4210224 Excavator Hydraulic Tank Strainer Filter for Hitachi ZX200-3G

The original hydraulic oil tank filter (part number 4210224) is a genuine hydraulic system filter component of the Hitachi ZX200-3G excavator. It is mainly used in the suction or return pipelines of the hydraulic oil tank of this model to filter out solid particle pollutants in the hydraulic oil. This filter is also widely used in Hitachi ZX210-3G, ZX230-3G, ZX240-3G, ZX270-3G and other 3G series medium-sized excavators. Its common numbers include b2221000000235, P502244, etc., which are its cross identification in Hitachi's original and third-party accessory systems. When placing an order, it is necessary to provide the complete model and serial number of the excavator for verification to ensure that it matches the pipeline interface size and system flow rate perfectly.

This product belongs to the specialized rotary hydraulic oil filter element for construction machinery, following the ISO 2941 hydraulic filter element standard. Its structure adopts multi-layer glass fiber folded filter paper, with a filtration accuracy of up to 30 µ m, which can effectively intercept metal debris, dust, and gum impurities in hydraulic oil. The main technical indicators include: rated flow rate ≥ 100L/min, initial pressure difference ≤ 0.2MPa, working temperature range 0-88 ° C, compressive strength ≥ 12MPa, and a bypass valve function (opening pressure difference of about 0.35MPa). When the filter element is blocked, it can automatically open to protect the system. The end cap and sealing ring of the original filter element are made of oil resistant rubber material, ensuring long-term reliable sealing under high pressure pulses.

It is recommended to replace the filter every 500 hours of work or every 6 months, and shorten it to 250-300 hours when dealing with dust, heavy loads, or using accessories such as crushers. Before replacement, turn off the engine and release the hydraulic system pressure, and operate in a cold state. When disassembling the old filter element, it is necessary to clean the sealing surface of the installation seat. Before installing the new filter element (4210224), a small amount of clean hydraulic oil should be applied to the sealing ring and manually tightened according to the torque specified in the maintenance manual (usually 25-35N · m). Regularly check the cleanliness of hydraulic oil (recommended to maintain NAS level 8 or below) and oil level, and clean the oil tank suction filter screen every 1000 hours of operation or when changing hydraulic oil. Regular replacement can effectively prevent abnormal wear and tear of hydraulic pumps and valve groups, ensuring stable operation of the system.