Kobelco Excavator Hydraulic Pump K7V63DTP-0E13 for SK140-8 SK130-8

The excavator hydraulic pump is the "heart" of the excavator's hydraulic system, and its performance directly determines the operating efficiency and stability of the excavator. Its core principle is to change the volume of the sealed working chamber through mechanical movement, thereby realizing the suction and discharge of liquid, converting the mechanical energy of the engine into hydraulic energy, and providing a power source for the entire hydraulic system.

In terms of function, the hydraulic pump provides high-pressure oil to various executive components of the excavator (such as the boom, stick, bucket, slewing mechanism, and traveling mechanism). When the hydraulic pump is working, it sucks low-pressure oil from the fuel tank, pressurizes it, and delivers it to the distribution valve. Then, the distribution valve distributes the high-pressure oil to the corresponding cylinders or motors according to the operation instructions, driving these executive components to complete actions such as expansion, rotation, and walking. For example, when operating the boom to lift, the high-pressure oil output by the hydraulic pump enters the rodless cavity of the boom cylinder, pushing the piston to extend, realizing the rise of the boom.