Hydraulic Oil Quality Requirements
Hydraulic systems such as automobiles and construction mechinery use hydraulic oil as the working medium. In such hydraulic system, the flow rate of the oil is not large and the pressure is high. So it called static pressure transmission.The quality of hydraulic oil will greatly effct the working reliability and service life of the hydrualic system. Generally，the quality requirements for hydraulic oil are as follows:
Approprita viscosity and good viscosity-tempreture performance to ensure accurate, sensitive transmission of power under changing operating temperatures and to ensure proper lubrication of hydraulic components.
It has good rust resistance and oxidation stability, and it is not easy to oxidize and deteriorate under high temperature and high pressure conditions, and has a long sevice life.
It has good anti-foaming property, so that the foam produced by the oil under the working condition of constant stirring of the machine is easy to disappear to stabilize the power transmission and avoid the accelerated oxidation of the hydraulic oil.