stupid fan motors

 you know the kind, no rotor winding, bronze bearings, on every kind of
fan from desk fan to window fan to A/C fan to dehumidifier fan to vent
fan, where the bearings always gum up after two years and you can't
get enough oil into them to get them back to life, so first they have
trouble starting up, then they get slower and finally burn out the
windings.

Anyway, isn't there somewhere a person can get a decent replacement
with decent bearings? even (wow!) ball bearings? or some design with
an oiling port?

or failing that, a source for dirt cheap replacements where the cost
is as low as the quality so I don't have to keep ordering replacement
motors for the dehumidifier every two years for $30?

  Refrigerator fans are designed to run continuously.  Remember a story where
the Air Force was having trouble with similar mil-spec fans used in missile
silos.  They switched to a commercial refrigerator fan which lasted much
longer and cost much less.

 
Now that I look at it again, the fact jumps out at me that the fan is
mounted behind the condensor coil, so that the hot air washes over it.
That can't be good for the stupid sleeve bearings.

 
http://www.grainger.com/Grainger/wwg/viewCatalogPDF.shtml?CatPages

Fan motors with ball bearings are roughly twice the price of sleeve types.

 
ball bearing motors are noiser too