodiment) and the table 2 (Comparative Examples) that motor bearing lubricating grease composition desired properties is passed judgment on.More little Anderon value shows good more acoustic properties, and more little volatile quantity is superior more on performance.
Utilize optical interferometry to carry out thermal test by the oil film measuring method.Thicker oil film with higher temperature is better.The oil film metering facility as shown in Figure 1.
After applying test lubricating grease on the disk, by towards the direction of a disk basal surface rotary disk and contact condition is measured under from the load effect below the ball.(referring to Tribology Conference Abstracts for the Japanese Society ofTribologists, Tokyo 1997-5, the 328th page).
Below be measuring condition:
Load 20N (maximum hertz of pressure 0.53GPa, contact circle diameter 0.27mm)
Velocity of rotation 1.7m/s (using 608 profile shafts to hold) corresponding to 3000min-1
120 ℃ of temperature
Ball bearing steel ball (diameter is 3/4 inch)
Disk chromium/silica deposit glass disk, diameter are 10cm
Adopt 4 grades of grades to estimate." A " is particularly advantageous, and " B " is favourable, and " C " is general, and " D " is poor.
Below only be considered to illustrating to principle of the present invention.In addition because many variations and variant can occur to those skilled in the art, therefore do not wish to limit the invention to as mentioned above and shown in concrete structure and operation, and thereby can take to fall into the whole suitable variant and the Equivalent of the scope of the invention.

Claims (71)

1. heat-resisting lithium grease composition, it comprises:
A) greater than 5wt% to less than the lithium soap-thickened agent of 20wt%;
B) described lithium soap-thickened agent comprise longer chain fatty acid lithium soap with 26-32 carbon atom and
I) have the higher fatty acid lithium soap of 10-20 carbon atom, or
The senior hydroxy fatty acid lithium soap that ii) has one or more hydroxyls and 10 or more a plurality of carbon atoms, or
Iii) i and ii;
C) base oil of 95-80wt%;
D) described base oil comprises polymkeric substance ester oil, and wherein 8 or more a plurality of ester group are arranged with comb teeth in a side of chain molecule, and it is by formula 1 expression,
Formula 1
R wherein 1, R 2, R 3And R 4Represent alkyl separately, x is the integer that satisfies x 〉=2, and y is the integer that satisfies y 〉=2, and
Described base oil is 30-100mm 40 ℃ viscosity 2/ s.
2. according to the lithium grease composition of claim 1, wherein the lithium soap-thickened agent is 7.5wt%-17.5wt%.
3. according to the lithium grease composition of claim 1, wherein the lithium soap-thickened agent is 10wt%-15wt%.
4. according to the lithium grease composition of claim 2, wherein the lithium soap-thickened agent comprises the montanic acid lithium soap.
5. according to the lithium grease composition of claim 4, wherein the lithium soap-thickened agent comprises the montanic acid lithium soap as basal component.
6. according to each lithium grease composition in the claim 1,2 or 4, the amount of the longer chain fatty acid lithium soap of the wherein said 26-32 of a having carbon atom is the 0.1-10.0wt% of whole grease compositions.
7. according to each lithium grease composition in the claim 1,2 or 4, wherein said thickening material comprises 12-oxystearic acid lithium soap, and its content is the 1.5-10.5wt% of whole grease compositions.
8. according to each lithium grease composition in the claim 1,2 or 4, the content of the higher fatty acid lithium soap of the wherein said 10-20 of a having carbon atom is the 0.5-5.0wt% of whole grease compositions.
9. according to each lithium grease composition in the claim 1,2 or 4, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil, synthetic ether oil or mineral oil.
10. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil, synthetic ether oil and mineral oil.
11. according to each lithium grease composition in the claim 1,2 or 4, it also comprises the base oil that comprises synthetic hydrocarbon oil.
12. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic hydrocarbon oil and mineral oil.
13. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic hydrocarbon oil and synthetic ester oil.
14. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic hydrocarbon oil and synthetic ether oil.
15. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil and mineral oil.
16. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ether oil, synthetic hydrocarbon oil and mineral oil.
17. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil and synthetic ether oil.
18. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises mineral oil.
19. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ester oil and mineral oil.
20. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ether oil and mineral oil.
