Thermal Relay Nuisance Tripping: A Root Cause Analysis
Thermal relay nuisance tripping can lead to unplanned downtime and increased maintenance costs. A root cause analysis of a Siemens 3SU1102-6AA40-3AA0 thermal relay identified ambient…
Analysis of the Causes
Expert articles in root cause analysis: investigation of failures and prevention strategies.
Cause of increased ball-screw backlash: Preload loss, contamination and wear of the oil
Increased backlash in a REXROTH R901324450 ball-screw can be caused by preload loss, wear fluid loss and contamination. A systematic analysis and preventive measures are…
Pump cavitation analysis: NPSH assessment and diagnostics using vibration analysis
1. Introduction: The symptom of failure In industrial plants in the DACH region, centrifugal pumps are central components for the transport of liquids. A frequently…
Chain Drive Elongation and Sprocket Wear: Root Causes and Measurement Techniques
Chain drive elongation and sprocket wear lead to unexpected downtime and increased costs. This article provides a forensic analysis of the root causes and practical…
Hydraulic cylinder seal failure: root cause analysis - contamination, misalignment, pressure fluctuations
A hydraulic cylinder shows a sudden loss of fluid. The causes are contamination, misalignment or pressure fluctuations. The analysis with Ishikawa and 5 Whys shows…
Root Cause Analysis: Encoder Signal Loss - Cable Insulation, EMI and Connector Degradation
Encoder signal loss can be caused by connector degradation, EMI, or vibration. UNITEC-D offers certified components for quick and preventive solutions.
Root Cause Analysis of Hydraulic Cylinder Failure: Contamination, Alignment and Pressure Spikes
A failure of the Parker 937859Q hydraulic cylinder caused a production halt. The analysis identified contamination, inaccurate alignment and pressure spikes as the main causes.…
Gear Tooth Pitting and Spalling: Root Cause Analysis and Prevention Strategies
Gear tooth pitting and spalling in Telemecanique LC1 D1810 motor starters are linked to lubrication degradation, misalignment, and material fatigue. This article provides a root…
Root Cause Analysis of Oil Leakage in Reducers: Seal Selection, Ventilation and Assembly Errors
Oil leakage in reducers can indicate critical failures such as obstructed ventilation, inadequate seals or assembly errors. Root cause analysis reveals that high internal pressure…
Root Cause Analysis of Pneumatic Valve Sticking: Contamination, Moisture, and Lubrication Failures
Pneumatic valve sticking is a critical failure mode caused by contamination, moisture, and lubrication failures. This article provides a systematic analysis and practical solutions to…
Root Cause Analysis: Encoder Signal Loss - EMI, Shielding and Connector Degradation
Encoder signal loss is caused by EMI, connector wear, and cable degradation. A technical analysis reveals root causes and practical solutions. Consult the UNITEC-D E-Catalog…
Root Cause Analysis: Pitting and Spalling in SKF 402121 Industrial Reducer Gears
1. Introduction In the manufacturing sector, the reliability of machinery is a critical factor for operational continuity. The unexpected failure of a gear reducer can…