In the field of hydraulic transmission, high-performance piston pumps are the core components that determine the power output and operational efficiency of equipment. Especially in sectors with strict power requirements such as construction machinery, metallurgical equipment, and marine heavy industry, a high-quality hydraulic piston pump can bring a qualitative leap to the overall performance of the machine. As a star product of Liyuan Hydraulic, the A7V Series Hydraulic Piston Pump has become the first choice for customers in many industries, thanks to its advanced technology, high-quality materials, and excellent performance. It not only provides stable and powerful power support for production operations but also helps customers reduce costs and increase efficiency with its high reliability and low energy consumption advantages. Next, let us delve into the core charm of the A7V Series Hydraulic Piston Pump and uncover the "secret" behind its wide application in multiple fields.

The outstanding performance of Liyuan Hydraulic's A7V Series Hydraulic Piston Pump stems from continuous breakthroughs and innovations in core technologies. This series of pumps adopts a number of industry-leading hydraulic transmission technologies. Every detail, from structural design to power transmission, has been carefully considered, ultimately achieving a perfect balance between high performance and high efficiency.

In terms of power output performance, the A7V Series Hydraulic Piston Pump adopts an innovative swashplate variable structure design. By precisely controlling the tilt angle of the swashplate, stepless adjustment of flow can be realized, with a flow adjustment range covering 10-500 L/min, which is suitable for the power needs of different equipment. At the same time, it adopts high-pressure distribution technology, with a rated working pressure of up to 35 MPa and a maximum impact pressure of 45 MPa, which can easily cope with high-pressure working conditions such as heavy-load operations of construction machinery and high-intensity operation of metallurgical equipment. A construction enterprise applied the A7V Series pump to the main hydraulic system of a 25-ton excavator. When excavating hard rock, the pump body continuously outputs high-pressure power of 32 MPa. Cooperating with the hydraulic breaker of the excavator, the single crushing time is shortened by 15% compared with traditional equipment, and the operation efficiency is significantly improved. In addition, this series of pumps has a wide speed adaptation range and can be compatible with motor speeds of 1000-3000 r/min. Whether it is low-speed and high-torque operation or high-speed and high-efficiency operation, it can maintain stable power output to meet the working conditions of different equipment.

High efficiency is another core advantage of the A7V Series Hydraulic Piston Pump. Through multiple technical optimizations, it minimizes energy loss and improves power transmission efficiency. In terms of internal structure, this series of pumps adopts a precise matching design of plunger and cylinder block. The plunger surface is nitrided, with a hardness of more than HV800. The inner hole of the cylinder block adopts honing technology, with a surface roughness of Ra ≤ 0.2 μm, and the matching gap is controlled between 0.005-0.008 mm, which greatly reduces hydraulic oil leakage, and the volumetric efficiency is as high as 96% or more. At the same time, the friction pairs inside the pump body adopt new anti-friction materials, and with the optimized lubricating oil circuit design, the mechanical efficiency is stably above 94%, and the total efficiency exceeds 90%, which is 5%-8% higher than that of similar products. A metallurgical enterprise applied the A7V Series pump to the hydraulic system of a steel strip rolling equipment. The power consumption per unit time during the operation of the equipment is 12% lower than that of the ordinary piston pump used before. Calculated based on an average daily operation of 16 hours, it can save more than 100,000 yuan in electricity bills every year. In addition, efficient power transmission also reduces the heat generation of the pump body, lowers the cooling load of the hydraulic system, and extends the service life of the hydraulic oil, further reducing the maintenance cost of customers.

Liyuan Hydraulic is well aware that high-quality materials are the foundation of product reliability. The A7V Series Hydraulic Piston Pump strictly controls the selection of materials. The core components are made of high-strength, high-wear-resistant, and corrosion-resistant high-quality materials, combined with precise processing technology, to ensure that the product can still maintain stable operation under harsh working conditions and provide customers with long-term and reliable power support.

