K3V112DT-HNOV Hydraulic Pump for Doosan DH210 excavator spare parts

Short Description:

The Kawasaki K3V112DT-HNOV is an original negative-flow dual variable piston pump, professionally customized and calibrated for the hydraulic system of Doosan DH210 series excavators. It perfectly matches the original power torque curve of the DH210 main engine, efficiently converting mechanical rotation energy into stable and efficient hydraulic power. As the core power component of the excavator’s hydraulic system, it provides stable dual-circuit oil supply for all executive mechanisms, including boom, arm, bucket, traveling and slewing devices. Adapted to harsh working conditions such as earthwork construction, rock excavation and frequent load switching, this hydraulic pump features sensitive compound action response, stable pressure output and excellent impact resistance. It effectively avoids common hydraulic failures of inferior pumps, ensures coordinated and efficient equipment operation, and guarantees long-term stable and reliable working performance of Doosan DH210 excavators in various complex construction scenarios.

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Product Detail

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description

The K3V112DT-HNOV hydraulic pump inherits the mature Kawasaki K3 series large-displacement pump platform, equipped with exclusive HNOV control valve assembly tailored for Doosan DH210 torque parameters. The dual-pump independent variable structure realizes dynamic flow redistribution during multi-action composite operation, effectively reducing invalid power loss and improving overall fuel economy. The built-in negative-flow signal acquisition module feeds real-time main valve pressure data back to adjust pump displacement, balancing excavation force and operating speed accurately. The pump adopts high-strength cast steel shell, high-precision plunger pairs and hardened alloy valve plates. The upgraded reinforced sealing system adapts to long-term high-temperature, dusty and impact-intensive construction environments, effectively suppressing progressive internal leakage and system overheating caused by long-cycle operation. Low-quality alternative pumps usually have mismatched power curves, uncoordinated compound actions and fast wear of friction pairs, leading to insufficient digging force, slow boom response, weak climbing performance and reduced continuous operation efficiency.

product parameters

Brand: Kawasaki (Genuine Original)

Model: K3V112DT-HNOV

Product Name: Negative-Flow Control Dual Piston Main Hydraulic Pump Assembly

Applicable Equipment: Doosan DH210 series excavators and matched domestic engineering machinery

Structural Type: Axial Variable Displacement Dual Piston Pump (Negative Flow Control)

Core Structure: HNOV dedicated control valve group, negative-flow signal sensing module, dual-pump swashplate variable mechanism, high-precision plunger assembly, hardened alloy valve plate, built-in pressure limiting valve, reinforced multi-layer high-pressure sealing set, integral cast steel pump housing

Main Material: High-strength cast steel shell, wear-resistant alloy plunger pair, impact-resistant thickened valve plate, high-temperature aging-resistant sealing components, precision hydraulic control parts

Core Function: Dual-loop hydraulic power supply, negative-flow variable regulation, host power curve matching, power output for boom, arm, bucket, slewing and travel systems, ensuring coordinated compound action performance

Working Characteristics: Fast flow response, excellent multi-action coordination, reasonable power distribution, low heat generation, controllable internal leakage, stable pressure output and strong anti-fatigue performance

Working Condition Adaptation: Adapt to frequent load changes, repeated start-stop, impact load, high temperature and dusty open-air construction environments

Matching Parts: Main control valve assembly, travel/slewing hydraulic motor, hydraulic oil tank, return oil filter, high-pressure hydraulic hose, engine flywheel connection end

advantages

• The original HNOV control valve group adopts exclusive customized power curve, fully matching Doosan DH210 host torque characteristics and eliminating power mismatch loss.

• High-precision negative-flow feedback system optimizes flow distribution for compound actions, making excavation, lifting and traveling linkage smoother and more coherent.

• Dual-pump independent variable mechanism automatically adjusts displacement according to real-time load, effectively reducing idle and light-load power consumption with better fuel-saving performance.

• Built-in multi-stage pressure limiting protection releases peak impact pressure instantly, protecting internal precision friction pairs from overload damage.

• Hardened internal matching parts effectively slow down performance attenuation during long-term earth-moving and rock-breaking cyclic operation.

• Upgraded reinforced sealing structure resists hydraulic oil corrosion and aging, reducing external leakage risks under high-vibration and heavy-load working conditions.

• Standard original installation dimensions support direct on-site replacement without secondary cutting or modification, improving maintenance efficiency.

maintenance & replacement tips

• Regularly inspect the pump housing, sealing surfaces and high-pressure hose joints to eliminate oil seepage caused by long-term vibration and impact.

• Replace hydraulic oil and return-line filter strictly in accordance with the maintenance cycle to prevent particle impurities from scratching plunger and valve plate friction pairs.

• Pay attention to the smoothness of compound operations during construction; timely troubleshoot weak digging force and slow response caused by aging HNOV control components.

• Periodically check the tightness of flywheel side connecting bolts to avoid abnormal vibration and noise from loose installation.

• Avoid long-term continuous overload excavation to prevent premature fatigue damage of internal variable mechanism and friction pairs.

• Replace with genuine Kawasaki K3V112DT-HNOV hydraulic pump in case of sustained pressure drop, obvious internal wear, large-area external leakage and ineffective load holding.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.