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NCB-6 Stainless Gear Pump

The NCB-6 is a type of internal gear pump. It features compact structure, stable flow, low noise and strong self-priming performance.
It is available in cast iron and 304/316 stainless steel versions. The stainless steel model belongs to stainless gear pump, suitable for conveying high-viscosity, corrosive and sanitary media such as syrup, edible oil, cosmetics and chemical liquids.
  • NCB-6

  • Green Hydraulic

  • NCB-6

  • Standard export carton/plywood case

  • Yes

  • ISO9001,CE

  • • Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)

  • 1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry

  • Key Shaft and Spline shaft

  • 1 set

Availability:
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Product Description

NCB-6 Gear Pump  Overview

The NCB-6 is a high-performance, fixed-displacement internal gear pump engineered for industrial systems requiring reliable high-viscosity fluid transfer and corrosion resistance. Featuring a compact three-piece construction, the NCB-6 is specifically designed to deliver stable flow with low pulsation, making it an ideal choice for sanitary food processing, chemical handling, and general industrial applications where efficiency and dependability are critical.

NCB-6

Features and Benefits

  • Robust Modular Construction (Cast Iron or Stainless Steel Versions):

    The NCB-6 is available in both heavy-duty cast iron and corrosion-resistant 304/316 stainless steel configurations. The stainless steel variant, built with precision-machined components, provides superior chemical compatibility and hygiene compliance compared to standard cast iron pumps. This robust construction minimizes wear and ensures extended service life in both general and corrosive environments.
  • High-Efficiency Internal Gear Design:

    Utilizing an advanced internal gear and crescent separator mechanism, the NCB-6 offers smooth, low-pulsation flow with strong self-priming capability. This design is inherently more tolerant of high-viscosity fluids (up to 100,000 cSt) and maintains consistent volumetric efficiency, making it ideal for transferring syrups, oils, resins, and other viscous media without performance degradation.
  • Precision Pressure-Retentive Clearances:

    Equipped with precision-ground gear profiles and optimized internal clearances, the NCB-6 minimizes internal fluid bypass and mechanical friction. This ensures exceptional mechanical efficiency and consistent pressure delivery across varying viscosities and operating temperatures, supporting both continuous and intermittent duty cycles.
  • Reliable Medium-Pressure Capability:

    Despite its compact footprint, the NCB-6 is engineered to handle continuous operating pressures of up to 0.6 MPa (6 bar). Its high-strength alloy or stainless steel gears and precision-machined components allow it to power fluid transfer systems with smooth, reliable flow, even under varying load conditions.
  • Versatile Installation and Operational Flexibility:

    The NCB-6 offers a versatile displacement of 6 m³/h and supports standard foot-mounted or flange-mounted installation options. With a reversible rotation design (when paired with a compatible motor), it provides unmatched operational flexibility for cramped plant layouts and specialized transfer applications, including bidirectional pumping needs.

Specifications

Model Codes

NCB-6(0)

Technical Data

Parameter Specification
Model NCB-6/0.5
Pump Type Internal Gear Pump
Flow Rate 6 m³/h (100 L/min)
Rated Pressure 0.5 MPa (5 bar)
Max. Pressure 0.6 MPa (6 bar)
Displacement 20 mL/rev
Speed Range 200–600 rpm (Recommended: 500 rpm)
Self-Priming Capability Up to 5 m
Viscosity Range 50–100,000 cSt

NCB-6 Hydraulic Gear Pump Installation Dimensions:

NCB-6(0)


Applications

Applications

The NCB-6 series provides a reliable, high-efficiency fluid transfer solution specifically tailored for industrial and sanitary applications where consistent flow, corrosion resistance, and handling of high-viscosity media are critical.
  • Food & Beverage Processing: A primary choice for transferring syrups, honey, chocolate, edible oils, and sauces, where the stainless steel NCB-6 meets hygiene standards and ensures smooth, low-pulsation flow.

  • Chemical & Petrochemical Industries: Optimized for handling mild acids, alkalis, and chemical solutions, where the 304/316 stainless steel construction provides long-term durability against corrosive environments.

  • Cosmetics & Personal Care Manufacturing: Widely used in the production of creams, lotions, shampoos, and liquid soaps, requiring gentle and consistent pumping to maintain product integrity.

  • General Industrial & Lubrication Systems: Ideal for transferring lubricating oils, greases, and heavy fuels in machinery and equipment, offering a robust power source that maintains high efficiency under varying viscosity conditions.

  • Specialized High-Viscosity Applications: Frequently employed in resin, paint, and adhesive transfer, where the internal gear design handles thick fluids with minimal shear and pulsation.


Vane Pump Application


Factory&FAQ

Packaging & Delivery

Shipping Methods

NCB-6 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.


NCB-6 Gear Pump  FAQ:

1. What are NCB-6 series gear pumps?

The NCB-6 is a high-efficiency, fixed-displacement internal gear pump, the flagship model of the NCB series. It features a compact, modular design available in both cast iron and 304/316 stainless steel constructions, engineered specifically for high-viscosity fluid transfer in industrial, chemical, and sanitary systems.

2. What makes the NCB-6 different from standard aluminum gear pumps?

The NCB-6 offers distinct advantages over traditional external gear pumps, especially for demanding applications:
  • Superior High-Viscosity Handling: The internal gear and crescent design generates lower shear forces, allowing it to handle fluids up to 100,000 cSt with consistent flow, where external pumps may struggle or cavitate.

  • Low Pulsation & Quiet Operation: The meshing profile delivers smoother, quieter flow with minimal pulsation, protecting sensitive products and reducing noise in the workplace.

  • Strong Self-Priming Capability: Its internal geometry creates high suction lift (up to 5 m), making it ideal for systems where the pump cannot be flooded.

  • Corrosion-Resistant Stainless Steel Option: Unlike most standard external gear pumps, the NCB-6 is commonly offered in 316L stainless steel, suitable for sanitary food/beverage and corrosive chemical applications.

3. What is the working pressure range of NCB-6 pumps?

The NCB-6 is a reliable medium-pressure workhorse. The series typically handles:
  • Continuous Operating Pressure: Up to 0.6 MPa (6 bar).

  • Intermittent/Peak Pressure: Up to 0.8 MPa (8 bar).

This stable pressure rating makes the NCB-6 ideal for process transfer, metering, and recirculation systems.

4. Can NCB-6 pumps replace other brands?

Yes, the NCB-6 is a popular, high-quality alternative to many other internal gear pumps. It is often used as a direct replacement or upgrade for:
  • Viking® SG/S Series pumps of similar flow.

  • Maag® industrial transfer pumps.

  • Other common internal gear pumps with comparable specifications.

To ensure a successful swap, verify the mounting configuration, port size/orientation, flow rate, and pressure rating to match your existing system.

5. What fluids are suitable for NCB-6 gear 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.

6. What is the typical speed range of NCB-6 pumps?

The recommended operating speed is 200–600 rpm, depending on fluid viscosity. For high-viscosity media (e.g., heavy syrups or resins), lower speeds (200–300 rpm) are recommended to prevent excessive shear and wear.

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

NCB-6 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.



Green Hydraulic Patent Certificate

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.

Unedited footage of the Green Hydraulic Factory

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.

Unedited footage of the Green Hydraulic Factory

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.


Green Hydraulic Advantages
Green logo



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