JP2510935Y2 - Sintered oil-impregnated bearing - Google Patents
Sintered oil-impregnated bearingInfo
- Publication number
- JP2510935Y2 JP2510935Y2 JP1990123274U JP12327490U JP2510935Y2 JP 2510935 Y2 JP2510935 Y2 JP 2510935Y2 JP 1990123274 U JP1990123274 U JP 1990123274U JP 12327490 U JP12327490 U JP 12327490U JP 2510935 Y2 JP2510935 Y2 JP 2510935Y2
- Authority
- JP
- Japan
- Prior art keywords
- grease
- sintered oil
- impregnated
- air permeability
- bearing
- 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.)
- Expired - Fee Related
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は焼結含油軸受に関し、特に含浸グリースと
の適合性のよい焼結含油軸受に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a sintered oil-impregnated bearing, and more particularly to a sintered oil-impregnated bearing having good compatibility with impregnated grease.
焼結含油軸受は、50μｍ以下（多くは10μｍ以下）の
細孔が分布しているのが一般的である。このような細孔
内にグリースを十分に含浸させるために、半固体状のグ
リースにせん断加工による均質化処理を施して液状化し
たのち、加熱により液体グリースに相転移させて真空含
浸させる方法が有効である。このことは、先に本出願人
が提案しているところである（特願平1-222660号）。Generally, sintered oil-impregnated bearings have pores of 50 μm or less (mostly 10 μm or less) distributed. In order to sufficiently impregnate the grease in such pores, a method in which semi-solid grease is homogenized by shearing and liquefied and then heated to cause phase transition to liquid grease and vacuum impregnation is proposed. It is valid. This has been previously proposed by the present applicant (Japanese Patent Application No. 1-222660).
上記のように、焼結含油軸受に含浸し易いグリースに
ついての開発は行なわれているが、焼結含油軸受自体に
ついては従来どおり２〜７×10-11cm2の通気度をもった
ものが使用されていた。As described above, although the development of grease that can easily impregnate sintered oil-impregnated bearings has been carried out, the sintered oil-impregnated bearing itself has the air permeability of 2 to 7 × 10 -11 cm 2 as before. Had been used.
しかしながら、前述のように半固体状のグリースに均
質化処理を施して液状化し、加熱により液体グリースに
相転移させて真空含浸させるようにした改善されたグリ
ースを用いる場合、従来の焼結含油軸受は通気度の点で
改善されたグリースの特性を十分発揮させることができ
ない。However, as described above, when using an improved grease that is liquefied by subjecting semi-solid grease to homogenization treatment and undergoes phase transition to liquid grease by heating for vacuum impregnation, conventional sintered oil-impregnated bearings are used. Cannot fully exhibit the grease properties improved in terms of air permeability.
そこで、この考案は上述の改善されたグリースに適し
た通気度を有する焼結含油軸受を提供することを技術的
課題とする。Then, this invention makes it a technical subject to provide the sintered oil-impregnated bearing which has the air permeability suitable for the above-mentioned improved grease.
上記の課題を解決するために、この考案は半固体状グ
リースに均質化処理を施してなるグリースを含浸させた
焼結含油軸受において、軸受の通気度を10〜50×10-11c
m2に形成した構成としたものである。In order to solve the above problems, the present invention provides a sintered oil-impregnated bearing obtained by impregnating a semi-solid grease with a homogenized grease, so that the air permeability of the bearing is 10 to 50 × 10 -11 c.
It has a structure formed in m 2 .
なお、ここに通気度とは、一般に液体が多孔体を通っ
て流れる容易さを示す特性係数であり、通気度Φは次式
で現わされる。The air permeability here is a characteristic coefficient indicating the ease with which a liquid flows through a porous body, and the air permeability Φ is expressed by the following equation.
ここに、Q:流量 μ：粘性係数 L:多孔体の長さ A:断面積 ΔP:多孔体の長さにわたって作用している圧力差 である。 Here, Q: flow rate μ: viscosity coefficient L: length of porous body A: cross-sectional area ΔP: pressure difference acting over the length of porous body.
