How Does an Excavator Hydraulic Pump Work?

At Jining Kunpeng, we understand that understanding your equipment is crucial for making an informed purchase. Many of our customers, such as Saije, often grapple with questions about the inner workings of an excavator hydraulic pump.

The excavator hydraulic pump is the heart of your machinery, converting mechanical energy into hydraulic energy, which powers the various functions of the excavator.

If you’re keen to delve deeper into how these essential pieces of equipment work, keep reading. You’re about to get a thorough explanation, backed by professional insights.

What Are the Basic Components of a Hydraulic Pump?

At the core, hydraulic pumps have a few essential parts that make the magic happen. These include the pump casing, the gears or pistons, and the pressure seals. Together, these components enable the pump to perform its crucial task of energy conversion. Source

How Do These Components Interact?

As the CEO of Jining Kunpeng, I can affirm that the harmony between these components is crucial. The gears or pistons move within the pump casing, creating a vacuum. This vacuum sucks hydraulic fluid from the reservoir into the pump chamber. Subsequently, the fluid is pushed out under pressure to perform various tasks. Source

What’s the Role of the Pump Casing?

The pump casing is like the body that houses the working organs. It ensures that there is a seamless interaction between the gears and the hydraulic fluid. The casing is often built with high-strength materials to withstand the pressure generated within it. Source

How Does the Pump Generate Pressure?

Pressure generation is where the real magic happens. When the gears or pistons move, they compress the hydraulic fluid against the walls of the casing. The hydraulic fluid has no other way to go but out under pressure, and this is what enables it to power various hydraulic systems. Source

What Are the Types of Hydraulic Pumps Used in Excavators?

There are mainly three types of hydraulic pumps used in excavators: Gear Pumps, Piston Pumps, and Vane Pumps. Each has its advantages and disadvantages, which influence their application in different types of excavators. Source

How to Choose the Right Hydraulic Pump?

This is an area where Jining Kunpeng excels. We recommend assessing your machine’s requirements and operational demands. Saije, like many procurement officers, focuses on quality inspections, streamlined logistics, and flexible payment methods, ensuring the pumps meet or exceed performance criteria.

How Do You Maintain a Hydraulic Pump?

Maintenance can significantly extend the lifespan of a hydraulic pump. Regular inspections, oil changes, and performance audits are part of the standard upkeep. Trust me, it’s an investment that pays off in spades. Source


Understanding the working principle of an excavator hydraulic pump is not just academic; it’s crucial for anyone in the construction and mining sectors. At Jining Kunpeng, we pride ourselves on not only providing top-quality hydraulic pumps but also equipping our clients like Saije with the knowledge to make informed decisions. Thank you for joining us on this enlightening journey.