OEM Hydraulic Piston Pump Parts A4VG71 A4VG90 | Tonkee®

The A4VG71 and A4VG90 hydraulic piston pumps share several common characteristics that make them versatile and efficient in demanding hydraulic systems.

These axial piston pumps are designed for open circuit applications and are known for their high power density, precise control, and durability. They are widely used in mobile and industrial machinery, including construction equipment, mining machinery, and material handling systems.

One of the primary specifications of these pumps is their displacement, a measure of the volume of fluid displaced per revolution of the pump. The A4VG71 has a displacement range of 40 to 71 cc/rev, while the A4VG90 covers a displacement range of 71 to 90 cc/rev. This range allows for flexibility in meeting diverse application requirements, accommodating various flow and pressure demands.

Both pumps feature axial piston swashplate design, where pistons move parallel to the drive shaft. This design ensures a compact and lightweight construction while maintaining high efficiency. The swashplate angle adjustment mechanism allows for variable displacement, enabling precise control of the pump output to match the load requirements of the hydraulic system.

Efficiency is a critical aspect of hydraulic pumps, and the A4VG71 and A4VG90 excel in this regard.

With their advanced design and precision manufacturing, these pumps achieve high overall efficiency, contributing to energy savings and reduced operational costs. The pumps are also equipped with a pressure cut-off control, further enhancing energy efficiency by minimizing unnecessary fluid flow.

In terms of maximum pressure, both pumps are designed to operate under high-pressure conditions. The A4VG71 can handle pressures up to 400 bar, while the A4VG90 is capable of operating at pressures reaching 450 bar. This capability makes these pumps suitable for applications where high power and reliability are paramount.

The A4VG71 and A4VG90 pumps are built with durability in mind. High-quality materials, precision engineering, and stringent quality control ensure a robust and reliable performance even in challenging operating environments. These pumps are equipped with features such as a pressure-loaded thrust bearing to enhance reliability and extend the service life of the pump.

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