Vibration analysis monitors misalignment and looseness while oil analysis monitors lubricant quality, contamination, and machine wear They collaborate on root cause determination to allow easy management of the "big five" causes of machine failure.
In this article, we will discuss several concepts in combining oil analysis and vibration analysis to manage the dependability of typical mechanical equipment.
Take a sample of the oil moving to the bearings to confirm that it is clean, dry, and healthy. At the same time, you can collect data for vibration analysis to keep track of the status of the individual bearings. On each bearing's individual return lines, conduct sampling when a failure is identified using vibration analysis or other monitoring equipment. Particle microscopy is commonly used by experts to assess the type and severity of an occurrence. This helps with planning and scheduling, prioritization, and cause analysis.
For proactive management over the fundamental causes of mechanical wear and failure, vibration analysis and oil analysis are essential. Gear tooth wear and gear tooth fracture are the most typical failure mechanisms. Vibration measurement of the gear mesh frequency will always reveal a fractured tooth. When it comes to identifying contact fatigue, abrasion, and adhesive wear, oil analysis gives a great resolution.
Grease analysis can identify mixing, grease degradation, and wear particles thanks to the introduction of sampling instruments.
Pumps, like paper machines, contain rolling element bearings, making vibration analysis a natural fit. Sampling sump-lubricated systems frequently entail an oil drain, which can be difficult when the pump is running. For these systems, you can schedule oil drains and control contamination using statistical sampling. You can add valves on pumps to sample on-condition to help in troubleshooting just like in paper machines.
Vibration analysis is the principal condition monitoring method for grease-lubricated electric motors, whereas oil analysis is the primary condition monitoring tool for reciprocating combustion engines. Because engines emit so many vibrations, traditional vibration analysis is inefficient. Oil analysis is ideal for this application for a variety of reasons. To begin, watch the combustion process for excessive soot creation and lubricant fuel dilution.
Hydraulic systems take many diverse shapes and applications and they are the hardest to categorize. Speeds and loads vary depending on the application and duty cycle of the machine. If we can get a return-line sample before the filter, oil analysis is usually the leading technique for hydraulic systems. Vibration analysis isn't suitable for checking the health of cylinders or axial piston pumps.
Pillow Block Bearings
The Grease-Thief sampling method aids in the resolution of some of the problems associated with oil analysis. Because pillow block bearings are primarily rolling element bearings, they provide a problem. Because of the low speed, vibration analysis is difficult to detect until late in the failure process. Similarly, because they're grease-lubricated, getting a representative sample is difficult, which makes oil analysis difficult. For a consultation, you can contact our Engineers here.
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