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STLE (Society of Tribologists & Lubrication Engineers) |
When two surfaces, round or flat, are in contact and one is moving, we recognize that friction is preventing smooth and easy movement, that we may wish to squirt a bit of lubricant onto one surface to reduce the friction, and that one or both surfaces may show wear tracks after some time has passed. When engineers change the design of a shaft and bearing, the friction may be reduced and the bearing may show less wear. |
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STLE (Society of Tribologists & Lubrication Engineers) |
From practical experience, we know that adding a lubricant to a solid-solid contact will significantly reduce friction. The reduced friction leads to less wear, heat generation and energy loss – all of which reduce operation costs and downtime. How lubricants provide these benefits will be explored in this course. |
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STLE (Society of Tribologists & Lubrication Engineers) |
Viscosity is the resistance to flow of a fluid, in our case, a lubricating oil. |
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STLE (Society of Tribologists & Lubrication Engineers) |
Early investigators could not do much to investigate wear because it is usually a very gradual process, and they did not have accurate means to quantify it. Although friction and wear influence each other, the relationship is complex and involves many other factors including the chemical environment and temperature, each of which influences the others. A simple correlation between friction and wear data is therefore hardly ever found |
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