DC axial fans spanning 25mm to 200mm in diameter embody versatility, catering to thermal management needs across consumer, industrial, and commercial sectors. This size spectrum enables precise alignment with spatial constraints and airflow requirements, from microelectronics to heavy machinery.

Engineering for Dimensional Flexibility

Miniature Fans (25mm - 60mm): Designed for ultra - compact devices like IoT sensors and medical wearables, these fans integrate brushless DC motors with 0.1 - 1W power consumption, achieving up to 5 CFM airflow. Blades use aerodynamic NACA profiles to minimize turbulence, while housing materials like PEEK ensure chemical resistance.

Medium - Size Fans (80mm - 120mm): Common in laptops and server racks, these models feature PWM speed control (10 - 100% adjustability) and tachometer feedback. A 120mm fan at 2000 RPM can generate 120 CFM with <35 dBA noise, balancing cooling efficiency and acoustic comfort.

Industrial - Grade Fans (140mm - 200mm): Built for HVAC systems and manufacturing equipment, these fans use reinforced aluminum frames and IP54 - rated enclosures. A 200mm model with a 24V DC motor can sustain 250 CFM airflow in 50°C environments, supported by dual - ball bearings rated for 70,000 hours.

Cross - Industry Applications

Aerospace: 40mm fans cool avionics during - 40°C to +85°C temperature cycles.

Automotive: 80mm IP65 - rated fans ventilate EV battery packs, resisting vibration and moisture.

Renewables: 150mm fans dissipate heat from solar inverters in desert climates (up to 60°C ambient).

Performance Optimization

CFD simulations refine blade pitch and hub diameter ratios: smaller fans prioritize high static pressure (e.g., 25mm fans achieve 0.5 in - H2O pressure for heatsink cooling), while larger models optimize free - air flow. Some 120mm fans incorporate variable - pitch blades, adjusting automatically to changing thermal loads.