Vibration analysis is a cornerstone of predictive maintenance. While spectra and waveforms provide data, case studies provide context. This document presents three real-world scenarios where vibration analysis identified root causes ranging from misalignment to bearing failure. Each case includes symptoms, data interpretation, and corrective actions.
Date: October 26, 2023 Prepared For: Reliability Engineering Team / Maintenance Management Subject: Summary and Key Findings from Practical Vibration Analysis Case Studies Practical Case Studies On Vibration Analysis Pdf
A dust collection fan in a cement plant was reporting high overall vibration (0.45 in/sec RMS). Operators noted a "humming" sound but no visible damage. Bearings were recently greased. Date: October 26, 2023 Prepared For: Reliability Engineering
The team performed a "hot alignment check." They shut down the pump, took alignment readings immediately (while hot), and discovered a 0.025" offset. They shimmed the engine mounts for the hot condition (allowing cold misalignment on startup) and the vibration disappeared. A dust collection fan in a cement plant
