Thread: Worn keyway
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[email protected] smartin1019@verizon.net is offline
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Default Worn keyway

On Apr 2, 11:04*pm, "Wild_Bill" wrote:
I'm not aware of anything special about your partiular motors, but new
surplus motors typically sell for about $20-$40 from surplus sellers.

It might be worthwhile to look at few surplus sources, such as the Surplus
Center, or various other sources.http://www.surpluscenter.com/

You may need to drill a couple of mounting holes or shim the mount a little
for a different style of case, but a new motor is good insurance for your
business profits.
You might even be able to find new surplus blower wheels for your dryers
that have set screws for mounting instead of the threaded shaft of the
original equipment motors.

If you have a good motor repair shop nearby, they may have some used rotors
with threaded shaft ends, but I wouldn't consider it to be very likely.

Fractional-horsepower motors are cheap. When bought new, you can reasonably
expect that the centrifugal switch, a capacitor or a bearing isn't going to
fail in a month.

That shaft in the picture is mangled to the extent of being scrap. To be
repaired correctly it should have the shaft built up to full diameter with
weld, turned on *lathe, then have a new keyway cut in it.
It's unlikely that any epoxy or makeshift fix will be permanent.

I wouldn't know if this is a common problem with your dryers, but you'd be
wise to routinely check each machine. Keys with set screws would be more
secure for this application, but not if the screw threads would be in the
fiberglas material. If there is a steel, aluminum or brass hub molded into
the fiberglas fan, drilling and tapping an accurate hole over the keyway
should ensure that the key doesn't start wallowing out the keyway on the
shaft.

--
WB
.........
metalworking projectswww.kwagmire.com/metal_proj.html

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On Apr 2, 10:49 am, Jim Wilkins wrote:


Looks like the key rolled. How badly mangled is the hub?


it's a14 in. fiberglass fan the keyway on the fan seems to be in good
condition


This motor seems small enough that it may just be cheaper to replace it
than
to fix it.


Richard W.


Brand new motor is over $200 how much could it cost to have a new
keyway cut on the other side of the shaft



I went to the surplus site and I see how with a little modification I
could get a motor much cheaper. The other type dryer motors that i
have one of which burned out and cost me over three hundred has
approx. a 14 in. shaft with a thread on the end what would I do about
that.