Hydraulic Pump


Excavator pumps are versatile and widely used in hydraulic machinery such as excavators, concrete mixers, concrete pump trucks, pumping stations, road rollers, petroleum equipment, and roller compactors. If the excavator pump is not durable or the structure is not well-made, it is easy to get stuck in one place and cannot get out when the machine is actually used, which will delay the progress of the project.


Therefore, it is recommended not to use low-quality accessories in pursuit of cheap prices, but the cost of high-quality accessories is very high. The main pump of the excavator usually uses a plunger pump or a screw pump, and there are some gear pumps with linkages on it to provide the first pressure.


The working principle of the excavator pump is as follows: The hydraulic system of the excavator adopts a double-pump bidirectional circuit quantitative system, which is composed of two independent circuits. The oil pump used is A duplex pump, which is divided into A and B pumps. The eight pairs of multi-way reversing valves are divided into two groups, and the four pairs of reversing valve groups in each group are oil circuits in series. The pressure of oil pump A enters the first group of multi-way reversing valves to drive the swing motor, bucket cylinder and auxiliary cylinder, and drive the right travel motor through the central rotary joint. When not working, the pressure oil output by oil pump A enters the second group of multi-way directional valves through the confluence valve of the first group of multi-way directional valves. Multi-way reversing valve to speed up the working speed of the boom or stick. The second group of multi-channel oil pumps output the pressure oil reversing valve to drive the boom cylinder and stick cylinder, drive the left travel motor and the earthwork board cylinder through the center rotor joint.


Here, please allow me to recommend Hanjiu's product RE241578 hydraulic pump, which has passed CE and ISO certification. In terms of packaging, we can let you choose more free packaging or we provide you with neutral packaging, and provide a 12-month warranty under your normal use. High-quality accessories never worry about quality inspection issues , each part will be 100% factory tested before shipment. After leaving the factory, we will continue to provide you with high-quality after-sales service, even if it is one piece, we can also deliver it to you!


Our company has rich experience in maintenance, manufacturing and sales. Excavator pump components. We have a large number of advanced hydraulic pump test benches, equipped with a large number of experienced professional hydraulic system engineers. In addition, our excavator oil pumps are complete in variety and category, with favorable prices. In the same industry, our price is more favorable for the same quality, and our quality is higher for the same product price. We believe that your choice of our products will improve your shopping satisfaction. If you have any questions, you can consult us and look forward to your call.



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