KR20170064514A - A Grease For Rolling Bearing - Google Patents
A Grease For Rolling Bearing Download PDFInfo
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- KR20170064514A KR20170064514A KR1020170065808A KR20170065808A KR20170064514A KR 20170064514 A KR20170064514 A KR 20170064514A KR 1020170065808 A KR1020170065808 A KR 1020170065808A KR 20170065808 A KR20170065808 A KR 20170065808A KR 20170064514 A KR20170064514 A KR 20170064514A
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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
- C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
- C10M103/06—Metal compounds
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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
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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
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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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/047—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and macromolecular compounds
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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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
-
- 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
Abstract
본 발명의 구름 베어링용 그리스는 외륜과, 내륜과, 상기 내륜과 외륜 사이에 구비되는 복수의 전동체로 이루어지는 구름 베어링에 투입되는 구름 베어링용 그리스에 있어서; 그리스와, 나노 이황화텅스텐(WS2) 입자로 이루어지며; 상기 그리스는 기유와 증주제로 이루어지는 것을 특징으로 하는 구름 베어링용 그리스에 관한 것이다.A grease for a rolling bearing according to the present invention is a grease for a rolling bearing which is inserted into a rolling bearing comprising an outer ring, an inner ring, and a plurality of rolling elements provided between the inner ring and the outer ring; Grease, and tungsten nano-disulfide (WS 2 ) particles; Wherein the grease is made of a base oil and a thickener.
Description
본 발명은 구름 베어링용 그리스에 관한 것으로서, 더욱 상세하게는 그리스에 나노입자 크기의 이황화텅스텐(WS2)이 포함되어 고온에서 성능이 향상되고, Alternator, Electro-Magnetic Clutch, Idler-Pulley 등과 같은 전장 환경에서 베어링 수명이 향상되는 구름 베어링용 그리스에 관한 것이다.More particularly, the present invention relates to a grease for a rolling bearing, and more particularly to a grease for a rolling bearing, which comprises a grease containing tungsten disulfide (WS 2 ) having a nanoparticle size and having improved performance at a high temperature and having an electric field such as Alternator, Electro-Magnetic Clutch, Idler- To a grease for a rolling bearing in which the bearing life is improved in an environment.
그리스는 가전제품 및 소비재 전자제품 분야를 비롯하여 수송기술, 물건조작기술, 기계조성, 사무과학기술 및 산업시스템에 응용되고 있다. 베어링에서 그리스는 그리스의 분리막 및 하중-전달막이 서로 미끄러지거나 또는 서로 구르는 부품들 사이에서 형성되도록 하는 역할을 한다. 이는 마모가 일어나지 않도록 접촉을 방지한다. Greece is used in the fields of consumer electronics and consumer electronics as well as transport technology, object manipulation technology, machine construction, office science technology and industrial systems. The grease in the bearing serves to ensure that the grease separator and the load-transfer membrane are formed between the parts that slide or roll with each other. This prevents contact so that wear does not occur.
그러므로 윤활유는 회전 속도가 높고 하중이 큰 극단의 운전 조건, 회전 속도 및 부하가 높거나 또는 외부 열원으로 인해 발생하는 고온 조건, 냉방 환경에서 베어링의 자기가열이 낮거나 또는 냉방 환경으로의 강제적 열손실로 인한 낮은 온도 조건, 저압력, 저소음, 정기적인 재윤활 없이도 작동시간을 길게 연장하는 것 등의 사용자가 원하는 특이한 운전 조건들, 바람직하지 못한 주변 조건들 및 치명적인 베어링의 밀봉, 및 원심력, 비중, 진동 등과 같은 동적인 영향 등의 조건을 만족해야 한다.Therefore, the lubricating oil is required to have a high rotational speed and a high load at an extreme operating condition, a high rotational speed and a high load, or a high temperature caused by an external heat source, a low self-heating of the bearing in a cooling environment, Specific operating conditions, undesirable ambient conditions, and sealing of deadly bearings, such as low temperature, low pressure, low noise, extended operating time without periodic re-lubrication, and centrifugal force, specific gravity, Dynamic influences such as vibrations and the like must be satisfied.
