K3VL28 K3VL45 K3VL80 K3VL140 Hydraulic Pump

K3VL28 K3VL45 K3VL80 K3VL140 Hydraulic Pump

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 3 year year

Product details

K3VL Series Axial Piston Variable Displacement Pumps (K3VL28 / K3VL45 / K3VL80 / K3VL140)

1. Product Overview

• Type: Axial piston variable displacement hydraulic pump

• Brand: TypicallyKawasakior compatible alternatives (some manufacturers offer replacement models)

• Applications: Widely used in construction machinery (e.g., excavators, loaders, road rollers), industrial hydraulic systems, and marine equipment.

• Features: High pressure, high efficiency, energy-saving, suitable for closed or open hydraulic circuits.

2. Model Parameter Comparison

【表格】

Model Displacement (cc/rev) Rated Pressure (MPa) Peak Pressure (MPa) Typical Applications

K3VL28 28 28 35 Mini excavators, light-duty equipment

K3VL45 45 28 35 Medium excavators, loaders

K3VL80 80 32 35 Large construction machinery, road rollers

K3VL140 140 32 35 Heavy-duty equipment, mining machinery

3. Core Features

• Variable Displacement Control: Adjusts flow via pressure compensation or electro-hydraulic proportional control for optimized energy consumption.

• High-Pressure Design: Rated pressure of 28–32 MPa, suitable for high-load operations.

• High Efficiency: Piston structure minimizes leakage, achieving mechanical efficiency ≥90%.

• Durability: Built with high-strength bearings and wear-resistant materials for extended service life.

• Low Noise: Optimized flow path design reduces vibration and operational noise.

4. Typical Applications

• Construction Machinery:

• Hydraulic systems for excavators (main pumps, travel pumps)

• Loader working device drives

• Crane luffing and slewing mechanisms

• Industrial Sector:

• Hydraulic power for injection molding machines and die-casting machines

• Metal forming equipment (presses, bending machines)

• Marine & Energy:

• Deck machinery hydraulic drives

• Wind turbine yaw systems

5. Compatibility & Replacements

• Original Brand: Kawasaki K3VL series.

• Alternative Models:

• Domestic compatible pumps (e.g.,HNC series,Rexroth A10VSO replacements).

• Ensure matching displacement, pressure ratings, and mounting dimensions.

• Compatible Machines:

• Sany, XCMG, Zoomlion excavators (verify interface dimensions).

• Some Caterpillar and Komatsu models (may require modifications).

6. Maintenance & Troubleshooting

• Common Issues:

• Pump leakage: Check for aged seals or damaged shaft seals.

• Insufficient pressure: Investigate clogged suction filters or variable mechanism failures.

• Abnormal noise: Worn bearings or stuck pistons.

• Maintenance Recommendations:

• Replace hydraulic oil and filters regularly (every 500 hours).

• Avoid prolonged overload operation to prevent overheating.

7. Selection Guide

• Displacement Calculation:

Displacement (cc/rev) = Flow Rate (L/min) ÷ Rotational Speed (rpm) × 1000

• Pressure Matching: Ensure rated pump pressure ≥ system’s maximum working pressure.

• Mounting Dimensions: Verify shaft end, flange, and port sizes align with the original pump.

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Appendix: Advantages of K3VL Series Hydraulic Pumps

• Energy Efficiency: Variable control reduces idle power consumption, lowering operational costs.

• Reliability: Original Kawasaki quality or high-end domestic alternatives ensure long-term stable performance.

• Flexibility: Supports multiple control methods (manual, remote, electronic) for automation compatibility.

For technical drawings, manuals, or procurement inquiries, please provide detailed application scenarios and equipment specifications!

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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3 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

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