Vibration and oil analysis for monitoring problems related to water contamination in rolling
MetadataShow full item record
Trying to reduce particle contamination in lubrication systems, industries of the whole world spend millions of dollars each year on the improvement of filtration technology. In this context, by controlling fluid cleanliness, some companies are able to reduce failures rates up to 85 percent. However, in some industries and environments, water is a contaminant more frequently encountered than solid particles, and it is often seen as the primary cause of component failure. Only one percent of water in oil is enough to reduce life expectancy of a journal bearing by 80 percent. For rolling bearing elements, the situation is worse because water destroys the oil film and, under the extreme temperatures and pressures generated in the load zone of a rolling bearing element, free and emulsified water can result in instantaneous flash-vaporization giving origin to erosive wear. This work studies the effect of water as lubricant contaminant in ball bearings, which simulates a situation that could actually occur in real systems. In a designed bench test, three basic lubricants of different viscosities were contaminated with different contents of water. The results regarding oil and vibration analysis are presented for different bearing speeds.
How to cite this document
Showing items related by title, author, creator and subject.
Elias, J. M.; Salati Filho, E.; Salati, E. (Water Science and Technology, 2001) [Trabalho apresentado em evento]The project is being conducted in the town of Analândia, São Paulo, Brazil. The constructed wetlands system for water supply consists of a channel with floating aquatic macrophytes, HDS system (Water Decontamination with ...
Hydrochemical evaluation of bottled mineral waters and spring at Corumbataí city, São Paulo State, Brazil Bonotto, Daniel Marcos ; Tessari, B. W. (WIT Transactions on Ecology and the Environment, 2012) [Trabalho apresentado em evento]This investigation was carried out within São Paulo State, Brazil, and involved the sampling of well-known mineral bottled waters for performing a comparative hydrochemical study and of a spring occurring at Corumbataí ...
Godoy Jr., Ederaldo ; Camargo, José Rui; Silveira, José Luz (A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme, 2008) [Trabalho apresentado em evento]This work introduces an innovative urinal for public convenience, that promotes at the same time water reuse and personal higiene, in a safe and economical way . Furthermore it demonstrates the latest technology and its ...