K3V140DT‑HNOV Hydraulic Pump for Excavator spare parts

K3V140DT‑HNOV Hydraulic Pump for Excavator spare parts Featured Image
  • K3V140DT‑HNOV Hydraulic Pump for Excavator spare parts
  • K3V140DT‑HNOV Hydraulic Pump for Excavator spare parts
  • K3V140DT‑HNOV Hydraulic Pump for Excavator spare parts

Short Description:

The Kawasaki K3V140DT‑HNOV is a dedicated negative‑flow dual variable piston main hydraulic pump for 30‑ton‑class excavator platforms. Adopting customized HNOV internal control parameters, it perfectly matches the power output curve and torque response characteristics of supporting main engine. As the core hydraulic power unit of the whole machine, this K3‑series upgraded pump provides stable dual independent loop hydraulic power for all working mechanisms including boom lifting, arm stretching, bucket digging, traveling and slewing. Optimized for heavy mine excavation, earthwork filling and long‑duration continuous high‑load operation, it features sensitive operational response, excellent multi‑action coordination, stable pressure output and low thermal attenuation, ensuring efficient and stable operation for host machine in complex and harsh construction environments.

Product Detail

Product Tags

description

The K3V140DT‑HNOV hydraulic pump adopts mature negative‑flow matching control technology. The exclusive HNOV valve set can real‑time capture pilot operation signals and dynamic load changes on site, intelligently adjust pump displacement and flow output, and achieve precise synchronous matching with the main control valve. This optimized control logic effectively reduces invalid power consumption under no‑load and light‑load conditions, improves overall energy utilization rate, and makes the equipment operation more flexible and smooth. The pump body is integrally cast with high‑strength alloy steel, equipped with high‑precision paired plunger assemblies and anti‑wear hardened valve plates, and matched with high‑temperature and pressure‑resistant upgraded sealing components. All finished pumps undergo strict factory durability cycling, impact resistance and harsh working condition simulation tests, with strong adaptability to high vibration, dusty and high‑temperature construction sites. Compared with ordinary general replacement pumps without professional calibration, the HNOV customized version has model‑specific parameter tuning, faster dynamic response and more coordinated compound actions, fundamentally solving common faults such as insufficient digging force, sluggish operation, system high temperature and energy waste caused by mismatched hydraulic parameters.

product parameters

Brand: Kawasaki (Genuine Original)
Model: K3V140DT‑HNOV
Product Name: Negative Flow Dual Variable Piston Main Pump Assembly
Applicable Equipment: 30‑ton‑class excavator
Structural Type: Axial Variable Displacement Dual Piston Pump (Negative Flow Control)
Core Structure: Custom HNOV control valve assembly, real‑time negative flow sensing module, dual‑pump swashplate variable mechanism, high‑precision wear‑resistant plunger group, hardened alloy valve plate, built‑in overload pressure protection valve, multi‑layer high‑pressure composite sealing system, integrated rigid cast steel pump housing
Main Material: High‑rigidity cast steel shell, wear‑resistant alloy plunger pairs, impact‑resistant thickened valve plate, high‑temperature anti‑aging sealing parts, precision hydraulic control components
Core Function: Dual independent hydraulic circuit power supply, negative flow intelligent variable regulation, engine power adaptive matching, providing balanced and continuous power support for full hydraulic execution systems to realize efficient compound operation
Working Characteristics: Sensitive flow response, accurate flow proportional distribution, low idle power consumption, low heat generation, stable pressure retention, tiny internal leakage increment and excellent structural fatigue resistance
Working Condition Adaptation: Suitable for heavy‑load excavation, rock crushing, frequent start‑stop operation, impact load working conditions and high‑temperature dusty open‑air construction scenarios
Matching Parts: Main control valve assembly, travel and slewing hydraulic motor, hydraulic oil tank, return oil filter, high‑pressure hydraulic hose, engine flywheel connecting end

advantages

• Equipped with original HNOV dedicated control program and negative flow matching system, achieving ultra‑high precision pump‑valve coordination and significantly improving overall operation accuracy of matched excavator.
• Intelligent dynamic flow adjustment follows real‑time load changes, effectively reducing invalid energy consumption under idle and light‑load states and greatly enhancing the fuel‑saving performance of the whole machine.
• The dual‑pump independent variable structure ensures seamless linkage of digging, lifting, traveling and slewing actions, eliminating operation jitter, response delay and motion stagnation.
• Built‑in multi‑stage pressure buffer protection structure absorbs instantaneous peak impact pressure, effectively protecting internal precision parts from overload damage and extending the overall service life of the hydraulic pump.
• The internal core components adopt overall hardening and anti‑wear treatment, which can effectively resist performance attenuation caused by long‑term cyclic heavy‑load operation and maintain stable power output for a long time.
• Upgraded composite sealing structure has strong resistance to high‑temperature hydraulic oil corrosion and aging, completely avoiding common faults such as external oil leakage and system pressure relief failure.
• Adopts original factory standard installation dimensions, supporting on‑site non‑destructive direct replacement without secondary modification and debugging, reducing equipment maintenance downtime and operating costs.

maintenance & replacement tips

• Regularly inspect the pump shell, sealing surfaces and high‑pressure pipeline joints to eliminate hidden oil leakage risks caused by long‑term operational vibration and mechanical impact.
• Replace hydraulic oil and filter elements strictly in accordance with host machine maintenance cycle to prevent particle impurities from scratching precision friction pairs and ensure the cleanliness of the hydraulic system.
• Keep the hydraulic oil medium clean and qualified, avoiding valve group jamming, signal distortion and negative flow control failure caused by oil deterioration and contamination.
• Check the tightening torque of flywheel connecting bolts regularly to prevent abnormal vibration, running noise and shaft wear caused by loose installation.
• Avoid long‑term extreme overload operation and frequent impact excavation to prevent premature fatigue failure of the internal variable mechanism.
• When typical faults such as continuous pressure drop, insufficient digging power, serious internal leakage and unsmooth compound actions occur, replace with genuine K3V140DT‑HNOV hydraulic pump in time to restore full hydraulic performance of matched excavator.

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.

our warehouse

our warehouse

Pack and ship

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