JPH09125086A - Oil-containing bearing oil composition - Google Patents
Oil-containing bearing oil compositionInfo
- Publication number
- JPH09125086A JPH09125086A JP7282705A JP28270595A JPH09125086A JP H09125086 A JPH09125086 A JP H09125086A JP 7282705 A JP7282705 A JP 7282705A JP 28270595 A JP28270595 A JP 28270595A JP H09125086 A JPH09125086 A JP H09125086A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- oil composition
- bearing
- polyolefin
- polyol ester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sliding-Contact Bearings (AREA)
- Lubricants (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は含油軸受用油組成物
に関し、詳しくは、優れた高温安定性，酸化安定性，低
温粘度特性を有し、焼結合金軸受部における潤滑特性に
優れ、かつ各種軸受材適合性に優れた含油軸受油組成物
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil composition for oil-impregnated bearings, and more particularly, it has excellent high-temperature stability, oxidation stability and low-temperature viscosity characteristics, and has excellent lubricating characteristics in a sintered alloy bearing portion, and The present invention relates to an oil-containing bearing oil composition having excellent compatibility with various bearing materials.
【０００２】[0002]
【従来の技術】焼結合金軸受は、鉄，銅，錫，鉛，亜
鉛，炭素，その他の金属粉末を原料として、これを焼結
成形して得られる多孔性物質に潤滑油を含浸させたもの
である。この焼結材料は銅系と鉄系に大別でき、銅系の
ものは音響、家電製品（ＶＴＲ，カーステレオ，扇風機
等）などの、また、鉄系のものは自動車電装部品（ファ
ンモーター等）などの各種モーターに用いられている
が、その品質は含浸している潤滑油（焼結合金軸受油）
の性能に支配される。即ち、このような焼結合金軸受油
は、高温時の耐熱性・酸化安定性に優れ、回転部の発熱
による蒸発性が低いことが要求され、またその多くは無
補給運転のため、長寿命性が要求される。更に、高低温
時における潤滑性や、焼結材料やその周辺部に使用され
ているプラスチック材料などに対する適合性も要求され
ている。加えて近年、焼結合金軸受の小型化や薄型化と
ともに、使用環境が過酷かつ多様になってきたため、焼
結合金軸受油においては上記特性の更なる向上が急務と
なっている。即ち、例えば自動車のラジエータのクーリ
ングファンモータ軸受においては、極寒冷地では約−４
０℃の低温となる場合があり、他方酷暑地においては夏
場にはエンジンの連続運転による放熱のため、１５０℃
程度の高温に達することがある。このような幅広い使用
温度範囲に対応するため、高温安定性，酸化安定性，低
温粘度特性，潤滑特性などの特性の更なる向上が望まれ
ているのである。このような軸受油として、例えば特開
昭６０−１９５９０４号，同６２−２８３１９１号，特
開平５−２０９６２３号，同５−２４０２５１号各公報
には、種々の焼結合金軸受油が記載されているが、この
ような焼結合金軸受油によってもその要求特性である上
記高温安定性，酸化安定性，低温粘度特性，軸受材適合
性，潤滑特性（耐摩耗性，低摩擦係数）のすべての特性
を満足することは出来なかった。2. Description of the Related Art Sintered alloy bearings use iron, copper, tin, lead, zinc, carbon, and other metal powders as raw materials and sinter-mold them to impregnate lubricating oil with a porous substance. It is a thing. This sintered material can be roughly divided into copper-based and iron-based materials. Copper-based materials such as acoustics and home appliances (VTRs, car stereos, fans, etc.), and iron-based materials include automobile electrical components (fan motors, etc.). ) Etc., but the quality is impregnated with lubricating oil (sintered alloy bearing oil)
Is dominated by the performance of. That is, such a sintered alloy bearing oil is required to have excellent heat resistance and oxidation stability at high temperatures and low evaporativeness due to heat generation in the rotating part. Sex is required. Further, lubricating properties at high and low temperatures and compatibility with a sintered material and a plastic material used for a peripheral portion thereof are also required. In addition, in recent years, as the sintered alloy bearings have become smaller and thinner and the operating environment has become more severe and diversified, it is an urgent task to further improve the above-mentioned characteristics in sintered alloy bearing oils. That is, for example, in a cooling fan motor bearing of a radiator of an automobile, it is about -4 in an extremely cold region.
The temperature may be as low as 0 ° C. On the other hand, in extremely hot areas, 150 ° C due to heat radiation from continuous engine operation in the summer.
