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    12V/24V DC Brushless Cooling Blower Fan, 40mmx20mm

    The 40mm brushless cooling blower fan offers a voltage rating of 12 volt or 24 volt and a speed rating of up to 8000 rpm. ATO brushless DC cooling blower fan operates quietly with a noise level of 42 dB and is ideal for use in office or residential environments.
    SKU: ATO-CBF-4020
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    The quiet 3d printer blower fan comes in a size of 40mmx40mmx20mm and is available with a voltage rating of 12V or 24V. The dc centrifugal fan is small and powerful, perfect for DIY inflatables, cooling amplifiers, car parts, TVs, receivers and routers.


    Model ATO-SJ4020
    Rated Voltage 12V 24V
    Rated Current 0.16A 0.08A
    Rated Power 1.92W
    Fan Speed 8000 rpm
    Noise 42 dB
    Air Volume 0.09 m3/min
    Frame Heat shrinkable polyester, environmentally friendly & fire resistant
    Fan Blades Heat shrinkable polyester, environmental friendly & fire resistant
    Bearing Type Ball Bearing & Oil Bearing
    Lead Wire 1007 24AWG Red+ Black- 1007 24A WG Red + Black
    Motor Protection Impedance protection, reverse polarity protection, automatic restart
    Operating Voltage 3.5V~6.5V, 6V~13.8V, 12V~26.5V
    Operating Temperature/Humidity -10°C~70°C 35%~ 85%RH
    Storage Temperature/Humidity -40°C~80°C 35%~85%RH
    Weight 23g

    Dimension: (Unit: mm)

    40mm cooling blower fan dimension

    Performance Curve

    50mm cooling blower fan performance curve


    Cooling blower fans are widely used in various industries and applications where cooling is required, such as computer cooling systems, industrial machinery, and HVAC systems. These fans work by drawing in hot air and blowing it out to dissipate heat, thereby maintaining a safe operating temperature. They are also commonly used in automotive applications to cool engines and other components. Additionally, cooling blower fans are used in medical equipment and scientific instruments where precise temperature control is essential for accurate measurements and analysis.

    Cooling blower fan applications

    Tips: How does a cooling blower fan work?

    A cooling blower fan works by using an electric motor to spin a set of blades or impellers that force air through a housing or ductwork. The movement of the blades creates a low-pressure area behind them, which draws in air from the surrounding environment. The air is then forced through the housing or ductwork and out the other side, creating a flow of air that can help to cool down a space or piece of equipment.

    Cooling blower fans can come in a variety of sizes and shapes, depending on their intended use. Some are small enough to fit in a computer case and are designed to cool the internal components of the computer, while others are much larger and are used to cool down industrial machinery or large spaces.

    In addition to their use in cooling, blower fans are also often used for ventilation, air filtration, and to maintain a specific air pressure within a space or system. Overall, the basic principle of a cooling blower fan is to move air from one place to another, creating a flow of air that helps to remove heat and maintain a comfortable or safe temperature.

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