ABSTRACT: The article deals with the use and applicability of modal analysis methods in of assessing the durability indicators and exploitation stability for the mechanical structures and systems in driver groups of a belt-conveyor. The methods of modal analysis gave the possibility to analyse the behaviour and parameters of a dynamic system through pure static research methods and techniques. Through this methodical treatment, some structural changes and reactive support are researched, along with their influence on the dynamic behavior of the support frames and driver groups from the driver stations of a belt conveyor. Dynamic models for the support frame of the driver group and station are developed estimating the stability of the frame towards bending vibrations. From that particular modelling, diagrams and result in a tabular form are presented.