May reach high temperatures. In order to cope with such a wide operating temperature range, further improvement in characteristics such as high temperature stability, oxidation stability, low temperature viscosity characteristics, and lubrication characteristics is desired. As such bearing oils, various sintered alloy bearing oils are described, for example, in JP-A-60-195904, JP-A-62-283191, JP-A-5-209623 and JP-A-5-240251. However, even with such a sintered alloy bearing oil, all of the required characteristics such as high temperature stability, oxidation stability, low temperature viscosity characteristics, bearing material compatibility, and lubrication characteristics (wear resistance, low friction coefficient) are required. It was not possible to satisfy the characteristics.
【０００３】[0003]
【発明が解決しようとする課題】本発明はこのような状
況下でなされたものである。即ち、本発明は焼結合金軸
受において、その耐摩耗性，低摩擦係数などの潤滑特
性、高温安定性、酸化安定性、低温粘度特性等を向上さ
せ、かつ軸受材適合性を向上せしめる含油軸受油組成物
を提供することを目的とする。The present invention has been made under such circumstances. That is, the present invention is an oil-impregnated bearing that improves the lubrication characteristics such as wear resistance and low friction coefficient, high temperature stability, oxidation stability, low temperature viscosity characteristics, and the like, as well as the compatibility of bearing materials in a sintered alloy bearing. It is intended to provide an oil composition.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、前記目的
を達成すべく鋭意研究を重ねた結果、基油として、特定
の化合物を組み合わせてなる合成油を用いることによ
り、焼結合金軸受における潤滑特性、高温安定性、酸化
安定性、低温粘度特性等を向上させ、更に軸受材適合性
を向上せしめることができることを見出した。すなわ
ち、本発明は、（ａ）ポリオレフィン及び（ｂ）ポリオ
ールエステルを含有する基油を含む含油軸受油組成物、
特に上記基油における（ａ）ポリオレフィンの（ｂ）ポ
リオールエステルに対する割合が、重量比で２０／８０
〜８０／２０である上記含油軸受油組成物を提供するも
のである。DISCLOSURE OF THE INVENTION As a result of intensive studies to achieve the above object, the inventors of the present invention have found that a sintered alloy bearing can be obtained by using a synthetic oil composed of a combination of specific compounds as a base oil. It has been found that it is possible to improve the lubrication characteristics, high temperature stability, oxidation stability, low temperature viscosity characteristics, etc., and further improve the bearing material compatibility. That is, the present invention provides an oil-bearing bearing oil composition containing a base oil containing (a) a polyolefin and (b) a polyol ester,
In particular, the ratio of (a) polyolefin to (b) polyol ester in the above base oil is 20/80 by weight.
The above oil-containing bearing oil composition is 80/20.
【０００５】[0005]
【発明の実施の形態】以下に、本発明を更に詳細に説明
する。本発明においては、含油軸受油組成物の基油とし
て、（ａ）ポリオレフィン及び（ｂ）ポリオールエステ
ルを含有するものが使用される。上記基油に用いられる
（ａ）ポリオレフィンとしては、その種類、各種性状に
ついては特に制限はないが、４０℃における動粘度が５
〜１００ｍｍ2 ／秒の範囲にあるものを使用することが
好ましい。上記動粘度が５ｍｍ2 ／秒未満の場合は耐引
火性，耐揮発性，耐荷重性等に不具合を生じる場合があ
り、また１００ｍｍ2 ／秒を超える場合は低温での粘度
が大きくなり低温流動性が損なわれる場合がある。この
ような理由から、上記範囲は１５〜７０ｍｍ2 ／秒であ
ることが更に好ましい。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. In the present invention, as the base oil of the oil-containing bearing oil composition, one containing (a) polyolefin and (b) polyol ester is used. The type and various properties of the (a) polyolefin used for the above base oil are not particularly limited, but the kinematic viscosity at 40 ° C. is 5
It is preferable to use one having a range of -100 mm 2 / sec. If the kinematic viscosity is less than 5 mm 2 / sec, problems such as flammability, volatility, and load resistance may occur, and if it exceeds 100 mm 2 / sec, the viscosity at low temperatures increases and low temperature flow occurs. The sex may be impaired. For this reason, the above range is more preferably 15 to 70 mm 2 / sec.
