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hr(bob) [email protected] hr(bob) hofmann@att.net is offline
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Default electric motor oil

On Jul 4, 11:25*pm, "Jon" wrote:
Please advise me.

What kind of oil should I use for a 1/3 hp electric motor?

The motor bearings have oil ports.

Can't I just use regular automotive motor oil? *Would gear oil be better?

It's the fan motor for my electric furnace (squirrel cage). *The original
1/3 hp motor blew up. *The furnace guy insisted I put a 1/4 hp motor in, but
the capacitor blew and the 1/4 hp motor blew up. *I had a surplus 1/3 hp
motor I bought. *It turned in the wrong direction so I reversed the stator.
It worked ok all last winter but I want it lubed up for next winter. *The
biggest problem is keeping the wires away from the fan blades because the
stator is reversed, but I've got them tied back pretty good. *Jon


That will teach you to listn to a repair person. He probably had a
1/4 motor that he wanted to sell, it's not often that a mfgr will put
a 1/3 hp motor in something that could get by with a 1/4 hp motor,
they're not nearly a dumb as they sometimes appear. ! use 20W motor
oil in a squeeze oil can to lube my blower motor. I was able to get
some small tubing into the lube holes at both ends of the motor and
bring them up to where its convenient for me to reach without having
to move any part of the motor assemb;y. This is a belt drive blower
so MUCH easier to work on. I try to oil it at the beginning and
midponts of both the heating and cooling seasons, 4x per year.
Present motor has been in for 10+ years, the original motor lasted at
least 25 years, probably 35 years.