Vibration protection for rotating machinery

ROTATING machinery of all types is subject to damage when exposed to severe vibration caused by mechanical unbalance, or its equivalent, in the rotating element. Although electrical machinery has a good record in this respect, its freedom from vibration has been due largely to the degree of maintenance which it usually receives. Now, however, due to wartime restrictions, electrical and other machinery is often run under conditions which would not be permitted normally until after repairs had been made. When this is done, protective measures should be adopted where possible to prevent serious machine damages if the weakened part should fail.