Let's call it a shop fan, so I can answer with a clear conscious . The
egg shaped, and sticks in the bearing.
Wet a popsicle stick with Mobil 1
oil [ any weight ], and apply a tiny drop to each shaft bearing. You
should be able to tilt fan, and drip a drop on each end of shaft. Turn
blade by hand, see it turning easier ? Oil again, plug in, and enjoy.