JP2001139975A - グリース組成物及びこれを用いた軸受装置 - Google Patents
グリース組成物及びこれを用いた軸受装置Info
- Publication number
- JP2001139975A JP2001139975A JP31953899A JP31953899A JP2001139975A JP 2001139975 A JP2001139975 A JP 2001139975A JP 31953899 A JP31953899 A JP 31953899A JP 31953899 A JP31953899 A JP 31953899A JP 2001139975 A JP2001139975 A JP 2001139975A
- Authority
- JP
- Japan
- Prior art keywords
- grease composition
- grease
- low
- properties
- rolling
- 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
Classifications
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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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
- C10M101/02—Petroleum fractions
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/06—Well-defined hydrocarbons aromatic
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/18—Ethers, e.g. epoxides
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- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/36—Esters of polycarboxylic acids
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- C10M105/38—Esters of polyhydroxy compounds
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
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- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6633—Grease properties or compositions, e.g. rheological properties
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- C10M2203/1025—Aliphatic fractions used as base material
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Abstract
性の性能バランスに優れており、給油期間の長期化を図
ることが可能でメンテナンスコストの低減を達成でき、
クリーンな環境下での使用に適した低発塵性グリース組
成物を提供する。また、このような低発塵性グリース組
成物が封入され、半導体製造装置、液晶製造装置、電子
計算機等のクリーンな環境下での使用に適した低発塵量
の軸受装置を提供する。 【解決手段】 鉱油及び/又は合成系潤滑基油に、
(A)増ちょう剤としてステアリン酸リチウム石けん
と、(B)酸化パラフィン及びジフェニルハイドロゲン
ホスファイトよりなる群から選ばれた1種又は2種以上
の化合物とがそれぞれ特定量含まれており、混和ちょう
度が270〜350の範囲である、グリース組成物であ
る。また、このようなグリース組成物が封入されたリニ
アガイド、ボールねじ、転がり軸受等の軸受装置であ
る。
Description
受部、摺動部、接合部等において潤滑性を付与するため
に用いられるグリース組成物に係り、特に半導体製造装
置、液晶製造装置、電子計算機等のクリーンな環境下で
の使用が要求される装置で使用され、低発塵性が要求さ
れるリニアガイド、ボールねじ、転がり軸受等の軸受装
置の軸受部や摺動部等で用いるのに適した低発塵性グリ
ース組成物及びこれを用いた軸受装置に関する。
算機等のクリーンな環境下での使用が要求される装置に
組み込まれたリニアガイド、ボールねじ、転がり軸受等
の軸受装置で用いるグリース組成物については、グリー
スが飛散してウエハ製品や記録媒体等に付着すると、製
