The main function of the excavator hydraulic oil filter element is to filter out impurities in the hydraulic oil, ensuring the normal operation of the hydraulic system.

The hydraulic oil filter element is a key component installed in the hydraulic system’s filter and oil filter machine, used to remove metal powder and other mechanical impurities generated from the wear of various components in the hydraulic system, keeping the oil pathways clean and extending the lifespan of the hydraulic system. These filter elements are typically made from materials such as stainless steel woven mesh and sintered mesh, with filter media including fiberglass filter paper and synthetic fiber filter paper. Depending on different usage conditions and purposes, the design of the filter element may include single-layer or multi-layer metal mesh combined with filter media to ensure the performance and longevity of the filter element.

The application range of hydraulic oil filter elements is broad. Based on their installation position in the hydraulic system, they can be classified into suction line filter elements, pressure line filter elements, and return line filter elements. The suction line filter element primarily protects the hydraulic pump, with a filtration precision generally ranging from 100 to 180 μm. The pressure line filter element not only protects the downstream components but also provides good protection for the hydraulic pump through efficient purification of the oil, with a filtration precision of 5 to 10 μm.

Regularly replacing the hydraulic oil filter element is one of the key steps to maintaining the efficient operation of the excavator. The replacement and maintenance of the filter element are crucial for preventing oil contamination and maintaining oil cleanliness, as a significant proportion of hydraulic system failures are caused by impurities mixed in the oil. Therefore, keeping the hydraulic oil clean is essential for ensuring the normal and efficient operation of the hydraulic system.‌