종래에 고온, 고속, 고하중용 베어링의 성능을 가지고 있는 윤활 그리스로는 말단기에 사이클로헥실(cyclohexyl) 그룹을 포함하는 디우레아 증주제에 알킬디페닐에테르 오일(alkyldiphenyl ether oil)을 기유로 사용하여 구성하였다. 또한 종래에는 고온에서 수명을 늘리기 위해 불소를 첨가하여 사용하였다.Conventionally, lubricating greases having performance of bearings for high temperature, high speed and high load are composed of alkyldiphenyl ether oil as a base oil in a diurea thickener containing a cyclohexyl group at the terminal end Respectively. In addition, fluorine was added to increase the lifetime at a high temperature.
그러나 종래의 베어링용 윤활 조성물은 디우레아 증주제를 적용하고, 기유로서 사용한 알킬디페닐 에테르 오일은 고속, 고하중, 고온 조건에서 충분한 윤활 수명을 만족시키는데 어려웠으며, 불소의 가격이 비싸 효율적이지 못한 문제점이 있었다.However, the conventional lubricating composition for a bearing is difficult to satisfy a sufficient lubricating life at high speed, high load and high temperature by applying a diurea thickener and the alkyl diphenyl ether oil used as a base oil has a problem that the price of fluorine is expensive and inefficient .
본 발명은 상기 문제점을 해결하기 위해 제안된 것으로, 고속, 고하중, 고온에서 베어링의 윤활 수명을 증가시키는 구름 베어링용 그리스를 제공하는데 목적이 있다.SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a grease for a rolling bearing which increases the lubrication life of bearings at high speed, high load and high temperature.
본 발명의 구름 베어링용 그리스는 외륜과, 내륜과, 상기 내륜과 외륜 사이에 구비되는 복수의 전동체로 이루어지는 구름 베어링에 투입되는 구름 베어링용 그리스에 있어서; 그리스와, 나노 이황화텅스텐(WS2) 입자로 이루어지며; 상기 그리스는 기유와 증주제로 이루어지는 것을 특징으로 하는 구름 베어링용 그리스를 제공한다.A grease for a rolling bearing according to the present invention is a grease for a rolling bearing which is inserted into a rolling bearing comprising an outer ring, an inner ring, and a plurality of rolling elements provided between the inner ring and the outer ring; Grease, and tungsten nano-disulfide (WS 2 ) particles; Wherein the grease is made of a base oil and a thickener.
상기에서, 상기 기유는 광유, 에테르계유, 에스테르계유, 합성 탄화수소유 중 적어도 1종의 기유인 것을 특징으로 한다.The base oil is characterized in that it is at least one base oil selected from the group consisting of mineral oil, ether-based oil, ester-based oil and synthetic hydrocarbon oil.
상기에서, 상기 증주제는 비누계, 비비누계 중 적어도 1종의 증주제인 것을 특징으로 한다.In the above, the thickener is characterized by being at least one thickener selected from the group consisting of a soap type and a bovine type.
상기에서, 상기 나노 이황화텅스텐 입자의 크기는 100∼300㎚ 범위인 것을 특징으로 한다.The size of the tungsten nano disulfide particles is in the range of 100 to 300 nm.
상기에서, 상기 나노 이황화텅스텐 입자는 원통형인 것을 특징으로 한다.The tungsten nano disulfide particles are cylindrical in shape.
상기에서, 상기 나노 이황화텅스텐 입자는 외경이 100∼300㎚ 범위이며, 길이는 외경의 3배인 것을 특징으로 한다.The tungsten nano disulfide particles have an outer diameter in the range of 100 to 300 nm and a length of three times the outer diameter.
상기에서, 상기 나노 이황화텅스텐 입자는 그리스 95∼98중량(wt)％에 2∼5중량(wt)％가 혼합되는 것을 특징으로 한다.The tungsten nano disulfide particles are mixed in an amount of 2 to 5 wt% with respect to 95 to 98 wt% of grease.
본 발명에 따르는 구름 베어링용 그리스는 그리스에 나노 이황화텅스텐 입자를 포함시킴으로써 고속, 고하중, 고온(180℃) 조건에서 베어링의 수명이 3배 이상 증가되는 효과가 있다.The grease for rolling bearings according to the present invention has the effect of increasing the service life of bearings by three times or more at high speed, high load and high temperature (180 DEG C) condition by including tungsten nano disulfide particles in the grease.
