Research on the Possibility of Replacing Oil with Water in Hydrostatics Units of Machine Tools

This paper deals with the possibility to replace the mineral oil with water in the hydrostatic units of machine tools. With this aim in view we try to make a technical-economic comparison between the hydrostatic drive that uses mineral oil in the range H38 - H46 and the drive with untreated water. Two simple units were taken for comparison, in principle, which use as hydraulic energy source one constant flow pump (qP = 4 cm3) for the actuation of two consumers and one constant flow pump (qP = 20 cm3) for making the hydrostatic suspension of the saddle of an AFP type machine.