21. according to each lithium grease composition in the claim 1,2 and 4, it also comprises the base oil that comprises synthetic ester oil, synthetic ether oil and mineral oil.
22. according to each lithium grease composition in the claim 1,2 or 4, the content of wherein said polymkeric substance ester oil is the 20%-50wt% of whole grease compositions, described base oil comprises that content is that synthetic hydrocarbon oil and the content of the 10%-40wt% of whole grease compositions is the mineral oil of the 10-40wt% of whole grease compositions.
23. according to each lithium grease composition in the claim 1,2 and 4, it comprises that also content is the described polymkeric substance ester oil of the 20%-50wt% of whole grease compositions, and described base oil comprises that content is that synthetic ester oil and the content of the 10%-40wt% of whole grease compositions is the synthetic hydrocarbon oil of the 10-40wt% of whole grease compositions.
24. according to each lithium grease composition in the claim 1,2 and 4, it comprises that also content is the described polymkeric substance ester oil of the 20%-50wt% of whole grease compositions, and described base oil comprises that content is the synthetic hydrocarbon oil of the synthetic ester oil of the 10-30wt% of whole grease compositions, 2-10wt% that content is whole grease compositions and the synthetic ether of the 10-30wt% that content is whole grease compositions.
25. according to each lithium grease composition in the claim 1,2 or 4, it also comprises the grease composition that comprises antioxidant or rust-preventive agent or antioxidant and rust-preventive agent.
26. according to the lithium grease composition of claim 9, it also comprises the grease composition that comprises antioxidant or rust-preventive agent or antioxidant and rust-preventive agent.
27. according to each lithium grease composition in the claim 1,2 or 4, the amount of wherein said polymkeric substance ester oil is the 20wt%-50wt% of described grease composition.
28. according to claim 1,2 or 4 lithium grease composition, wherein said polymkeric substance ester oil exists in a large number, is the 20wt% of described base oil or more.
29. according to claim 1,2 or 4 lithium grease composition, the molecular weight of wherein said polymkeric substance ester oil is 1000-3000, is 100-1000mm 40 ℃ viscosity 2/ s.
30. according to the lithium grease composition of claim 9, the molecular weight of wherein said polymkeric substance ester oil is 1000-3000, is 100-1000mm 40 ℃ viscosity 2/ s.
31. according to the lithium grease composition of claim 9, wherein said synthetic ester oil is
A) have the synthesis of diester oil of following formula:
RCOO(CH 2) nCOOR′
Wherein R and R ' expression have the alkyl of 3-18 carbon atom, and are same to each other or different to each other, and n is 3-12;
B) have synthetic three ester oils of following formula:
R(CH 2COOR′) 3
Wherein R and R ' expression have the alkyl of 3-10 carbon atom;
C) have synthetic four ester oils of following formula:
R(CH 2COOR′) 4
Wherein R and R ' expression have the alkyl of 3-10 carbon atom; Or
D) synthetic neopentyl polyol ester oil.
32. according to the lithium grease composition of claim 9, wherein said synthetic hydrocarbon oil is poly-alpha-olefin oil or polybutene and olefin copolymer, is 20-100mm 40 ℃ viscosity 2/ s.
33. according to the lithium grease composition of claim 9, wherein said synthetic ether oil is an alkyl diphenyl ether.
34. according to the lithium grease composition of claim 33, wherein said synthetic ether oil is dialkyl group phenyl ether, monoalkyl phenyl ether or its mixture.
35. according to the lithium grease composition of claim 9, wherein said mineral oil is to be 90-150mm 40 ℃ viscosity 2The paraffin oil of/s.
36. a lower noise micro-machine bearing, it has
Be sealed in the heat-resisting lithium grease composition in the described bearing, wherein said heat-resisting lithium grease composition comprises:
A) greater than 5wt% to less than the lithium soap-thickened agent of 20wt%;
B) described lithium soap-thickened agent comprise longer chain fatty acid lithium soap with 26-32 carbon atom and
I) have 10-20 carbon atom the higher fatty acid lithium soap or
The senior hydroxy fatty acid lithium soap that ii) has one or more hydroxyls and 10 or more a plurality of carbon atoms, or
Iii) i and ii;
C) base oil of 95-80wt%;
D) described base oil comprises polymkeric substance ester oil, and wherein 8 or more a plurality of ester group are arranged with comb teeth in a side of chain molecule, and it is by formula 1 expression,
Formula 1
Figure C2005800263450005C1
R wherein 1, R 2, R 3And R 4Represent alkyl separately, x is the integer that satisfies x 〉=2, and y is the integer that satisfies y 〉=2,
And described base oil is 30-100mm 40 ℃ viscosity 2/ s.
