Machinery Lubrication

Machinery Lubrication March April 2016

Machinery Lubrication magazine published by Noria Corporation

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quicker full separation. This result shows that the original 40 milliliters (ml) of oil fully sepa- rated from the 40 ml of water. As fluid ages, there tends to be a difference in these values, partic- ularly in oils that have been contaminated with water. Conversely, 0/0/80 would be the worst possible result. In this case, the oil and water never separate, and what is left is known as a stable emulsion. Of all states of water in oil, emulsi- fied water is considered the most destructive. As oil flows through a system, the emulsified water flows with it and can cause increased machine damage through corrosion, impaired load-carrying capability and a long list of other issues. A value of less than 30 means that the measured separation occurred in less than 30 minutes. Provided the oil and water sepa- rated completely, the oil's demulsibility properties are likely still intact. The best way to know whether the results for used oil are satisfactory is to start with a good baseline. As new oils are delivered, they should be subjected to these types of tests to establish a baseline for comparison. If you have a question for one of Noria's experts, email it to editor@

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