inside air fan bearing lub ?

[Konstantin Bogach]

Hi all.

I took it out. It does not spin because of too high friction in the
bearing. Small dc motor with friction bearing.  Can these bearing be
lubricated? I remember long time ago I lubed such bearing and it stuck
forever in several days. So, not every oil can be used for it.  I don't
know what can be used and what can not be.
I have to confess that I don't know how friction bearing work, what it
is made of and what the science behind of it.  Is it porous material
which have lubricant in pores?

Konstantin Bogach.