4331920 Excavator Filter Element for EX1900-6

Part number 4331920 is an original filter cartridge specially designed by Hitachi for the EX1900-6 ultra large mining hydraulic excavator. Its precise metal structure and sturdy end caps are typical features of heavy-duty equipment specific filter cartridges. Its universal model mainly covers the EX1900-6 model, which is also applicable to large equipment of the same series with the same hydraulic or lubrication system design, such as EX1800-6 and EX2000-6. As the core filtering component of the original factory, the interface size, filtering accuracy, and flow rate of the high-pressure circuit of the equipment are completely matched. It is strictly prohibited to use filter cartridges with mismatched sizes to avoid filtration failure, system pollution, or abnormal pressure, which may cause expensive component damage.

This product is a metal sintered mesh high-pressure filter element, with a silver gray cylindrical body. It is made of multiple layers of stainless steel wire mesh sintered at high temperature to form a uniform and stable microporous filtration structure. The filtration accuracy is high (usually 10-25 microns), the pollutant holding capacity is large, and it can withstand high-pressure impact. Both ends are precision machined black (or silver) metal end caps, providing a sturdy sealing surface and structural support. This metal filter material has the characteristics of high strength, high temperature resistance, and corrosion resistance, and is suitable for pressure pipelines (such as return oil filters, pilot filters) or independent lubricating oil circuits in hydraulic systems. Its core function is to provide durable and reliable protection for the system under harsh mining conditions.

Inspection and cleaning cycle: For this type of metal filter element, it is recommended to remove it for inspection every 500 working hours. Whether to clean can be determined based on the system pressure difference alarm or the degree of surface contamination of the filter element. Cleaning method: It is necessary to use specialized cleaning agents (such as kerosene, diesel) and soft bristled brushes to gently scrub along the crease direction, or use an ultrasonic cleaning machine for deep cleaning. It is strictly prohibited to use metal tools to scrape or high-pressure water guns to directly charge, in order to avoid damaging the sintered structure. After cleaning, it needs to be dried with compressed air.