Root Cause Analysis: Chain Drive Elongation and Gear Wear
Forensic analysis of a chain drive with premature elongation and sprocket wear. Root causes, measurements according to UNE/EN standards, and a corrective action plan are…
Cause Analysis
Expert articles on root cause analysis: failure investigation and prevention strategies.
Thermal Relay Nuisance Tripping: Root Cause Analysis and Prevention Strategy
Thermal relay nuisance tripping in industrial motor systems is often caused by ambient temperature, load profile, or incorrect relay sizing. This article presents a forensic…
Root Cause Analysis of Hydraulic Cylinder Seal Failure: Contamination, Misalignment and Pressure Peaks
The failure of the seal of a hydraulic cylinder SKF NCF 2944 V may be due to contamination, misalignment, or pressure spikes. A root cause…
Root cause analysis of failures in couplings: incorrect alignment, torque overload and fatigue
A sudden failure in the transmission system has caused an interruption. The analysis has identified incorrect alignment, torque overload and material fatigue as main causes.…
Root Cause Analysis of Pitting and Spalling on Gear Teeth: Lubrication, Alignment and Material Fatigue
A Festo gear system 151192 failed due to pitting and gear tooth breakage. The analysis revealed that lack of lubrication, high temperature and lubricant contamination…
Root cause analysis of servo motor overheating: sizing errors, cycle of operation errors and cooling failure
Overheating of an ABB 3AFE64008366 servo motor can be caused by sizing errors, duty cycle miscalculation or cooling failure. Rigorous analysis and preventive maintenance are…
Root cause analysis of the overheating and burning of the solenoid valve coil: duty cycle, voltage and thermal management
Coil burnout of a solenoid valve is a critical failure that can interrupt the functionality of an industrial automation system. The analysis has identified the…
HYDAC HDA 3840-A-350-124 Hydraulic Cylinder Oil Leakage Root Cause Analysis: Seal Selection, Venting, and Installation Mistakes
Oil leakage in HYDAC HDA 3840-A-350-124 hydraulic cylinder causes loss of efficiency and risk of non-compliance. Using the correct seals, ventilation and installation will ensure…
Root cause analysis of a burning solenoid coil: load cycling, voltage and thermal management
Solenoid coil fire in an Allen Bradley 1786-XT is analyzed with respect to load cycling, voltage and thermal management. Accurate diagnostics and preventive maintenance are…
Root Cause Analysis: Encoder Signal Loss — Cable Shielding, EMI and Connector Degradation
A signal loss from the encoder may be caused by shielding wear, corrosion on the connector, and exposure to EMI. The analysis reveals that lack…
Analysis of VFD-induced bearing currents: Vibration analysis, EDM damages and mitigation strategies
VFD-induced bearing currents lead to increased bearing temperatures and EDM damages. A systematic analysis identifies the causes and provides measures for prevention. Switch to UNITEC-D…
Premature Failure of Spherical Roller Bearings: Root Cause Analysis and Prevention
Premature failure of spherical roller bearings can lead to costly downtime. This article presents a forensic analysis of a Heidenhain ROQ425-512 bearing failure, identifying key…