The main characteristics of the efficiency of the use of mass and serial production machines, as well as many technical products, are their performance and cost, as determined in the specific calculation per production unit. Production cost depends on the cost of production (purchase) and ensuring the serviceable condition, on the expenses rate of operating materials. In this regard, this paper proposes methods for determining the total average resource of the machine, its aggregation, subassembly, parts, spare parts, the total costs of wear of the machine for the full resource, as well as the cost of maintenance and compensation for damage due to wear for a full resource through cycles of exploitation, in which the optimization criterion is the minimum overall average unit cost of production and ensuring the serviceable condition of machinery at constant performance.

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