JPH05240251A - Sintered oil retaining bearing - Google Patents
Sintered oil retaining bearingInfo
- Publication number
- JPH05240251A JPH05240251A JP4340192A JP4340192A JPH05240251A JP H05240251 A JPH05240251 A JP H05240251A JP 4340192 A JP4340192 A JP 4340192A JP 4340192 A JP4340192 A JP 4340192A JP H05240251 A JPH05240251 A JP H05240251A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- oil
- low
- molding
- sintered
- 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.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 24
- 239000010702 perfluoropolyether Substances 0.000 claims abstract description 14
- 230000001050 lubricating effect Effects 0.000 abstract description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000748 compression moulding Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000009477 glass transition Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 3
- 208000007542 Paresis Diseases 0.000 abstract 1
- 238000005452 bending Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 208000012318 pareses Diseases 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 description 10
- 238000005461 lubrication Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010696 ester oil Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- OFWDLJKVZZRPOX-UHFFFAOYSA-N 2,2,3,3-tetrafluorooxetane Chemical group FC1(F)COC1(F)F OFWDLJKVZZRPOX-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 229940055577 oleyl alcohol Drugs 0.000 description 1
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 perfluoro Chemical group 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010689 synthetic lubricating oil Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、焼結した軸受成形品
に潤滑油を含浸した焼結含油軸受に関し、更に詳しく
は、低圧力条件下で用いられる焼結含油軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sintered oil-impregnated bearing obtained by impregnating a sintered bearing molded product with lubricating oil, and more particularly to a sintered oil-impregnated bearing used under low pressure conditions.
【０００２】[0002]
【従来の技術】一般に、焼結含油軸受は、焼結した軸受
成形品の気孔中に潤滑油を含浸保持させ、その使用時に
潤滑油を摺動面に滲出させることによって、長時間安定
した滑り摩擦特性を得るようにしたものである。2. Description of the Related Art In general, a sintered oil-impregnated bearing has a structure in which the lubricating oil is impregnated and held in the pores of a sintered bearing molded product, and the lubricating oil is exuded to the sliding surface during its use to ensure stable sliding for a long time. It is intended to obtain friction characteristics.
【０００３】このような焼結軸受の成形品は、通常、
鉄、銅、亜鉛、錫、黒鉛、ニッケル、鉛等もしくはこれ
らを組み合わせた合金製の微粉粒を、混合、圧縮成形、
焼成、サイジング等の処理を施して得られ、このもの
は、均一な多孔質組織を有する。Molded products of such sintered bearings are usually
Fine powder particles made of iron, copper, zinc, tin, graphite, nickel, lead, etc. or alloys combining these are mixed, compression molded,
It is obtained by subjecting it to treatments such as firing and sizing, and it has a uniform porous structure.
【０００４】一方、焼結した軸受成形品に含浸する潤滑
油としては、鉱油またはジエステル油等の合成潤滑油が
用いられていた。On the other hand, a synthetic lubricating oil such as mineral oil or diester oil has been used as the lubricating oil impregnated into the sintered bearing molded product.
【０００５】ところが、上記した焼結含油軸受は、低真
空（大気圧〜１０2 Ｐａ）または中真空（１０2 〜１０
-1Ｐａ）の条件下で用いると、潤滑油が、蒸発してトル
クの上昇を招いたりする。したがって、低圧力使用条件
に係る航空機用機器や人工衛生用機器等に用いる軸受
は、その摺動面を四フッ化エチレン樹脂、ポリイミド等
の自己潤滑性高分子材料で成形もしくは被覆するか、ま
たは、金、銀もしくは二硫化モリブデン等の固体潤滑剤
を被覆して潤滑性を高めていた。However, the sintered oil-impregnated bearing described above has a low vacuum (atmospheric pressure of 10 2 Pa) or a medium vacuum (10 2 to 10 Pa).
