3240022240 Original Loader Parts Gearbox Gear for ZW550  

3240022240 is the standard part number for Hitachi's original loader gearbox gears, designed specifically for multiple wheel loaders from Hitachi. It is widely compatible with Hitachi ZW series loaders, including mainstream models such as ZW140, ZW180, ZW220, ZW250, ZW310, ZW330, ZW370-G, ZW550-G. This part number is the universal code for original gear accessories. Users need to accurately verify the specific model, year of manufacture, and serial number of the gearbox/drive axle when purchasing to ensure a complete match
 

As the core transmission component of the gearbox, this gear is made of high-quality low-carbon alloy steel (such as 20CrMnTi, 20CrMo) through advanced processes such as carburizing and quenching, precision grinding, etc. The tooth surface hardness is as high as HRC 58-62, and the core maintains good toughness, with extremely high bending fatigue strength and contact fatigue strength. The gear parameters have been precisely calculated and optimized, and the modulus, number of teeth, pressure angle, etc. all meet national standards, ensuring smooth meshing, high transmission efficiency, and low noise.
 

In daily life, the lubricating oil level and quality of the gearbox should be checked through the observation hole or dipstick, and the gear oil that meets the specifications should be replaced according to the maintenance manual's prescribed cycle (usually every 500-1000 working hours), and the metal shavings on the magnetic drain plug should be cleaned. Regularly monitor the sound of gearbox operation, and abnormal noise is often a sign of wear or poor meshing. It is recommended that professional technicians open the box and inspect the gear meshing, tooth surface for pitting, peeling, cracks, and abnormal wear every 2000 hours of work or every year, and measure the tooth flank clearance.