The Apex of Cooling Technology: The 120x38mm High-Velocity DC Fan

In the domain of advanced electronic devices and industrial machinery, proficient thermal management is not simply a recommendation; it is a fundamental requirement. Excessive warmth is the adversary of efficiency, output, and long-term durability.

We present a potent and sturdy cooling solution, engineered to address the most severe thermal challenges: the 120x38mm Brushless High-Velocity DC fan. Uniting formidable airflow, substantial static pressure, and industrial-level construction, this DC fan stands as the ultimate selection for situations where cooling performance is non-negotiable. With availability in multiple voltage and speed options, it offers the adaptability and dependability necessary to protect your valuable components and maintain optimal operational stability.

Designed for Durability and Accuracy

An initial inspection of this DC fan reveals a design philosophy centered on resilience and practicality. Its materials and overall structure have been meticulously chosen to provide a long and dependable operational life, even during continuous use in challenging conditions.

• Sturdy Chassis and Impeller Construction: This DC fan is housed within a standard 120mm x 120mm square frame that features a substantial 38mm depth. This increased thickness, when contrasted with thinner profile fans, is vital for accommodating a more potent motor and facilitating a more aggressive blade design, which are both critical for generating its remarkable airflow and static pressure. The frame and the seven-blade impeller are both manufactured from premium Thermal Plastic that is compliant with the UL 94V-0 flammability standard. This rating indicates the material is self-extinguishing, which provides a crucial measure of fire protection for application in enclosed, high-wattage systems. The complete assembly has a solid weight of 255 grams, a testament to its dense, high-quality build and powerful motor.

• Advanced Dual Ball Bearing System: The foundation of this DC fan's longevity and performance is its dual ball bearing mechanism. In contrast to sleeve bearings that are susceptible to wear, lubricant evaporation, and performance decay in high-heat environments, ball bearings deliver superior endurance and consistency. This sophisticated bearing arrangement ensures a lower friction coefficient, permitting faster rotational speeds and providing a considerably extended operational lifespan. Furthermore, DC fans equipped with ball bearings can be mounted in any orientation—horizontally, vertically, or at an angle—without compromising their effectiveness or longevity, which affords maximum flexibility during system integration.

• Simplified Installation Process: The frame of the DC fan includes four standard mounting holes, each with a 4.5 mm diameter and spaced 105mm apart, guaranteeing compatibility with a wide variety of cases, enclosures, and heat sinks. It is equipped with clearly marked positive (Red) and negative (Black) lead wires of a generous 500mm (50cm) length. This provides sufficient reach for tidy cable management and connection to the power source, even within larger server enclosures or industrial control panels.

Setting a New Standard for Airflow and Static Pressure

A fan's principal function is air movement, and this model surpasses expectations in all measures. Through the availability of various performance levels, it can be customized to the exact cooling demands of a given application, spanning from quiet operation to maximum cooling force.

• Intense Airflow for Quick Heat Dispersal: This DC fan is a genuine workhorse, capable of displacing a massive volume of air. At its peak performance level, spinning at a remarkable 5100 RPM, it produces an astounding maximum airflow of 191.79 Cubic Feet per Minute (CFM). To provide context, this is equivalent to replacing the entire air volume inside a one-cubic-foot enclosure over 190 times per minute. Such an extreme rate of air exchange is vital for uses that generate significant ambient heat, including densely populated server cabinets, network closets, and energy-intensive crypto mining setups. Even at more moderate velocities of 3800 RPM and 3200 RPM, the DC fan still provides substantial airflow of 143 CFM and 121.55 CFM respectively, offering a balance between robust cooling and reduced acoustic output.

• Substantial Static Pressure for Targeted Cooling: In addition to sheer air movement, this DC fan's ability to generate high static pressure makes it uniquely suitable for high-resistance scenarios. Static pressure measures a fan's power to force air through obstructions like dense heat sink fins, air filters, or constrained chassis panels. This model produces a maximum static pressure nearing 24.44 mmH₂O (0.97 InchH₂O) at its highest velocity.

This potent, focused force ensures cool air arrives at critical components directly, rather than being diverted by impediments. The provided P&Q (Pressure vs. Airflow) graph illustrates this capability across its operational spectrum, enabling designers to precisely align the DC fan's performance with their system's specific impedance for optimal cooling results.

Dependable, Adaptable, and Secure Electrical Design

Supporting the DC fan's mechanical prowess is an advanced and trustworthy brushless DC motor and electrical architecture.

• Adaptable Voltage Selections: To ensure widespread compatibility, this fan is offered in three standard DC voltage ratings: 12V, 24V, and 48V. This adaptability permits integration into a vast spectrum of equipment, from consumer-grade computers and bespoke projects (12V), to professional audiovisual gear and automation machinery (24V), and even telecommunications and data center infrastructure (48V). Every voltage variant features a broad operational range (for instance, 7.0 V to 13.8 V for the 12V model), rendering the fan resilient against small power supply variations and ensuring consistent performance.

• High-Efficiency Brushless Motor: The brushless DC motor technology at its heart provides numerous advantages compared to traditional brushed motors. It functions with superior efficiency, converting a greater portion of electricity into rotational force while producing less waste heat. The lack of brushes eradicates a source of wear, significantly enhancing the fan's long lifespan and dependability while also diminishing electrical interference.

• Built-in Motor Safeguards: To protect both the DC fan and the equipment it cools, two critical protection mechanisms are integrated. Impedance Protection hinders the motor from overheating and failing should the blades become accidentally blocked. Reverse Polarity Protection ensures damage is avoided if the positive and negative power wires are mistakenly swapped during setup. These features render the fan exceptionally resilient and secure.

Dependable in All Conditions

Intended for mission-critical purposes, this DC fan is engineered for dependable operation across a wide spectrum of environmental conditions. It features an operational temperature range of -10°C to +70°C and a storage range from -40°C to +80°C, which guarantees it can function effectively in heated industrial settings as well as cold-start situations. This quality makes it an ideal cooling choice for equipment deployed in non-climate-controlled locations.

In summary, the 120x38mm Brushless High-Velocity DC fan is more than a mere component; it represents an investment in dependability. By means of its potent airflow, significant static pressure, durable ball-bearing construction, and robust electrical safeguards, it delivers uncompromising thermal performance. Whether one is constructing a high-performance computing server, engineering industrial automation machinery, or enhancing a critical network device, this DC fan provides the powerful, targeted, and trustworthy cooling required to maintain systems operating at their absolute peak.