The main function of the hydraulic filter is to retain undissolved foreign bodies in the hydraulic oil. The purpose of a hydraulic filter is therefore to reduce the wear on moving parts caused by dirt and thus increase the service life of the corresponding hydraulic systems.
The contaminated and dirty hydraulic oil is fed to the filter housing via the inlet connection. There it meets a filter element which is usually made of paper, cellulose or glass fiber. Depending on the design of the filter fineness, a defined particle size is separated in the hydraulic filter element. The filtered and cleaned hydraulic oil flows out of the filter on the clean side and is fed back into the hydraulic system.