Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of bucher internal gear pumps in China. We warmly welcome you to wholesale bulk bucher internal gear pumps for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
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Bucher Gear Pumps are precision-engineered hydraulic pumps designed for high efficiency, reliability, and long service life in industrial and mobile applications. These pumps operate on the internal gear principle, where the gears mesh to create a smooth, pulsation-free flow, making them ideal for consistent hydraulic system performance.
Key Advantages
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- Compact design with high power density
- High volumetric efficiency
- Ability to operate under high pressure and varying temperatures
- Low noise and vibration for improved operational comfort
Technical Specifications
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| Parameter | Specification Range |
|---|---|
| Pump Type | Internal Gear Pump |
| Flow Rate | 5 – 250 L/min |
| Maximum Pressure | 210 bar (some models up to 350 bar) |
| Displacement | 2 – 63 cm³/rev |
| Operating Temperature | -20°C to +80°C |
| Mounting Type | SAE, DIN flange |
| Shaft Options | Splined, keyed |
| Weight | 5 – 45 kg (depending on model) |
| Compatible Fluids | Mineral oil, synthetic oils |
| Efficiency | Up to 92% |
Applications
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- Mobile hydraulic machinery such as forklifts, tractors, and cranes
- Industrial hydraulic systems for manufacturing and automation
- Marine hydraulics for steering and deck machinery
- Construction equipment including loaders, excavators, and lift systems
- Material handling systems for consistent and reliable fluid power
Related Models
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Internal Gear Pump Series
- QX Series – High‑pressure internal gear pumps with simple, robust design, low noise, and wide displacement range suitable for industrial and mobile hydraulics. Available in variants like QX2, QX3, QX4, QX5, QX6 and QX8.
- QXEH Series – Single‑stage internal gear pumps optimized for fixed and variable speed drives with extremely low pulsation and enhanced dynamic performance.
- QXEHX Series – Advanced version of QXEH pumps designed for even higher speed operation and resistance to cavitation under severe working conditions.
- QXP Series – Internal gear pumps with precise metering capabilities for handling fluids with very high or very low viscosities, ideal for polyurethane and fluid metering applications.
External Gear Pump Series
- AP Series – Traditional external gear pumps, available in single, double, or triple configurations with various displacement options. These pumps are suitable for general industrial and mobile hydraulics where cost‑effective performance and durability are priorities.
Typical models include AP05, AP100, AP212, AP250HP, AP312HP, etc., offering flexibility in mounting and pressure options.
Additional Pump Types (Supporting Gear Pump Solutions)
- Tandem & Multiple Gear Pumps – Combine two or more pump sections for multi‑circuit systems or synchronized flow requirements.
- Custom Assemblies – Bucher also provides customized gear pump configurations built to match specific customer requirements, such as special flanges or integrated control elements.
FAQ
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Q1: Can Bucher gear pumps handle high-pressure applications?
A: Yes, depending on the model, they can operate at pressures up to 350 bar. Always check the pump specifications for exact pressure ratings.
Q2: What is the recommended hydraulic fluid and viscosity range?
A: Bucher gear pumps are compatible with mineral oils, phosphate esters, and synthetic hydraulic fluids. Optimal viscosity range for standard operation is 20–100 mm²/s at 40°C. Operating outside this range can reduce efficiency, increase wear, or cause cavitation.
Q3: How do I select the right Bucher gear pump for my system?
A: Consider flow rate, operating pressure, displacement, and fluid type. Our technical team can provide expert guidance.
Q4: Are Bucher gear pumps noisy during operation?
A: These pumps are designed for low noise and vibration, but installation and fluid viscosity can affect noise levels.
Q5: Can I get spare parts or maintenance kits for Bucher pumps?
A: Yes, we provide original spare parts to ensure your pump continues to operate efficiently.
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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