Sleeve bearing vs Ball Bearing........

poiihy said:

So we all know that ball bearing is better than sleeve bearing...
but is it?

Sleeve bearing looses its oil faster and starts rubbing and making noise and resistance. But all you need to do is put a drop of oil in it and it's good as new. While ball bearing lasts longer, you cannot oil a ball bearing fan (i think). And a sleeve bearing fan is quieter in the beginning. So all you need to do is oil the fans every once in a while (same time you would clean out the dust) and they will last, while a ball bearing fan cannot be oiled (I think). And also sleeve bearing fans are cheaper.

So are ball bearing fans really better? I think sleeve bearing fans would be better as long as you oil it regularly, and that is no problem because you need to clean dust out regularly too.

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poiihy said:

But bearing type doesn't have anything to do with the airflow... You probably think that because sleeve bearing fans are usually cheap poor quality fans and also have low CFM, and ball bearing fans are usually better quality and also have higher CFM.

But lets say we compare two identical fans, that both have the same voltage, speed, CFM, size, shape, and material, but only thing that is different is the bearing. How would it compare? You can oil sleeve bearing fans but cannot oil ball bearing fans.

Hmm, maybe I should post this in a fan forum

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