Guangzhou Gaogeng (COGENG): Your One - Stop Shop for Excavator Parts and Small Home Appliances

  Types of Excavator Piston Pumps: Axial vs. Radial Designs and Their Construction Applications Understanding the hydraulic heart of your excavator—and how to choose the right replacement pump. The hydraulic pump is the heart of every excavator. It converts mechanical energy from the engine into hydraulic fluid power that drives the boom, arm, bucket, and swing functions. Among the various pump types,  piston pumps  dominate medium- and large-sized excavators because of their high efficiency, durability, and ability to handle high pressures—typically 350 to 450 bar in modern machines. But not all piston pumps are the same. In the construction equipment world, excavator piston pumps are primarily classified into two mechanical arrangements:  Axial Piston Pumps  and  Radial Piston Pumps . This article breaks down how each type works, where they are used, and what that means for your replacement parts procurement. For a full range of excavator hydraulic pump c...

  Separate vs. Integrated: A Technical Comparison of Solenoid Valves and Hydraulic Valves for Heavy Equipment Understand the key differences to make smarter maintenance and procurement decisions for your excavator fleet. In the hydraulic systems that power modern excavators—from compact units to 30-tonne machines—the marriage of electronic control and hydraulic power happens at the valve. Specifically, at the interface between  solenoid valves  (the electrical actuators) and  hydraulic directional control valves  (the fluid power distributors). Engineers face a fundamental design choice: should the solenoid valve be a  separate, bolt-on component  or an  integrated, cartridge-style unit  within the hydraulic valve body? Both approaches exist across the Sumitomo, Hitachi, and Kobelco excavators that owners rely on daily. Understanding the trade-offs helps equipment managers stock the right spare parts, diagnose problems faster, and avoid costl...

  In addition to the common components in the hydraulic system, there are some other important mechanical components that are worthy of understanding.   Engine : The engine of the excavator is the core component of power. It is responsible for driving the hydraulic pump and other mechanical parts to provide the required power and energy for the excavator. Gear transmission system: The gear transmission system of the excavator is used to pass the power of the engine to the hydraulic pump and other mechanical components. It achieves different speed and torque output through combination of gears of different sizes to meet the needs of excavators under different working conditions. Steel structure: The steel structure of the excavator is an important part of supporting and protecting mechanical components. It is made of sturdy steel and has sufficient strength and rigidity to cope with the various forces and vibrations of the excavator in the work. Control system: The contr...