If it is used under the condition of ( -1 Pa), the lubricating oil may evaporate and the torque may increase. Therefore, bearings used in aircraft equipment and artificial hygiene equipment, etc., which are subject to low pressure use conditions, have their sliding surfaces molded or coated with a self-lubricating polymer material such as tetrafluoroethylene resin or polyimide, or A solid lubricant such as gold, silver or molybdenum disulfide was coated to improve lubricity.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記した自己
潤滑性の高分子材料または固体潤滑剤を用いた軸受は、
その潤滑特性が固体表面の形状に対応して変化し易く、
また潤滑膜の耐久性の面でも流体潤滑の軸受に比べてそ
の寿命が劣るという問題点がある。However, a bearing using the above-mentioned self-lubricating polymer material or solid lubricant is
Its lubrication characteristics easily change according to the shape of the solid surface,
Also, in terms of durability of the lubricating film, there is a problem that the life of the lubricating film is inferior to that of the fluid lubricated bearing.
【０００７】そこで、この考案は、上記した問題点を解
決し、低圧力の条件下で使用される軸受を、その摺動面
が油膜により完全に分離される流体潤滑によって潤滑し
得るものとして、このような条件下での軸受の潤滑特性
の安定化を図ると共に軸受寿命の長期化を図ることを課
題としている。In view of the above, the present invention solves the above-mentioned problems and allows a bearing used under a low pressure condition to be lubricated by fluid lubrication in which its sliding surface is completely separated by an oil film. It is an object to stabilize the lubrication characteristics of the bearing under such conditions and to extend the life of the bearing.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
め、この発明においては、焼結した軸受成形品に、パー
フルオロポリエーテル油を含浸した構成を採用したので
ある。In order to solve the above problems, the present invention employs a structure in which a sintered bearing molded article is impregnated with perfluoropolyether oil.
【０００９】[0009]
【作用】この発明に係る焼結含油軸受は、焼結した軸受
成形体に、従来使用の鉱油、種々のエステル油、ポリα
オレフィン油等に比べて著しく蒸気圧の低いパーフルオ
ロポリエーテル油を含浸したものであるから、例えば１
×１０5 〜１×１０-1Ｐａといった大気圧以下の低圧条
件下で使用しても、摺動面に滲出した潤滑油が殆ど蒸発
することなく、長期間安定した潤滑特性を発揮する。The sintered oil-impregnated bearing according to the present invention can be obtained by adding mineral oil, various ester oils, poly-α, and the like, which have been conventionally used, to a sintered bearing compact.
Since it is impregnated with perfluoropolyether oil whose vapor pressure is significantly lower than that of olefin oil,
Even when used under low pressure conditions such as × 10 5 to 1 × 10 -1 Pa below atmospheric pressure, the lubricating oil exuded on the sliding surface hardly evaporates, and exhibits stable lubricating characteristics for a long period of time.
【００１０】[0010]
【実施例】この発明に用いる焼結した軸受成形品は、特
にその材料を限定するものでなく、従来の場合と同様
に、所要の金属材料を圧縮成形工程、焼成工程及び圧縮
成形（サイジング）工程を順次経て成形したものであっ
てよく、通常５０μｍ以下の細孔（大多数の孔径は１０
μｍ以下）が均等に分布する。EXAMPLE The sintered bearing molded product used in the present invention is not particularly limited in its material, and a desired metal material is subjected to a compression molding step, a firing step and a compression molding (sizing) as in the conventional case. It may be one that is formed through successive steps, and usually has pores of 50 μm or less (the majority of pores have a diameter of 10
(μm or less) is evenly distributed.
【００１１】また、軸受成形品の形状も、特に限定され
るものではなく、平面軸受・スラスト軸受・ジャーナル
軸受等、軸と軸受とが機構学的に面接触していて、軸受
の回転に伴って滑りを生ずる軸受であればいずれでも良
い。なお、ここでいう軸受は、主として滑り軸受をいう
が、ころがり軸受の保持器に多孔質焼結剤を用いる場合
には、上記の滑り軸受と同様の処理を施したものを用い
ても良い。Also, the shape of the bearing molded product is not particularly limited, and the shaft and the bearing such as a flat bearing, a thrust bearing, and a journal bearing are mechanically in surface contact with each other, and the bearing is rotated. Any bearing may be used as long as it causes slippage. The bearing here mainly refers to a sliding bearing, but when a porous sintering agent is used for the cage of the rolling bearing, a bearing subjected to the same treatment as the above sliding bearing may be used.
