The Small Size 40mm CPU Cooler Fan is an ultra-miniature high-precision cooling fan specially developed for ultra-small embedded computers, industrial control mini hosts, ITX ultra-thin hosts, POS machines, smart device hosts and other space-constrained mini electronic equipment. With an ultra-small 40mm × 40mm × 10mm compact size, this fan breaks the size limitation of traditional CPU cooling fans, and is the only dedicated miniature cooling solution for ultra-small CPU equipment with extremely narrow internal installation space, realizing efficient heat dissipation and stable operation of mini precision electronic equipment.

This 40mm ultra-small cooling fan adopts a miniaturized high-precision motor design, which integrates the high-efficiency brushless motor into the ultra-small fan frame through micro-processing technology. It abandons the bulky structure of traditional fans, and realizes miniaturization of size without losing heat dissipation performance. The ultra-compact size is specially adapted to the ultra-narrow internal space of embedded industrial control equipment, mini ITX ultra-thin hosts, and smart terminal equipment, and can be embedded and installed in tiny gaps that ordinary fans cannot adapt to, perfectly solving the heat dissipation blank of mini CPU equipment.

In terms of performance, although the size is ultra-small, the fan has excellent heat dissipation capacity. The optimized micro-blade structure and high-speed motor enable the fan to output stable airflow in a limited space, which can quickly take away the heat generated by the mini CPU during long-term operation, effectively solving the problem of heat accumulation and overheating crash of miniature precision equipment. The fan supports 12V DC safe voltage drive, with low power consumption, high energy efficiency, and no power waste during long-term standby operation of mini equipment.

The fan adopts high-precision double ball bearing configuration, which has ultra-high durability and stability. The miniature bearing system is filled with special low-temperature and high-temperature resistant lubricating grease, which can maintain stable lubrication performance in the range of -20°C to 70°C, adapting to the complex working environment of industrial mini equipment. The service life is up to 40,000 hours of continuous operation, which can meet the long-term uninterrupted operation needs of industrial control equipment and smart terminals.

In terms of mute and safety performance, the 40mm mini cooling fan adopts micro-vibration noise reduction design. The ultra-small blade runs smoothly with low friction, and the operating noise is lower than 25dB, realizing silent heat dissipation of precision equipment without acoustic interference. The built-in over-current, over-voltage and locked-rotor protection mechanisms can automatically cut off the power supply when the equipment is abnormal, effectively protecting the mini CPU and circuit system from damage, and improving the safety and stability of precision equipment operation.

The product has standardized 40mm mounting hole positions, with simple and convenient installation, suitable for all kinds of mini CPU heat sink matching and embedded equipment modification and upgrading. It is widely used in industrial control mini hosts, embedded industrial computers, supermarket POS cash registers, smart router hosts, mini advertising machine hosts, and ultra-thin ITX small hosts, providing reliable and stable miniature heat dissipation protection for various small-size CPU precision equipment.