RT Journal Article SR Electronic A1 Popov, Alexey A1 Khramenkov, Mikhail T1 Effect of Hydraulic Oil Entering the Cutting Fluid on the Tool Life and Roughness in Turning of Stainless Steel JF Manufacturing Technology Journal YR 2019 VO 19 IS 4 SP 664 OP 667 DO 10.21062/ujep/352.2019/a/1213-2489/MT/19/4/664 UL https://journalmt.com/artkey/mft-201904-0021.php AB The use of cutting fluid should positively influence on the quality of the machined surfaces and durability of cutting tools. However, during the machining the oil from the hydraulic system of the machine often gets into the cutting fluid, which can alter the properties of the cutting fluid. In scientific literature there is no information about the effect of the hydraulic oil entering the cutting fluid on the tool life and roughness in turning. In this regard, at the laboratory of the Department of Machining and Assembly of the Technical University of Liberec, there has been conducted a study to ascertain the effects of hydraulic oil getting into different types of cutting fluids during the turning of stainless steel.