In terms of key pressure-bearing components, the pump body and end cover of the A7V Series pump are made of high-strength forged steel material 42CrMo. After quenching and tempering treatment, the hardness reaches HB220-250, the tensile strength exceeds 1000 MPa, and the compressive performance is excellent. It can effectively withstand the impact load under high-pressure working conditions and avoid deformation or cracking of the pump body. A shipbuilding enterprise applied this series of pumps to the hydraulic system of a ship's deck crane. Under the marine wind and wave environment, the crane starts and stops frequently and the load fluctuates. The pump body bears high-frequency impact for a long time, and no structural damage occurred after 3 years of continuous operation. The plunger and cylinder block, as core transmission components, are made of 20CrNi2Mo alloy steel and QT600-3 ductile iron respectively. The plunger is carburized and quenched, with a surface hardness of HRC60-62, which has extremely strong wear resistance; the cylinder block obtains good strength and toughness through isothermal quenching process, and its fatigue life is greatly improved. According to third-party test data, the plunger and cylinder block of the A7V Series pump run continuously for 10,000 hours under rated working conditions, with a wear amount of only 0.02 mm, which is much lower than the industry average of 0.05 mm, and the service life can reach more than 8,000 hours.

In terms of sealing and protection, the A7V Series pump also pursues excellence. The seals are made of imported fluororubber materials, with an oil temperature resistance range of -20℃ to 200℃, a pressure resistance of 40 MPa, and excellent anti-aging performance. The service life is 3 times longer than that of ordinary nitrile rubber seals, which effectively prevents hydraulic oil leakage. At the same time, the outer part of the pump body adopts an epoxy resin powder coating, with a coating thickness of 80-100 μm, which has good corrosion resistance and scratch resistance, and can adapt to harsh environments such as high temperature and high humidity in metallurgical workshops and marine salt spray. A chemical enterprise applied the A7V Series pump to the hydraulic system of corrosive liquid transportation equipment. The equipment operated in an environment containing acid-base vapor for 2 years, the pump body coating did not peel off significantly, the internal components were not corroded and damaged, and the operation state remained stable.

With the comprehensive advantages of high performance, high efficiency, and high reliability, Liyuan Hydraulic's A7V Series Hydraulic Piston Pump has been widely applied in construction machinery, metallurgical equipment, ships, and other fields. It provides customized power solutions for production operations in different industries and has become a trusted choice for many customers.

In the field of construction machinery, the A7V Series pump is widely used in the hydraulic systems of excavators, loaders, road rollers, and other equipment. In response to the frequent commutation and large load fluctuations of excavators, this series of pumps has a fast pressure response capability, with a pressure adjustment time of less than 0.03 seconds, ensuring precise and smooth excavation movements; at the same time, its high efficiency and energy-saving characteristics can reduce the fuel consumption of the equipment. Test data from a construction machinery manufacturer shows that the fuel consumption per 100 kilometers of excavators equipped with the A7V Series pump is 10% lower than that of equipment equipped with ordinary pumps. In the field of metallurgical equipment, the A7V Series pump is suitable for rolling mills, continuous casting machines, metallurgical cranes, and other equipment. It can operate continuously and stably in high-temperature and dusty environments, providing reliable power for high-intensity operations such as steel rolling and molten steel transportation. After a large iron and steel enterprise used this series of pumps, the trouble-free operation time of the metallurgical crane was extended from the original 3,000 hours to 5,000 hours, and the equipment maintenance frequency was reduced by 40%.

In the marine field, the A7V Series pump has become an ideal power source for ship deck machinery, steering gear systems, and hatch opening and closing devices due to its excellent impact resistance and tilt resistance. In response to the rolling and tilting conditions of ships during navigation, this series of pumps adopts a special oil suction structure design. Even when the tilt angle is ±15°, it can still ensure stable oil suction efficiency and avoid cavitation; at the same time, its salt spray corrosion resistance can adapt to the harsh marine environment and extend the service life of the equipment. After an ocean shipping company's ships were equipped with the A7V Series pump, the failure rate of the deck cranes was reduced by 60%, effectively ensuring the smooth progress of cargo loading and unloading operations. In addition, the A7V Series pump can also be customized and modified according to customer needs, such as adding pressure compensation devices and integrating electro-hydraulic proportional control modules, to further expand the application scenarios and meet the special needs of different industries.

As a star product of Liyuan Hydraulic, the A7V Series Hydraulic Piston Pump has set a high-quality benchmark in the field of hydraulic transmission with its advanced technology, high-quality materials, and excellent performance, injecting strong power into the development of construction machinery, metallurgical equipment, ships, and other fields. In the future, Liyuan Hydraulic will continue to be customer-oriented, continuously optimize the performance of the A7V Series pump, explore the integrated application of more cutting-edge hydraulic technologies, such as introducing intelligent monitoring modules to realize remote fault diagnosis and using lightweight materials to reduce equipment energy consumption. It will constantly enhance the core competitiveness of products, provide better and more efficient power solutions for more industry customers, help customers achieve high-quality development, and promote the hydraulic transmission industry to a new height.