3404260580 Hitachi Loader Oil Seal for ZW310-6 

The original Hitachi loader oil seal with part number 3404260580 is a key seal designed specifically for the Hitachi ZW310-6 wheel loader. According to the accessory numbering rules and market supply information, this oil seal is mainly used for sealing the rotating shaft of the engine, transmission, drive axle, or hydraulic system of this model, such as crankshaft front/rear oil seals, half shaft oil seals, etc. Due to the varying specifications of oil seals used in different assembly positions, their specific installation locations must be clearly defined before procurement.

As an original oil seal, 3404260580 adopts high-quality materials and precision manufacturing processes to ensure long-term reliable operation under harsh working conditions such as heavy load, high temperature, and high dust. Its typical structure is that the metal skeleton is covered with oil resistant, high temperature resistant and anti-aging synthetic rubber (such as fluororubber FKM or nitrile rubber NBR). The sealing lip is designed with a main sealing lip and a dust-proof lip, which can effectively prevent the leakage of lubricating oil and prevent the invasion of dust, mud and other pollutants. The oil seal is equipped with a built-in spring ring, which provides continuous and uniform radial pressure for the sealing lip, compensates for minor wear and eccentricity of the shaft neck, and maintains dynamic sealing effect.

The core of oil seal maintenance lies in preventive inspection, standardized installation, and timely replacement. Daily inspection: It is recommended to check the joint surface and shaft end of each assembly (especially the engine oil pan, gearbox, and drive axle housing) for oil stains or dripping marks every 250 working hours. This is the most direct manifestation of oil seal failure. Replacement timing: When continuous leakage, hardened sealing lip rubber, cracking, wear, or spring detachment is found, it should be replaced immediately.