도 1은 베어링의 구조를 도시한 사시도이며,
도 2는 도 1의 베어링의 일측을 절개한 도면이고,
도 3은 본 발명에 따른 구름 베어링용 그리스를 적용한 베어링의 수명을 도시한 그래프이며,
도 4는 본 발명에 따른 구름 베어링용 그리스의 나노 이황화텅스텐(WS2) 입자의 형태를 도시한 도면이다.1 is a perspective view showing the structure of a bearing,
FIG. 2 is a cross-sectional view of one side of the bearing of FIG. 1,
3 is a graph showing the service life of a bearing using grease for a rolling bearing according to the present invention,
4 is a view showing the shape of a tungsten (WS 2 ) disulfide (WS 2 ) particle of a grease for a rolling bearing according to the present invention.
이하 첨부된 도면을 참조하여 구름 베어링용 그리스를 상세히 설명한다.Hereinafter, the grease for a rolling bearing will be described in detail with reference to the accompanying drawings.
도 1은 베어링의 구조를 도시한 사시도이며, 도 2는 도 1의 베어링의 일측을 절개한 도면이고, 도 3은 본 발명에 따른 구름 베어링용 그리스를 적용한 베어링의 수명을 도시한 그래프이며, 도 4는 본 발명에 따른 구름 베어링용 그리스의 나노 이황화텅스텐(WS2) 입자의 형태를 도시한 도면이다.FIG. 1 is a perspective view showing the structure of a bearing, FIG. 2 is a cross-sectional view of one side of the bearing shown in FIG. 1, FIG. 3 is a graph showing the service life of a bearing using a grease for a rolling bearing according to the present invention, 4 is a view showing the shape of a tungsten (WS 2 ) disulfide (WS 2 ) particle of a grease for a rolling bearing according to the present invention.
본 발명에 따른 구름 베어링용 그리스는 구름 베어링에 투입되어 이용된다. 상기 구름 베어링용 그리스는 그리스와, 나노 이황화텅스텐(WS2)으로 이루어진다.The grease for a rolling bearing according to the present invention is put into a rolling bearing and used. The grease for the rolling bearing is made of grease and tungsten nano disulfide (WS 2 ).
상기 그리스는 베어링 표면에 코팅층을 형성하는 역할을 한다. 상기 그리스는 기유와, 증주제와, 첨가제가 배합되어 이루어진다.The grease serves to form a coating layer on the bearing surface. The grease is made by blending a base oil, a thickener, and an additive.
상기 기유는 광유와, 합성 윤활유로 나누어진다. 상기 광유로는 500NT 오일 등이 이용된다. 상기 합성 윤활유는 에테르계유와, 에스테르계유와, 합성탄화수소유 등이 이용된다.The base oil is divided into mineral oil and synthetic lubricating oil. As the mineral oil, 500NT oil or the like is used. As the synthetic lubricating oil, ether-based oil, ester-based oil, synthetic hydrocarbon oil and the like are used.
에테르계유는 알킬디페닐에테르 오일(alkyldiphenyl ether oil), 폴리페닐 에테르 오일(polyphenyl ether oil), 알킬페닐 에테르 오일(alkylphenyl ether oil) 등이 있다. 에스테르계유는 알킬디에테르 알킬모노에스테르(alkylether alkylmonoesther)화합물, 폴리올에스테르 오일(polyolesther oil) 등이 있다. 합성탄화수소유는 폴리-알파-올레핀(poly-α-olefin) 등이 있다.The ether-based oils include alkyldiphenyl ether oil, polyphenyl ether oil, and alkylphenyl ether oil. The ester-based oils include alkylether alkylmonoesther compounds, polyol ester oils, and the like. Synthetic hydrocarbon oils include poly-alpha-olefins and the like.
상기 증주제는 비누계와, 비비누계로 나누어진다.The thickener is divided into a soap base and a non-base base.
상기 비누계는 리튬(Li), 나트륨(Na), 알루미늄(Al) 등이 이용된다. 상기 비비누계는 유기점토, 실리카겔, PTFE(Polytetrafluoro ethylene), 우레아계 등이 이용된다. 비비누계 중 우레아계는 말단기에 사이클로헥실 그룹이 포함된 디우레아 화합물 등이 있다.Examples of the soap system include lithium (Li), sodium (Na), and aluminum (Al). Examples of the bivene base include organic clay, silica gel, PTFE (polytetrafluoroethylene), and urea. Among ubiquitous compounds, urea compounds include diurea compounds containing a cyclohexyl group in the terminal group.
상기 첨가제는 산화방지제, 방청제, 극압제, 내마모제, 점착성 향상제, 점도지수 향상제 등이 있다. 상기 첨가제는 그리스에 포함되지 않을 수도 있다. Such additives include antioxidants, rust inhibitors, extreme pressure agents, antiwear agents, tackiness improvers, viscosity index improvers, and the like. The additive may not be included in the grease.