品価値を喪失したり、あるいは、誤差動の原因になるた
め、低発塵性であることが極めて重要な性能である。
境下での使用が要求される軸受装置には、一般に、基油
としてパーフルオロポリエーテル(PFPE)を用い、
増ちょう剤としてポリテトラフルオロエチレン(PTF
E)を用いた、揮発性の極めて低い真空用フッ素系グリ
ースが使用されている。しかし、このフッ素系グリース
には、基油として高粘度PFPEを用いているので転が
り抵抗が高く、発熱やモータ過負荷の原因になり、ま
た、鉱油系や合成油系のグリースと比較して耐摩耗性に
も劣るという問題がある。
して、低発塵性に優れた幾つかのグリース組成物が提案
されている。例えば、所定の動粘度を有する鉱油、合成
炭化水素油、エーテル油、エステル油等の基油に、増ち
ょう剤としてC12〜C24の高級脂肪酸や高級ヒドロキシ
脂肪酸のリチウム塩等の金属石けん、ジウレア化合物等
のウレア化合物等を所定の割合で配合し、グリースを硬
くして低発塵性を発揮せしめると共に低転がり抵抗性に
も優れた種々のグリース組成物が提案されている(特開
平5-9489号、特開平8-143884号、特開平8-270747号、特
開平9-217745号等の各公報)。
置、電子計算機等で用いるリニアガイド、ボールねじ、
転がり軸受等の軸受装置のグリース組成物に要求される
性能については、低発塵性であることに加えて、軸受装
置の精密位置決めユニットに低速時の等速性や微小ステ
ップ送り時の高追従性が要求されることから、単に低転
がり抵抗性に優れているだけでなくその変動幅も小さい
という変動特性にも優れていることが要求され(以下、
低転がり抵抗性とその変動特性の両者を併せて「低転が
り性」ということがある)、更に、使用時の微動送り等
に起因して発生する微振動によりフレッチング摩耗が発
生することから、耐フレッチング性能に優れていること
が要求される。
グリースを硬くすると、耐フレッチング性が低下し、ま
た、グリース抵抗が高くなって低転がり性に悪影響を及
ぼし、反対に、耐フレッチング性や低転がり性を追求し
てグリースを柔らかくすると、所望の低発塵性を達成し
得なくなる。従来においては、このような低発塵性、低
転がり性、及び耐フレッチング性についてバランスの良
い優れた性能を発揮するグリース組成物は知られておら
ず、用途に応じていずれかの性能を犠牲にしているのが
実情である。
は、これら低発塵性、低転がり性、及び耐フレッチング
性についてバランスの良い優れた性能を発揮し得るグリ
ース組成物を開発すべく鋭意研究を重ねた結果、増ちょ
う剤としてステアリン酸リチウム石けんを使用し、グリ
ースの硬さを比較的柔らかな混和ちょう度(JIS K2220
5.3) 270〜350の範囲内に設定すると共に酸化パ
ラフィン及びジフェニルハイドロゲンホスファイトより
なる群から選ばれた1種又は2種以上の化合物をそれぞ
れ特定量用いることにより、低発塵性、低転がり性、及
び耐フレッチング性のいずれにおいてもバランス良く優
れた性能を発揮せしめることができ、これによって給油
期間の長期化を図ることができ、メンテナンスコストの
低減を達成できることを見出し、本発明を完成した。
がり性、及び耐フレッチング性の性能バランスに優れて
おり、給油期間の長期化を図ることが可能でメンテナン
スコストの低減を達成でき、クリーンな環境下での使用
に適した低発塵性グリース組成物を提供することにあ
る。また、本発明の目的は、このような低発塵性グリー
ス組成物が封入され、半導体製造装置、液晶製造装置、
電子計算機等のクリーンな環境下での使用に適した低発
塵量の軸受装置を提供することにある。
油系及び/又は合成系潤滑基油に、組成物全量を基準と
して、(A)増ちょう剤としてステアリン酸リチウム石
けん10〜35質量%と、(B)酸化パラフィン及びジ
フェニルハイドロゲンホスファイトよりなる群から選ば
れた1種又は2種以上の化合物0.5〜15.0質量%
とが含まれており、混和ちょう度が270〜350であ
ることを特徴とするグリース組成物である。また、本発
明は、このようなグリース組成物が封入されていること
を特徴とする軸受装置である。
明に用いる潤滑基油としては、鉱油及び/又は合成油が
挙げられる。この潤滑基油の100℃の動粘度は、その
下限値が通常2mm2 /sec.、好ましくは3mm2 /se
c.であって、その上限値が通常40mm2 /sec.、好ま
しくは30mm2 /sec.である。また、この潤滑基油の
粘度指数は、通常、90以上、好ましくは95以上であ
る。
で通常行われている方法により得られるものであり、原
油を常圧蒸留又は減圧蒸留して得られた潤滑油留分に、
溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触
脱ろう、水素化精製、硫酸洗浄、白土処理等の処理のい
ずれか1つ以上の処理を施して精製したものが挙げられ
る。
オクテンオリゴマー、1-デセンオリゴマー等のポリα−
オレフィン又はこれらの水素化物や、ジトリデシルグル