【０００６】また、本発明においては、（ａ）ポリオレ
フィンとして粘度指数が１１０以上、好ましくは１２０
以上であるものを使用することができる。この値が上記
範囲より低い場合は高温安定性や潤滑特性などが不充分
になる恐れがある。更に、上記ポリオレフィンは、流動
点が−３０℃以下、好ましくは−４０℃以下のものが使
用できる。この値がこの範囲を超える場合は低温粘度特
性が不充分になる恐れがある。本発明においては、上記
（ａ）ポリオレフィンとして、α−オレフィン重合体あ
るいはその共重合体が挙げられる。具体的には、炭素数
６〜１４のα−オレフィンオリゴマ−あるいはエチレン
−プロピレン共重合体などのエチレン−α−オレフィン
共重合体が好ましく使用でき、特に１−デセンのオリゴ
マーが好ましい。本発明においては、（ａ）ポリオレフ
ィンとして上記のものを一種あるいは二種以上組み合わ
せて使用することができる。In the present invention, the viscosity index of the polyolefin (a) is 110 or more, preferably 120.
The above can be used. If this value is lower than the above range, the high temperature stability and lubricating properties may be insufficient. Further, as the above-mentioned polyolefin, those having a pour point of −30 ° C. or lower, preferably −40 ° C. or lower can be used. If this value exceeds this range, the low temperature viscosity characteristics may be insufficient. In the present invention, the (a) polyolefin may be an α-olefin polymer or a copolymer thereof. Specifically, an α-olefin oligomer having 6 to 14 carbon atoms or an ethylene-α-olefin copolymer such as an ethylene-propylene copolymer can be preferably used, and an 1-decene oligomer is particularly preferable. In the present invention, the above (a) polyolefin may be used alone or in combination of two or more.
【０００７】また、本発明において（ｂ）ポリオールエ
ステルとは、多価アルコールとモノ脂肪酸とのエステル
化合物であり、多価アルコールとしては、ネオペンチル
グリコール，トリメチロールプロパン，ペンタエリスリ
トール，ジペンタエリスリトール等が好ましく挙げられ
る。また、モノ脂肪酸としては炭素数４〜１２の直鎖あ
るいは分岐の有機酸が使用でき、安定性などの点から飽
和脂肪酸が好ましい。上記有機酸の炭素数が４未満の場
合はエステルの蒸発量が多くなり、また所望の粘度の組
成物が得られにくい。また上記炭素数が１２を超える場
合は低温粘度が高くなる場合がある。In the present invention, the (b) polyol ester is an ester compound of a polyhydric alcohol and a monofatty acid, and examples of the polyhydric alcohol include neopentyl glycol, trimethylolpropane, pentaerythritol, dipentaerythritol and the like. Are preferred. As the mono-fatty acid, a linear or branched organic acid having 4 to 12 carbon atoms can be used, and a saturated fatty acid is preferable from the viewpoint of stability. When the number of carbon atoms in the organic acid is less than 4, the amount of ester evaporated increases and it is difficult to obtain a composition having a desired viscosity. When the number of carbon atoms exceeds 12, the low temperature viscosity may increase.
【０００８】本発明における（ｂ）ポリオールエステル
は、その種類、各種性状については特に制限はないが、
４０℃における動粘度が１０〜１００ｍｍ2 ／秒の範囲
にあるものを使用することが好ましい。上記動粘度が１
０ｍｍ2 ／秒未満の場合は耐引火性，耐揮発性，耐荷重
性等に不具合が生じる場合あり、また１００ｍｍ2 ／秒
を超える場合は低温での粘度が大きくなり低温流動性が
損なわれる場合がある。このような理由から、上記範囲
は１５〜７０ｍｍ2 ／秒であることが更に好ましい。ま
た、本発明においては、（ｂ）ポリオールエステルとし
て粘度指数が９０以上であるものを使用することができ
る。この値が上記範囲より低い場合は高温安定性や潤滑
特性などが不充分になる恐れがある。更に、上記ポリオ
レフィンは、流動点が−３０℃以下、好ましくは−３５
℃以下のものが使用できる。この値が上記の範囲を超え
る場合は低温粘度特性が不充分になる恐れがある。本発
明においては、（ｂ）ポリオールエステルとして上記の
ものを一種あるいは二種以上組み合わせて使用すること
ができる。The type and various properties of the (b) polyol ester in the present invention are not particularly limited,
It is preferable to use one having a kinematic viscosity at 40 ° C. in the range of 10 to 100 mm 2 / sec. The kinematic viscosity is 1
If it is less than 0 mm 2 / sec, problems such as flammability, volatility, and load resistance may occur, and if it exceeds 100 mm 2 / sec, viscosity at low temperature may increase and low-temperature fluidity may be impaired. There is. For this reason, the above range is more preferably 15 to 70 mm 2 / sec. Further, in the present invention, as the (b) polyol ester, one having a viscosity index of 90 or more can be used. If this value is lower than the above range, the high temperature stability and lubricating properties may be insufficient. Further, the above-mentioned polyolefin has a pour point of -30 ° C or lower, preferably -35.
