The submitted paper analyses the check of operational capacity and of economic efficiency of the selected machines in case of the use of different types of oil, determination of mode of friction and of machine wear and specification of interval of oil change. The object of the paper is a machine park in the industrial company comprising of five machine tools. Particularly, it is the case of two grinding machines, two lathes and one milling cutter. Having been removed from the greasing systems, the oils were used to gain information on technical condition of the respective machines.
Science Journal 