タレート、ジ2-エチルヘキシルアジペート、ジイソデシ
ルアジペート、ジトリデシルアジペート、ジ3-エチルヘ
キシルセパケート等のジエステル類や、トリメチロール
プロパンカプリレート、トリメチロールプロパンペラル
ゴネート、ペンタエリスリトール2-エチルヘキサノエー
ト、ペンタエリスリトールペラルゴネート等のポリオー
ルエステル類や、アルキルナフタレン、アルキルベンゼ
ン、ポリオキシアルキレングリコール、ポリフエニルエ
ーテル、ジアルキルジフェニルエーテル、シリコーン
油、又はこれらの混合物等が挙げられる。本発明の潤滑
基油としては、上記鉱油及び/又は合成油の1種のみを
単独で使用できるほか、2種以上を混合して使用するこ
ともできる。
るステアリン酸リチウム石けんは、ステアリン酸のリチ
ウム塩又はステアリン酸を主成分とする混合脂肪酸のリ
チウム塩を意味する。これらのリチウム塩は、一般に、
ステアリン酸又はステアリン酸を主成分とする混合脂肪
酸と水酸化リチウムとの反応によって得ることができ
る。また、ステアリン酸を主成分とする混合脂肪酸は、
天然油脂を加水分解して得ることができ、例えば、牛脂
から得られる直分脂肪酸や硬分脂肪酸は、ステアリン酸
リチウム石けんの好ましい原料である。
解して得られる混合脂肪酸を意味し、このものは一般に
オレイン酸を30〜60質量%の範囲で、また、ステア
リン酸を20〜60質量%の範囲で含有するほか、ラウ
リン酸、ミリスチン酸、パルミチン酸及びその他の不飽
和脂肪酸を少量含有する。また、上記硬分脂肪酸とは、
牛脂を水素添加して得られる硬化油を分解するか、ある
いは、上記の直分脂肪酸を水素添加することによって得
られる混合脂肪酸を意味し、このものは一般に60質量
%以上のステアリン酸を含有し、その他にラウリン酸、
ミリスチン酸、パルミチン酸等の飽和脂肪酸を少量含有
する。
ス組成物全量を基準にして、その下限値が10質量%、
好ましくは15質量%であって、その上限値が35質量
%、好ましくは27質量%である。A成分の含有割合が
10質量%より少ないと、グリースが軟らかくなりすぎ
て低発塵性が低下し、反対に、35質量%より多くなる
と、グリースが硬くなりすぎて耐フレッチング性や低転
がり性が悪くなってしまう。
フィン及びジフェニルハイドロゲンホスファイトよりな
る群から選ばれた1種又は2種以上の化合物を用いる。
ここで、酸化パラフィンとしては、パラフィンワック
ス、マイクロクリスタリンワックス等の石油系ワックス
や、ポリエチレンワックス等の合成ワックス等を酸化し
て得られたものが用いられる。なお、本発明で使用する
酸化パラフィンの性状は任意であるが、耐フレッチング
性の点から、融点についてはその下限値が25℃、好ま
しくは30℃であって、その上限値が110℃、好まし
くは70℃であり、また、全酸価についてはその下限値
が0.2mmgKOH/g 、好ましくは1mmgKOH/g であっ
て、その下限値が165mmgKOH/g 、好ましくは40mm
gKOH/g であるものを用いるのが好ましい。
トは、下記式(1)で表される化合物である。
ス組成物全量を基準にして、その下限値が0.5質量
%、好ましくは1.0質量%であって。その上限値が1
5質量%、好ましくは10質量%である。B成分の含有
割合が0.5質量%より少ないと、グリースの耐フレッ
チング性が十分ではなく、一方、15質量%より多くし
ても、添加量に見合うだけの耐フレッチング性が発揮さ
れない。
は、その下限値が270、好ましくは290であって、
その上限値が350、好ましくは330である。この混
和ちょう度が270より低いと、グリースが硬くなり、
耐フレッチング性について所望の性能を発揮し得なくな
るほか、グリース抵抗が増して充分な低転がり性を発揮
し得なくなり、また、350より高くなると、グリース
が軟らかくなりすぎ、所望の低発塵性を達成し得なくな
る。なお、本発明にいう混和ちょう度とは、JIS K
2220−1993「グリース」の「5.3.3 混和
ちょう度試験法」に準拠して測定される値を意味する。
発塵性を満たすものであることが望ましい。すなわち、
リニアガイド〔テイエチケー(株)製SR20W1+280LP〕に
グリース1cm3 を封入し、アクリルケース内で送り速
度30m/分及びストローク200mmで15時間走行
させたときの発塵量を空気供給量500cm3 /分及び
測定粒子径0.3μm以上のパーティクルカウンタ(RI
ON社製KC-01D)で測定する方法で発塵試験を行い、その
時の値が500個/2分・リットル以下、好ましくは3
00個/2分・リットル以下、より好ましくは200個
/2分・リットル以下であるのが望ましい。
示す低転がり性を満たすものであることが望ましい。す
なわち、リニアガイド〔テイエチケー(株)製HSR35RC0
+440LP〕にグリース4cm3 (初期封入のみ)を封入
し、送り速度1mm/秒及びストローク3mmで60分
間の条件で微小ストローク転がり抵抗試験を行い、その
時の転がり抵抗値変動幅が10.0N以下、好ましくは
