GB1581022A - Slide bearing material - Google Patents
Slide bearing material Download PDFInfo
- Publication number
- GB1581022A GB1581022A GB2481/78A GB248178A GB1581022A GB 1581022 A GB1581022 A GB 1581022A GB 2481/78 A GB2481/78 A GB 2481/78A GB 248178 A GB248178 A GB 248178A GB 1581022 A GB1581022 A GB 1581022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier layer
- layer
- bearing material
- weight
- polyoxymethylene
- 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
Links
- 239000000463 material Substances 0.000 title claims description 57
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 22
- -1 polyoxymethylene Polymers 0.000 claims description 22
- 229920006324 polyoxymethylene Polymers 0.000 claims description 22
- 239000003822 epoxy resin Substances 0.000 claims description 19
- 229920000647 polyepoxide Polymers 0.000 claims description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920001721 polyimide Polymers 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 230000006378 damage Effects 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000001976 improved effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920002312 polyamide-imide Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229910001361 White metal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
Classifications
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Description
(54) SLIDE BEARING MATERIAL
(71) We, KARL SCHMIDT GMBH, a body corporate organised under the Laws of the German Federal Republic, of Christian
Schmidt-Strasse 8/12, 7107 Neckarsulm, German Federal Republic, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a slide bearing material.
It has already been proposed to provide a slide bearing material consisting of a porous metallic carrier layer 0.1 to 0.5 mm thick sintered on to a metallic supporting layer, the pores of the carrier layer being filled completely with a thermoplastic or thermosetting plastics which is a polyoxymethylene or expoxide resin, and which may contain up to 20% of one or more materials which improve the sliding. The filling of polyoxymethylene or epoxide resin is preferably such that, above a layer of the polyoxymethylene or epoxide resin > 0.1 to 1.0 mm. thick which may contain one or more materials which improve the sliding properties of the material.
This slide bearing material satisfies requirements between those satisfied by metallic slide bearing materials and those satisfied by slide bearing materials which are suitable for pure dry bearings.
In its fundamental structure, this slide bearing material consists of a metallic supporting layer and a porous sintered metallic carrier layer the pores of which are filled with a polyoxymethylene or epoxide resin in such a manner that there is arranged over the carrier layer a covering layer, consisting of the same material, of 0.1 to 1.0 mm thickness. The running surface may be formed with a large number of recesses which are filled with a lubricant before the assembly of the journal and the bearing.
This slide bearing material is eminently suited for running under extreme-boundary lubrication conditions, e.g. in the case of oscillating rotary movement, high pressure, low speed, frequent start-stop-start under load. This means that the slide bearing material, which requires little maintenance, is suitable in particular for those points in a bearing which only have to be lubricated from time to time.
The slide bearing material is particularly suitable where full lubrication is too expensive but pure dry bearing materials do not meet the demands made on them. The polyoxymethylene and epoxide resin have comparatively low coefficients of friction the values being in the range 0.01 to 0.1 and have a low tendency to bond with the materials of the bearing journal. Further, the bearing material is as capable of embedding foreign bodies which have penetrated into the bearing gap as white metal bearings. The bearing material moreover possesses the advantage that the polyoxymethylene and epoxide resin used do not swell and, accordingly, a narrowing of the bearing play in moist atmosphere does not occur. However, it cannot be avoided that in the case of possible operating troubles the covering layer is removed or destroyed to such an extent that the carrier layer is locally exposed.
In such cases, it has frequently been found that the carrier layer does not possess the emergency running properties required.
After the journal runs against the carrier layer, the bearing journal is considerably affected, i.e., it must mostly be replaced by a new one.
It is therefore an object of the present invention to minimise or reduce such damage to a bearing journal, when a slide bearing itself has been damaged as a result of operating troubles.
