Position error occurrence in self balancers used on rigid rotors of rotating machinery

Abstract

A self balancing method is presented which utilizes freely moving balancing bodies rotating in unison with a rotor to be balanced. Because of resistance to motion, eccentricity of race over which the balancing bodies are moving and the influence of external vibrations, it is impossible to attain a complete balance. Each one of these three factors has been analyzed and their influence on the magnitude of balancing body position errors determined. As a result of some inaccuracy in positioning the balancing bodies, certain residual unbalance always remains.