5.0N以下であり、また、リニアガイド〔テイエチケ
ー(株)製HSR25A1C1+580LP 〕にグリース3cm 3 (初
期封入のみ)を封入し、送り速度10mm/秒及びスト
ローク200mmでグリース抵抗試験を行い、グリース
封入前後での転がり抵抗値の差が5.0N以下、好まし
くは2.0N以下であるのが望ましい。
示す耐フレッチング性を満たすものであることが望まし
い。すなわち、リニアガイド〔テイエチケー(株)製HS
R35R2UUCS+440LP-II〕にグリース4cm3 (初期封入の
み)を封入し、振動数200opm (3.33Hz )、荷
重9.8kN及びストローク3mmで10時間のフレッ
チング試験を行い、軌道レールのボール転走面における
酸化摩耗粉発生状況を観察すると共にこのボール転走面
の摩耗量を表面粗さ測定機で測定し、酸化摩耗粉の発生
が少なくて摩耗量が5μm以下、好ましくは4μm以
下、より好ましくは3μm以下であるのが望ましい。
は、上述した低発塵性、低転がり性、及び耐フレッチン
グ性のバランスに優れているものであることがより好ま
しく、ここにいう性能バランスに優れているとは、上述
した望ましい低発塵性、低転がり性、及び耐フレッチン
グ性の全てを兼ね備えていることを意味する。
性質が損なわれない限り、更に性能を向上させるために
必要に応じて、極圧剤、酸化防止剤、油性剤、錆止め
剤、粘度指数向上剤等を添加することができる。ここ
で、極圧剤としては、例えば、ジアルキルジチオリン酸
亜鉛、ジアリールジチオリン酸亜鉛、ジアルキルジチオ
カルバミン酸亜鉛等の有機亜鉛化合物や、ジアルキルジ
チオリン酸モリブデン、ジアリールジチオリン酸モリブ
デン、ジアルキルジチオカルバミン酸モリブデン等の有
機モリブデン化合物や、チオカルバミル化合物や、ホス
フェート、ホスファイト類等が挙げられる。
ジ−t-ブチルフェノール、2,6-ジ−t-ブチル−p-クレゾ
ール等のフェノール系化合物や、ジアルキルジフェニル
アミン、フェニル−α−ナフチルアミン、p-アルキルフ
ェニル−α−ナフチルアミン等のアミン系化合物や、硫
黄系化合物や、フェノチアジン系化合物等が挙げられ
る。
アミン、ミリスチルアミン、パルミチルアミン、ステア
リルアミン、オレイルアミン等のアミン類や、ラウリル
アルコール、ミリスチルアルコール、パルミチルアルコ
ール、ステアリルアルコール、オレイルアルコール等の
高級アルコール類や、ラウリン酸、ミリスチン酸、パル
ミチン酸、ステアリン酸、オレイン酸等の高級脂肪酸類
や、ラウリン酸メチル、ミリスチン酸メチル、パルミチ
ン酸メチル、ステアリン酸メチル、オレイン酸メチル等
の脂肪酸エステル類や、ラウリルアミド、ミリスチルア
ミド、パルミチルアミド、ステアリルアミド、オレイル
アミド等のアミド類や、油脂類等が挙げられる。
属石けん類や、ソルビタン脂肪酸エステル等の多価アル
コール部分エステル類や、アミン類、リン酸、リン酸塩
等が挙げられる。また、粘度指数向上剤としては、例え
ば、ポリメタクリレート、ポリイソブチレン、ポリスチ
レン等が挙げられる。
物を封入した各種の軸受装置として提供される。この軸
受装置としては、具体的には、半導体製造装置、液晶製
造装置、電子計算機等に組み込まれるリニアガイド、ボ
ールねじ、転がり軸受等が挙げられる。これら軸受装置
に本発明のグリース組成物を封入する方法及び手段につ
いては、特に制限されるものではなく、従来と同様の方
法で行なうことができる。
線摺動用ボールベアリングを例にして説明すると、以下
の通りである。すなわち、直線摺動用ボールベアリング
は、図1に示すように、軌道レール1と、この軌道レー
ル1に沿って摺動する摺動台2と、これら軌道レール1
と摺動台2との間で荷重を負荷しながら転走するボール
3とで構成されており、軌道レール1にはボール転走面
4が形成され、摺動台2には軌道レール1のボール転走
面4と相俟ってボール3の負荷ボール転走路6を形成す
る負荷ボール転走面5が形成されると共にこの負荷ボー
ル転走路6の一端から他端へボール3を循環せしめる無
負荷ボール転走路7が形成され、また、基端側が摺動台
2側に取り付けられて先端側が軌道レール1に摺接する
シール部材8により上記軌道レール1と摺動台2との間
に形成される隙間を密閉空間9とし、更に、摺動台2側
には上記密閉空間9に通じるグリースニップル10が設け
られている。
へのグリースの封入は、例えばグリースをグリースガン
に装填し、直線摺動用ボールベアリングのグリースニッ
プル10から軌道レール1と摺動台2との間に形成される
密閉空間9内に充填することにより行なわれる。
軸受装置においては、鉱油系及び/又は合成系潤滑基油
に、(A)増ちょう剤としてステアリン酸リチウム石け
んと(B)酸化パラフィン及びジフェニルハイドロゲン
ホスファイトよりなる群から選ばれた1種又は2種以上
の化合物をそれぞれ特定量添加し、混和ちょう度を27
0〜350の範囲内に設定することにより、低発塵性、
低転がり性、及び耐フレッチング性のいずれにおいても
