Methodology for calculating the complete static carrying capacity of twin slewing bearing

• Guidelines for creating computational models of twin slewing bearing.
• Analysis of contact zone ball-raceway for adopted twin slewing bearing.
• Quick and comprehensive FEM model of twin slewing bearing.
• Method of determination a complete chart of static carrying capacity.
• List of all parameters for bearing analyzed and peculiarity of load.

Results of research work concerning a special design solution of slewing bearings which is a twin slewing bearing have been presented in this article. The twin slewing bearing has an 8-point contact zone ball-raceway which is considered in a cross section of bearing rings. Characteristic features of these bearings have been described. The main thesis of this work concerns the adaptation of modern computer methods for solving the structural design problems of twin slewing bearing. A two-stage research program including the analysis of local issues contact the contact zone ball-raceway and the global analysis concerning a static carrying capacity of the twin slewing bearing have been proposed. Calculations were performed by using the finite elements method (FEM), ADINA program, analytical Eschmann's formulas and classical mechanics equations. The models and calculation presented in this paper were performed and based on geometric and material parameters which have been defined for selected twin slewing bearing. The method of determining the profile curves of static carrying capacity for twin slewing bearing, including all components of the load was described fully.