Re-wiring a electric motor?

A

Andrew Holley

Well-known member
This afternoon I burned up the motor on my dust collector. The motor was a 5 hp 220V from Northern Tool. Didn't hear or see parts coming flying out, but a ton of smoke and sparks. I guess I got my money out of the motor as I think I paid about $200 almost fifteen years ago.

I remember back growing up on the farm my father had a old guy that would rewire silo unload motors, do they still do that? Any idea how much it costs? Or do I just go buy another?
 
labor prices make it difficult too rebuild electric motors i tried too have a transformer rebuilt and i was priced more than a new machine from 3 local rebuilders id try and find a good new motor
 
I guess I am going to run into the same thing, however, I was just visiting the Northern website, thinking I might run down to Milwaukee and pick a new motor tomorrow. Their price was $470, ooch. Guess I will be waiting until Monday to visit a couple shops.

Been surfing the web and found a couple other place with signficantly cheaper motors, but they have this saying

"Single-phase motor is designed for compressor duty applications which require high breakdown torque"

What is "high breakdown torque"?

My dust collector is big, the impellar is made from 1/4" flat stock, which mounts directly to the motor shaft. Wondering if the impellar was out of balance, causing the bearings to go and the armatuar to touch something?
 
Mike, how the heck are you?

The burned up motor was spinning at 3,450 RPM, 3,600 RPM would work, but of course has to be single phase.

Don't have your phone number any more. Shoot me a pm with it and I will call you tomorrow.

P.S. you should swing by and see the boat now, she's flipped back over.

Andrew
 
Andrew I just had a fan motor for a boiler rebuilt it cost $112 To replace the motor would have cost in the neighborhood of $300 The motor was completely cleaned and rebuilt including a paint job.

The yellow pages is where I would start. In any city where there is manufacturing there should be electric motor rebuilders. The thing I would be concern about is how good the motor was to begin with. I had friend now passed on who sold wood working machinery His comment was the difference between a lot of machines was the motor they used, all other things being equal.

I had my work done in Wausau
 
ya might try northern hydrolic just a thought or grainger if you have any access too industrial repair mechanics (ie hvac techs or building maintainance guys)
 
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