Abstract
The paper presents the results of research on tribological parameters of friction pairs at lubrication with hydraulic fluid and mineral oil. Friction pairs BrPh6,5-0,15 and Hardcarb-TP with steel 40Х at lubrication with hydraulic fluid AMg-10 and mineral oil I20A have good tribological properties. At load 2,003 MPa, temperature 20 °C and speed 2,5 m/s the coefficient of friction does not exceed the value 0,1. It is not recommended to use hydraulic fluid AMg-10 at contact pressure 3500...5500 MPa, because the coefficient of friction is higher than 0.65. Industrial oil I20A provides low coefficient of friction 0.1-0.2 at these contact pressures.