半固体状グリースに均質化処理を施すとグリースは液
状化し、その液状化グリースを加熱して液体グリースと
し、これを真空含浸させる場合、このグリースは低濃度
で見かけ粘度が小さく含浸しやすい状態にある。しか
し、増稠剤繊維の影響により従来の通気度では軸受の空
孔内に入り難いが、上記のように通気度を10〜50×10
-11cm2とすると、空孔内に入り易くなる。このため、潤
滑機構において、油圧のバランスがとれ、油膜の形成が
確実に行なわれ、軸受の諸特性を改善させる。When homogenized semi-solid grease is liquefied, the liquefied grease is heated to form liquid grease, and when this is vacuum impregnated, this grease has a low concentration and a low apparent viscosity, making it easy to impregnate. is there. However, due to the effect of the thickener fiber, it is difficult to enter the holes of the bearing with the conventional air permeability, but as described above, the air permeability is 10 to 50 × 10
If it is -11 cm 2 , it will be easier to enter the holes. Therefore, in the lubrication mechanism, the oil pressure is balanced, the oil film is reliably formed, and various characteristics of the bearing are improved.
焼結含油軸受の材料は銅及びすずからなる金属粉末と
グラファイト微粉末とを混合したものである。混合粉末
を成形する際の圧縮程度を加減することにより、焼結後
所要の通気度をもった焼結体が得られる。この焼結体に
均質化処理により改善されたグリースを真空含浸するこ
とにより空孔１にグリース２が含浸された焼結含油軸受
３を得ることができる。The material of the sintered oil-impregnated bearing is a mixture of metal powder of copper and tin and fine graphite powder. By adjusting the degree of compression when molding the mixed powder, a sintered body having a required air permeability after sintering can be obtained. The sintered oil-impregnated bearing 3 having the pores 1 impregnated with the grease 2 can be obtained by vacuum impregnating the sintered body with the grease improved by the homogenization treatment.
上記の軸受３の通気度は10〜50×10-11cm2の範囲とす
る。その理由は、通気度がこれより小さいとグリースの
出入りが悪くなり、逆にこれより大きいと焼結体の組織
が分離し易くなり、焼結体となり難くなり、またグリー
スが空孔内部に入りすぎて相手面との間に油膜を形成す
ることが困難になるからである。The air permeability of the above bearing 3 is in the range of 10 to 50 × 10 -11 cm 2 . The reason for this is that if the air permeability is lower than this, the grease will not flow in and out more easily, and if it is higher than this, the structure of the sintered body will separate easily, making it difficult to form a sintered body. This is because it becomes difficult to form an oil film between the other surface and the other surface.
なお、最も望ましい、通気度は20×10-11cm2程度であ
る。The most desirable air permeability is about 20 × 10 -11 cm 2 .
初期特性の試験結果につき、従来品（通気度４〜５×
10-11cm2、潤滑油使用）と、本考案品（通気度20×10
-11cm2、50×10-11cm2、均質化処理グリース使用）とを
比較して第２図に示す。Based on the test results of the initial characteristics, the conventional product (air permeability 4-5 ×
10 -11 cm 2 , using lubricating oil, and this product (air permeability 20 × 10
-11 cm 2 , 50 × 10 -11 cm 2 , using homogenized grease) is shown in FIG.
また、回転トルクの試験結果につき、上記の従来品と
本考案品とを比較して第３図に示す。The results of the rotational torque test are shown in FIG. 3 comparing the above conventional product and the device of the present invention.
以上のように、この考案は半固体状グリースに均質化
処理を施してなる改善されたグリースを含浸させた焼結
含油軸受において、軸受の通気度を10〜50×10-11cm2に
形成したことにより、改善されたグリースが含浸し易く
なると共に、相手面との間に油膜が出来易くなる。その
結果軸受の諸特性を改良することができる。As described above, the present invention, in a sintered oil-impregnated bearing impregnated with improved grease obtained by homogenizing semi-solid grease, has a bearing air permeability of 10 to 50 × 10 -11 cm 2 . By doing so, the improved grease is easily impregnated, and an oil film is easily formed between the grease and the mating surface. As a result, various characteristics of the bearing can be improved.