Those below ℃ can be used. If this value exceeds the above range, the low temperature viscosity characteristics may be insufficient. In the present invention, the above (B) polyol ester may be used alone or in combination of two or more.
【０００９】上記基油における、（ａ）ポリオレフィン
及び（ｂ）ポリオールエステルの使用量は、（ａ）ポリ
オレフィンの（ｂ）ポリオールエステルに対する割合、
即ち（ａ）／（ｂ）重量比で２０／８０〜８０／２０の
範囲にあることが好ましい。この範囲内の使用量におい
ては、本発明の含油軸受油組成物は、ポリオールエステ
ル単独の場合に較べその摩擦係数の上昇が非常に少な
く、加えて良好な低温流動性を示す。すなわち、上記
（ａ）／（ｂ）が２０／８０未満の場合は低温流動性が
大きくなり、８０／２０を超える場合は摩擦係数が大き
くなるなど不都合な場合がある。本発明においては、上
記使用量は摩擦係数などの点から、更に２０／８０〜７
０／３０、特に２０／８０〜６０／４０の範囲内である
ことが好ましい。また、本発明の含油軸受油組成物は上
記（ａ）ポリオレフィン及び（ｂ）ポリオールエステル
を合計で８０重量％以上含有することが好ましい。この
含有量が８０重量％未満の場合は低温流動性が不充分と
なる。The amount of the (a) polyolefin and the (b) polyol ester used in the above base oil is the ratio of the (a) polyolefin to the (b) polyol ester,
That is, the weight ratio (a) / (b) is preferably in the range of 20/80 to 80/20. In the amount used within this range, the oil-containing bearing oil composition of the present invention has a much smaller increase in the friction coefficient than the case of using the polyol ester alone, and additionally exhibits good low temperature fluidity. That is, when the above (a) / (b) is less than 20/80, the low temperature fluidity becomes large, and when it exceeds 80/20, the friction coefficient becomes large, which may be inconvenient. In the present invention, the amount used is 20/80 to 7 from the viewpoint of the coefficient of friction and the like.
It is preferably 0/30, particularly preferably 20/80 to 60/40. The oil-containing bearing oil composition of the present invention preferably contains the above-mentioned (a) polyolefin and (b) polyol ester in a total amount of 80% by weight or more. When this content is less than 80% by weight, the low temperature fluidity becomes insufficient.
【００１０】本発明においては、上記基油に更に粘度指
数向上剤を配合することが好ましい。使用できる粘度指
数向上剤としては、ポリメタアクリレート，ポリイソブ
チレン，エチレン−プロピレン共重合体などが挙げら
れ、数平均分子量で１0,０００〜1,００0,０００、更に
１0,０００〜３０0,０００、特に１0,０００〜１０0,０
００のものが、剪断安定性などの点から好ましく使用で
きる。本発明においては、これらのうちポリメタアクリ
レートが低温特性などの点から特に好ましい。上記粘度
指数向上剤は、本発明の含油軸受油組成物中５〜２０重
量％含有されることが好ましい。上記含有量が５重量％
未満では粘度指数向上効果が小さく、２０重量％を超え
る場合は粘度が高くなりすぎる恐れがある。これらの粘
度指数向上剤は一種用いることもできるが、２種以上組
み合わせて使用することもできる。上記の基油は、粘度
指数で１８０以上、好ましくは２００以上のものを用い
ることが望ましく、高温での使用時に、軸受材料の油透
過性による“油圧の逃げ”を生じ、油膜強度が低下した
り、軸受からの油の漏洩量が増加し、軸受の寿命を短く
したり、周辺を汚すなどの不具合がなく、また低温始動
時に油の流動性低下により潤滑部への油の供給が不足す
るなどの問題も生じない。In the present invention, it is preferable to further add a viscosity index improver to the above base oil. Viscosity index improvers that can be used include polymethacrylate, polyisobutylene, ethylene-propylene copolymers, etc., with a number average molecular weight of 10,000 to 1,000,000, and further 10,000 to 300,000. Especially 10,000 to 100,0
No. 00 can be preferably used from the viewpoint of shear stability and the like. In the present invention, of these, polymethacrylate is particularly preferable from the viewpoint of low temperature characteristics and the like. The viscosity index improver is preferably contained in the oil-containing bearing oil composition of the present invention in an amount of 5 to 20% by weight. The above content is 5% by weight
If it is less than 20%, the effect of improving the viscosity index is small, and if it exceeds 20% by weight, the viscosity may be too high. These viscosity index improvers can be used alone or in combination of two or more. It is desirable to use a base oil having a viscosity index of 180 or more, preferably 200 or more, and when used at high temperature, "oil pressure escape" occurs due to the oil permeability of the bearing material, and the oil film strength decreases. And the amount of oil leaking from the bearing increases, there is no problem such as shortening the life of the bearing and polluting the surroundings.In addition, the fluidity of the oil decreases at low temperature start and the oil supply to the lubrication part becomes insufficient. There is no problem.