Accordingly the present invention pro vides a bearing material, wherein the material comprises a porous metallic carrier layer which is from 0.1 to 0.5 mm. thick sintered on to a metallic supporting layer, the pores of the carrier layer being filled completely with a polyoxymethylene or epoxide resin, and wherein the carrier layer consists of an alloy of the composition 0;5 to 50% by weight of lead and 0.5 to 20% by weight of tin, the remainder copper.
Preferably, the alloy is composed of 5 to 25%' by weight of lead and 5 to 15% of tin, the remainder being copper.
An improved effect is achieved because the lead incorporated in the individual powder particles of the porous sintered carrier layer is available in extremely finely divided form as additional lubricant during contact of a counter-rotating surface with the carrier layer, and, as a result, the destruction of the bearing journal is substantially reduced or even prevented.
It may be advantageous if a metallic intermediate layer, preferably consisting of copper, is arranged between the carrier layer and the supporting layer.
The polyoxymethylene or epoxide resin which fills the pores of the carrier layer and forms the covering layer may contain, as materials which improve the sliding, molybdenum disulphide, graphite, lead monoxide, a polyamide, a polyimide, a microencapsulated lubricant, or two or more such materials. Where the carrier layer comprises a polyamide or polyimide, the proportion of these materials may be larger than the proportion of polyoxymethylene or epoxide resin.
In order to enable the invention to be more readily understood, a slide bearing material -according to the invention is shown by way of example in the accompanying drawing in cross-section.
As shown in the drawing, a porous carrier layer 1 is intered on to a steel supporting layer 2, the carrier layer 1 consisting of 10% by weight of lead, 10% by weight of tin and the remainder copper. The pores of the carrier layer 1 are filled with polyoxymethylene 3, which also forms a covering layer.
WHAT WE CLAIM IS:
1. A bearing material, wherein the material comprises a porous metallic carrier layer which is from 0.1 to 0.5 mm. thick sintered on to a metallic supporting layer, the pores of the carrier layer being filled completely with a polyoxymethylene or epoxide resin, and wherein the carrier layer consists of an alloy of the composition 0.5 to 50% by weight of lead and 0.5 to 20% by weight of tin, the remainder copper.
2. A bearing material as claimed in Claim 1, wherein the carrier layer consists of an alloy of the composition 5 to 25% by weight of lead and 5 to 15% by weight of tin, the remainder copper.
3. A bearing material as claimed in Claim 1 or 2, wherein an intermediate layer is arranged between the carrier layer and the supporting layer.
4. A bearing material as claimed in Claim 3, wherein the intermediate layer is of copper.
5. A bearing material as claimed in any one of Claims 1 to 4, wherein a layer of said polyoxymethylene or epoxide resin > 0.1 to 0.4 nim. thick is present above said carrier layer.
6. A bearing maferial as claimed in any one of Claims l to 5, wherein said polyoxymethylene or epoxide resin contains one or more additional materials for improving the sliding properties of the bearing material.
7. A bearing material as claimed in Claim 6, wherein said polyoxymethylene or epoxide resin contains up to 20% by weight of said additional material(s).
8. A bearing material as claimed in Claim 6 or 7, wherein said additional material is molybdenum disulphide, graphite, lead monoxide, a polyamide, a, polyimide, a microencapsulated lubricant, or two or more thereof.
9. A bearing material substantially as hereinbefore described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (9)
1. A bearing material, wherein the material comprises a porous metallic carrier layer which is from 0.1 to 0.5 mm. thick sintered on to a metallic supporting layer, the pores of the carrier layer being filled completely with a polyoxymethylene or epoxide resin, and wherein the carrier layer consists of an alloy of the composition 0.5 to 50% by weight of lead and 0.5 to 20% by weight of tin, the remainder copper.
2. A bearing material as claimed in Claim 1, wherein the carrier layer consists of an alloy of the composition 5 to 25% by weight of lead and 5 to 15% by weight of tin, the remainder copper.
