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NCB2 A Gear Pump

The NCB2 is a compact, high-efficiency internal meshing gear pump designed for handling high-viscosity fluids (0.2–100,000 cP) in industrial systems. Featuring a precision-engineered crescent plate and co-rotating inner/outer gears, it delivers pulse-free flow, low noise, and no liquid trapping for smooth, reliable operation. Its robust, space-saving design supports reversible flow (by changing motor direction) and suits diverse media—from light solvents to heavy oils, resins, and semi-solid fluids. Widely used in petrochemical, paint, food, and hydraulic applications, the NCB2 offers stable performance, easy installation, and long service life.

Model:
NCB2
Brand:
Green Hydraulic
Model Number:
NCB2
Packaging Details:
Standard export carton/plywood case
Testing Before Shipment:
Yes
Cartification:
ISO9001，CE
Markets:
• Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)
Application:
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Shaft Type:
Key Shaft and Spline shaft
MOQ:
1 set


Availability:



Inquiry

Product Description

NCB2 Gear Pump Overview

The NCB2 is a compact, fixed-displacement internal gear pump engineered for reliable handling of high-viscosity fluids in industrial and mobile systems that demand consistent, low-pulsation flow. Featuring a robust cast iron construction, the NCB2 is specifically designed to deliver smooth, efficient operation with minimal noise, making it an ideal choice for direct mounting in space-constrained equipment where dependable performance is essential.

NCB2

Features and Benefits

Rugged Cast Iron Construction:
The NCB2 is built with heavy-duty cast iron bodies and covers, providing superior structural rigidity and corrosion resistance compared to lighter alternatives. This durable build minimizes deflection under pressure, ensuring stable performance and extended service life in demanding operating environments.
Precision Internal Gear Design:
Utilizing advanced internal meshing gears with a crescent plate, the NCB2 delivers near-pulse-free flow, eliminating trapped fluid and reducing mechanical noise. This design is inherently suited for handling high-viscosity fluids (0.2–100,000 cP) while maintaining high volumetric efficiency across varying loads.
High Viscosity Compatibility:
Engineered to handle a wide range of media—from light oils and solvents to heavy resins, paints, and semi-solid fluids—the NCB2 features optimized clearances that prevent cavitation and maintain consistent flow even with thick, non-Newtonian fluids.
Compact, Reversible Operation:
Despite its small footprint, the NCB2 supports reversible flow by simply changing motor direction, offering unmatched flexibility for bidirectional pumping applications. Its compact form factor allows for easy installation in tight spaces.
Versatile Industrial Applications:
The NCB2 is suitable for use in petrochemical processing, paint and coating systems, food-grade fluid transfer, and general industrial lubrication circuits. It provides reliable, cost-effective performance for both continuous and intermittent-duty cycles.

Specifications

Model Codes

Technical Data

Parameter	Specification
Pump Type	Fixed-displacement internal meshing gear pump
Flow Rate (NCB2 base model)	2 m³/h (0.55 L/s)
Rated Pressure	0.3 MPa (3 bar / 43 psi)
Displacement	~2.0 cc/rev (base model)
Speed Range	200–700 rpm (optimal for high-viscosity fluids)
Viscosity Compatibility	0.2–100,000 cP
Temperature Range	-20°C to +200°C (-4°F to +392°F)
Construction Materials	Cast iron body; stainless steel gears (optional)
Port Size	DN25 (1" NPT or flange)
Seal Options	Mechanical seal, packing seal, or magnetic coupling
Mounting	Foot-mounted, direct-coupled or belt-driven

NCB2 Hydraulic Gear Pump Installation Dimensions：

Applications

Applications

The NCB2 series provides a rugged, high-viscosity fluid transfer solution specifically tailored for industrial and process applications where consistent low-pulsation flow and exceptional mechanical reliability are required:

