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In This Issue
| - Basics of Ferrous Density in Oil Analysis
- Contamination of Biobased Hydraulic Oils
- Name a Test Used for Proactive Maintenance
- Causes of Lubricant Foam
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 | Ferrous density should be considered a primary test for all machines where ferrous wear material is expected. Correlating ferrous density data along with other oil analysis test information can give you a wide picture and a solid understanding of the internal condition of your machine. Watch this 5-minute, 51-second video to learn about the two general types of ferrous density testing, including what they measure, how they are performed, the results you can expect and the advantages of each. |
| Demand for biobased hydraulic fluids has increased in the last decade. Motivation for this change comes from users being more conscious about environmental risks and from government policies to create new markets for agricultural products. One of the major obstacles in this market conversion is the sensitivity of biobased ester fluids or biodegradable fluids to contamination with traditional mineral hydraulic oils. |
FULL STORY
Test your knowledge and prepare for ICML lubrication and oil analysis certification.
Question: Name an oil analysis test used for proactive maintenance.
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From "Lubrication and Maintenance of Industrial Machinery":
Lubricant foam has a low load-carrying ability. Excessive foam build-up in a reservoir or sump will rapidly lead to excessive wear and catastrophic failure of the system. Too high a level of lubricant in an engine sump by overfilling or miscalibration of the level indicator (dipstick) causes the crankshaft and connecting rod big-end caps to whip up the lubricant into an all-pervading foam. Rapid damage then ensues. Air leaks into the oil flow or an open drop from a supply pipe into a hydraulic fluid reservoir can generate foam. Operationally, engines should not be overfilled, the level indicator corrected, leaks stopped and supply pipes extended to deliver return lubricant below normal liquid surface level in a reservoir.
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