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Advantages of clean lubrication
Prediction of bearing wear due to shaft voltages in electrical machines
achieved aerostatic air bearing air lubrication application axial load ball bearing ball set bearing current bearing impedance bearing type bearing wear bore bronze contamination control contamination level damage debris diameter dry bearing effect electric end covers engine failure fatigue Ferrographic filtration flux friction value graphite grease grease lubrication helical raceway Homopolar increase inner race linear movement load carrying lubricant film thickness lubricated bearings machine maintenance measurement mechanical MIMechE motor oil film oil viscosity operating outer race Pampus particles plain bearings porosity porous metal bearings preload pressure PTFE rates of linear reduced resistance Rolling Bearings rolling element bearings rolling interfaces rotational speed rotor running clearance running temperature shaft voltage shock pulse shown in Fig single ball nuts speed range norm spherical bearing spindle starvation technique thermal thermal conductivity thermocouple thrust bearing Tribology type of bearing typical unit ball vibration viscosity wear rate