The hydraulic main pump used in the ZX140W-3, ZX170W-3, and ZX210W-3 is a high-performance pump designed to meet the demanding requirements of heavy-duty construction applications.
It is a variable displacement axial piston pump, which means that it can adjust the flow rate and pressure according to the load and operating conditions.
The pump has a maximum operating pressure of around 35 MPa (350 bar) and a maximum flow rate of approximately 220 liters per minute. This high-pressure and high-flow capacity enable the excavator to perform a wide range of tasks efficiently, such as digging, lifting, and loading heavy materials.
The hydraulic main pump is driven by the engine of the excavator through a power transmission system. It is designed to withstand the continuous demands of heavy-duty operations and has excellent durability and reliability. The pump is constructed using high-quality materials and undergoes rigorous testing to ensure its performance and longevity.
To ensure efficient operation and precise control, the hydraulic main pump is equipped with advanced technologies.
It incorporates a load-sensing system that constantly monitors the hydraulic pressure and adjusts the pump output accordingly. This feature allows for better energy efficiency and reduces unnecessary strain on the engine, resulting in lower fuel consumption.
Furthermore, the hydraulic main pump is equipped with a hydraulic servo system that provides smooth and responsive control of the excavator's movements. This system ensures precise positioning and operation of the boom, arm, and bucket, enhancing productivity and operator comfort.
The pump also features built-in protection mechanisms to safeguard against potential damage. It has a pressure relief valve that prevents excessive pressure buildup, protecting the pump and other hydraulic components. Additionally, a filtration system is integrated into the pump to ensure clean hydraulic fluid circulation, reducing the risk of contamination and maintaining the pump's performance.
Maintenance and servicing of the hydraulic main pump are crucial for its longevity and optimal performance. The pump is designed for easy access during maintenance operations, allowing technicians to inspect and service it efficiently. Regular checks and maintenance, such as oil changes and filter replacements, are recommended to keep the pump in top condition.
