Model: 65.06500 - 61384
Applicable Machine: This water pump is suitable for Doosan DH300 - 5 excavators equipped with Daewoo D1146T engines.
Performance Parameters
Flow Rate: Generally, it is around 35 - 55 liters per minute. However, the actual flow rate may vary according to the engine's working conditions and the demands of the cooling system.
Pressure: It can typically generate a pressure ranging from 0.7 - 1.1 bar. This ensures that the coolant circulates smoothly throughout the cooling system and dissipates heat effectively.
Rotational Speed: It is matched with the engine speed, and the operating speed range is approximately 1300 - 2200 revolutions per minute.
Pipeline Specifications
Material: It is mostly made of EPDM rubber or high - temperature - resistant plastics like nylon. These materials have excellent corrosion resistance and high - temperature resistance, enabling them to endure the long - term erosion of the coolant and high - temperature environment.
Dimensions: The inner diameters of the inlet and outlet pipes are usually between 30 - 45 millimeters. The length of the pipeline is determined according to specific installation requirements, generally around 500 - 1500 millimeters.
Connection Method: The connection between the pipeline and the water pump adopts quick - release plug - in joints or hose clamps, which ensures a firm connection and is convenient for installation and disassembly.
Mechanical Structure
Pump Body Material: Commonly, it is made of either cast iron or aluminum alloy. Cast iron features high strength, good wear resistance, and heat resistance. Aluminum alloy, on the other hand, is lighter in weight, which helps to reduce the overall weight of the excavator while also having good heat dissipation performance.
Impeller Design: The impeller is usually made of corrosion - resistant bronze or high - strength engineering plastics. The shape and angle of its blades are optimized to efficiently convert the mechanical energy of the engine into the kinetic and pressure energy of the coolant, enabling the coolant to circulate rapidly within the cooling system.
Shaft and Bearings: The shaft is made of high - strength alloy steel, which has good toughness and wear resistance, allowing it to withstand high - speed rotation and transmit large torques. High - precision rolling bearings or sliding bearings are selected for the shaft to ensure smooth rotation, reduce friction and wear, and extend the service life of the water pump.
