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,
12v fan.
John English
Is a fan bearing or bushing?
Jun 01, 2009
19 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
-- due to the hugely increased level of spam please make the obvious adjustment to my email address
Yes, it's on that data sheet. Ball bearings then.
Graham
-- due to the hugely increased level of spam please make the obvious adjustment to my email address
Most bearing types will act as a spring when you push in on the impeller.
greg
Only if the OP made a trypo, since the P/N on the data sheet is
EFB0512HA, not EFP5012HA.
JF
Even if that were true, which it isn\'t, how could that be used to
differentiate between ball bearings and sleeve bushings?
JF
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
Actually I don't belive they do ! The magnetic field causes the rotor to float.
Best Regards:
Baron.
Most that I've seen say "ball bearing" right on the label if they are, since it's a selling point.
inch,
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
-- due to the hugely increased level of spam please make the obvious adjustment to my email address
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.)
inch,
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Yup. Good catch... :-)
JF
a 2 inch,
1...ne many
hough.
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many
I was 'on the ball' at the time < groan > ;~)
Graham
-- due to the hugely increased level of spam please make the obvious adjustment to my email address
inch,
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P could indicate sintered phosphor bronze bushing while B indicates ball-bearing :)
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