Komatsu PC300 excavator main pump , Iran

The main hydraulic pump of the Komatsu PC300 excavator is typically an axial piston pump with a variable swashplate design, capable of delivering high operating pressure. This pump provides a flow rate of approximately 2×240 liters per minute at a rated working pressure of 320 bar, supplying the necessary power for boom, arm, and swing operations. Its dual-circuit configuration increases efficiency and minimizes pressure losses in heavy-duty hydraulic systems.

The head of the PC300 main pump is generally set between 280 and 320 bar, with a maximum pressure capacity up to 350 bar. The internal design includes hardened steel pistons with a diameter of around 22 to 24 millimeters, operating at a rotational speed of 1800 to 2000 RPM. Precision sealing within the cylinder block reduces internal leakage, ensuring a volumetric efficiency greater than 90 percent.

The repair process of the PC300 hydraulic pump involves complete disassembly, inspection of pistons and the cylinder block, and replacement of worn components. Common failure signs include wear on piston shoes and sliding plates. After reconditioning or replacement, reassembly must be performed with specified torque values, followed by calibration on a hydraulic test bench at 300 bar pressure and 240 liters per minute flow rate.You can order and buy Komatsu PC300 excavator main pump from Iran by contacting us through whatsaap and email.
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