When we choose a cooling fan, the first thing we must consider is the service life. How long can it be used? Then what factors do the service life of the cooling fan depend on? The main is the bearing, then the ambient temperature, the balance of the fan blade
1. Bearing: The life of the double ball bearing is nominally 50,000 hours, and the life of the oil-impregnated bearing is nominally 3 hours (under normal temperature)
2. Ambient temperature: the higher the temperature, the shorter the service life, especially the oil-bearing cooling fan, which is particularly sensitive to high temperature
3. The balance of the fan blades: the fan blades are poorly balanced and shake badly. After a long period of time, noise first appears, and then it may be stuck.
Although in the mold design, we have tried our best to make the fan blades more balanced. If the fan blades are still shaking during operation, we have a high-precision dynamic balancing machine to correct and repair, so that the fan blades run more smoothly and have a longer life. Long, this is ignored by many cooling fan factories