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Extend equipment life and reduce operating costs
Effective filtration and analysis of oils in mechanical systems can extend equipment life and reduce operating costs.
From "Interesting Times"
The case for the effective management of your oils is overwhelming according to Danny Purcell of Rayco Proactive Maintenance Systems*. The breakdown of oil results from contamination by solids or water or from the effects of heat. These conditions can adversely affect the additives and the properties of the oil. This then results in the presence of wear debris, wear metal and corrosion products in the oil. The failure of machine elements and surfaces occurs shortly afterwards.
ISO 4406, "Hydraulic fluid power -- Fluids -- Method for coding level of contamination by solid particles", describes a method for coding oil according to its level of contamination. This standard details a Range Number for oils based on the number of contaminant particles per millilitre (ml) larger than 5 micron (R5Microns) and the number of particles per litre larger than 15 micron (R15Micron). An oil rating in terms of R5Microns / R15Micron defines the cleanliness of the oil. An oil that is measured to have 400 particles greater than 5 micron per ml and 65 particles greater than 15 micron per ml has an ISO number of 16/13.
Rayco Proactive Maintenance Systems recommend ISO ratings for particular applications. Examples are: ISO 13/10 for high pressure or servo hydraulic systems and ISO 14/11 for turbines and other rotating equipment.
Danny reports that efforts to control oil cleanliness within these limits can result in enormous benefits. Case studies from other industries have shown:
A process of filtration, removal of water contamination, and oil analysis is recommended to ensure that oil is kept in top condition. Danny gives the following tips for managing your oil improvement program:
Clean oil both indicates and ensures healthy equipment. Oil lubricates, cools, prevents corrosion in and removes impurities from mechanical systems. Attention to oil condition can result in a high standard of equipment performance and deliver returns in terms of lower operating costs and improved equipment reliability.
*Rayco Proactive Maintenance Systems are Maintenance Engineering specialists who provide application engineering and condition monitoring designs that monitor and control the root causes of machine failure. Rayco covers the Asia Pacific region from their base in Singapore: Loyang Offshore Supply Base, Box 5081, Loyang Crescent Singapore 508988 Tel (065) 542 0824. Fax Tel (065) 542 0824 E-mail email@example.com