VG Series Double Hydraulic Internal Gear Pump

VG Series Double Hydraulic Internal Gear Pump Overview

VG Series Double Hydraulic Internal Gear Pump is designed for efficient hydraulic transmission and stable performance. It features compact structure, low noise, reliable operation, and long service life, suitable for industrial machinery and hydraulic systems.

Features and Benefits

• Double Pump Integrated Design
  Dual internal gear pump structure provides independent or combined hydraulic flow output, improving system efficiency and multifunctional operation capability.

• High Volumetric Efficiency & Stable Output
  Advanced internal gear design ensures smooth flow transmission, stable pressure output, and high working efficiency under various operating conditions.

• Low Noise & Low Pulsation
  Optimized gear engagement effectively reduces operating noise and pressure pulsation, ensuring quiet and stable hydraulic system performance.

• Compact Structure & Flexible Configuration
  Compact integrated design saves installation space and allows flexible configuration for industrial and mobile hydraulic systems.

• Reliable Performance & Long Service Life
  Precision manufacturing and durable materials provide excellent wear resistance, stable operation, and extended service life in demanding applications.

Model Codes

gear pump.pdf

Applications

The VG Series Double Hydraulic Internal Gear Pump provides high-efficiency dual-flow hydraulic performance for industrial and mobile systems requiring compact structure, stable pressure, and reliable continuous operation:

• Construction Machinery: Suitable for excavators, loaders, cranes, and road equipment, supplying independent hydraulic flow for multiple working systems.

• Agricultural Equipment: Widely used in tractors, harvesters, and agricultural machinery for steering, lifting, and auxiliary hydraulic operations.

• Industrial Hydraulic Systems: Applied in hydraulic presses, machine tools, and automation equipment requiring dual hydraulic circuits and stable oil flow.

• Material Handling Equipment: Ideal for forklifts, lifting platforms, and warehouse systems where simultaneous hydraulic functions are required.

• Mobile Hydraulic Vehicles: Installed in dump trucks, sanitation vehicles, and utility trucks to support tipping and auxiliary hydraulic systems simultaneously.

• Hydraulic Power Units: Suitable for compact hydraulic stations and power packs where dual-output performance, low noise, and durability are important. 

Packaging & Delivery

VG Series Double Hydraulic Internal Gear Pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

VG Series Double Hydraulic Internal Gear Pump FAQ:

1. What is the VG Series Double Hydraulic Internal Gear Pump?

The VG Series is a high-performance double internal gear pump designed for hydraulic systems requiring dual-flow output, stable pressure performance, and reliable operation in industrial and mobile applications.

2. What makes the VG Series different from standard gear pumps?

• Double Pump Design: Provides two independent hydraulic flow outputs from a single compact unit.

• Low Noise & Smooth Operation: Internal gear structure reduces pulsation and operating noise.

• High Reliability: Durable cast iron housing ensures long service life under continuous heavy-duty operation.

  
  

3. What is the working pressure range of VG Series pumps?

The VG Series is suitable for demanding hydraulic systems:

• Continuous Pressure: Up to 25 MPa (≈ 3600 PSI).

• Maximum Pressure: Up to 30 MPa (≈ 4350 PSI).
  It is widely used in industrial machinery, injection molding machines, and construction equipment.

  
  

4. Can VG Series pumps replace other brands?

Yes, the VG Series can replace many standard double internal gear pumps, including:

• Parker Hydraulic Pumps

• Rexroth Internal Gear Pumps

• Nachi Hydraulic Pumps
  Please verify mounting dimensions, shaft type, and displacement before replacement.

  
  

5. What hydraulic oil is recommended for VG Series pumps?

For stable performance and extended service life:

• Oil Type: Anti-wear hydraulic oil (AW type).

• Viscosity: ISO VG32–VG68 recommended.

• Filtration: Clean hydraulic oil is essential to reduce wear and maintain efficiency.

  
  

6. What is the typical speed range of VG Series pumps?

The VG Series supports a wide operating speed range:

• Minimum Speed: 600 RPM

• Recommended Speed: 800–2500 RPM

• Maximum Speed: Up to 3000 RPM depending on operating conditions and displacement.

• 
  

7. Do you provide OEM or customized services?

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

8. How can I get a quotation quickly

Please provide the following details:

• Model or displacement

• Working pressure

• Speed

• Quantity
  We will reply within 12 hours with a competitive quotation.

Certifications & Quality Assurance

VG Series Double Hydraulic Internal Gear Pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

FAQ

1.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

2.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

3.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.

4.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.