37. according to the lower noise micro-machine bearing of claim 36, wherein the lithium soap-thickened agent is 7.5wt%-17.5wt%.
38. according to the lower noise micro-machine bearing of claim 36, wherein the lithium soap-thickened agent is 10wt%-15wt%.
39., wherein in the lithium soap-thickened agent, comprise the montanic acid lithium soap according to the lower noise micro-machine bearing of claim 37.
40. according to each lower noise micro-machine bearing in the claim 36,37 or 39, the amount of the longer chain fatty acid lithium soap of the wherein said 26-32 of a having carbon atom is the 0.1-10.0wt% of whole grease compositions.
41. according to each lower noise micro-machine bearing in the claim 36,37 or 39, wherein said thickening material comprises 12-oxystearic acid lithium soap, its content is the 1.5-10.5wt% of whole grease compositions.
42. according to each lower noise micro-machine bearing in the claim 36,37 or 39, the amount of the higher fatty acid lithium soap of the wherein said 10-20 of a having carbon atom is the 0.5-5.0wt% of whole grease compositions.
43. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil, synthetic ether oil or mineral oil.
44. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil, synthetic ether oil and mineral oil.
45. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic hydrocarbon oil.
46. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic hydrocarbon oil and mineral oil.
47. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic hydrocarbon oil and synthetic ester oil.
48. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic hydrocarbon oil and synthetic ether oil.
49. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil and mineral oil.
50. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ether oil, synthetic hydrocarbon oil and mineral oil.
51. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ester oil, synthetic hydrocarbon oil and synthetic ether oil.
52. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises mineral oil.
53. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ester oil and mineral oil.
54. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ether oil and mineral oil.
55. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the base oil that comprises synthetic ester oil, synthetic ether oil and mineral oil.
56. according to each lower noise micro-machine bearing in the claim 36,37 or 39, the content of wherein said polymkeric substance ester oil is the 20%-50wt% of whole grease compositions, and described base oil comprises that content is that synthetic hydrocarbon oil and the content of the 10-40wt% of whole grease compositions is the mineral oil of the 10-40wt% of whole grease compositions.
57. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it comprises that also content is the described polymkeric substance ester oil of the 20%-50wt% of whole grease compositions, and described base oil comprises that content is that synthetic ester oil and the content of the 10-40wt% of whole grease compositions is the synthetic hydrocarbon oil of the 10-40wt% of whole grease compositions.
58. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it comprises that also content is the described polymkeric substance ester oil of the 20%-50wt% of whole grease compositions, and described base oil comprises that content is the synthetic hydrocarbon oil of the synthetic ester oil of the 10-30wt% of whole grease compositions, 2-10wt% that content is whole grease compositions and the synthetic ether of the 10-30wt% that content is whole grease compositions.
59. according to each lower noise micro-machine bearing in the claim 36,37 or 39, it also comprises the grease composition that comprises antioxidant or rust-preventive agent or antioxidant and rust-preventive agent.
60. according to the lower noise micro-machine bearing of claim 43, it also comprises the grease composition that comprises antioxidant or rust-preventive agent or antioxidant and rust-preventive agent.
61. according to each lower noise micro-machine bearing in the claim 36,37 or 39, the amount of wherein said polymkeric substance ester oil is the 20-50wt% of described grease composition.
62. according to each lower noise micro-machine bearing in the claim 36,37 or 39, wherein said polymkeric substance ester oil exists in a large number, is the 20wt% of described base oil or more.
63. according to each lower noise micro-machine bearing in the claim 36,37 or 39, the molecular weight of wherein said polymkeric substance ester oil is 1000-3000, is 100-1000mm 40 ° viscosity 2/ s.
64. according to the lower noise micro-machine bearing of claim 43, the molecular weight of wherein said polymkeric substance ester oil is 1,000-3, and 000, be 100-1000mm 40 ℃ viscosity 2/ s.