バランス良く優れた性能を発揮せしめることができる。
て、本発明の好適な実施の形態を具体的に説明する。な
お、以下の実施例及び比較例において、潤滑基油として
は、以下に示す3 種類のものを用いた。
キル基を示し、3つのRのうち1つは水素原子であって
残りの2つはアルキル基であり、2つのアルキル基は互
いに同じであっても異なっていてもよい)で表され、か
つ、100℃における動粘度が12mm2 /sec.である
ジアルキルジフェニルエーテル(DADPE)
/sec.であり、粘度指数が98の鉱油 下記式(3)
センオリゴマー水素化物の混合物(PAO)
の潤滑基油にステアリン酸を加えて加熱溶解させ、次い
で水酸化リチウムを水に加熱溶解させて得られた溶液を
添加し、加熱攪拌しながら水分を蒸発させた。更に、反
応生成物が溶解するまで加熱昇温させた後、同基油を加
えるとゲル状物質が生じるので、攪拌しながら冷却し、
表1に示すB成分(融点40℃及び全酸価30mgKOH/g
の酸化パラフィン、又はジフェニルハイドロゲンホスフ
ァイト)、及びアミン系酸化防止剤を添加した後、これ
らをロールミルに通して実施例1〜5及び比較例2〜3
のグリース組成物を得た。
キシステアリン酸を用いた以外は上記と同様にして、比
較例1のグリース組成物を得た。更に、ジフェニルメタ
ン-4,4'-ジイソシアネートを潤滑基油に添加し加熱溶解
させ、シクロヘキシルアミンを潤滑基油に加熱溶解させ
たものを加えるとゲル状物質が生成するので、表1に示
すB成分、及び酸化防止剤を添加した後、これらをロー
ルミルに通して比較例4〜6のグリース組成物を得た。
及び比較例1〜6のグリース組成物について、その25
℃、60Wの混和ちょう度(JIS K2220 5.3) を測定する
と共に、先に説明したようなリニアガイドを用いた試験
方法(発塵試験、微小ストローク転がり抵抗試験、グリ
ース抵抗試験、及びフレッチング試験)に従って、その
低発塵性、低転がり性、及び耐フレッチング性を調べ
た。
表1に示す。また、実施例3及び比較例1、2、5及び
6についての発塵試験の結果と、実施例3及び比較例
1、2及び5についての微小ストローク転がり抵抗試
験、及びグリース抵抗試験の結果とをそれぞれ図2〜図
4に示す。
なように、各実施例の低発塵性グリース組成物は、その
低発塵性、低転がり性、及び耐フレッチング性におい
て、バランス良く優れた性能を発揮することが判明し
た。
発塵性、低転がり性、及び耐フレッチング性の性能バラ
ンスに優れており、給油期間の長期化を図ることが可能
でメンテナンスコストの低減を達成でき、クリーンな環
境下での使用に適している。このため、本発明の低発塵
性グリース組成物が封入されたリニアガイド、ボールね
じ、転がり軸受等の軸受装置は、半導体製造装置、液晶
製造装置、電子計算機等のクリーンな環境下での使用に
適している。
封入される軸受装置の一例を示す直線摺動用ボールベア
リングの断面図である。
6のグリース組成物における発塵試験の結果を示すグラ
フ図である。
のグリース組成物における微小ストローク転がり抵抗試
験の結果を示すグラフ図である。
のグリース組成物におけるグリース抵抗試験の結果を示
すグラフ図である。
Claims (2)
- 【請求項1】 鉱油系及び/又は合成系潤滑基油に、組
成物全量を基準として、(A)増ちょう剤としてステア
リン酸リチウム石けん10〜35質量%と、(B)酸化
パラフィン及びジフェニルハイドロゲンホスファイトよ
りなる群から選ばれた1種又は2種以上の化合物0.5
〜15.0質量%とが含まれており、混和ちょう度が2
70〜350であることを特徴とするグリース組成物。 - 【請求項2】 請求項1に記載のグリース組成物が封入
されていることを特徴とする軸受装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31953899A JP4554744B2 (ja) | 1999-11-10 | 1999-11-10 | グリース組成物及びこれを用いた軸受装置 |
US09/708,051 US6339049B1 (en) | 1999-11-10 | 2000-11-08 | Grease compositions and bearings sealed therewith |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31953899A JP4554744B2 (ja) | 1999-11-10 | 1999-11-10 | グリース組成物及びこれを用いた軸受装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001139975A true JP2001139975A (ja) | 2001-05-22 |
JP4554744B2 JP4554744B2 (ja) | 2010-09-29 |
Family