Resin & Adhesive Processing: The NCB2 excels in metering and transferring high-viscosity resins, epoxies, and hot-melt adhesives, where its internal gear design ensures smooth, pulsation-free flow without damaging sensitive polymer structures.
Paint & Coating Systems: Ideal for circulating and feeding paints, inks, and industrial coatings, its precision machining maintains consistent flow rates to prevent color variation and ensure uniform application in both batch and continuous processes.
Food & Beverage Processing: Suitable for transferring syrups, molasses, edible oils, and semi-solid food products, with optional sanitary-grade construction to meet hygiene standards while handling viscous media gently.
Petrochemical & Lubrication Circuits: Widely used for pumping heavy oils, greases, and residual fuels in refinery and industrial lubrication systems, its robust design resists wear from fluid contamination and maintains performance across wide temperature ranges.
Asphalt & Bitumen Handling: Equipped with optional heating jackets, the NCB2 efficiently pumps hot asphalt, bitumen, and tar products in road construction and roofing applications, maintaining fluidity and preventing line clogging.
Chemical & Specialty Fluid Transfer: Used for handling a variety of corrosive or shear-sensitive chemicals, polymers, and specialty fluids, with customizable seal and material options to suit diverse process requirements.

Vane Pump Application

Factory&FAQ

Packaging & Delivery

NCB2 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.

NCB2 Gear Pump FAQ:

1. What are NCB2 series gear pumps?

The NCB2 is a compact, fixed-displacement internal meshing gear pump designed for reliable transfer of high-viscosity fluids. Featuring a robust cast iron construction with precision internal gears and a crescent plate, it delivers low-pulsation, smooth flow in industrial systems that require consistent performance and minimal maintenance.

2. What makes the NCB2 different from standard aluminum gear pumps?

The NCB2 is built specifically for demanding high-viscosity applications where standard external gear pumps may struggle:

Internal Gear Design: Unlike external gear pumps, the NCB2’s internal meshing gears eliminate fluid trapping, reducing noise and pulsation while handling thick fluids more efficiently.
High Viscosity Compatibility: Engineered with optimized clearances, it excels with fluids from light oils to heavy resins (up to 100,000 cP), a range far beyond many standard gear pumps.
Reversible Operation: Flow direction can be reversed by simply changing motor rotation, offering unmatched flexibility for bidirectional pumping needs.

3. What is the working pressure range of NCB2 pumps?

The NCB2 is a reliable low-to-medium pressure transfer pump. Depending on the specific model, the series typically handles:

Continuous Pressure: Up to 3 bar (43 PSI).
Intermittent/Peak Pressure: Up to 5 bar (72 PSI).

This stable pressure rating makes the NCB2 ideal for continuous fluid transfer, metering, and circulation systems.

4. Can NCB2 pumps replace other brands?

Yes, the NCB2 is a high-quality alternative to many internal gear pumps. It is often used as a replacement or upgrade for:

Viking® 1224/4124 Series
Zenith® Metering Pumps
Tuthill® 2000 Series

To ensure a successful swap, verify the Mounting Style, Port Size, Displacement (cc/rev), and Seal Type to match your existing system.

5. What fluids are suitable for NCB2 gear pumps？

To protect the precision gears and extend service life, the following is recommended:

Fluid Type: Non-abrasive, shear-compatible fluids including oils, greases, resins, paints, inks, syrups, and non-corrosive chemicals.
Viscosity Range: 0.2 to 100,000 cP. Optimal performance is achieved at 500–10,000 cP.
Filtration: Cleanliness is vital for gear and bearing protection. A minimum filtration of 100 mesh (150 μm) is recommended to prevent abrasive particles from damaging internal components.

6. What is the typical speed range of NCB2 pumps?

The NCB2’s optimal operating speed depends on fluid viscosity:

Low Viscosity (0–1,000 cP): 300–700 RPM
Medium Viscosity (1,000–10,000 cP): 200–400 RPM
High Viscosity (>10,000 cP): 50–200 RPM

Operating within the recommended speed range prevents cavitation, reduces wear, and maintains consistent flow.

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

NCB2 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%).

Unedited footage of the Green Hydraulic Factory

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.

Unedited footage of the Green Hydraulic Factory3

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

Unedited footage of the Green Hydraulic Factory4

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.

Unedited footage of the Green Hydraulic Factory5

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.