Excavator New hydraulic pump

An excavator hydraulic pump is a crucial component in an excavator's hydraulic system.

First, Function

It's responsible for converting the mechanical power from the engine into hydraulic energy. This hydraulic energy is then used to power the various hydraulic actuators such as the boom, arm, and bucket cylinders, allowing them to move and perform the digging and lifting operations.

Second, Types

There are mainly two types: gear pumps and piston pumps. Gear pumps are simple and cost - effective, usually used in smaller or less demanding applications. Piston pumps are more complex and efficient, capable of handling higher pressures and flow rates, which are often used in larger and more heavy - duty excavators.

Third, Importance

A well - functioning hydraulic pump ensures smooth and efficient operation of the excavator. If the pump fails or malfunctions, it can lead to a loss of power in the hydraulic functions, severely affecting the excavator's performance and productivity. Regular maintenance and inspection of the hydraulic pump are essential to keep the excavator in good working condition.

The excavator hydraulic pump works through the following process:

1.It's driven by the engine of the excavator. As the pump rotates, it creates a vacuum at the inlet port. This vacuum draws hydraulic fluid from the reservoir into the pump.

2.Inside the pump, the mechanical action (such as the movement of gears in a gear pump or pistons in a piston pump) pressurizes the hydraulic fluid. The pressurized fluid is then forced out through the outlet port of the pump.

The pressurized hydraulic fluid is sent through a network of hoses and valves to the hydraulic cylinders and motors in the excavator. When the fluid reaches the cylinders, it pushes against the pistons in the cylinders. For example, in the case of the boom cylinder, this action causes the boom to raise or lower. In motors, the pressurized fluid makes the motor shaft rotate, which can drive components like the excavator's tracks for movement.

Hydraulic pumps for excavator

Mini excavator hydraulic pump