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The main purpose of this research is to determine a suitable class fraction of the metal composition of the ore fragments and the maximum detection of the minerals in them which is accomplished through the crushing and milling processes. In these processes, the product is being shattered by the action of external mechanical forces. The shattering processes are most energy-intensive and expensive in most factories - 35-40% (sometimes up to 60%) of capital and operating costs. Also, crushing has lower energy absorption than milling. Therefore, the aim is to achieve optimal crushing and definitely little use of the milling processes. Despite the reduced energy consumption, the cost of maintaining the crusher components is high. In the present study, a new method for determination of the forces and reactions in a “KUBRIA” 210/35 cone crusher was used to calculate and to set the boundary conditions in the static examination of the main “rolling cone” knot by using “Solid Works” software. 

cone crusher, crushing strength, theoretical analysis, finite element model.