Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of variable displacement hydraulic pump in China. We warmly welcome you to wholesale bulk variable displacement hydraulic pump for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Why Choose Yanhui Hydraulic?
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- 100% original hydraulic products from top global brands
- Wide selection: Rexroth, Parker, Vickers, Kawasaki, Nachi, Daikin
- Expert guidance to pick the right pump for your system
- Fast quotation and worldwide delivery
- Guaranteed quality and reliability
- Customer-focused pre- and after-sales support
- Cost-effective solutions with long-term savings
Product Overview
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Variable displacement hydraulic pumps are the core of modern energy-efficient hydraulic systems. Unlike fixed displacement pumps, these units automatically adjust flow according to system demand, which reduces energy loss, lowers heat generation, and extends component life. They are widely used in industrial, mobile, marine, and construction equipment where precision control and power optimization are critical.
Key Advantages
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- Energy saving under partial load
- Precise pressure and flow regulation
- Longer component life due to less heat
- Suitable for complex and automated systems
Technical Specifications
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| Parameter | Typical Range |
|---|---|
| Pump Type | Axial Piston / Vane |
| Displacement Range | 10 – 500 cc/rev |
| Maximum Pressure | 250 – 350 bar |
| Peak Pressure | Up to 420 bar |
| Speed Range | 600 – 3000 rpm |
| Flow Control | Pressure Compensated / Load Sensing / Electro-Proportional |
| Control Response Time | ≤ 50 ms |
| Efficiency | Up to 95% volumetric efficiency |
| Mounting Type | Flange / Foot Mount |
| Rotation Direction | Clockwise / Counterclockwise |
| Working Temperature | -20°C to +80°C |
| Fluid Type | Mineral Oil, HLP, HVLP |
Applications
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- Construction machinery such as excavators, loaders, and cranes
- Industrial presses and injection molding machines
- CNC machine tools and automation systems
- Agricultural equipment including harvesters and tractors
- Marine hydraulic steering and deck machinery
- Mining and heavy equipment systems
Related Models
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- Rexroth A10VSO / A4VSO / A11VO Series
- Parker PV / PVP Series
- Vickers Eaton PVH Series
- Kawasaki K3V / K5V Series
- Nachi PVS Series
- Daikin V Series
- Yuken A Series
All models are genuine brand products with original quality assurance.
FAQ
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Q1: How is a variable displacement pump different from a fixed displacement pump?
A fixed pump delivers constant flow. A variable pump adjusts flow based on demand, reducing energy loss and heat.
Q2: How do I select the correct displacement?
Start with required system flow (L/min) and motor speed. Then consider peak pressure, duty cycle, and control method (pressure compensated, load sensing, etc.).
Q3: Are variable displacement pumps more expensive?
Initial cost is higher, but long-term energy savings, reduced heat, and longer component life often make total cost lower.
Q4: What control type should I choose?
Pressure compensator: for constant pressure systems
Load sensing: for mobile machinery and variable loads
Electro-proportional: for precise, automated control
Q5: Can these pumps replace old fixed pumps?
Yes, but system redesign may be required, especially for control circuits and relief valve settings.
Contact Us
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Request a Quote Today to ensure your hydraulic system performs at its best with genuine Nachi components from Yanhui Hydraulic.
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