The selection of lubricants for use at low temperatures
The essential purpose of a lubricant is to reduce friction and to minimize wear. This object is achieved by preventing the physical contact of moving surfaces by maintaining between them a thin layer of a suitable fluid, the lubricant. The lubricant should adhere strongly to the boundary surfaces, s...
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Cambridge University Press (CUP)
1951
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Online Access: | http://dx.doi.org/10.1017/s0032247400040614 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400040614 |
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crcambridgeupr:10.1017/s0032247400040614 2024-03-03T08:48:20+00:00 The selection of lubricants for use at low temperatures Sellers, E. S. 1951 http://dx.doi.org/10.1017/s0032247400040614 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400040614 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 6, issue 42, page 237-244 ISSN 0032-2474 1475-3057 General Earth and Planetary Sciences Ecology Geography, Planning and Development journal-article 1951 crcambridgeupr https://doi.org/10.1017/s0032247400040614 2024-02-08T08:26:29Z The essential purpose of a lubricant is to reduce friction and to minimize wear. This object is achieved by preventing the physical contact of moving surfaces by maintaining between them a thin layer of a suitable fluid, the lubricant. The lubricant should adhere strongly to the boundary surfaces, so that when they are in relative motion, a film of lubricant is “dragged along” between them, forcing them apart and keeping them out of physical contact with each other. The maintenance of this layer during actual movement of the surfaces depends on a property common to all fluids, namely, viscosity. Viscosity is a measure of the resistance of liquids to shearing forces; for instance, an oil which pours out of a spout slowly is usually termed a “thick oil”, while one which pours easily is described as “thin”. It is more correct to speak of these oils as having “high” and “low” viscosities respectively. In general, the higher the viscosity of the fluid used, the easier it is to maintain a film during movement of the bearing surfaces. But because a high viscosity means a high resistance to shearing forces on the lubricant itself, more power is needed to maintain the desired relative motion of the surfaces. Article in Journal/Newspaper Polar Record Cambridge University Press Polar Record 6 42 237 244 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
spellingShingle |
General Earth and Planetary Sciences Ecology Geography, Planning and Development Sellers, E. S. The selection of lubricants for use at low temperatures |
topic_facet |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
description |
The essential purpose of a lubricant is to reduce friction and to minimize wear. This object is achieved by preventing the physical contact of moving surfaces by maintaining between them a thin layer of a suitable fluid, the lubricant. The lubricant should adhere strongly to the boundary surfaces, so that when they are in relative motion, a film of lubricant is “dragged along” between them, forcing them apart and keeping them out of physical contact with each other. The maintenance of this layer during actual movement of the surfaces depends on a property common to all fluids, namely, viscosity. Viscosity is a measure of the resistance of liquids to shearing forces; for instance, an oil which pours out of a spout slowly is usually termed a “thick oil”, while one which pours easily is described as “thin”. It is more correct to speak of these oils as having “high” and “low” viscosities respectively. In general, the higher the viscosity of the fluid used, the easier it is to maintain a film during movement of the bearing surfaces. But because a high viscosity means a high resistance to shearing forces on the lubricant itself, more power is needed to maintain the desired relative motion of the surfaces. |
format |
Article in Journal/Newspaper |
author |
Sellers, E. S. |
author_facet |
Sellers, E. S. |
author_sort |
Sellers, E. S. |
title |
The selection of lubricants for use at low temperatures |
title_short |
The selection of lubricants for use at low temperatures |
title_full |
The selection of lubricants for use at low temperatures |
title_fullStr |
The selection of lubricants for use at low temperatures |
title_full_unstemmed |
The selection of lubricants for use at low temperatures |
title_sort |
selection of lubricants for use at low temperatures |
publisher |
Cambridge University Press (CUP) |
publishDate |
1951 |
url |
http://dx.doi.org/10.1017/s0032247400040614 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400040614 |
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Polar Record |
genre_facet |
Polar Record |
op_source |
Polar Record volume 6, issue 42, page 237-244 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247400040614 |
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Polar Record |
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6 |
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42 |
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237 |
op_container_end_page |
244 |
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1792505136245899264 |