Rolling bearing dynamics and diagnostic

Questions connecting the problems of the dynamics analysis, identification and diagnosing the systems with the problems of changing their during manufacturing and operation are considered. Theoretical as-pects of this problem are presented as diagnosing the systems reodynamics. The systems are the objects consisting of a great number of interworking elements such load-bearing ones including elements of con-struction, connection, transfer, engines, etc. Elements mutual interaction and their relative transfer cause vibrations which are significantly amplified if defects are available. It primarily concerns the systems with rotating details, for instance, reducers. Supports and gear wheels are the basic sources of vibrations in reducers. Vibration parameters, and their spectral characteristics in particular, may serve as information signals about internal unobserved processes.