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construction hydraulic pump

The hydraulic pump for construction machinery is designed to provide a consistent flow of pressurized oil in motion and control circuits of heavy-duty equipment. It is an axial piston type featuring a swash plate design and variable flow control system. The displacement capacity ranges from 70 to 190 cubic centimeters per revolution, with a continuous working pressure up to 330 bar. The housing is made of ductile cast iron GGG40 with a compressive strength of 350 MPa. The internal cylinder is coated with 25-micron hard nickel to enhance wear resistance and extend service life. The operating temperature range is from -30°C to +120°C.

Construction hydraulic pumps are manufactured with over 94 percent volumetric efficiency and straight-flow design to minimize energy losses. The input shaft is made from alloy steel treated with a nitriding process for high fatigue resistance. The sealing system utilizes FKM O-rings capable of withstanding 380 bar pressure and 200°C temperature. Roller bearings with a 43 kN radial load capacity ensure stable performance and service life exceeding 13,000 hours. These pumps deliver reliable and durable performance in loaders, bulldozers, and excavators.
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