The hydraulic oil often contains granular impurities, which will cause the wear of the relative moving surface of the hydraulic components, the sticking of the slide valve, the blockage of the orifice, etc., which will greatly reduce the working reliability of the system. A certain precision stainless steel is installed in the system. Hydraulic filters and filters are necessary measures to ensure the normal operation of the system.

The stainless steel hydraulic filter element is made of single-layer or multi-layer metal mesh and filter material. The number of layers and the mesh number of the wire mesh are determined according to different conditions of use and purposes. The overall filter element should have high concentricity, high pressure and good straightness. It is made of stainless steel without any burrs to ensure a long service life. Considering the self-priming performance of the pump, coarse filters are generally used for oil suction filters.