TABLE OF CONTENTS We have established that when choosing suitable oil for use, the most important characteristics of oil, as reviewed in sections 4.3 and 4.4, are viscosity and viscosity index. Once decided, choosing characteristics best suitable for the application requirement can further narrow down the correct choice. Figure 4.5 depicts a typical oil specification sheet that identifies many of these characteristics and allows the reader to readily identify attributes of choice. The following explains the relevance of each characteristic:
Pour Point Is the temperature point at which the oil has thickened enough so that it can no longer be poured. This information is important to know when faced with low temperature applications.
Flash Point Is the temperature at which the lubricant s vapor will flash ignite. This information is important when looking at high temperature applications
Fire Point Is a higher temperature than the flash point and is the temperature at which the lubricant will catch fire.
Copper Corrosion Is a measure of how the lubricant will chemically attack and corrode a copper strip under laboratory conditions. This test determines the suitability of an oil to lubricate bronze/copper content bearing materials.
Demulsibility Is a measure of the lubricant s ability to separate water. For most industrial lubrication applications this is a desirable attribute, especially in circulating oil systems that encounter water as a contaminant. This would not, however, be a desirable attribute in a brake system oil.
Antl-Foaming Foaming...
