Are you new to industrial fans? This resource center is for you. The three types of industrial fans supplied by nyb, classified by the direction of airflow through the impeller, are axial, centrifugal, and mixed flow fans. Depending on the amount of airflow, pressure and efficiency specified by the application, one of these types will be selected. Axial fans are typically used to move a high volume of air with low pressure.Centrifugal fans are typically used to move a medium volume of air at medium to high pressures. Our fan selection program is available to help direct you to finding the best fan suited for your application. It is always recommended to also talk with one of our experienced representatives about the selection process. Is there something else you have questions about or would like to see? Visit the contact us page.
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Bearings are the #1 priority, and you only get good bearing in good fans. You only get good fans if you pay for good fans. Good fans don't come cheap. I have Noctua, Thermalright (NOT Thermaltake), Corsair and Fractal design fans that have been used for 5-10 years constantly in various builds and none of them, not one, has failed yet. In fact, I've NEVER had, or seen, any Noctua fan fail in the last ten years or so. That doesn't mean they can't, but they are so well designed and use bearing of very high quality, so it is incredibly uncommon or simply the fan is so old, when it does.
The reason is, cheap bearings tend to start getting hot eventually. Hot bearings cause bearing failures because the lubricant dries out AND hot bearing ALSO result in motor failures because that heat is transferred to the motor. Fans that use expensive bearings tend to not have this problem for much longer than those using cheaper type bearings.
It's really not a matter of start/stop vs hours running, it's just a matter of RPM and bearing quality. Fan motor quality is a concern as well, because obviously a cheap motor won't last as long AND a cheap motor that is getting hot, can, reversely, cause bearing failures as well as the other way around.
But a quality fan, and it will last.
Companies usually sell both low and high quality models, so doing the necessary research to ensure you are not getting a cheap fan should be compulsory. If you buy a Noctua or Thermalright fan, you can pretty much guarantee you will get a high quality fan. Corsair has some very good quality, and some real turds. Antec, Cooler master, Thermalright and many others, have a lot of garbage and MAYBE one or two half decent models. They are mainly budget oriented, rather than designed for superior operation.
As rubix has mentioned, cleanliness is also a big factor. Running very high positive pressure configurations can be a killer on fan motors and bearings as well if they are not high static pressure models because a fan without a high static pressure capability will seriously struggle against the resistance and that creates additional heat. Heat is the enemy of any fan, and of most components in general. Anything you can do to reduce heat such as keeping clean and dust free, configuring for equal or negative pressure (Or at least not stupidly high positive pressure) and using quality components to start with are all helpful.
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