65. according to the lower noise micro-machine bearing of claim 43, wherein said synthetic ester oil is:
A) have the synthesis of diester oil of following formula:
RCOO(CH 2) nCOOR′
R and R ' expression have the alkyl of 3-18 carbon atom, and are same to each other or different to each other, and n is 3-12;
B) have synthetic three ester oils of following formula:
R(CH 2COOR′) 3
Wherein R and R ' expression have the alkyl of 3-10 carbon atom;
C) have synthetic four ester oils of following formula:
R(CH 2COOR′) 4
Wherein R and R ' expression have the alkyl of 3-10 carbon atom; Or
D) synthetic neopentyl polyol ester oil.
66. according to the lower noise micro-machine bearing of claim 43, wherein said synthetic hydrocarbon oil is poly-alpha-olefin oil or polybutene and olefin copolymer, is 20-100mm 40 ℃ viscosity 2/ s.
67. according to the lower noise micro-machine bearing of claim 43, wherein said synthetic ether oil is an alkyl diphenyl ether.
68. according to the lower noise micro-machine bearing of claim 67, wherein said synthetic ether oil is dialkyl group phenyl ether, monoalkyl phenyl ether or its mixture.
69. according to the lower noise micro-machine bearing of claim 43, wherein said mineral oil is to be 90-150mm 40 ℃ viscosity 2The paraffin oil of/s.
70. an air-conditioning, it comprises motor; Described motor has one or more according to each bearing in the claim 36,37 or 39.
71. a gas blower that is used for image documentation equipment, it comprises:
A) motor;
B) described motor has one or more according to each bearing in the claim 36,37 or 39.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105062638A (en) * 2015-08-11 2015-11-18 广西大学 Environment-friendly ultralow-temperature bearing grease composition with low noise performance

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105802716B (en) * 2015-01-21 2020-03-24 精工电子有限公司 Grease for rolling bearing, rolling bearing device, and information recording/reproducing device
CN105802704B (en) * 2015-01-21 2020-04-17 精工电子有限公司 Grease, rolling bearing device, and information recording/reproducing device
JP6754565B2 (en) * 2015-01-21 2020-09-16 セイコーインスツル株式会社 Grease, rolling bearings, rolling bearing devices and information recording / playback devices
CN105482886A (en) * 2015-11-25 2016-04-13 铜陵市金利电子有限公司 Heatproof electric power lubricating grease
CN105524687B (en) * 2015-12-23 2018-10-30 中山大学惠州研究院 A kind of lithium base grease and preparation method thereof for RV retarders
US10145417B2 (en) * 2016-06-30 2018-12-04 Minebea Mitsumi Inc. Grease composition-filled ball bearing, pivot assembly bearing including the ball bearing, and hard disk drive including the pivot assembly bearing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998745A (en) * 1975-02-12 1976-12-21 Texaco Inc. Method for manufacturing traction motor gear lubricant
JPS61141795A (en) * 1985-12-14 1986-06-28 Showa Shell Sekiyu Kk High-dropping point lithium complex grease composition improved in sound characteristics
JP3514574B2 (en) * 1996-01-30 2004-03-31 Ｎｔｎ株式会社 Grease for sealing bearing
GB9803367D0 (en) * 1998-02-17 1998-04-15 Exxon Research Engineering Co Lubricating grease composition and preparation
US6417143B1 (en) * 1998-10-30 2002-07-09 Ntn Corporation Rolling bearings and greases for the same
EP1013748B1 (en) * 1998-12-22 2005-05-04 Kyodo Yushi Co., Ltd. Lubricating grease composition for bearings of electronic devices
JP4464498B2 (en) * 1999-09-08 2010-05-19 日本グリース株式会社 Bearing grease composition for motor
JP2001072989A (en) * 1999-09-08 2001-03-21 Minebea Co Ltd Bearing for high-efficiency motor
JP2002265970A (en) * 2001-03-14 2002-09-18 Koyo Seiko Co Ltd Grease composition and rolling bearing lubricated with the grease composition
JP2003231893A (en) * 2002-02-12 2003-08-19 Nsk Ltd Grease composition, rolling bearing and spindle motor
JP2003343584A (en) * 2002-05-24 2003-12-03 Nsk Ltd Roller bearing for motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105062638A (en) * 2015-08-11 2015-11-18 广西大学 Environment-friendly ultralow-temperature bearing grease composition with low noise performance

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