ANALIZA WPèYWU PARAMETRÓW MOCOWANIA èOYSK WIECOWYCH NA ICH NONO STATYCZN

Summary The paper presents a numerical analysis of caterpillar excavator’s chassis model with three-row slewing bearing. The overall discrete model is made of eight-nodal, cubic elements, solid type. The nonlinear characteristics in the process of rolling elements modeling is used as well as truss-type elements. Coefficient of friction is applied to appropriate surfaces of rings and support elements. Screws are modeled by beam elements simulating mandrel and the head is modeled by rigid. The impact of the pre-tension’s strength of mounting screws in three strength classes for extreme resistance of slewing bearing’s external load is taken into consideration in this paper. The given characteristics of bearing carrying capacity, loss of contact stress distribution on the surfaces of the bearing rings and built for maximum tilting moment M.