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2658537878
Epiroc
2658537878
This Hydraulic Pump is a high-pressure gear-type power unit designed specifically for the hydraulic systems of mining drills, excavators, and other heavy construction machinery. Serving as the "heart" of the hydraulic system, it is responsible for converting the mechanical energy output by the prime mover (engine or motor) into hydraulic energy, providing a high-pressure, high-flow power source for actuators (cylinders, motors). The pump body is precision cast from high-strength ductile iron, while the gears and shaft cores are forged from premium alloy steel and undergo nitriding treatment, paired with Nitrile Rubber (NBR) seals. With a rated working pressure of 25MPa and a volumetric efficiency of ≥90%, this product can operate continuously under harsh mining conditions characterized by heavy loads and high dust. It ensures the explosive force and endurance required for equipment digging and drilling.
High-Strength Ductile Iron Pump Body:
The pump body is manufactured from ductile iron via precision casting. Compared to ordinary gray iron, ductile iron offers higher tensile strength, yield strength, and excellent toughness (similar to steel). These material properties enable it to withstand high-pressure hydraulic shocks and frequent mechanical vibrations, eliminating catastrophic failures caused by pump body rupture or deformation.
Alloy Steel Forging & Nitriding Strengthening:
The drive gear, driven gear, and shaft cores are all forged from high-quality alloy steel, ensuring a dense internal structure with continuous grain flow. The surfaces of critical friction pairs undergo gas nitriding or ion nitriding treatment, achieving a surface hardness of HV800-1000, which provides exceptional wear resistance and anti-galling capabilities. This significantly reduces internal leakage under high pressure, ensuring a long service life.
High Volumetric Efficiency & Stable Flow:
The product features precision gear tooth profile crowning and strict control of assembly clearances, resulting in a volumetric efficiency of ≥90%. This means that during high-pressure output, internal leakage is minimal, and the vast majority of input power is converted into effective hydraulic energy. The flow output has low pulsation and stable pressure, effectively reducing system shocks and protecting pipelines and valve blocks.
Premium Sealing & Dust Prevention Design:
The shaft seal utilizes Nitrile Rubber (NBR) or fluoroelastomer oil seals, offering oil and heat resistance to prevent external dust and moisture ingress while stopping internal hydraulic oil leakage. The pump body design incorporates axial clearance automatic compensation, which adjusts for minor wear to maintain high efficiency.
Adaptability to Harsh Working Conditions:
Designed for high-dust mining environments, the pump inlet features coarse filtration protection. Bearings are selected as heavy-duty tapered roller bearings or composite bushings, capable of withstanding significant radial forces. At the rated 25MPa pressure, it supports prolonged continuous full-load operation with low temperature rise and high reliability.
Parameter | Specification |
|---|---|
Product Type | High-Pressure Gear Hydraulic Pump |
Core Materials | Ductile Iron Pump Body + Alloy Steel Gears/Shaft |
Surface Treatment | Forging + Nitriding |
Key Properties | Rated Pressure 25MPa, Volumetric Efficiency ≥90%, Stable Flow |
Applicable Media | Anti-wear Hydraulic Oil, Emulsion |
Mining Machinery: Hydraulic power source for drilling jumbos, tunnel drills, mucking loaders, and mining loaders.
Construction Machinery: Travel and work pumps for mini-excavators, skid steer loaders, road rollers, and graders.
Industrial Equipment: Power units for hydraulic stations of injection molding machines, die-casting machines, and CNC machine tools.
Agricultural Machinery: Hydraulic drive systems for combine harvesters and forage harvesters.
Installation & Maintenance Recommendation:
Ensure the concentricity between the pump shaft and the Power Take-Off (PTO) or motor shaft during installation. Use a flexible coupling for connection; direct belt driving is strictly prohibited. Prime the pump body with clean hydraulic oil before initial use to prevent dry running and burnout. Regularly inspect the suction filter to maintain smooth oil intake and strictly prevent cavitation. It is recommended to change the hydraulic oil and clean the tank every 2000 hours.