【００１１】本発明の含油軸受油組成物には、更に必要
に応じ、油性剤，無灰系分散剤，金属系清浄剤，摩擦調
整剤，酸化防止剤，界面活性剤，流動点降下剤，防錆
剤，腐食抑制剤，消泡剤などを用途に応じて配合するこ
とができる。これらの添加剤は含油軸受油組成物中合計
で１０重量％以下の量で使用することができる。また、
上記添加剤は一種あるいは二種以上組み合わせて使用す
ることができる。これらのうち、酸化防止剤としては、
例えば２，６−ジ−ｔ−ブチル−４−メチルフェノール
（ＤＢＰＣ）やビスフェノールなどのフェノール系酸化
防止剤、ジフェニルアミン，ジアルキル（特に、炭素数
４〜１６のアルキル）ジフェニルアミン，フェニル−α
−ナフチルアミンなどのアミン系酸化防止剤、ジチオリ
ン酸亜鉛（ＺｎＤＴＰ）などのチオリン酸塩やチオカル
バミン酸塩などの有機金属系酸化防止剤などが使用でき
る。上記酸化防止剤は、本発明の含油軸受油組成物中に
0.０１〜５重量％程度添加することができる。If necessary, the oil-containing bearing oil composition of the present invention further comprises an oiliness agent, an ashless dispersant, a metal detergent, a friction modifier, an antioxidant, a surfactant, a pour point depressant, Corrosion inhibitors, corrosion inhibitors, defoamers, etc. can be added depending on the application. These additives can be used in a total amount of 10% by weight or less in the oil-containing bearing oil composition. Also,
The above additives may be used alone or in combination of two or more. Of these, antioxidants include
For example, phenolic antioxidants such as 2,6-di-t-butyl-4-methylphenol (DBPC) and bisphenol, diphenylamine, dialkyl (particularly, alkyl having 4 to 16 carbon atoms) diphenylamine, phenyl-α.
An amine antioxidant such as naphthylamine, an organometallic antioxidant such as thiophosphate or thiocarbamate such as zinc dithiophosphate (ZnDTP) can be used. The antioxidant is contained in the oil-containing bearing oil composition of the present invention.
About 0.01 to 5% by weight can be added.
【００１２】また、防錆剤としては脂肪族アミン類，リ
ン酸エステル類，有機スルホン酸塩，カルボン酸，カル
ボン酸塩などが使用できる。特に、有機スルホン酸塩と
しては中性あるいは塩基性のアルカリ金属またはアルカ
リ土類金属スルホネートが挙げられる。上記防錆剤は、
本発明の含油軸受油組成物中に0.０１〜５重量％程度添
加することができる。更に、腐食抑制剤としては、ベン
ゾトリアゾール系化合物，チアジアゾール系化合物等が
用いられ、その使用量は本発明の含油軸受油組成物中に
0.０１〜１重量％程度である。本発明の含油軸受油組成
物は、各種焼結金属材に含浸して焼結合金軸受として使
用する。このような焼結合金軸受は各種の軸受に使用す
ることができるが、例えばポータブルラジカセ，ポータ
ブルＣＤプレイヤー，ポータブルＭＤプレイヤー等のキ
ャプスタン軸受や自動車のラジエータのクーリングファ
ンモータなどのモーター軸受に適用することができる。Further, as the rust preventive agent, aliphatic amines, phosphoric acid esters, organic sulfonates, carboxylic acids, carboxylates and the like can be used. In particular, the organic sulfonates include neutral or basic alkali metal or alkaline earth metal sulfonates. The rust inhibitor is
The oil-containing bearing oil composition of the present invention can be added in an amount of about 0.01 to 5% by weight. Further, as the corrosion inhibitor, a benzotriazole-based compound, a thiadiazole-based compound, or the like is used, and the amount used is the same in the oil-containing bearing oil composition of the present invention.
It is about 0.01 to 1% by weight. The oil-impregnated bearing oil composition of the present invention is used as a sintered alloy bearing by impregnating various sintered metal materials. Such sintered alloy bearings can be used for various bearings, for example, capstan bearings for portable radio cassette players, portable CD players, portable MD players, and motor bearings for cooling fan motors for automobile radiators. be able to.
