Machinery Lubrication magazine published by Noria Corporation
Issue link: https://www.e-digitaleditions.com/i/388231
www.machinerylubrication.com | September - October 2014 | 55 ML first testing performed by end users. It helps ensure that the lubricants delivered match those that were ordered and that deliveries meet acceptance quality standards. Typical tests include oil viscosity, viscosity index, atomic emission spectroscopy, Fourier transform infrared (FTIR) spectroscopy, water contamination and particle counts. Finally, there is testing used to monitor new oils in storage. Many are unaware that lubricants in storage have a shelf life. Over time, lubricants suffer the effects of contamination, biological growth, oxida- tion and degradation byproducts. If oils are stored for an extended period of time, they should be tested to verify that they have not deteriorated to the point of becoming useless. The table below provides compo- nent-specific routine and exception test slates for the majority of equipment used in plants today. Several of the tests listed as routine are fairly simple and can be performed in-house. At minimum, I would recommend that you have a particle counter and viscosity comparator to make certain that the lubricants you are receiving are SELECTInG OIL AnALYSIS TESTS BY APPLICATIOn Test or Procedure Paper Machine Oils Motor and Pump Bearings Diesel and Gas Engine Hydraulics Air and Gas Compressors Chillers and Refrigeration Transmissions, Final Drives and Differentials Industrial Gear Oils Steam Turbine Oils Gas Turbine Oils EHC Fluids*** 1. Particle Count 2. viscosity a. 40°C b. 100°C 3. An 4. Bn R R - R - R R - E(5a) - R - R - R R R - R - R R - R - R R - R - R R - R - R R - R - R R - R - R R - R - R R - R - 5. FTIR a. Ox./nit./Sul. b. Hindered Phen. c. ZDDP d. Fuel Dil./Soot 6. Flash Point 7. Glycol 8. Ferrous Density 9. Analytical Ferrography 10. RPvOT R - - - - - E(1) E(8,14a) - R R R - - - E(1) E(8,14a) - R - - R R E(14b) R E(8,14a) - R R R - - - R E(8,14a) - R R R - R* - R E(8,14a) R R - - - - - R E(8,14a) - R - R - - - R E(8,14a) - R R R - - - R E(8,14a) - R R - - - - E(1) E(8,14a) R R - - - E(2b,5d) - E(1) E(8,14a) R - - - - - - R E(8,14a) - 11. Crackle 12. Water by KF 13. Water Separability 14. Elemental Analysis a. Wear Metals b. K, na, B, Si c. Additives R E(11) R R,E(1) R R R E(11) - R,E(1) R R R E(11) - R R R R E(11) - R,E(1) R R R** E(11)** R** R,E(1) R R R E(11) - R,E(1) R R R E(11) - R R R R E(11) - R,E(1) R R R E(11) R R,E(1) R R - - - R,E(1) R R R E(11) - R,E(1) R R * Gas compressors only ** Air compressors only *** For phosphate ester fluids, consult your fluid supplier and/or turbine manufacturer R = Routine testing E = Exception test keyed to a positive result from the test in parenthesis Component-specific routine and exception test slates