What type of pump is the HPU main pump?

The main pump of a Hydraulic Power Unit (HPU) is typically an axial piston pump because it is particularly effective for applications that require high pressure and variable flow rates. Axial piston pumps work by utilizing a set of pistons arranged parallel to the drive shaft, allowing the pump to generate a considerable amount of hydraulic power while maintaining efficiency in operation.

This type of pump is well-suited for hydraulic systems since it can produce high pressure with excellent controlled outputs, making it ideal for powering hydraulic machinery where precision and performance are crucial. The design of axial piston pumps also contributes to their durability and reliability in demanding environments, supporting sustained operation under challenging conditions.

In contrast, other pump types like centrifugal, diaphragm, and gear pumps serve different purposes and exhibit varying characteristics. Centrifugal pumps are often utilized for fluid transfer at lower pressures and are less effective for high-pressure applications. Diaphragm pumps are used primarily for specific industries, such as chemical handling, due to their ability to prevent contamination but may not deliver the same pressure capabilities as axial piston designs. Gear pumps are typically used for transferring viscous fluids but can be less versatile in applications requiring high-pressure output or variable flow adjustments.