Kawasaki K3VL80 series variable piston pumps, suitable for 6-7 ton excavators, such as Sany 75 and XCMG 75 models.

Kawasaki K3VL80 Variable Piston Pump Detailed Parameters
I. Core Technical Parameters
Parameter Item Specification Value
Model K3VL80 (K3VL Series Tilt-Plate Axial Piston Pump)
Nominal Displacement 80 cm³/rev (milliliters per revolution)
Continuous Working Pressure 320 bar (32 MPa)
Peak Pressure 350 bar (35 MPa)
Maximum Self-Priming Speed 2,200 r/min
Rated Speed 1,800–2,200 r/min (suitable for excavator operating conditions)
Theoretical Flow Rate (@2000rpm) Approximately 160 L/min
Control Method Load Sensing (LS), Pressure Compensation, Electro-Proportional Control, Horsepower Control (customizable)
Weight Approximately 65 kg
Suitable Hydraulic Fluid Anti-Wear Hydraulic Oil (ISO VG46)
Operating Temperature Range -20℃ ~ +80℃
II. Core Selling Points and Technical Advantages
1. High Efficiency and Energy Saving, Suitable for Main Excavator Operating Conditions
- High Volumetric Efficiency: Peak efficiency >90%, significantly reducing hydraulic system heat generation and energy loss, making it the main pump for 7–8 ton excavators.
- Load Sensing Control (LS): Allocates flow as needed, eliminating unnecessary overflow losses. Automatically reduces displacement at idle, significantly lowering fuel consumption.
2. Low Noise and Low Pulsation Design
- Equipped with Kawasaki's patented pressure pulsation suppression structure, reducing pressure fluctuations by over 30% compared to traditional pumps, greatly minimizing pipeline vibration and noise, and enhancing overall machine comfort.
- Optimized tilt plate and distributor plate structure reduces mechanical noise during high-speed operation, suitable for engineering machinery scenarios with frequent operations.
3. Multiple Control Methods, Strong Adaptability
- Supports multiple control logics including load sensing, pressure compensation, electro-proportional, and horsepower control, which can be customized according to manufacturer requirements (e.g., the TB511 in your image is a dedicated version for specific models).
- The electro-proportional control version offers fast response and precise flow regulation, matching modern excavator electronic control systems.
4. High Reliability and Long Service Life
- Uses high-strength alloy materials combined with precision heat treatment processes. Key components (pistons, cylinder block, distributor plate) exhibit excellent wear resistance, strong impact and fatigue resistance.
- Integrated design reduces external pipeline connection points, lowering the risk of oil leakage and adapting to harsh construction site environments.
5. Compact Structure, Easy Installation and Maintenance
- Modular structure design with flange size and installation interface compatible with mainstream small excavator models, resulting in low replacement costs.
- Concentrated maintenance points, with convenient operations for filter replacement, pressure adjustment, etc., reducing equipment downtime.
III. Typical Application Scenarios
- Main hydraulic pump for 7–8 ton small excavators (e.g., Sany SY75, XCMG XE75, Linge LG80)
- Hydraulic systems of small loaders, forklifts, and other engineering machinery
- Hydraulic systems requiring medium-high pressure and variable control in industrial equipment