【００１２】また、この発明に用いるパーフルオロポリ
エーテル油は、主鎖に−ＣＦ2 −Ｏ−ＣＦ2 −のエーテ
ル結合を有する完全フッ素化油であって、たとえば次に
〔化１〕で示すような構造のものであってよい。Further, the perfluoropolyether oil used in the present invention is a completely fluorinated oil having an ether bond of --CF 2 --O--CF 2 --in its main chain, and is shown by the following [Chemical formula 1]. It may be of such a structure.
【００１３】[0013]
【化１】 [Chemical 1]
【００１４】上記のパーフルオロポリエーテルは、２，
２，３，３，−テトラフルオロオキセタンをフッ素イオ
ン触媒で開環重合し、得られたオリゴマーをフッ素ガス
で直接フッ素化してパーフルオロ体に変換したのち、末
端を安定化してパーフルオロトリメチレンオキサイドの
繰り返し単位を有するポリエーテルとしたものである。The above-mentioned perfluoropolyether is 2,
2,3,3-Tetrafluorooxetane was subjected to ring-opening polymerization with a fluorine ion catalyst, and the resulting oligomer was directly fluorinated with fluorine gas to be converted into a perfluoro body. It is a polyether having a repeating unit of.
【００１５】このようなパーフルオロポリエーテル油
は、主鎖中にエーテル結合を多数有しており、分子屈曲
性が大きいため、低圧条件下で以下に示すような優れた
潤滑特性を示す。すなわち、ガラス転移温度が低く、従
って液体温度範囲（凝固点〜沸点）が極めて広い。一
方、化学的にはフッ素の持つ電気吸引効果のために本来
のエーテル性を示さず、耐熱性、耐薬品性、耐酸化性に
優れたものとなる。粘度指数は１５０〜２１０で鉱物油
等に比べ相当優れており、分子量が大きくかつ流動点が
低いため、低温から高温まで非常に低い蒸気圧を示す。
また潤滑特性も良好で、一般的な潤滑油と比べても摩擦
係数が低く、耐荷重性が高いなどの特性がある。Since such a perfluoropolyether oil has a large number of ether bonds in the main chain and has a large molecular flexibility, it exhibits the following excellent lubricating characteristics under low pressure conditions. That is, the glass transition temperature is low, and therefore the liquid temperature range (freezing point to boiling point) is extremely wide. On the other hand, chemically, due to the electric attraction effect of fluorine, it does not show the original ether property, and has excellent heat resistance, chemical resistance, and oxidation resistance. The viscosity index is 150 to 210, which is considerably superior to that of mineral oil and the like, and because of its large molecular weight and low pour point, it exhibits a very low vapor pressure from low temperature to high temperature.
In addition, it has good lubrication characteristics, such as a low coefficient of friction and high load resistance compared to general lubricating oils.
【００１６】パーフルオロポリエーテル油を焼結軸受成
形品に含浸するには、これを単独で軸受成形品に含浸す
ることがこの発明の所期の目的を達成する上で好ましい
が、実用性または経済的観点から、他の潤滑油と配合し
た混成油を含浸することもできる。この場合、パーフル
オロポリエーテル油に配合する他の潤滑油としては、ジ
エステル油、ポリオールエステル油又はポリαオレフィ
ン油等が挙げられる。In order to impregnate a sintered bearing molded product with the perfluoropolyether oil, it is preferable to impregnate this with the bearing molded product alone in order to achieve the intended object of the present invention. From an economical point of view, it is also possible to impregnate a mixed oil blended with another lubricating oil. In this case, examples of the other lubricating oil blended with the perfluoropolyether oil include diester oil, polyol ester oil, poly α-olefin oil and the like.
