Hitachi K5V80DTP-YXSKR-9K00 main pump assy ZX160W 9227147 hydraulic main pump

The hydraulic pump converts mechanical energy into hydraulic energy to power the excavator's hydraulic system. When the engine drives the pump shaft to rotate, the internal pistons or gear sets create oil suction and compression processes, forming a high-pressure oil flow. Belparts hydraulic pumps feature variable displacement design that automatically adjusts output flow according to load requirements, achieving high energy efficiency.

Electro-Hydraulic Pumps: The Future of Precision Control

Traditional hydraulic pumps rely on mechanical or hydraulic signals for adjustment, while electro-hydraulic pumps use electronic control units (ECUs) and proportional solenoid valves for enhanced precision. These "electronified" pumps can:

• Deeply integrate with machine control systems for smarter power matching

• Optimize pump output characteristics in real time based on actual working conditions

• Provide failure diagnosis and condition monitoring functions

• Enable remote parameter adjustments and software updates

Hydraulic Pumps in Hybrid Systems

As environmental requirements tighten, hybrid excavators are gaining traction. In these systems, hydraulic pumps may integrate directly with electric motors, forming combined electro-hydraulic drive units. Such designs can:

• Recover braking energy for battery storage

• Optimize engine operating points to reduce fuel consumption

• Provide electric auxiliary power for enhanced peak performance

New Materials and Manufacturing Processes

To improve performance and reliability, hydraulic pumps increasingly incorporate:

• High-strength, lightweight materials reducing moving part inertia

• Ultra-precision machining decreasing internal leakage

• Advanced coating technologies enhancing wear resistance

• Simulation-optimized designs lowering noise and vibration

These advancements are making hydraulic pumps more efficient, quieter, and more durable—elevating overall excavator performance and user experience.

GUANGZHOU BELPARTS ENGINEERING MACHINERY LIMITED founded in September 2013, loed in the engineering machinery market in Guangzhou, China. At present , we have one shop, one warehouse and one office as well as a professional team for purchasing, selling, packing, shipping and after-sale service.

Our main products are Excavator Hydraulic spare parts, Hydraulic pump, Swing motor, Travel motor, Final drive, Swing gearbox, Travel gearbox, Control valve,Monitor,Controller, Hydraulic cylinder and other hydraulic items with genuine and aftermarket quality. Until now, our products enjoy high reputation all over the world and have been exported to more than 150 countries and regions, spreading all over the Middle East, Southeast Asia, Africa, North America, South America, Europe and Oceania with its own brand "Belparts" are widely acclaimed by foreign customers.

In February 2023, Belparts Yunnan Tourism Team Building

In April 2024, Belparts participated in the Brazil Construction Machinery Exhibition and visited local clients in Brazil.

In April 2024, Belparts participated in the French Construction Machinery Exhibition and visited clients in France and Spain

In May 2024, Belparts Travel Thailand