What is the role of a hydraulic oil filter in a hydraulic system?

　　Why are hydraulic filter elements crucial in hydraulic systems? Hydraulic oil serves as the direct working medium of the hydraulic system, transmitting power and operational control to every component. The primary factors that cause hydraulic oil degradation include the hydraulic oil tank, hydraulic oil filter elements, and contaminants generated by wear in hydraulic parts.

　　Hydraulic oil filters are primarily installed in hydraulic systems—including the suction line, pressure line, return line, bypass, and individual filtration systems.

　　The hydraulic oil tank serves as the reservoir for hydraulic fluid, providing heat dissipation and cooling, allowing impurities to settle, and enabling the removal of air from the hydraulic system.

　　First, insufficient hydraulic oil supply can cause the hydraulic oil pump to run dry. Running dry leads to inadequate oil delivery from the pump, directly resulting in increased wear and ultimately causing the pump to fail prematurely and become irreparably damaged.

　　Secondly, cavitation can also introduce air into the hydraulic oil, increasing its compressibility and reducing the volumetric efficiency of components like the hydraulic pump. Meanwhile, the air trapped in the hydraulic oil gets compressed during operation of the pump and working devices, leading to the formation of cavitation bubbles that can damage sealing surfaces, causing rapid wear and tear on both the pump and the working equipment.

　　A common preventive measure is to regularly check the hydraulic oil in the tank and ensure that the oil level remains within the normal range.