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Improper Grounding Problems During Welding
Improper grounding during welding caused water contamination and electrical current issues, leading to a bearing failur…
Fretting Corrosion
Fretting corrosion is wear and corrosion caused by repetitive micro-motion between surfaces, often due to vibration, th…
Ultrasound Analysis for Low-Speed Bearing Diagnostics - Listen Yourself
Ultrasound analysis of a low-speed bearing reveals periodic high-amplitude pulses and irregular spikes, suggesting a po…
Gearbox Failure with Motor Mechanical Loosenesss Case Study
Vibration analysis revealed structural looseness in the motor and a pitted/cracked/worn gear fault in the first stage o…
Belt Conveyor Gearbox Misalignment and Bearing Wear
Increasing activity at 2x and 3x gear mesh frequencies in a belt conveyor gearbox indicates potential misalignment and …
Paper Machine Bearing Failure Case Study
Failure detection by trend analysis and vibration spectrum
Large Fan Units Imbalance Case Study
Two large fan units with elevated velocity levels and signs of imbalance were identified during a client sweep. JPS Rel…
Screw Compressor High Pass Frequency Vibration
High vibration levels in a screw compressor after overhaul were traced to oil injection restriction, mechanical valve i…
Paper Mill Early Signs of Gearbox Failure
Online condition monitoring system detected early signs of gearbox failure at a paper mill. VITS Ltd. analyzed the data…
Bearing Ball Pass Frequency of Outer Race Fault Case Study
APSA team identified a BPFO fault in a vibration inspection. The fault was characterized by high-frequency impacts, a d…
Air Screw Compressor Mis-Diagnosis and Real Diagnosis Case
A client’s air screw compressor was misdiagnosed as needing a full overhaul due to screw wear. A second opinion reveale…
Motor DE Bearing Failure for Electric Motor
Vibration measurements during commissioning revealed bearing failures in four out of twelve new motors, likely due to i…
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