【００１３】[0013]
【実施例】次に、本発明を実施例によりさらに具体的に
説明するが、本発明は、これらの例によってなんら限定
されるものではない。なお、含油軸受油組成物の性能
は、以下に示す方法に従い評価した。 ＊１ 動粘度： ＪＩＳ Ｋ ２２８３に準じて評価し
た ＊２ 粘度指数：ＪＩＳ Ｋ ２２８３に準じて評価し
た ＊３ 流動点： ＪＩＳ Ｋ ２２６９に準じて評価し
た ＊４ 曇り点： ＪＩＳ Ｋ ２２６６に準じて評価し
た ＊５ 低温粘度（ブルックフィールド粘度）：（社）石
油学会 ＪＰＩ−５Ｓ−２６−８５に従い評価した ＊６ 潤滑油酸化安定度試験（ＩＳＯＴ）：ＪＩＳ Ｋ
２５１４に従い、下記条件にて粘度比，全酸価の増加
分（ｍｇＫＯＨ／ｇ）及び試験油のスラッジの有無を評
価した。 触媒 ：鉄及び銅、 温度 ：１６5.５℃、 回転数：１３００ｒｐｍ、 時間 ：７２時間EXAMPLES Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. The performance of the oil-containing bearing oil composition was evaluated according to the method described below. * 1 Kinematic viscosity: Evaluated according to JIS K 2283 * 2 Viscosity index: Evaluated according to JIS K 2283 * 3 Pour point: Evaluated according to JIS K 2269 * 4 Cloud point: According to JIS K 2266 Evaluated * 5 Low temperature viscosity (Brookfield viscosity): Evaluated according to JPI-5S-26-85 of Japan Petroleum Institute * 6 Lubricating oil oxidation stability test (ISOT): JIS K
According to 2514, the viscosity ratio, the increase in total acid value (mgKOH / g), and the presence or absence of sludge in the test oil were evaluated under the following conditions. Catalyst: iron and copper, temperature: 165.5 ° C, rotation speed: 1300 rpm, time: 72 hours
【００１４】＊７ 振り子試験：（社）自動車技術会
ＪＡＳＯ Ｍ３１４−８８に従い、下記条件にて摩擦
係数を測定した。 ボール ：ＳＵＪ２（３／１６インチ） ローラピン：ＳＵＪ２， 油温 ：２５℃ ＊８ シェル摩耗試験：（社）石油学会 ＪＰＩ−５
Ｓ−３２−９０に従い、下記条件にて摩耗痕の直径（ｍ
ｍ）を測定した。 回転数：１２００ｒｐｍ， 荷重 ：４０ｋｇｆ 油温 ：５０℃， 温度 ：６０分 ＊９ 軸受材浸漬試験：下記軸受材を８０℃で１００
時間、各試験油に浸漬し浸漬試験を行った後、軸受材の
腐食の有無及び試験油のスラッジ発生の有無を評価し
た。 * 7 Pendulum test: The friction coefficient was measured under the following conditions in accordance with JASO M314-88, Japan Automotive Engineering Society. Ball: SUJ2 (3/16 inch) Roller pin: SUJ2, Oil temperature: 25 ° C * 8 Shell abrasion test: JPI-5
According to S-32-90, the diameter of the wear mark (m
m) was measured. Rotational speed: 1200 rpm, load: 40 kgf Oil temperature: 50 ° C, temperature: 60 minutes * 9 Bearing material immersion test: 100% of the following bearing materials at 80 ° C
After immersion in each test oil for a time and an immersion test, the presence or absence of corrosion of the bearing material and the presence or absence of sludge generation of the test oil were evaluated.
