FIELD: measurement technology; test equipment.
SUBSTANCE: method intends for inspection of rolling bearings, plain bearings and bearing units in instrument engineering, mechanical instrument engineering and electric machine engineering. One ring of bearing is loaded with permanent radial force and the other one is brought into oscillatory motion with specified frequency and amplitude by means of electro-mechanical system made of sync electric motor provided with active rotor and with two windings on stator. One winding is connected with dc source and the other one is connected with ac source. Alternative current is measured in second winding. Angular speed of oscillations of rotor is measured additionally and equivalent dissipative factor is calculated as product of constitutive factor of electric motor and relation of average meaning of current value product during period by speed to average square speed within the period.
EFFECT: improved precision of measurement.
1 dwg
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