ANALYSIS OF TRIBOLOGICAL CHARACTERISTICS OF THE RADIAL SLIDE BEARINGS

Machine elements, where tribological phenomena are more pronounced, are slide bearings. Tribology is a science that analyzes friction, wear and lubricate and the mutual action of the surfaces in contact when moving one part of the machine to the other. In this paper the characteristics of the radial slide bearings from the tribological aspect will be analyzed. Since the friction is unavoidable on the sliding bearings, then all the possible impacts will be analyzed in the paper, respectively the analytical expressions and graphic representation of the friction coefficient will be presented, which represents the component by which the best interpretation of this phenomenon. Friction as a tribological characteristic of radial sliding bearings is an unavoidable and undesirable phenomenon. Therefore, our tendency is that this coefficient has the smallest value on these bearings. In the paper, the impacts on friction coefficient are presented in detail, such as the influence of viscosity of the lubricant, normal load, number of rotations, etc. Also in the paper are explained the types of contact surfaces and the analytic expressions for their calculation. Since the viscosity of the oil for lubricant bearings is of particular importance, the effects on this viscosity are analyzed in the paper.