Machinery Lubrication


Machinery Lubrication magazine published by Noria Corporation

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Page 17 of 76 | September - October 2017 | 13 ML the lubricant at 75 percent of the end of the RPVOT time (25 percent of the new oil's value) for both the PAG and mineral oil examples. In-service Samples Now the question becomes what do you see in the field. Is the field behavior of the lubricants the same as the bench oxidation tests? Field samples are difficult to obtain for many reasons, not the least of which is the time required to generate them. In examining the data below, you can see the same trends in the field as in the bench testing of the lubricants. This should provide confidence in bench testing and allow for rational conclusions about the lubricants being studied. A Better Approach When evaluating new lubricants, it can be difficult to determine whether the information being advertised by manufacturers is valid. A better approach is to utilize these standard performance tests that have been used success- fully in the industry for years. They can enable you to make better business decisions and help optimize your lubrication program. In-service field samples TESTING SERIES AN (ASTM D974) DEMULSIBILITY (ASTM D1401) RPVOT (ASTM D2272) MPC (ASTM D7843) (RUL 1) AMINE (RUL 2) PHENOL 8-year-old PAG 0.34 0-2-78 (30) 468 9 38077 82% 5-year-old Mineral Oil 1 0.11 40-40-0 (25) 1304 20.3 5775 98% 12- to 14-year-old Mineral Oil 1 0.11 30-38-12 (30) 1312 18.0 4169 71% 4-year-old Mineral Oil 2 0.01 42-38-0 (20) 1344 22.3 1262.5 4919 19% 74% PRUFTECHNIK is a leading single-source solution provider for machine laser alignment, condition monitoring and nondestructive testing. PRUFTECHNIK's technical innovations optimize the availability of your rotating equipment—and stop small amounts weighing heavily on your bottom line.

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