【００１５】実施例１〜３及び比較例１〜５ 第１表に示す性状を有する基油を用いて、第２表に示す
配合割合（重量％）で含油軸受油組成物を調製し、その
各種性能を評価した。結果を第２表に示す。Examples 1 to 3 and Comparative Examples 1 to 5 Using a base oil having the properties shown in Table 1, oil-impregnated bearing oil compositions were prepared at the compounding ratio (% by weight) shown in Table 2, and Various performances were evaluated. The results are shown in Table 2.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【表２】 [Table 2]
【００１８】[0018]
【表３】 [Table 3]
【００１９】基油（１）：ポリオールエステル（トリメ
チロールプロパンと炭素数８〜１２混合脂肪酸とのエス
テル） 基油（２）：ポリオールエステル（ペンタエリスリトー
ルと炭素数８及び９混合脂肪酸とのエステル） 基油（３）：デセンオリゴマー 基油（４）：デセンオリゴマー 基油（５）：ジトリデシルアジペート 添加剤（１）：粘度指数向上剤（ポリメタアクリレー
ト、数平均分子量約７0,０００） 添加剤（２）：酸化防止剤（アルキル化ジフェニルアミ
ン） 添加剤（３）：腐食抑制剤（ベンゾトリアゾール） 添加剤（４）：防錆剤（カルシウムスルホネート）Base oil (1): Polyol ester (ester of trimethylolpropane and mixed fatty acid having 8 to 12 carbon atoms) Base oil (2): Polyol ester (ester of pentaerythritol and mixed fatty acid having 8 and 9 carbon atoms) Base oil (3): Decene oligomer Base oil (4): Decene oligomer Base oil (5): Ditridecyl adipate Additive (1): Viscosity index improver (polymethacrylate, number average molecular weight about 70,000) Additive (2): Antioxidant (alkylated diphenylamine) Additive (3): Corrosion inhibitor (benzotriazole) Additive (4): Anticorrosion agent (calcium sulfonate)
【００２０】[0020]
【発明の効果】本発明の含油軸受油組成物は、各種の焼
結金属材に含浸して焼結合金軸受として、その耐摩耗
性，低摩擦係数などの潤滑特性、高温安定性、酸化安定
性、低温粘度特性を向上させ、かつ軸受材適合性を向上
せしめることができる。The oil-impregnated bearing oil composition of the present invention is used as a sintered alloy bearing by impregnating it into various sintered metal materials to obtain its lubricating properties such as wear resistance and low friction coefficient, high temperature stability, and oxidation stability. Properties, low temperature viscosity characteristics, and bearing material compatibility can be improved.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ１０Ｍ 145:14） Ｃ１０Ｎ 30:02 30:06 30:08 30:10 40:02 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location C10M 145: 14) C10N 30:02 30:06 30:08 30:10 40:02
Claims (7)
ールエステルを含有する基油を含む含油軸受油組成物。1. An oil-containing bearing oil composition containing a base oil containing (a) a polyolefin and (b) a polyol ester.
ルエステルに対する割合が、重量比で２０／８０〜８０
／２０であることを特徴とする請求項１記載の含油軸受
油組成物。2. The weight ratio of (a) polyolefin to (b) polyol ester is 20/80 to 80.
The oil-containing bearing oil composition according to claim 1, which is / 20.
ンオリゴマ−又はエチレン−α−オレフィン共重合体で
あることを特徴とする請求項１又は２に記載の含油軸受
油組成物。3. The oil-impregnated bearing oil composition according to claim 1, wherein the polyolefin (a) is an α-olefin oligomer- or ethylene-α-olefin copolymer.
チルグリコール，トリメチロールプロパン，ペンタエリ
スリトール及びジペンタエリスリトールから選ばれる少
なくとも一種の多価アルコールとモノ脂肪酸とのエステ
ルであることを特徴とする請求項１〜３のいずれかに記
載の含油軸受油組成物。4. The (b) polyol ester is an ester of at least one polyhydric alcohol selected from neopentyl glycol, trimethylolpropane, pentaerythritol and dipentaerythritol with a monofatty acid. The oil-containing bearing oil composition according to any one of 1 to 3.
ことを特徴とする請求項１〜４のいずれかに記載の含油
軸受油組成物。5. The oil-impregnated bearing oil composition according to claim 1, wherein the base oil further contains a viscosity index improver.
であることを特徴とする請求項５記載の含油軸受油組成
物。6. The oil-impregnated bearing oil composition according to claim 5, wherein the viscosity index improver is polymethacrylate.
