371-3599 190-8970 Engine Oil Pump Diesel Pump CAT E320D E330D Excavator Parts

For 371-3599 190-8970 Engine oil pump Diesel pump CAT E320D E330D Excavator Parts

Specification

Description

This product is an original-spec engine oil pump custom-designed for CAT E320D and E330D series diesel excavators, which accurately matches the 371-3599 and 190-8970 model engines. It is a core wearing part and maintenance spare part that ensures the stable operation of the excavator's power system. As the "heart" of the engine lubrication system, the core function of the oil pump is to draw clean engine oil from the oil pan, pressurize it, and deliver it to the friction surfaces of various moving parts inside the engine (such as crankshaft, connecting rod, camshaft, etc.), forming a stable oil film to achieve lubrication, cooling, sealing and anti-rust protection. It effectively reduces component wear and avoids serious failures such as cylinder scuffing and bearing seizure caused by insufficient lubrication. Adopting the same structural design and installation dimensions as the original factory, the product can be directly replaced seamlessly without modifying the existing power system of the excavator, featuring extremely strong adaptability. It is widely used in the maintenance of E320D/E330D excavators under various harsh working conditions such as mineral mining, engineering construction and road construction.

Advantage

• Accurate Adaptation, Original Factory Compatibility:Strictly produced in accordance with CAT's original drawings and technical parameters, the core dimensions, interface specifications and mounting holes fully match the E320D/E330D excavators and 371-3599/190-8970 model engines. It solves the problems of difficult installation and unsmooth operation of non-adaptable spare parts, improving the installation efficiency by more than 40%.
• High-Strength Material, Excellent Durability:The pump body is integrally die-cast from high-strength ductile iron, featuring excellent impact resistance and corrosion resistance; the internal gears are made of 20CrMnTi alloy steel, which undergoes carburizing and quenching treatment, with a surface hardness of HRC58-62. Its wear resistance is 3 times higher than that of ordinary steel, effectively resisting impurity wear and pressure impact under harsh working conditions, and the service life is more than 2 times longer than that of auxiliary factory products.
• Precision Technology, Stable Operation:Precision processing is carried out by CNC lathes and five-axis machining centers. The gear meshing gap is controlled between 0.02-0.05mm, and the flatness error of the pump body sealing surface is ≤0.01mm, which effectively reduces the leakage risk and noise during operation. The working noise is less than 65 decibels, far better than the industry average standard.
• Full-Process Quality Inspection, Quality Assurance:Each oil pump undergoes 12 strict quality inspection procedures, including blank flaw detection, dimension inspection, pressure test, dynamic operation test, etc., to ensure that the delivered products have no sand holes, no cracks and stable pressure. The unqualified rate is controlled below 0.03%, providing reliable lubrication guarantee for the engine.
• High Cost-Effectiveness, Perfect After-Sales Service:On the basis of ensuring the original factory quality, the price is 30%-50% lower than that of the original factory spare parts, which greatly reduces the user's maintenance cost; it provides an 18-month long warranty service, and in case of quality problems, free replacement and technical support can be enjoyed to solve the user's worries.

Performance

• Stable Oil Supply Pressure:In the common working range of the engine speed of 800-2200r/min, the oil supply pressure is stably maintained at 0.35-0.5MPa, and the pressure fluctuation value is ≤0.02MPa. It can ensure that all friction parts of the engine can obtain sufficient oil lubrication under different working conditions such as idling and heavy load, avoiding lubrication failure caused by insufficient pressure.
• Sufficient Oil Supply Flow:At the rated speed (2000r/min), the maximum oil supply flow can reach 18-22L/min, which is much higher than the lubrication demand of various engine components (about 12-15L/min). The excess oil returns to the oil pan through the oil return pipeline, forming an efficient lubricating oil circulation system, and at the same time, it helps to take away the internal heat of the engine and reduce the engine body temperature.
• Excellent Low-Temperature Starting Performance:In a low-temperature environment of -20℃, the oil pump can start smoothly with the engine, and a stable oil supply pressure can be established within 30 seconds after starting, solving the problem of oil supply delay caused by increased oil viscosity in low-temperature environment and protecting the moving parts of the engine at the moment of cold start.
• Strong High-Temperature Resistance:It can work stably in a wide range of oil temperature from -20℃ to 120℃. When the engine oil temperature rises to above 100℃ due to heavy load, the pump body structure and sealing performance have no obvious changes, and the oil supply pressure and flow remain stable, without component deformation or sealing failure caused by high temperature.
• Outstanding Impurity Resistance:Built-in high-precision filtering device, which can filter impurities with particle size ≥5μm in the oil. At the same time, the anti-clogging structure is set inside the pump body, which can effectively avoid gear jamming even under the working condition of slightly poor oil cleanliness, ensuring the continuous and stable operation of the oil pump.

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