第１図は焼結含油軸受の断面図、第２図は初期特性の試
験結果を示すグラフ、第３図は回転トルクの試験結果を
示すグラフである。 １……空孔、２……グリース、３……焼結含油軸受。FIG. 1 is a sectional view of a sintered oil-impregnated bearing, FIG. 2 is a graph showing test results of initial characteristics, and FIG. 3 is a graph showing test results of rotational torque. 1 ... Hole, 2 ... Grease, 3 ... Sintered oil-impregnated bearing.
Claims (1)
るグリースを含浸させた焼結含油軸受において、軸受の
通気度を10〜50×10-11cm2に形成したことを特徴とする
焼結含油軸受。1. A sintered oil-impregnated bearing obtained by impregnating a semi-solid grease with a homogenized grease, wherein the bearing has an air permeability of 10 to 50 × 10 -11 cm 2. Sintered oil-impregnated bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990123274U JP2510935Y2 (en) | 1990-11-22 | 1990-11-22 | Sintered oil-impregnated bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990123274U JP2510935Y2 (en) | 1990-11-22 | 1990-11-22 | Sintered oil-impregnated bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0480926U JPH0480926U (en) | 1992-07-14 |
| JP2510935Y2 true JP2510935Y2 (en) | 1996-09-18 |
Family
ID=31870989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990123274U Expired - Fee Related JP2510935Y2 (en) | 1990-11-22 | 1990-11-22 | Sintered oil-impregnated bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2510935Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3573817B2 (en) * | 1995-02-24 | 2004-10-06 | 日立粉末冶金株式会社 | Sintered alloy valve guide for internal combustion engines |
| JP5918510B2 (en) * | 2011-11-16 | 2016-05-18 | Ntn株式会社 | Electric linear actuator |
| JP6121760B2 (en) * | 2013-03-19 | 2017-04-26 | Ntn株式会社 | Electric linear actuator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7217427A (en) * | 1972-12-21 | 1974-06-25 | ||
| JPH0665891B2 (en) * | 1987-02-09 | 1994-08-24 | エヌティエヌ株式会社 | Porous plain bearing and method for manufacturing the same |
-
1990
- 1990-11-22 JP JP1990123274U patent/JP2510935Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0480926U (en) | 1992-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4798771A (en) | Bearings and other support members made of intercalated graphite | |
| US2813041A (en) | Method of impregnating porous metal strip with polytetrafluoroethylene | |
| JP6921046B2 (en) | Manufacturing method of sintered bearing | |
| JPS63111312A (en) | Double layer bearing and manufacture thereof | |
| EP0416120B1 (en) | Porous plain bearing and method of manufacturing same | |
| US6289590B1 (en) | Method of forming a bearing | |
| JP6114512B2 (en) | Sintered bearing and manufacturing method thereof | |
| JP2510935Y2 (en) | Sintered oil-impregnated bearing | |
| DE4038139A1 (en) | Composite plain bearing used in Diesel engines - comprises aluminium@ alloy coating on steel support layer having aluminium oxide-contg. coating having pores filled with solid lubricant | |
| US2893793A (en) | Oil-impregnated bearing having molybdenum sulfide coating and method of making same | |
| KR850007812A (en) | Bearing material and its manufacturing method | |
| CN108465808A (en) | A kind of preparation method of tin bronze ferrous based powder metallurgical and its oiliness bearing | |
| JP2907999B2 (en) | High temperature sintered plain bearings | |
| CN108907181A (en) | Copper-based oil containing bearing material of a kind of graphene enhancing and its preparation method and application | |
| JP3446810B2 (en) | Multi-layer sintered sliding member and manufacturing method thereof | |
| JPS6347762B2 (en) | ||
| JP2003021144A (en) | Resin composite sliding member and manufacturing method of the same | |
| DE112017004520T5 (en) | Sintered bearing and process for its production | |
| JPS6237681B2 (en) | ||
| JPH08269221A (en) | Porous body and gasket made therefrom | |
| JPS6142976Y2 (en) | ||
| JPH0819940B2 (en) | Sintered oil-impregnated bearing | |
| JPH0631219Y2 (en) | Oil-impregnated bearing | |
| JP2808374B2 (en) | Oil-impregnated bearing | |
| JP2558955Y2 (en) | Sintered plain bearings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |