How do you tell if a fan is ball-bearing type or bushing type?
Says on the fan "Delta Electronics EFB5012HA, DC Brushless". It's a 2 inch,
12v fan.
Googling turns up nada.
Thanks,
Is a fan bearing or bushing?
Jun 01, 2009
16 Replies
12v fan.
is it this one?
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-Lasse
If it doesn't say otherwise, it's most likely bushing.
It is either 2 ball bearings or one ball bearing and one bushing. Which is which is not specified on the sheet.
Bob
Take it to bits and have a look, of course.
John
The detail will be in the manufacturer's datasheet associated with the exact part number.
Graham
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Yes, it's on that data sheet. Ball bearings then.
Graham
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Most bearing types will act as a spring when you push in on the impeller.
greg
I'll repeat, most fans I have come across have a spring loaded bearing. I don't trust that to tell motor specs, but I am just saying fact.
greg
I see what you mean. There's a missing zero after the EFB. I can't imagine many manufacturers having part numbers that close that were quite different though.
I assume your introduction of the leter 'P' is also a typo.
Graham
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Usually, when it's ball bearings it's a sign of quality to the end user so it usually is marked "ball bearings." (Of course it could still be a mix with one end a bushing and the other end a ball bearing.)
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I was 'on the ball' at the time < groan > ;~)
Graham
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P could indicate sintered phosphor bronze bushing while B indicates ball-bearing :)
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