Paul wrote:
Max Muller wrote:
On Wed, 04 May 2016 04:02:46 -0400, Paul wrote:

Have you verified the fan is a maglev ? The documentation
here, says it doesn't use oil.

http://www.sunon.com/tw/products/pdf/maglev.pdf

Thank you for finding that nice 74-page Sunon Maglev fan reference.
It's interesting reading, But I need to find a cross reference
to figure out which fan it is that is the equivalent of the fan in the
Lenovo W510 Thinkpad FRUNO: 60Y5493 P/N: 60Y4981


It's as likely to be an issue with excessive friction
causes by dust and hair getting into the bearing
area, as being a need for the addition of oil.
And the device might not be designed for
easy maintenance.

This youtube video shows how a guy fixed the brushless fan.
https://www.youtube.com/watch?v=ewbMYAB0qwM

The guy took the fan apart, and merely cleaned and lubed
the shaft.

You need some realistic mechanical drawings of the
fan, to understand how easy it will be to disassemble
and clean/repair. It may be easier to track down that
information, if an actual Sunon part number is on it.
If it is custom designed as an OEM item by Sunon,
then there might not be any documentation available
for it.

It looks like a bunch of people have disassembled Sunon Maglev
fans, cleaned, lubricated, and put back together.

This guy literally drops the entire fan into motor oil:
https://youtu.be/vkLgqMPmmZg
https://www.youtube.com/watch?v=vkLgqMPmmZg


Here's another drawing of the fan.

http://www.comet.bg/files/custom/MagLev_scheme.jpg

( http://www.comet.bg/?cid=105&NewsId=961 )

There is no oil seal. There is a dust cap.
And while the fan is spinning, I would expect
a slight mechanical load on the bottom surface
of the spindle.

Paul