산화방지제로는 디페닐아민(Diphenylamine), 페닐-α-나프틸아민(Phenyl-α-naphthylamine) 등이 있다. 방청제로는 설포네이트 소듐 나이트라이드(Surphonates Sodium Nitride) 등이 있다. 고하중에서 증착을 방지하는 극압제는 염소, 인, 황을 함유하는 유기화합물 등이 있다. 내마모제는 트리크레실 포스페이트(Tricresyl Phosphate), Zn-DTP(Zinc Dialkyldithiophosphate) 등이 있다. 점착성 향상제는 폴리이소브틸렌(Polyisobutylene) 등의 각종 폴리머가 있다. 상기 첨가제 전체에 대해 50중량(wt)％를 차지하는 점도지수 향상제는 에틸렌-프로필렌 공중합체(OCP), 알킬 메타크릴레이트(Alkylmethacrylate) 등이 있다.Examples of the antioxidant include diphenylamine, phenyl-α-naphthylamine, and the like. Surfactants include Surphonates Sodium Nitride and the like. Extreme pressure agents that prevent deposition in high loads include organic compounds containing chlorine, phosphorus, and sulfur. Anti-wear agents include Tricresyl Phosphate and Zn-DTP (Zinc Dialkyldithiophosphate). The adhesiveness improver includes various polymers such as polyisobutylene. The viscosity index improver that accounts for 50 wt% of the total additive is ethylene-propylene copolymer (OCP), alkyl methacrylate, and the like.
상기 나노 이황화텅스텐(WS2) 입자는 나노 크기로 이루어진다. 상기 나노 이황화텅스텐 입자의 크기는 100∼300㎚ 범위로 구비된다. 상기 나노 이황화텅스텐 입자의 형태는 원통형, 판상형 등으로 이루어진다. 상기 나노 이황화텅스텐 입자의 형태 중 원통형으로 이루어지는 것이 바람직하다. 도 4에 도시된 바와 같이, 상기 나노 이황화텅스텐 입자는 6각형 격자구조의 원통형으로 이루어진다.The tungsten nano disulfide (WS 2 ) particles are nano-sized. The size of the tungsten nano disulfide particles is in the range of 100 to 300 nm. The shape of the tungsten nano disulfide particles is cylindrical, plate-like, or the like. It is preferable that the tungsten nano-disulfide particles have a cylindrical shape. As shown in FIG. 4, the tungsten nano disulfide particles have a hexagonal lattice structure.
상기 나노 이황화텅스텐 입자가 원통형일 때, 나노 이황화텅스텐 입자의 외경(D)은 100∼300㎚ 범위로 이루어지고, 길이는 외경의 3배인 300∼900㎚ 범위로 이루어진다.When the tungsten nano disulfide particles are cylindrical, the outer diameter (D) of the tungsten nano disulfide particles is in the range of 100 to 300 nm, and the length is in the range of 300 to 900 nm, which is three times the outer diameter.
본 발명인 구름 베어링용 그리스는 상기 기유와 증주제와 첨가제로 이루어진 그리스에 상기 나노 이황화텅스텐 입자가 혼합되어 이루어진다. 도 3에 도시된 바와 같이, 상기 나노 이황화텅스텐 입자는 상기 그리스 95∼98중량(wt)％에 2∼5중량(wt)％가 혼합되는 것이 바람직하다. 상기 나노 이황화텅스텐 입자가 혼합됨으로써 고온(180℃) 조건에서 3배 이상의 수명이 증가된다.The grease for rolling bearings of the present invention is formed by mixing the tungsten nano disulfide particles with the grease consisting of the base oil, the thickener and the additive. As shown in FIG. 3, it is preferable that the tungsten nano disulfide particles are mixed in an amount of 2 to 5 wt% with respect to 95 to 98 wt% of the grease. By mixing the tungsten nano-disulfide particles, the lifetime is increased three times or more at high temperature (180 ° C).
