JP2004003611A5 - - Google Patents
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- Publication number
- JP2004003611A5 JP2004003611A5 JP2003052432A JP2003052432A JP2004003611A5 JP 2004003611 A5 JP2004003611 A5 JP 2004003611A5 JP 2003052432 A JP2003052432 A JP 2003052432A JP 2003052432 A JP2003052432 A JP 2003052432A JP 2004003611 A5 JP2004003611 A5 JP 2004003611A5
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- crbc
- rbc
- fine powder
- friction
- 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
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Description
実施例5〜10に対応するRBCまたはCRBC微粉末と合成樹脂の組成物は、実施例1〜4で製造したと同様にして、表1に示すような条件でRBC又はCRBCの微粉末を合成樹脂中に均一に分散して作製した。また、比較のために、市販の水中ポンプ用PPS樹脂(出光石油化学株式会社製)および窒化珪素を用いた。
【0024】
【本発明の効果】
表3の結果からも明らかなように、本発明のRBC又はCRBCの微粉末及び合成樹脂又は繊維強化合成樹脂で作られた水中用スリーブ軸受は、以下の効果を奏することが判明した。
1.摩擦係数を低下させることができる。
2.低すべり速度域と高すべり速度域での摩擦係数の差を、小さくすることができる。
3.繊維強化合成樹脂を用いた場合、前記1.〜2.に加えて、機械的性質も同時に向上させることが出来る。
4.射出成形できるので、生産効率に優れる。
5.低コストである。
また、本発明のRBC又はCRBCの微粉末及び合成樹脂からなる水中用スリーブ軸受は、水中での摩擦特性が際立って優れており、水冷式エンジンの冷却水循環ポンプなど、液体中で使われるポンプの軸受として、シールドしないで液体中で用いるスリーブ軸受構造など直接液体に触れる軸受を構成する材料として有望である。
[0024]
[Effects of the present invention]
As is clear from the results shown in Table 3, it was found that the underwater sleeve bearing made of the fine powder of RBC or CRBC and the synthetic resin or the fiber-reinforced synthetic resin of the present invention has the following effects.
1. The coefficient of friction can be reduced.
2. The difference in the coefficient of friction between the low slip speed range and the high slip speed range can be reduced.
3. When a fiber-reinforced synthetic resin is used, the above-mentioned 1. ~ 2. In addition, the mechanical properties can be improved at the same time.
4. Because it can be injection molded, it has excellent production efficiency.
5. Low cost.
Further, the underwater sleeve bearing made of fine powder of RBC or CRBC and synthetic resin of the present invention has remarkably excellent friction characteristics in water, and is suitable for pumps used in liquids such as a cooling water circulation pump of a water-cooled engine. As a bearing, it is promising as a material for forming a bearing that directly touches a liquid, such as a sleeve bearing structure used in a liquid without shielding.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003052432A JP2004003611A (en) | 2002-03-01 | 2003-02-28 | Sleeve bearing for underwater and its application |
US10/789,163 US20040258334A1 (en) | 2003-02-28 | 2004-02-26 | Underwater sleeve bearing and application thereof |
EP04251136A EP1452751A3 (en) | 2003-02-28 | 2004-02-27 | Underwater sleeve bearing and application thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002055307 | 2002-03-01 | ||
JP2003052432A JP2004003611A (en) | 2002-03-01 | 2003-02-28 | Sleeve bearing for underwater and its application |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004003611A JP2004003611A (en) | 2004-01-08 |
JP2004003611A5 true JP2004003611A5 (en) | 2006-03-16 |
Family
ID=30445734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003052432A Pending JP2004003611A (en) | 2002-03-01 | 2003-02-28 | Sleeve bearing for underwater and its application |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2004003611A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040258334A1 (en) * | 2003-02-28 | 2004-12-23 | Minebea Co., Ltd. | Underwater sleeve bearing and application thereof |
JP4565870B2 (en) | 2004-03-26 | 2010-10-20 | ミネベア株式会社 | Electric pump |
JP2009222208A (en) * | 2008-03-19 | 2009-10-01 | Kubota Corp | Bearing and pump having the same |
-
2003
- 2003-02-28 JP JP2003052432A patent/JP2004003611A/en active Pending
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