Product Parameters:
Name: BC21 External Radiator
Power supply: 220V
Pump parameters: 4300RMP,750L/H
Fan speed: 3000 RPM
Size: 559.5mm*265mm*423mm (Length * Base width * Height)
Fin material: Aluminum
Color: White
Connectors: G1/4 thread
Working power: 120W
Operating temperature: 35-65℃
Cooling power: 4.5KW
Product Description
Functional Targeting for High-Demand Thermal Management
The BC21 External Radiator is engineered for professional environments requiring robust thermal management across multiple equipment types. Its external configuration facilitates seamless integration into advanced water cooling systems, supporting both OEM manufacturing and industrial maintenance applications. Target users include system integrators and hardware engineers working with PCs, laser engraving machines, and industrial printers requiring dependable liquid cooling solutions. The radiator’s configurability and compatibility with standard fittings make it a versatile component in complex thermal management setups. This water cooling solution addresses high power dissipation needs while enabling scalable system designs in demanding operational settings.
Technical Composition and Measurable Cooling Capabilities
This coolant assembly features a high-efficiency SC-75A pump rated at 4300 RPM, delivering a flow rate up to 750 L/H for consistent heat transfer. Complemented by fans operating around 3000 RPM, the radiator achieves a total cooling power near 4.5 KW. The aluminum fin material enhances thermal conductivity while maintaining lightweight structural integrity, optimizing heat exchange performance. Standardized G1/4 connectors support straightforward integration into existing water-cooling loops. Operating within a temperature range of 35–65°C and requiring 120 W system power, this radiator offers precise, quantifiable performance metrics essential for engineering evaluations and system validations.
Industry Integration and Practical Deployment Scenarios
This water cooling solution finds application in diverse industrial sectors focused on high-precision thermal control, such as computing, photonics, and manufacturing automation. It serves critical roles in the cooling infrastructure of PCs and laser engraving machines, as well as in printer systems and other industrial equipment, ensuring operational stability and longevity. The BC21 external radiator’s modular design allows for rapid deployment in prototype development and overclocking test benches, as well as educational demonstrations. By enabling efficient heat dissipation, it supports energy-efficient workflows and sustained equipment reliability within complex water cooling system architectures used in demanding production and research environments.

Product Advantages
Design Advantages Rooted in Modularity and Compatibility
The BC21 external radiator is designed with an emphasis on modularity and system adaptability. Its external form factor ensures flexible placement options within water cooling system layouts. Use of industry-standard G1/4 connectors facilitates compatibility with a broad range of liquid cooling solutions and accessories sourced from various radiator factories. The aluminum fin construction balances thermal performance with structural weight constraints, supporting efficient pumping requirements without compromising system stability. This design approach streamlines integration efforts in industrial assembly lines, minimizing retrofitting complexity and supporting scalable system expansions.
Performance and Operational Reliability Enhancements
Performance-wise, the BC21 combines a high-flow SC-75A pump and speed fans that enable continuous removal of excess heat, benefiting sensitive electronic components and industrial systems alike. It supports steady operation under working temperatures between 35 and 65°C with a consistent cooling power output of 4.5 KW, ensuring equipment operates within safe thermal thresholds. The solution’s ease of installation into diverse water cooling systems reduces downtime during maintenance or upgrades, thereby improving operational efficiency. This product delivers measurable ROI through stable thermal performance, minimizing risk of overheating and prolonging asset lifecycles in rigorous environments.

Use Scenarios
Advanced PC Water-Cooling Loop Design and Testing
In professional PC assembly and testing environments, the BC21 external radiator functions as a critical component for developing and validating complex water cooling loops. Its high-flow pump and aluminum fin design enable efficient thermal exchange during overclocking stress tests, where precise control of heat dissipation is vital. System integrators rely on its compatibility with standard fittings to quickly reconfigure setups across multiple test benches. This radiator supports engineers in optimizing cooling system parameters, enhancing hardware reliability, and demonstrating compliance with performance benchmarks in enterprise computing or custom workstation manufacturing.
Integration Within Laser Engraving Machine Cooling Systems
Laser engraving machines in industrial production require sustained, high-efficiency cooling to maintain laser module performance and prolong operational uptime. The BC21 external radiator provides a water cooling solution that ensures rapid heat removal through a combination of pump-driven fluid circulation and fan-assisted heat dissipation. Its external installation facilitates retrofitting into existing machine enclosures without compromising workflow or workspace ergonomics. This solution’s effective thermal management meets industrial temperature regulation standards, contributing to consistent laser precision and reduced thermal stress on sensitive components within automated manufacturing lines.

Is the BC21 External Radiator compatible with existing water cooling systems?
Yes, our BC21 External Radiator supports standard G1/4 connectors, making it compatible with most custom water cooling system configurations. We design it with flexibility to integrate seamlessly into industrial, PC, and other liquid cooling solutions.
What materials are used in the BC21 to ensure thermal efficiency?
We utilize high-quality aluminum fins in the BC21, which provide excellent thermal conductivity and a lightweight structure. This choice supports efficient heat dissipation critical for robust water cooling solutions in high-power applications.
Can the BC21 radiator be customized for specific industrial requirements?
While our standard BC21 is optimized for broad compatibility, we offer consultation services to discuss any specific customization needs in pump capacity, fan speed, or connector types to fit your particular water cooling system design.
What maintenance procedures are recommended for the BC21 radiator?
We advise regular inspection of the pump performance, fan operation, and connection fittings to maintain optimal performance. Following standard liquid cooling maintenance practices helps ensure longevity and consistent reliability in your liquid cooling solutions
setup.



Tip:
In order to create a good heat dissipation system after the installation of water cooling loop, please follow the following instructions before adding water cooling liquid:
1. When filling the water-cooled liquid, it is necessary to start the pump power repeatedly for several times. This repeated switching action can facilitate the water cooling liquid into the loop, and the air out.
2, do not make the pump idle! If there is no water cooling liquid, turn off the water cooling pump power immediately to avoid water pump damage.
3. Injecting water cooling liquid from the top cover of the water tank can reduce the probability of air entering the pump and prolong the service life of the pump.
4. In order to exhaust smoothly, slightly inclined system can be discharged in the air.
5. When testing whether there is water leakage, please place toilet paper or towel at the joint of the pipe joint to confirm the water leakage.