VG Series Hydraulic Gear Pump With Electric Motor Gear Pump

VG Series Hydraulic Gear Pump Overview

VG Series Hydraulic Gear Pumps are developed by our company and American Albert Fluid Power Co., LTD. (Ningbo NVICKS Hydraulic Co.,LTD., a wholly owned subsidiary; short for ABT) , cooperated with Zhejiang University . They're high performance internal gear pumps. The technology on the basis of the introduction of Germany to be improved,and we introduced a number of foreign advanced production and testing equipments, to make a pump of high pressure, low noise and low pulse.
Our company has independent intellectual property rights and National Innovation Fund support, widely used in rubber and plastic, die casting, shoe leather, forging, extrusion, bending, plate Shearing machinery and other servo hydraulic system.

Features and Benefits

• Pressure-Compensated Design
  Adopting axial and radial pressure compensation design to maintain high volumetric efficiency even at low speed and low viscosity. Ultra-low noise is achieved using high-strength cast iron and a unique internal noise reduction design.

• Low Flow and Pressure Pulsation
  Very low flow and pressure pulsation, stable flow and pressure output can still be maintained at low speeds. High-pressure design allows maximum working pressure up to 35 MPa.

• Wide Speed Range & Modular Design
  Wide operating speed range, with maximum speed up to 3000 r/min. Can be combined arbitrarily to form a double pump.

• Dual Pump Capability
  Can be combined arbitrarily to form a double pump, enabling versatile system integration and multi-function operation.

• Contamination Resistance & Long Service Life
  It is not sensitive to oil pollution and has a long service life, ensuring reliable performance in demanding applications.

Model Codes

gear pump.pdf

Applications

The VG Series Hydraulic Gear Pump delivers a versatile, high-performance hydraulic solution for industrial and mobile systems requiring reliable, consistent flow, where durability, efficiency, and compact installation are critical:

• Construction Machinery: Suitable for excavators, loaders, and aerial work platforms, providing smooth hydraulic power for both travel and work circuits from a single drive source.

• Injection Molding Machines: Ideal for dual-loop hydraulic systems, supplying dedicated flow to clamping and injection functions for precise, repeatable molding cycles.

• Agricultural Equipment: Used in tractors, harvesters, and sprayers to drive steering, lifting, and auxiliary circuits simultaneously, with robust performance in field environments.

• Material Handling Systems: Perfect for forklifts, pallet jacks, and conveyor systems, delivering independent flow for lifting and propulsion tasks while maintaining high efficiency under load.

• Machine Tools & Automation: Applied in CNC machines, press brakes, and assembly lines to operate clamping, feeding, and auxiliary systems, with low pulsation ensuring smooth, reliable operation.

• Mobile Hydraulic Systems: Installed in utility vehicles, garbage trucks, and snow plows to power multiple functions (lifting, compaction, and auxiliary hydraulics) from a single compact pump unit.

Packaging & Delivery

VG Series Hydraulic Gear Pump 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 Hydraulic Gear Pump FAQ:

1. What are VG Series Hydraulic Gear Pumps?

The VG Series is a high-performance, fixed-displacement internal gear pump line. Some models feature single-section designs, while others are tandem pumps with two independent sections in one housing. Engineered for industrial and mobile hydraulic systems, they deliver reliable and consistent flow, making them suitable for applications requiring compact, efficient, and multi-function hydraulic power.

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

• Versatile Configurations: Unlike single pumps that provide only one flow output, the VG Series offers multiple displacements and optional tandem arrangements, allowing independent flows for complex hydraulic systems.

• High Efficiency & Low Noise: Its internal gear design reduces noise and flow pulsation while maintaining higher volumetric efficiency compared to conventional external gear pumps, even at low speeds.

• Robust Construction: Built with durable cast iron housing and pressure-balanced wear plates, VG Series pumps maintain stable performance under high-pressure, high-cycle conditions better than many single-section aluminum pumps.

  
  

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

The VG Series is designed for demanding hydraulic applications. Depending on the specific model and displacement:

• Continuous Pressure: Up to 5,075 PSI (350 bar).

• Intermittent/Peak Pressure: Up to 5,800 PSI (400 bar).

This robust pressure rating makes the series ideal for driving high-force actuators, dual-loop systems, and other industrial and mobile machinery applications.

4. Can VG Series pumps replace other brands?

Yes, the VG Series is a high-quality, versatile alternative to other premium internal gear pumps. It is commonly used as a replacement or upgrade for:

• Parker PGP / PVP Series

• Rexroth A10V / 2FR Series

• Nachi VDR Series

To ensure a successful replacement, verify the Mounting Flange, Shaft Type, and Displacement (both pump sections for tandem models) to match your existing system.

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

To protect the precision internal gears, wear plates, and bearings, the following is recommended:

• Oil Type: Premium mineral-based hydraulic fluids with Anti-Wear (AW) and anti-foam additive packages.

• Viscosity: ISO VG32 to VG68. Optimal operating range is 100 to 150 SUS (20–30 cSt), though it can handle cold starts up to 2,000 SUS (430 cSt).

• Filtration: Cleanliness is critical. Minimum ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging gear faces and wear plates.

  
  

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

The VG Series is designed for versatile operation across a wide speed range:

• Minimum Speed: 300 RPM (for low-speed, low-noise operation in servo systems).

• Maximum Continuous Speed: 2,500 RPM (varies slightly by displacement).

• Peak Intermittent Speed: Up to 3,000 RPM (for short-duration high-demand cycles).

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 Hydraulic 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.