Delta Unisaw 85 010 Motor Brushes

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Forum topic by Nilez posted 05-07-2017 12:48 AM 1799 views 0 times favorited 3 replies Add to Favorites Watch
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2 posts in 988 days

05-07-2017 12:48 AM

Topic tags/keywords: question tablesaw motor brushes motor brush

Hi all,

My father in-law (F.I.L.) has a Delta Unisaw from the 50’s he’s been using for the last couple decennia.
He told me his motor wouldn’t start smoothly any more; so we got to investigating the issue. It seems the brushes are almost gone and when we run it w/o the brush covers, it’s very sparky the first 10-ish seconds.

Our conclusion is that the brushes are worn and we need new ones. My F.I.L. said he used to buy em at a local store that is long gone. And now we don’t know where to find em nor what exactly to ask for.

Does anyone know which brushes we should be looking for? (and where to get em?)

Thanks for reading!

Here’s an image of the ID plate on the motor:

3 replies so far

View MrUnix's profile


7582 posts in 2802 days

#1 posted 05-07-2017 12:53 AM

Check out this Wiki article over at the VM site for lots of good info about your motor:

Unisaw Bullet Motor Repair
(Brushes are addressed towards the bottom)


-- Brad in FL - In Dog I trust... everything else is questionable

View Nilez's profile


2 posts in 988 days

#2 posted 05-07-2017 01:09 AM

Thanks so much Brad, I don’t do much in the ways of woodworking and didnt think there’d be such extensive info online. I think we’ve been helped!


View runswithscissors's profile


3081 posts in 2628 days

#3 posted 05-08-2017 04:40 AM

Don’t know about the bullet motor, but I’m surprised that would be a universal motor. Unisaws normally have induction motors. I’m puzzled what would be making sparks.

Okay, I looked at the bullet motor repair, and in the immortal words of Popeye, “Well blow me down.” Did not know there would be brushes on an induction motor. Maybe has to do with the “repulsion” part of the technology? I do remember 50 years ago having a repulsion/induction motor on a Rockwell TS, but never really understood what that meant.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

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