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rebuilding an induction motor?

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Forum topic by derosa posted 874 days ago 1144 views 0 times favorited 7 replies Add to Favorites Watch
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derosa

1532 posts in 1437 days


874 days ago

Just about the time I was finishing up with some resawing I could smell a hot electrical smell coming from my bandsaw motor. I gave it a quick look through and didn’t see anything hot and glowing so I let it be and have just check up on it. It has taken about 40 minutes for the motor to fully cool off which seems a little long. There was no noise associated with the smell and a quick turn on with it cooled didn’t produce any odd noise either. Could I have just worked it too hard with the resawing or should I be looking at rebuilding the motor. It is a 1/2hp on my Delta bandsaw. A search of delta doesn’t seem to produce a parts list for their motors but is should be doable on these right. Any ideas where to find parts?

-- --Rev. Russ in NY-- A posse ad esse


7 replies so far

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canadianchips

1831 posts in 1599 days


#1 posted 874 days ago

Overheated could cost money !
Unless it is a special size for a special application, it is cheaper to buy a new one. Look for RPM, frame mount type and hp.

-- "My mission in life - make everyone smile !"

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jack1

1907 posts in 2629 days


#2 posted 874 days ago

You roasted the windings and brushes. It’s probably sealed and most of these take special stuff to fix. You would be better off just biting the bullet and get a new one with warranty… Not cheap.

Jack

-- jack -- ...measure once, curse twice!

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cabmaker

1287 posts in 1410 days


#3 posted 874 days ago

think baldor, buy it once. All they will need is the model and frame designations on your motor and they will take care of the rest.

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BobM001

388 posts in 932 days


#4 posted 873 days ago

If you are going to do a lot of resawing consider bumping up to a 3/4 maybe even a 1 hp motor. I read that it’s a good ideal to slow the blade FPM a bit as well. Helps the blade cool. Changing the motor pulley by 1/2 inch or installing an adjustable sheave pulley can accomplish this. Chances are that your existing motor is a 56 frame size cradle rubber mount. Know anyone that has a Grainger account?

-- OK, who's the wise guy that shrunk the plywood?

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derosa

1532 posts in 1437 days


#5 posted 873 days ago

Don’t know anyone with a grainger account. After seeing here that it isn’t worth rebuilding I’ll take it to the shop that is somewhat nearby and have them size me out a 3/4, maybe a 1hp if I have the spare cash.

-- --Rev. Russ in NY-- A posse ad esse

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ShipWreck

536 posts in 2354 days


#6 posted 873 days ago

If you still have the bandsaw in you’re workshop pictures, you can easily adapt that saw to a 1 hp.

View BobM001's profile

BobM001

388 posts in 932 days


#7 posted 873 days ago

I have a 14” Delta and once I saw how under powered it was with the OEM motor when using a 3/4” 3 tpi resaw blade I bumped the HP up to 1 HP. HUGE difference in performance. Then I installed a manual motor starter with overloads. It bolted right onto the riser post so that I don’t have to be reaching down to find the switch.

-- OK, who's the wise guy that shrunk the plywood?

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