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K7V125DTP Hydraulic Pump
K7V125DTP is a 125 mL/rev dual-pump series variable axial piston pump from Kawasaki's K7V series. As an upgraded successor to the K3V/K5V lineup, it features a rated pressure of 35 MPa and maximum 40 MPa, designed for open-circuit hydraulic systems in 20–25 t excavators and other medium-duty construction machinery. Available in both electronic and hydraulic control versions, it combines high efficiency, precise control, and robust reliability, making it a preferred main pump for medium-heavy equipment upgrades.
Key Features
1.Integrated Dual-Pump Series, Compact & Efficient
Front and rear pumps share a single drive shaft, eliminating the need for an external power distributor. This boosts transmission efficiency and saves installation space. The DTP dual-pump layout supports compact machine hydraulic designs, with electronic (e.g., 8N01) and hydraulic (e.g., 9N03) control options to suit different machine architectures.
2.High Pressure & Energy Efficient
Optimized spherical valve plate and hydraulic balance system ensure smooth cylinder operation and low friction. High volumetric and mechanical efficiency is maintained even at low pressure and speed, reducing heat and energy loss. Rated 35 MPa, maximum 40 MPa, it provides strong, efficient output for heavy-duty applications.
3.Heavy-Duty, Long-Life, Impact Resistant
Equipped with large-capacity heavy-duty bearings and reinforced drive shaft to reduce edge load and wear. Sliding surfaces are optimized via elastohydrodynamic lubrication analysis to prevent scuffing, ensuring stable, long-term operation under high-pressure, frequent load variations.
4.Low Noise & Strong Self-Priming
Optimized pressure transition zones on the valve plate and high-rigidity housing reduce operating noise. Maximum self-priming speed of 2,360 min⁻¹ ensures robust suction and minimizes cavitation risk across varying intake conditions.
5.Precise, Responsive Control
Electronic versions include dual solenoids for rapid, precise adjustment of flow and pressure, compatible with modern ECUs. Hydraulic versions support traditional control. Both support constant power, pressure-limiting, and load-sensing logic for smooth, shock-free actuator operation.
6.Easy Installation & Upgrade Compatibility
Multiple flange, shaft, and interface options are available. Some installation dimensions are compatible with the K5V125 series, enabling direct replacement without modifying the host machine. Mature production series with abundant spare parts make maintenance straightforward.
Core Advantages
| Model | K7V125DTP |
|
Advantage |
Description |
|
High Efficiency & Energy Saving |
Improved efficiency and smoother flow response over K3V/K5V pumps of the same displacement, reducing fuel consumption and lowering operational costs over time. |
|
Broad Operating Range |
Rated 35 MPa / Maximum 40 MPa, suitable for 20–25 t medium-heavy machinery under high-pressure, heavy-load, and variable-load conditions, offering strong stability and overload tolerance. |
|
Flexible Control Options |
Electronic and hydraulic versions support different machine architectures; electronic control integrates with ECUs for optimized performance and energy efficiency. |
|
Durable & Long-Lasting |
Large-capacity bearings, reinforced drive shaft, and optimized sliding surfaces reduce wear, extend service life, and decrease downtime. |
|
Easy Upgrade & Replacement |
Compatible with select K5V series installation dimensions for direct replacement without redesigning the base or piping, shortening retrofit time and reducing cost. |
Applications
Ideal for 20–25 t hydraulic excavators (e.g., XCMG 215DK, SANY 215/245), and suitable for medium-duty crawler drills, loaders, truck-mounted cranes, and other mobile hydraulic equipment. Compatible with open-circuit systems, it provides stable, precise power for frequent multi-function operations under heavy loads, making it a top choice for main hydraulic system upgrades in medium-sized construction machinery.
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