Fans 40x40x20, volute

Blower Radial Blower Type Fan 40x40x20:

Centrifugal blower radial fans with a size of 40x40x20 mm are compact coolers widely used in 3D printers and other electronic devices for cooling and air circulation purposes.

Characteristics of 40x40 radial blower fans:

• Size
• Voltage
• Speed

The 40x40 radial blower type fan is commonly used for cooling the working area of a 3D printer, especially for cooling extruded plastic when printing with materials like PLA. The fan is mounted directly above the extruder and directs airflow onto the printed model to quickly cool it, improving print quality. Some 3D printers also use 40x40x20 fans to cool heat sinks and other components, preventing overheating.

How to Choose a 40x40 Radial Blower Type Fan?

Choosing a 40x40 Radial Blower Type fan depends on your specific requirements, such as the needed speed, noise level, airflow, and other factors. If you need to replace a faulty fan, start by removing the old one and checking its label for voltage and other specifications.

First, ensure that the size of the new fan matches your 3D printer's existing setup. The standard size is 40x40x20 mm (width x height x depth), but there are different size variations available.

Also, verify that the voltage of the new fan matches the power supply in your printer. Blower fans may be rated for different voltages, such as 5V, 12V, or 24V. The voltage is usually indicated on your 3D printer's power supply. If it's not labeled, use a multimeter to measure the voltage while following safety precautions.

You must select a fan with the same voltage as the previous one (5V / 12V / 24V) since connecting a fan with different voltage can instantly damage it.

After identifying the basic parameters, you can decide based on your preferences. You can opt for a more powerful but noisier fan or a quieter but less powerful one. However, avoid choosing a fan with too low of a speed, as it may not provide sufficient cooling or airflow, leading to overheating and potential damage. It’s advisable to select a fan with a moderate speed, such as around 5000 RPM (revolutions per minute). 

Always refer to the manufacturer’s instructions and recommendations when selecting and installing the fan in your system.