The gearmotor manufacturer should analyze any application with high inertia. This problem is especially important with self-locking right-angle gearmotors. Because the rotor and load are rigidly connected by the gear train, both must stop in the same time. In severe cases, momentary power failure may be all that is necessary for a high-inertia load to destroy the gear train. Overhung loads are applied to the output shaft of the gearmotor whenever the gearmotor is connected to the application by belts, chains, or gearing. Applications requiring cams, hoisting drums, or switches at the output shaft can also cause very high overhung loads on gearhead bearings. It is inherent in gearmotors that overhung load capacity decreases as delivered torque increases.
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