K5V140 Hydraulic Pump for Excavator spare parts

Short Description:

The K5V140 hydraulic pump is a high-performance variable displacement plunger pump, serving as the original core power component for 28–33 ton medium-heavy excavators.

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Product Detail

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description

The K5V140 hydraulic pump adopts an upgraded heavy-duty integrated swash plate variable structure, with core components including plunger, cylinder block and valve plate processed by ultra-precision grinding technology. The internal assembly clearance is strictly controlled to minimize friction loss during long-term heavy-load operation and greatly improve overall wear resistance and pressure stability. The internal flow channel is optimized with fluid dynamic polishing, which reduces hydraulic circulation resistance and heat accumulation, effectively restraining temperature rise during continuous heavy-duty operation and avoiding power attenuation caused by overheating. The pump body is integrally cast with high-strength ductile iron, featuring excellent compression resistance, vibration resistance and structural rigidity, adapting to complex and harsh construction environments such as heavy dust, muddy water erosion and frequent load switching.

product parameters

Product Model: K5V140 Hydraulic Main Pump

Product Type: Swash Plate Variable Displacement Plunger Pump

Applicable Equipment: 28–33 Ton Medium-Heavy Excavators

Structural Features: Upgraded Heavy-Duty Structure, Ultra-Precision Friction Pair, Sensitive Variable Adjustment, Low Heat Generation, Strong Pressure Resistance

Core Material: High-Strength Ductile Iron Shell + High Wear-Resistant Alloy Core Components

Working Performance: Stable High-Load Pressure Holding, Fast Hydraulic Response, Low Continuous Operation Temperature Rise, Strong Anti-Fatigue

Core Functions: Provide Sufficient High-Pressure Hydraulic Output, Support Full-Load Compound Actions, Improve Medium-Heavy Duty Construction Efficiency

Applicable Scenarios: Foundation Deep Excavation, Large Earthwork Backfilling, Slope Construction, Municipal Heavy-Duty Engineering, Medium-Sized Quarry Operations

Matching Parts: Excavator Main Control Valve, Heavy-Duty Hydraulic Pipeline, Pilot Pump, Gear Pump Assembly

advantages

Upgraded K5 Variable Technology, Smoother Heavy-Load Operation: Adopting optimized K5 series variable control logic, different from traditional K3V series pumps, the K5V140 features more precise flow and pressure matching. It can adaptively adjust power output according to variable heavy loads, ensuring smooth switching between light and heavy loads, effectively solving jitter and uncoordinated linkage problems of 30-ton class excavators under frequent load changes.
Large Displacement & Sufficient Heavy-Duty Power: With 140ml/r large displacement design, the pump provides stronger hydraulic flow and high-pressure output. It completely solves the problems of insufficient digging force and slow operation of small and medium displacement pumps during deep excavation and heavy earthwork filling, ensuring stable and powerful output for full-load medium-heavy duty operations.
Excellent High-Temperature Stability, Sustainable Continuous Operation: The optimized internal flow channel reduces hydraulic energy loss and heat accumulation. Even after long hours of non-stop heavy-load operation, the oil temperature rises gently without power limitation or speed reduction, avoiding construction efficiency drop caused by hydraulic overheating protection.
Ultra-Wear-Resistant Core, Stable Pressure Holding: Core friction pairs are made of high-hardness wear-resistant alloy with precision mirror grinding process, achieving extremely low internal wear rate. It fundamentally avoids internal leakage, pressure drop and hydraulic drifting under long-term cyclic heavy load, keeping the entire hydraulic system in stable working condition.

FAQ

Q1: What tonnage of excavators does the K5V140 hydraulic pump fit?
A: The K5V140 hydraulic main pump is designed for 28–33 ton medium-heavy excavators, suitable for heavy-duty earthwork, foundation excavation and medium-sized quarry working scenarios, with strong compatibility with mainstream 30-ton class equipment.
Q2: What symptoms mean the K5V140 main pump needs replacement?
A: If the excavator has weak heavy-load digging, slow full-machine compound actions, frequent pressure drop under heavy load, abnormally high hydraulic oil temperature and unsmooth linkage during continuous operation, the original main pump is severely worn and fails to hold pressure, requiring timely replacement.
Q3: Is equipment modification required for K5V140 pump replacement?
A: No modification is needed. The K5V140 pump is strictly manufactured according to original factory standards with fully consistent hole positions and pipeline interfaces, supporting direct plug-and-play installation for rapid on-site maintenance.
Q4: What is the difference between K5V140 and K3V112 pumps?
A: The K5V140 has larger displacement, better high-temperature stability and more precise variable adjustment, suitable for 28–33 ton medium-heavy excavators. The K3V112 is only applicable to 20–25 ton medium-large equipment, with insufficient power reserve and high-temperature resistance for heavy-duty operations.
Q5: How to maintain the K5V140 main pump to extend service life?
A: Regularly replace genuine qualified hydraulic oil and filter elements to ensure clean oil circulation. Avoid long-term full-load overload operation. Regularly check high-pressure pipeline leakage and blockage. Standard daily maintenance can effectively delay core component wear and main pump aging.

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.