【００１７】なお、この発明の効果を害しない範囲にお
いて、パーフルオロポリエーテル油または他の潤滑油と
の混成油に対し、ヒンダードフェノール、芳香族アミン
などの酸化防止剤、ポリアルキルメタクリレート、スチ
レン−ジエン共重合体水素化物などの粘度指数向上剤ま
たは高級脂肪酸（オレイン酸、ステアリン酸など）、高
級アルコール（オレイルアルコールなど）その他の油性
向上剤を添加してもよいのはもちろんである。In addition, as long as the effect of the present invention is not impaired, antioxidants such as hindered phenols and aromatic amines, polyalkylmethacrylates, and styrene can be added to perfluoropolyether oils or mixed oils with other lubricating oils. Needless to say, a viscosity index improver such as a hydride of a diene copolymer, a higher fatty acid (oleic acid, stearic acid, etc.), a higher alcohol (oleyl alcohol, etc.) or another oiliness improver may be added.
【００１８】〔実験例〕パーフルオロポリエーテル油
（モンテフロス社製フォンブリンＺ）に、細孔径１〜１
０μｍの焼結銅合金製ブッシュ状滑り軸受成形体を浸漬
し、減圧条件下で軸受成形体の連通気孔内にパーフルオ
ロポリエーテル油を含浸させた。次いで軸受成形体の表
面に付着した余剰の油を清浄な布で取り除いて焼結含油
軸受を得た。[Experimental Example] Perfluoropolyether oil (Fomblin Z manufactured by Montefloss) was used, and the pore size was 1 to 1.
A 0 μm sintered copper alloy bush-shaped sliding bearing compact was immersed, and perfluoropolyether oil was impregnated into the communicating holes of the bearing compact under reduced pressure. Then, excess oil adhering to the surface of the molded bearing was removed with a clean cloth to obtain a sintered oil-impregnated bearing.
【００１９】得られた軸受を装着した家電用モータを中
真空の雰囲気下で使用したが、蒸発による減量は非常に
少なく、安定した摩擦特性で長寿命であった。A home electric motor equipped with the obtained bearing was used in an atmosphere of medium vacuum, but the amount of loss due to evaporation was very small, stable friction characteristics and long life were obtained.
【００２０】[0020]
【効果】この発明は、以上説明したように、蒸気圧の非
常に小さいパーフルオロポリエーテル油を含浸した焼結
含油軸受としたので、低圧の条件下でも摺動面が油膜に
より完全に分離される流体潤滑によって安定して潤滑で
き、真空モータ等に用いられる焼結含油軸受を安定して
優れた潤滑特性のあるものとして長期寿命化を達成でき
る利点がある。As described above, according to the present invention, since the sintered oil-impregnated bearing is impregnated with perfluoropolyether oil having a very low vapor pressure, the sliding surface is completely separated by the oil film even under a low pressure condition. There is an advantage that stable lubrication can be achieved by fluid lubrication, and that a sintered oil-impregnated bearing used in a vacuum motor or the like can be stably provided with excellent lubrication characteristics and a long life can be achieved.
Claims (1)
リエーテル油を含浸してなる焼結含油軸受。1. A sintered oil-impregnated bearing obtained by impregnating a sintered bearing molded product with perfluoropolyether oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4340192A JPH05240251A (en) | 1992-02-28 | 1992-02-28 | Sintered oil retaining bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4340192A JPH05240251A (en) | 1992-02-28 | 1992-02-28 | Sintered oil retaining bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05240251A true JPH05240251A (en) | 1993-09-17 |
Family
ID=12662754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4340192A Pending JPH05240251A (en) | 1992-02-28 | 1992-02-28 | Sintered oil retaining bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05240251A (en) |
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| JPH09125086A (en) * | 1995-10-31 | 1997-05-13 | Idemitsu Kosan Co Ltd | Oil-impregnated bearing oil composition |
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-
1992
- 1992-02-28 JP JP4340192A patent/JPH05240251A/en active Pending
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