도 3에 도시된 바와 같이, 나노 이황화텅스텐 입자가 2중량(wt)％ 보다 소량일 때, 수명은 증가하지만 상기 나노 이황화텅스텐 입자의 양이 충분하지 않아 최대 수명에 도달되지는 않는다. 나노 이황화텅스텐 입자가 5중량(wt)％ 보다 과량일 때, 상기 그리스와 나노 이황화텅스텐 입자의 합성이 이루어지지 않아 과량을 혼합할 경우 수명이 감소된다.As shown in FIG. 3, when the amount of the tungsten nano disulfide particles is less than 2 wt%, the lifetime is increased, but the amount of the tungsten nano-disulfide particles is not sufficient and the maximum lifetime is not reached. When the amount of tungsten nano-disulfide is more than 5 wt%, synthesis of the tungsten oxide and tungsten nano-disulfide is not carried out.
상기 나노 이황화텅스텐 입자가 그리스와 혼합됨으로써 베어링 작동시 베어링 표면에 코팅층 형성을 촉진시킨다. 베어링 표면에 형성된 코팅층은 0.1∼0.2㎛ 두께로 형성된다. The tungsten nano-disulfide particles are mixed with grease to promote the formation of a coating layer on the bearing surface during bearing operation. The coating layer formed on the bearing surface is formed to a thickness of 0.1 to 0.2 mu m.
이하 본 발명에 따른 구름 베어링용 그리스의 혼합 방법의 실시 예를 설명한다. Hereinafter, an embodiment of a mixing method of a grease for a rolling bearing according to the present invention will be described.
그리스를 제조하는 첫번째 단계는 기유와 증주제를 투입하여 혼합시킨다. 기유는 알킬디페닐 에테르 오일을 이용하고, 증주제로는 디우레아 화합물을 이용한다.The first step in the manufacture of grease is to mix and mix base oil and thickener. An alkyl diphenyl ether oil is used as the base oil, and a diurea compound is used as the thickener.
알킬디페닐 에테르오일의 함유량은 그리스 조성물 전체에 대하여 50∼70중량(wt)％ 이상이 바람직하고, 디우레아 화합물의 함유량은 그리스 조성물 전체에 대하여 20∼30중량(wt)％ 범위로 혼합이 이루어진다.The content of the alkyl diphenyl ether oil is preferably 50 to 70 wt% or more with respect to the whole of the grease composition, and the content of the diurea compound is mixed in the range of 20 to 30 wt% .
다음에는 기유와 증주제가 혼합된 혼합물을 히팅(heating)시킨다. 이 과정에서 첨가제가 투입된다. 첨가제는 전체 조성물에 대하여 0.2∼20중량(wt)％ 투입된다.Next, the mixture containing the base oil and the thickener is heated. In this process, additives are added. The additive is added in an amount of 0.2 to 20 wt.% (Wt.%) Based on the total composition.
첨가제 투입 후 완성된 기존 그리스에 나노 이황화텅스텐 입자가 투입된다. 상기 나노 이황화텅스텐 입자는 그리스 95∼98중량(wt)％에 2∼5중량(wt)％가 투입된다. 상기 나노이황화 텅스텐 입자는 첨가제 투입 시 함께 투입될 수도 있다.After the addition of the additive, the tungsten nano-disulfide particles are added to the finished grease. The tungsten nano disulfide particles are added in an amount of 2 to 5 wt% based on 95 to 98 wt% of the grease. The tungsten nano disulfide particles may be added together when the additive is added.
지금까지 본 발명에 따른 구름 베어링용 그리스는 도면에 도시된 실시 예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당업자라면 누구든지 이로부터 다양한 변형 및 균등한 다른 실시 예가 가능하다는 점을 이해할 것이다. 따라서, 진정한 기술적 보호범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the grease for a rolling bearing according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the examples are merely illustrative and that various modifications and equivalent other embodiments are possible for those skilled in the art. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.
1 : 베어링 외륜
2 : 베어링 내륜
3 : 리테이너
4 : 볼
5 : 윤활 조성물1: Bearing outer ring 2: Bearing inner ring
3: retainer 4: ball
5: Lubricating composition
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170065808A KR20170064514A (en) | 2017-05-29 | 2017-05-29 | A Grease For Rolling Bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020170065808A KR20170064514A (en) | 2017-05-29 | 2017-05-29 | A Grease For Rolling Bearing |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140176113A Division KR20160070293A (en) | 2014-12-09 | 2014-12-09 | A Grease For Rolling Bearing |
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| KR20170064514A true KR20170064514A (en) | 2017-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017126073A1 (en) | 2017-05-25 | 2018-11-29 | Hyundai Motor Company | Starter-generator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017126073A1 (en) | 2017-05-25 | 2018-11-29 | Hyundai Motor Company | Starter-generator system |
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