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KCB-200 2 Inch Gear Pump

KCB-200 is a 2-inch port external meshing gear pump with built-in safety relief valve.
It runs steadily at 1440rpm, delivers stable flow and strong self-priming performance.
Widely used to transfer lubricating oil, diesel oil and other low-viscosity industrial liquids.

Model:
KCB-200
Brand:
Green Hydraulic
Model Number:
KCB-200
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

KCB-200 SERIES Gear Pump Overview

The KCB-200 is a robust, fixed-displacement external gear pump engineered for reliable fluid transfer in industrial, mobile, and lubrication systems where consistent flow and durability are critical. Built for 2-inch (DN50) line applications, this pump delivers dependable performance with a simple, proven design that balances high efficiency, strong self-priming capability, and low maintenance requirements.

KCB-200

Features and Benefits

Rugged Cast Iron Construction

The KCB-200 is constructed with high-grade cast iron pump bodies and covers, providing excellent structural rigidity and resistance to mechanical stress. This heavy-duty build minimizes deflection under continuous duty cycles, ensuring long service life in demanding environments like oil depots, factory lubrication systems, and marine fuel transfer applications.
High-Efficiency Helical Gear Design

Utilizing precision-machined helical gears (with heat-treated steel for hardness and wear resistance), the KCB-200 operates with smooth, low-pulsation flow. The gear geometry reduces torque and friction, maintaining high volumetric efficiency while minimizing noise and vibration during extended use.
Built-In Pressure Relief Safety Valve

Equipped with an integrated adjustable safety valve, the KCB-200 automatically protects the system from overpressure conditions. The valve diverts excess flow back to the suction side, preventing damage to the pump, piping, and connected equipment, eliminating the need for additional external relief components.
Superior Self-Priming Performance

Designed with optimized internal flow paths, the KCB-200 delivers reliable self-priming up to 5 meters, making it ideal for applications where flooded suction conditions are not guaranteed. This feature eliminates the need for pre-filling the pump before startup, simplifying installation and operation.
Versatile Compatibility and Application Flexibility

The KCB-200 supports a wide range of low-to-medium viscosity fluids, including lubricating oils, hydraulic oils, diesel fuel, and light industrial liquids. With standard 2-inch (DN50) inlet/outlet connections and a compact footprint, it integrates seamlessly into existing piping systems and is suitable for both stationary and mobile equipment installations.
Durable Bearing and Seal Configurations

Available with DU bronze bushings or optional ball bearings, the KCB-200 ensures stable shaft support and long operational life. Multiple sealing options (packing seal or mechanical seal) are offered to match different fluid types and temperature requirements, preventing leaks and ensuring reliable operation over time.

Specifications

Model Codes

Technical Data

Parameter	Value
Model	KCB-200
Pump Type	External Gear Pump
Rated Flow	200 L/min (12 m³/h)
Rated Pressure	0.33 MPa (3.3 bar / 47 psi)
Speed	1440 rpm
Inlet/Outlet Size	2" (DN50)
Matching Motor Power	4.0 kW (Y112M-4)
Self-Priming Height	≥ 5 m
Efficiency	≈ 78%
Relief Valve Opening Pressure	0.35–0.4 MPa

KCB-200 Hydraulic Gear Pump Installation Dimensions

Applications

Applications

The KCB-200 series provides a reliable, high-efficiency fluid transfer solution specifically designed for industrial and commercial applications where consistent flow, robust construction, and strong self-priming performance are required:

Industrial Lubrication & Hydraulic Systems: A workhorse for central lubrication systems, hydraulic power units, and machine tool oil circulation, where its stable flow ensures continuous equipment lubrication and prevents downtime.
Oil Depot & Fuel Transfer Operations: Optimized for loading/unloading diesel, fuel oil, and lubricants in tank farms, refineries, and transport fleets, handling continuous-duty cycles with minimal maintenance.
Marine & Shipboard Systems: Widely used in engine room lube oil systems, fuel transfer, and bilge pumping applications, where its cast iron construction and tolerance to fluid contamination ensure long-term reliability on vessels.
Food & Edible Oil Processing (Stainless Steel Version): Ideal for transferring vegetable oils, edible fats, and syrups in food production lines, with sanitary-grade material options meeting hygiene and safety standards.
Light Industrial & Chemical Fluid Handling: Suitable for low-viscosity, non-corrosive industrial liquids like glycol solutions, cutting oils, and process fluids in manufacturing plants and processing facilities.
Agricultural & Off-Road Equipment: Frequently employed in farm machinery lubrication, fertilizer transfer, and mobile fueling operations, where its strong self-priming capability and resistance to vibration make it well-suited for outdoor field environments.

Factory&FAQ

Packaging & Delivery

KCB-200 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.

KCB-200 Gear Pump FAQ

1. What are KCB-200 series gear pumps

The KCB-200 is a robust, fixed-displacement external gear pump designed for reliable fluid transfer and lubrication applications. Featuring a heavy-duty cast iron construction with precision-machined steel gears, it is specifically engineered for industrial, commercial, and mobile systems that require consistent flow, strong self-priming capability, and long service life.

2. What makes the KCB-200 different from standard gear pumps

The KCB-200 is built for reliability and low maintenance where basic gear pumps may underperform:

Integrated Safety Relief Valve: Unlike many standard pumps, the KCB-200 includes a built-in adjustable relief valve to protect against overpressure, eliminating the need for additional external components.
High-Efficiency Helical Gear Design: It utilizes precision helical gears instead of straight-cut gears, reducing noise, vibration, and wear while maintaining smooth, low-pulsation flow.
Strong Self-Priming Performance: Optimized internal flow paths allow for reliable self-priming up to 5 meters, making it ideal for applications without flooded suction conditions.

3. What is the working pressure range of KCB-200 pumps

The KCB-200 is a low-to-medium pressure transfer pump. Its typical performance ratings are:

Rated Continuous Pressure: 0.33 MPa (3.3 bar / 47 psi).
Maximum Intermittent Pressure: Up to 0.4 MPa (4 bar / 58 psi), limited by the built-in relief valve setting.

This pressure range makes it ideal for lubrication systems, fuel transfer, and light industrial fluid handling.

4. Can KCB-200 pumps replace other brands

Yes, the KCB-200 is a common drop-in replacement for many 2-inch (DN50) external gear pumps. It is often used as a substitute for:

2CY Series Gear Pumps (same pressure and flow rating).
Generic KCB-200 pumps from other manufacturers.

To ensure a successful swap, verify the Port Size (2-inch DN50), Mounting Configuration, and Flow/Pressure Ratings to match your existing system.

5. What hydraulic oil is suitable for KCB-200 pumps

To protect the gears, bearings, and seals, the following are recommended:

Fluid Type: Lubricating oils, hydraulic oils, diesel fuel, light fuel oils, and other non-corrosive industrial fluids.
Viscosity: Operating range of 5–1500 cSt. The optimal range is 20–500 cSt.
Filtration & Cleanliness: While tolerant of minor contamination, clean fluids free of large solid particles or abrasives are recommended to extend service life.

6. What is the typical speed range of KCB-200 pumps

The KCB-200 is optimized for standard motor speeds:

Rated Speed: 1440 rpm (4-pole motor), delivering the full rated flow of 200 L/min.
Reduced Speed Operation: Can be run at lower speeds (e.g., 960 rpm) for handling higher viscosity fluids, which reduces flow and pressure proportionally but increases torque and wear life.

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

KCB-200 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.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.

2.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.

3.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.

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

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

5.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.