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  • 3.8KW/E Electric Hydraulic Power Unit (EHPU)
  • 3.8KW/E Electric Hydraulic Power Unit (EHPU)

3.8KW/E Electric Hydraulic Power Unit (EHPU)


Product Model: QSD3.8KW/E

The 3.8KW/E Electric Hydraulic Power Unit is a portable hydraulic power source driven by a servo motor. This servo motor hydraulic power unit features a servo motor combined with a fixed displacement pump as its core, integrated with a hydraulic valve group, tank, sensors, and a control system to form a new generation of energy-efficient hydraulic power units. It combines the advantages of hydraulics—high torque and rigidity—with the benefits of servo motors—high precision and fast response—replacing traditional asynchronous motor hydraulic power units. It is widely used in high-end equipment across automation, molding, machine tools, pressing, and assembly applications. Compared to traditional hydraulic power units, the core advantages of a servo motor hydraulic power unit (servo hydraulic station) are energy efficiency, high precision, fast response, low noise, and low oil temperature.

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Core Advantages
Energy Saving: The servo motor adjusts its speed in real-time according to the load, running at low speed or stopping when not in use. Energy savings are most significant under pressure-holding conditions, consuming over 80% less electricity than standard asynchronous motor hydraulic power units, leading to substantially reduced electricity costs during long-term operation.

Control Precision:
Pressure Control Precision: Extremely stable with minimal fluctuation. Traditional hydraulic power units experience large pressure fluctuations, typically ±5% to ±10%, relying on relief or proportional valves, which introduce significant lag.
Flow/Speed Control Precision: Stepless, precise, and impact-free. Traditional units have fixed or step-adjusted flow, resulting in unstable speed and large impacts.
Response Speed: Millisecond-level overall system response, making the control feel more responsive and intuitive during operation.

Control Mode Advantages: Fully closed-loop with intelligent control, achieving three closed loops for pressure, flow, and position. Allows arbitrary setting of multistage pressure and speed, with more accurate pressure-holding time.

Application Scenarios
Injection Molding Machines / DieCasting Machines: Significant power savings, stable pressure holding, high product precision, and low noise.
Presses / Hydraulic Presses / Forming Equipment: Servo hydraulic presses, four-column hydraulic presses, sheet metal stamping, bending, stretching, and straightening machines.
Automotive Manufacturing Equipment: Component pressing, riveting, and bending equipment; hydraulic stations for engine/transmission assembly lines; welding fixtures and clamps.


An electric hydraulic power unit is a portable hydraulic power unit powered by an electric motor. It provides stable high-pressure power to various hydraulic tools and is generally used in the following environments:

1. Emergency rescue: demolition, rescue, drainage, and lifting operations;

2. Municipal engineering: road maintenance, pipeline construction, and landscaping maintenance;

3. Indoor/enclosed spaces: tunnels, factories, underground utility tunnels, and buildings;

4. Industrial support: power supply for hydraulic tools, clamps, and lifting equipment. Because the equipment is driven by an electric motor, it produces no exhaust fumes, operates with low noise, and is compact, portable, and easy to transport.



Motor 380V Output Flow (Lpm) Continuous Output Pressure (Mpa) Intermittent Output Pressure (Mpa) Oil Tank (L) Dimensions (mm)
1.5kw 5.7 16Mpa 20Mpa 40L 500*350*530
2.2kw 8.6 16Mpa 20Mpa 55L 490*380*650
3kw 14.4 16Mpa 20Mpa 55L 490*380*650
4kw 23 16Mpa 20Mpa 55L 490*380*660
5.5kw 28.8 16Mpa 20Mpa 100L 620*480*780
7.5kw 46 16Mpa 20Mpa 120L 750*550*850
11kw 57.6 16Mpa 20Mpa 150L 750*550*1010
15kw 90 16Mpa 20Mpa 200L 750*600*1130

Wuhu Qisheng Intelligent Equipment Co., Ltd. is a professional designer and manufacturer of high-end hydraulic equipment focusing on emergency, rescue, agricultural water conservancy, environmental protection and other fields. Deeply engaged in the hydraulic equipment industry, we keep up with the industry development trend and empower efficient operations in various fields with professional strength to promote high-quality industrial development. The company's core competitiveness lies in its strong technological and production capabilities. We have a team of senior professional R&D engineers, all of whom have rich practical experience in industry development. Deeply rooted in the R&D field of hydraulic equipment, they accurately grasp the industry's technical pain points and demand directions, providing solid support for product innovation and upgrading. At the same time, the company is equipped with an efficient production system, realizing the efficient connection between R&D and production, which can quickly respond to market changes, timely meet the diverse needs of different customers, and ensure delivery efficiency and product stability.

