How to Choose DC Axial Flow Fan More Reasonable

When choosing DC axial-flow fan for the first time, because there is no concept about the volume and noise of DC axial-flow fan, and the price of DC axial-flow fan may not be clear, it is impossible to choose DC axial-flow fan at all. If that's the case, it doesn't need to be done. It takes only three steps to get it done easily.
 
Step 1: Select a DC fan of the largest size that you think you can install and determine the voltage. Ask the DC axial fan supplier to do a test to see the effect. If the sample is not suitable, confirm the relevant parameters by the following methods
 
Because the speed of the fan is proportional to the voltage, the voltage will be up 20% or down 50%. If you adjust to which voltage value, it is possible to test the air volume and noise. Note down the voltage value at this time. Please ask the supplier to design the 12V fan according to the speed and the volume of the voltage.
 
Step 2: Redesign DC axial fan according to the parameters confirmed by customers. (Of course, if the first step can't achieve the desired effect anyway, you need to change the size of the fan. At this time, you can discuss the new size with the fan supply and then follow the first step.)
 
Step 3: According to the product warranty time and the bad environment, choose what kind of bearing to use, which directly affects the cost of Dc axial fan. The service life of oil bearing is 20,000 hours at normal temperature, and that of double ball bearing is 50,000 hours at normal temperature. In high temperature and dusty environment, the service life of oil bearing decreases faster than that of double ball bearing. Of course, the price is cheaper.