ID=18111374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31953899A Expired - Lifetime JP4554744B2 (ja) | 1999-11-10 | 1999-11-10 | グリース組成物及びこれを用いた軸受装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US6339049B1 (ja) |
JP (1) | JP4554744B2 (ja) |
Cited By (7)
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JP2004036814A (ja) * | 2002-07-05 | 2004-02-05 | Nsk Ltd | 潤滑剤供給体及び前記潤滑剤供給体を備える直動装置 |
JP2005308053A (ja) * | 2004-04-20 | 2005-11-04 | Thk Co Ltd | 低速案内装置及びその潤滑方法。 |
WO2009125775A1 (ja) * | 2008-04-11 | 2009-10-15 | 出光興産株式会社 | グリース組成物およびそのグリース組成物を用いた直動装置 |
US7691294B2 (en) | 2005-03-04 | 2010-04-06 | Inktec Co., Ltd. | Conductive inks and manufacturing method thereof |
JP2013018941A (ja) * | 2011-07-14 | 2013-01-31 | Nsk Ltd | 潤滑剤組成物及び転がり軸受 |
KR101362806B1 (ko) | 2013-09-12 | 2014-02-13 | 신광선 | 컨넥터 부식방지용 테이프 및 그 제조방법 |
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JP2003013972A (ja) * | 2001-06-27 | 2003-01-15 | Minebea Co Ltd | 高速回転軸受 |
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WO2004018594A1 (ja) | 2002-08-21 | 2004-03-04 | Citizen Watch Co., Ltd. | 精密機器用グリース組成物およびこれを用いた時計 |
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JP2004036814A (ja) * | 2002-07-05 | 2004-02-05 | Nsk Ltd | 潤滑剤供給体及び前記潤滑剤供給体を備える直動装置 |
JP2005308053A (ja) * | 2004-04-20 | 2005-11-04 | Thk Co Ltd | 低速案内装置及びその潤滑方法。 |
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WO2009125775A1 (ja) * | 2008-04-11 | 2009-10-15 | 出光興産株式会社 | グリース組成物およびそのグリース組成物を用いた直動装置 |
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TWI481704B (zh) * | 2008-04-11 | 2015-04-21 | Idemitsu Kosan Co | Grease composition and a linear mobile device using the grease composition |
JP2013018941A (ja) * | 2011-07-14 | 2013-01-31 | Nsk Ltd | 潤滑剤組成物及び転がり軸受 |
EP3042945A4 (en) * | 2013-09-02 | 2017-04-26 | Nippon Steel & Sumitomo Metal Corporation | Composition for forming lubricating coating film, and threaded joint for steel pipe |
US9725671B2 (en) | 2013-09-02 | 2017-08-08 | Nippon Steel & Sumitomo Metal Corporation | Lubricant film-forming composition and screw joint for steel pipe |
KR101362806B1 (ko) | 2013-09-12 | 2014-02-13 | 신광선 | 컨넥터 부식방지용 테이프 및 그 제조방법 |
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