In terms of product layout, the company focuses on the core field of emergency rescue hydraulic equipment. The developed products cover multiple categories such as hydraulic power stations, slurry pumps, integrated and portable water pump equipment, and hydraulic breakers. With comprehensive functions, the products can be widely used in various scenarios such as drainage, dredging, forest fire fighting, cutting, drilling, and sand suction, adapting to the actual operation needs of core fields such as emergency rescue and environmental construction. With the advantages of non-electric drive, high lift, strong wear resistance and easy mobility, they have become "hardcore equipment" under complex working conditions. Relying on strong design and development capabilities, the company not only provides high-quality standardized products, but also deeply understands customers' specific working condition needs, provides full-process customized R&D solutions, and tailors exclusive hydraulic equipment to effectively solve customers' personalized operation problems.

Upholding the development philosophy of "promoting the development of emergency rescue hydraulic equipment and leading the technological innovation of the industry", the company always adheres to the original intention of quality, focuses on customers' core demands, and is committed to providing customers with high-quality, highly competitive products, customized solutions and comprehensive services. With reliable product performance and professional service guarantee, we create sustainable value for customers, deeply cultivate the industry, forge ahead steadily, and strive to become a trusted strategic partner of customers in the high-end hydraulic equipment field.

About Qisheng
Wuhu Qisheng Intelligent Equipment Co., Ltd.

Wuhu Qisheng Intelligent Equipment Co., Ltd. is a professional designer and manufacturer of high-end hydraulic equipment focusing on emergency, rescue, agricultural water conservancy, environmental protection and other fields. Deeply engaged in the hydraulic equipment industry, we keep up with the industry development trend and empower efficient operations in various fields with professional strength to promote high-quality industrial development. The company's core competitiveness lies in its strong technological and production capabilities. We have a team of senior professional R&D engineers, all of whom have rich practical experience in industry development. Deeply rooted in the R&D field of hydraulic equipment, they accurately grasp the industry's technical pain points and demand directions, providing solid support for product innovation and upgrading. At the same time, the company is equipped with an efficient production system, realizing the efficient connection between R&D and production, which can quickly respond to market changes, timely meet the diverse needs of different customers, and ensure delivery efficiency and product stability.

In terms of product layout, the company focuses on the core field of emergency rescue hydraulic equipment. The developed products cover multiple categories such as hydraulic power stations, slurry pumps, integrated and portable water pump equipment, and hydraulic breakers. With comprehensive functions, the products can be widely used in various scenarios such as drainage, dredging, forest fire fighting, cutting, drilling, and sand suction, adapting to the actual operation needs of core fields such as emergency rescue and environmental construction. With the advantages of non-electric drive, high lift, strong wear resistance and easy mobility, they have become "hardcore equipment" under complex working conditions. Relying on strong design and development capabilities, the company not only provides high-quality standardized products, but also deeply understands customers' specific working condition needs, provides full-process customized R&D solutions, and tailors exclusive hydraulic equipment to effectively solve customers' personalized operation problems.

Upholding the development philosophy of "promoting the development of emergency rescue hydraulic equipment and leading the technological innovation of the industry", the company always adheres to the original intention of quality, focuses on customers' core demands, and is committed to providing customers with high-quality, highly competitive products, customized solutions and comprehensive services. With reliable product performance and professional service guarantee, we create sustainable value for customers, deeply cultivate the industry, forge ahead steadily, and strive to become a trusted strategic partner of customers in the high-end hydraulic equipment field.

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  • Environmental Management System Certificate
  • Occupational Health and Safety Management System Certificate
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