3242020120 Loader Gear Set for ZW370 

The Hitachi original loader gear set (universal part number: 3242020120) is the core component of the Hitachi wheel loader transmission system. This gear set is mainly suitable for multiple wheel loaders from Hitachi, with common models including ZW140, ZW180, ZW220, ZW250, ZW310, ZW330, ZW370-G, ZW550-G, etc. It is usually applied to key transmission parts such as the gearbox, drive axle, or wheel reducer of loaders. Due to the fact that gear sets are precision fitting components, their adaptability requirements are extremely high.

This gear set is a transmission system composed of multiple precision gears (which may include sun gears, planetary gears, ring gears, etc.), and is the core of power transmission. Its main function is to decelerate and torque the power output by the engine or motor, and change the direction of power transmission, ultimately driving the wheels or working devices. As an original component, its gears are forged from high-strength alloy steel (such as chromium molybdenum steel, nickel chromium molybdenum steel) and undergo high-precision heat treatment and processing techniques such as carburizing, quenching, and grinding to ensure that the tooth surface has extremely high hardness and wear resistance, and the tooth root has excellent bending fatigue strength.

The maintenance core of gear sets lies in ensuring good lubrication and regular condition monitoring. It is necessary to strictly follow the provisions of the equipment maintenance manual, use the specified model and grade of gear oil, regularly check the oil level and quality, and replace the lubricating oil and filter on time. High temperature, heavy load, and pollution are the main causes of lubricant failure, which can directly lead to abnormal gear wear.