RCM for Gearboxes

We facilitate the RCM analysis defining gearbox functions (transmit torque at specified ratio and efficiency, contain lubricant, support shaft loads) and classifying the gearbox population by type and criticality. Failure modes are analyzed per gear type: helical (tooth surface fatigue, tooth root bending fatigue, scuffing), bevel (tooth contact pattern deviation, axial thrust bearing overload), worm (thread surface wear, thermal rating exceedance), and epicyclic (planet bearing failure, ring gear tooth fatigue, carrier pin wear). Common modes include oil degradation, seal wear, and bearing defects. The JA1011 decision logic selects tasks: vibration analysis with gear mesh frequency monitoring for tooth damage, oil analysis with ferrography for wear particle characterization, oil condition monitoring (TAN, viscosity, moisture) for oil degradation, and thermographic surveys for cooling system effectiveness. Scheduled restoration is applied where no effective on-condition task exists — such as seal replacement where external leak observation is the only detection method. Failure-finding tasks are defined for any protective devices (pressure relief, temperature shutdown).