3. A bearing material as claimed in Claim 1 or 2, wherein an intermediate layer is arranged between the carrier layer and the supporting layer.
4. A bearing material as claimed in Claim 3, wherein the intermediate layer is of copper.
5. A bearing material as claimed in any one of Claims 1 to 4, wherein a layer of said polyoxymethylene or epoxide resin > 0.1 to 0.4 nim. thick is present above said carrier layer.
6. A bearing maferial as claimed in any one of Claims l to 5, wherein said polyoxymethylene or epoxide resin contains one or more additional materials for improving the sliding properties of the bearing material.
7. A bearing material as claimed in Claim 6, wherein said polyoxymethylene or epoxide resin contains up to 20% by weight of said additional material(s).
8. A bearing material as claimed in Claim 6 or 7, wherein said additional material is molybdenum disulphide, graphite, lead monoxide, a polyamide, a, polyimide, a microencapsulated lubricant, or two or more thereof.
9. A bearing material substantially as hereinbefore described with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2703325A DE2703325C2 (en) | 1977-01-27 | 1977-01-27 | Plain bearing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1581022A true GB1581022A (en) | 1980-12-10 |
Family
ID=5999689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2481/78A Expired GB1581022A (en) | 1977-01-27 | 1978-01-20 | Slide bearing material |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2703325C2 (en) |
| FR (1) | FR2378976A1 (en) |
| GB (1) | GB1581022A (en) |
| IT (1) | IT7819637A0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1857694A1 (en) * | 2006-05-18 | 2007-11-21 | Hamilton Sundstrand Corporation | Lubricated metal bearing material |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3225552C2 (en) * | 1982-07-08 | 1985-02-14 | Oexle, Friedrich, 7000 Stuttgart | Sliding or brake lining |
| DE3425969A1 (en) * | 1984-07-14 | 1986-01-16 | Kolbenschmidt AG, 7107 Neckarsulm | COMPOSITE BEARING MATERIAL |
| IT1178784B (en) * | 1984-12-21 | 1987-09-16 | Samim Soc Azionaria Minero Met | COMPOSITE MATERIAL |
| JP2907999B2 (en) * | 1990-11-16 | 1999-06-21 | 日立粉末冶金株式会社 | High temperature sintered plain bearings |
| JP3292445B2 (en) | 1996-07-30 | 2002-06-17 | エヌデーシー株式会社 | Sliding material with excellent wear resistance |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB732108A (en) * | 1951-10-19 | 1955-06-22 | Glacier Co Ltd | Improvements in or relating to plain bearings |
| GB800135A (en) * | 1956-03-16 | 1958-08-20 | Bound Brook Bearings Ltd | Porous metal bearing, and method of manufacturing the same |
| US3145101A (en) * | 1961-03-30 | 1964-08-18 | Franssen Hermann | Compound materials and methods of producting the same |
| US3205027A (en) * | 1962-04-16 | 1965-09-07 | Masten Corp | Pillow block |
| FR2094472A5 (en) * | 1968-02-24 | 1972-02-04 | Kempf Duria Werk | Low friction interlay for leaf springs |
| JPS4944597B1 (en) * | 1970-02-27 | 1974-11-29 |
-
1977
- 1977-01-27 DE DE2703325A patent/DE2703325C2/en not_active Expired
- 1977-12-30 FR FR7739855A patent/FR2378976A1/en active Pending
-
1978
- 1978-01-20 GB GB2481/78A patent/GB1581022A/en not_active Expired
- 1978-01-26 IT IT7819637A patent/IT7819637A0/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1857694A1 (en) * | 2006-05-18 | 2007-11-21 | Hamilton Sundstrand Corporation | Lubricated metal bearing material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2703325A1 (en) | 1978-08-10 |
| DE2703325C2 (en) | 1983-01-13 |
| IT7819637A0 (en) | 1978-01-26 |
| FR2378976A1 (en) | 1978-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940120 |