摩擦調整剤，酸化防止剤，界面活性剤，流動点降下剤，
防錆剤，腐食抑制剤及び消泡剤から選ばれる少なくとも
一種を含有することを特徴とする請求項１〜６のいずれ
かに記載の含油軸受油組成物。7. An oily agent, an ashless dispersant, a metallic detergent,
Friction modifier, antioxidant, surfactant, pour point depressant,
The oil-impregnated bearing oil composition according to any one of claims 1 to 6, which contains at least one selected from a rust preventive agent, a corrosion inhibitor, and an antifoaming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28270595A JP3925952B2 (en) | 1995-10-31 | 1995-10-31 | Oil-impregnated bearing oil composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28270595A JP3925952B2 (en) | 1995-10-31 | 1995-10-31 | Oil-impregnated bearing oil composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09125086A true JPH09125086A (en) | 1997-05-13 |
| JP3925952B2 JP3925952B2 (en) | 2007-06-06 |
Family
ID=17655985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28270595A Expired - Lifetime JP3925952B2 (en) | 1995-10-31 | 1995-10-31 | Oil-impregnated bearing oil composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3925952B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6750182B1 (en) | 1998-10-09 | 2004-06-15 | Exxonmobil Research And Engineering Company | Polar oil based industrial oils with enhanced sludge performance |
| WO2004072498A1 (en) * | 2003-02-14 | 2004-08-26 | Hitachi Powdered Metals Co., Ltd. | Oil impregnated sintered bearing |
| JP2004360731A (en) * | 2003-06-02 | 2004-12-24 | Komatsu Ltd | Sliding bearing, and work machine connecting device using the same |
| US6952324B2 (en) * | 2001-10-18 | 2005-10-04 | Seagate Technology, Llc | Hydrodynamic fluid bearing containing lubricants with reduced temperature sensitivity for disk drive application |
| WO2006123453A1 (en) * | 2005-05-20 | 2006-11-23 | Aisin Seiki Kabushiki Kaisha | Metal bearing |
| WO2007132626A1 (en) * | 2006-05-16 | 2007-11-22 | Nok Kluber Co., Ltd. | Lubricating oil composition |
| JP2008266376A (en) * | 2007-04-17 | 2008-11-06 | Nok Kluber Kk | Lubricant composition |
| JP2008266377A (en) * | 2007-04-17 | 2008-11-06 | Nok Kluber Kk | Lubricant composition |
| US7517838B2 (en) | 2002-08-22 | 2009-04-14 | New Japan Chemical Co., Ltd. | Lubricating oil for bearing |
| JP2009097640A (en) * | 2007-10-17 | 2009-05-07 | Mitsuba Corp | Sintered oil-retaining bearing and rotating electric machine |
| US8795112B2 (en) | 2007-09-13 | 2014-08-05 | Tsubakimoto Chain Co. | Lubricant and oil-free chain |
| EP4019613A1 (en) * | 2020-12-28 | 2022-06-29 | Nidec Corporation | Fluid bearing lubricating oil, fluid bearing, motor, and blower |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6750182B1 (en) | 1998-10-09 | 2004-06-15 | Exxonmobil Research And Engineering Company | Polar oil based industrial oils with enhanced sludge performance |
| US6952324B2 (en) * | 2001-10-18 | 2005-10-04 | Seagate Technology, Llc | Hydrodynamic fluid bearing containing lubricants with reduced temperature sensitivity for disk drive application |
| US7517838B2 (en) | 2002-08-22 | 2009-04-14 | New Japan Chemical Co., Ltd. | Lubricating oil for bearing |
| WO2004072498A1 (en) * | 2003-02-14 | 2004-08-26 | Hitachi Powdered Metals Co., Ltd. | Oil impregnated sintered bearing |
| CN100417825C (en) * | 2003-02-14 | 2008-09-10 | 日立粉末冶金株式会社 | Oil impregnated sintered bearing |
| JP2004360731A (en) * | 2003-06-02 | 2004-12-24 | Komatsu Ltd | Sliding bearing, and work machine connecting device using the same |
| JP4514416B2 (en) * | 2003-06-02 | 2010-07-28 | 株式会社小松製作所 | Slide bearing and work machine coupling device using the same |
| WO2006123453A1 (en) * | 2005-05-20 | 2006-11-23 | Aisin Seiki Kabushiki Kaisha | Metal bearing |
| US8188018B2 (en) | 2006-05-16 | 2012-05-29 | Nok Kluber Co., Ltd. | Lubricating oil composition |
| WO2007132626A1 (en) * | 2006-05-16 | 2007-11-22 | Nok Kluber Co., Ltd. | Lubricating oil composition |
| JP4946868B2 (en) * | 2006-05-16 | 2012-06-06 | Ｎｏｋクリューバー株式会社 | Lubricating oil composition |
| JP2008266377A (en) * | 2007-04-17 | 2008-11-06 | Nok Kluber Kk | Lubricant composition |
| JP2008266376A (en) * | 2007-04-17 | 2008-11-06 | Nok Kluber Kk | Lubricant composition |
| US8795112B2 (en) | 2007-09-13 | 2014-08-05 | Tsubakimoto Chain Co. | Lubricant and oil-free chain |
| JP2009097640A (en) * | 2007-10-17 | 2009-05-07 | Mitsuba Corp | Sintered oil-retaining bearing and rotating electric machine |
| EP4019613A1 (en) * | 2020-12-28 | 2022-06-29 | Nidec Corporation | Fluid bearing lubricating oil, fluid bearing, motor, and blower |
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