Help my Unisaw quit! Needs a motor

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Forum topic by Bieser posted 07-12-2013 10:10 PM 1109 views 0 times favorited 9 replies Add to Favorites Watch
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176 posts in 2035 days

07-12-2013 10:10 PM

Well my 40 yro Rockwell Unisaw decided to it was tired and the motor quit. I am wondering if any of you have replaced a motor. Couple questions

1. Where to find a motor? Do other manufactures make one IE. Grizzly? I read a while back that the motor mounts a very specific?

2. While I have this old guy tore apart are there any other things I should do upgrades, replacements etc.?

Thanks B

9 replies so far

View shampeon's profile


1775 posts in 2184 days

#1 posted 07-12-2013 10:15 PM

What exactly is wrong with the motor? Magic smoke? Just stopped working?

A well-used 40 year old motor could need a new capacitor and/or bearings, or just need a loose wire attached. I’d take it to a good motor shop before chucking it.

-- ian | "You can't stop what's coming. It ain't all waiting on you. That's vanity."

View cutmantom's profile


405 posts in 3036 days

#2 posted 07-12-2013 10:19 PM

don’t abandon it yet, check everything out first

View ,'s profile


2387 posts in 3548 days

#3 posted 07-12-2013 11:24 PM

If you confirm the motor is bad, we replaced our motor in our Grizzly saw that is pretty much exactly like the Unisaw, so I bought a 4 hp Leeson Unisaw motor. I had to make one minor modification to the TS cabinet and now the motor works great with our Grizzly. We also have a Unisaw so if we ever need a new motor, I know where we will go.

Locally I was quoted close to 600.00 for a 3 hp motor, but online I bought the 4 hp Leeson for just less than 400.00. I bought this motor:

Our saw was not old and had new arbor bearings from previous owner, so nothing else done except new motor. Motor is easy to pull and replace.

-- .

View Straightbowed's profile


717 posts in 2299 days

#4 posted 07-13-2013 12:47 AM

it wasn’t squalling and squealing a high pitch was it? my grizzly was doin that and it died but all that was wrong was the bearings went out on the arbor Just wondering

-- Stevo, work in tha city woodshop in the country

View Straightbowed's profile


717 posts in 2299 days

#5 posted 07-13-2013 12:48 AM

rplace the bearings it’s easy and they are fairly cheap

-- Stevo, work in tha city woodshop in the country

View DKV's profile


3940 posts in 2505 days

#6 posted 07-13-2013 01:02 AM

Short of coming to your shop with a hammer I’m not sure how I can help you make your Unisaw quit. Also, what would like me to make it quit doing?

-- This is a Troll Free zone.

View ToddJB's profile


7947 posts in 2131 days

#7 posted 07-13-2013 03:28 AM

Bieser, are you in Colorado? If so and you do decide replace your motor I have a few friends who would love to take that old motor off your hands. One is trying to restore a unisaw that was totally burnt in the Black Forrest fire. Let me know.

-- I came - I sawed - I over-built

View Bieser's profile


176 posts in 2035 days

#8 posted 07-13-2013 03:29 AM

Thanks for all the replies guys, I will let you know how it goes.


View Bluepine38's profile


3379 posts in 3086 days

#9 posted 07-13-2013 03:56 PM

I am redoing a 1949 Unisaw and one of the things I did was use masonite to form a dust ramp in the bottom,
two pieces form a V from each side and then an angled piece that slopes to the front. Anything is better
than the complete lack of dust collection available on the older units. I redid the old bullet type motor, as
shampeon said, take it to a good electric motor shop before you make any rash decisions. They told me that
if I replaced my old 1 horsepower motor, I would have to buy a 2 HP new motor to get the same performance.

-- As ever, Gus-the 79 yr young apprentice carpenter

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