Grizzly 10" table saw 3 hp motor problem

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Forum topic by woodlackey posted 12-07-2009 04:06 AM 6146 views 0 times favorited 7 replies Add to Favorites Watch
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3 posts in 2511 days

12-07-2009 04:06 AM

I have a girzzly 10” cabinet saw with single phase 3 hp motor. It recently failed and upon disassembly I discovered that the motor had a lot of saw dust inside. I suspect that the bearings failed for this reason. The motor is supposed to be totally enclosed. Rather than replacing what is probably a POS, I was wondering if anyone had tried other motors as I believe this is a part for part knock off of a Delta Unisaw. I don’t want to go through this again as my time is more valuable then dealing with faulty designs.

Thanks for your help

7 replies so far

View Jason White's profile

Jason White

113 posts in 2788 days

#1 posted 12-07-2009 01:36 PM

I’ve had this saw for about a year. Have not had a problem with the motor. I do have a 1HP dust collector attached whenever I use the saw, however. Is the motor still under warranty? If so, send it back for a replacement and try using dust collection to extend the life of the motor (or purchase a better-quality replacement motor).


View SKFrog16's profile


661 posts in 2618 days

#2 posted 12-07-2009 02:09 PM

Take a look at Leeson motors. I have always found them to be a superior product and they have a complete comparison catalog on line.

-- Methods are many,Principles are few.Methods change often,Principles never do.

View MedicKen's profile


1610 posts in 2880 days

#3 posted 12-07-2009 05:46 PM

I have seen numerous “totally enclosed” motors that have sawdust in them. It is not uncommon. Most of the time the dust gets in through the wiring connector box. I would replace the bearings and use window weatherstripping to help seal the box. You may want to also use some none hardening silicone and seal the motor where the capacitor leads enter the case if the leads are external.

-- My job is to give my kids things to discuss with their

View jussdandy's profile


157 posts in 2625 days

#4 posted 12-08-2009 02:25 AM

I have sold delta motors to grizzly owners, they do interchange or at least customers tell me they do, never looked, but I ask How it working and they tell me no problem I dont know the price of a grizzly motor but delta motors are pricey

-- Randy I have the right to remain silent, just not the ability ; )

View woodlackey's profile


3 posts in 2511 days

#5 posted 12-08-2009 02:46 AM


Grizzly wants about 270.00 plus shipping. I was not impressed with the lack of seals to keep their motor from sucking up dust. Both bearings have failed due to dust incursion. It looks as if the internal pressure of the fan sucks in dust even with dust collection. I have used many saws in the past and never seen this when the motors were rebuilt. Lots of dust in there… If it is not impolitic to ask, what are you asking for your 3hp single phase delta?


View bunkie's profile


412 posts in 2565 days

#6 posted 12-08-2009 02:53 AM

Almost all electric motors benefit from having what’s known as a NEMA mount. If you look at the information plate on the motor, it will likely list the NEMA mount number. All you have to do is make sure that the replacement motor has the same ratings, dimension, shaft size and orientation and NEMA mount. It sounds complicated, but it really isn’t. Check out the Grainger catalog for options.

-- Altruism is, ultimately, self-serving

View jussdandy's profile


157 posts in 2625 days

#7 posted 12-08-2009 04:36 AM

Im at home so I going by memory, a new 3hp phase delta motor is over 500.00 They contract out the motors, I think its marathon making them now, I put a new motor on my unisaw a few years ago and its a wegs I think, senior moment kicking in . but delta dosnt make them they contract it out so as bunkie says you can shop around and go by frame code and so on

-- Randy I have the right to remain silent, just not the ability ; )

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