ShopPro 25 has terrible vibration and trips circuit breaker

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Forum topic by bobkberg posted 12-03-2021 01:19 AM 256 views 0 times favorited 3 replies Add to Favorites Watch
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444 posts in 4415 days

12-03-2021 01:19 AM

Topic tags/keywords: electric motor shoppro shop pro bearings sander

I have a Performax ShopPro 25 (bought used, don’t know how old), which has been working nicely for me for several years. This week, it started making horrible noises and vibrating badly, but only intermittently.

Today, while trying to troubleshoot the problem it now makes horrible noises, and trips the circuit breaker.

My guesses as to the problem are the motor, or possibly the bearings for the drum.

However, the drum rotates without and resistance or vibration, Since removing all the sheet metal to test the motor is going to be time consuming, I’m hoping for some pointers before doing all that work.

This problem occurs with no load on the sander at all – just starting up the motor.

All (reasonable) suggestions, questions, and observations are welcome.



-- Bob - A sideline, not how I earn a living

3 replies so far

View bigblockyeti's profile


8040 posts in 3062 days

#1 posted 12-03-2021 03:03 AM

I think starting by removing the belts to check for any play in the bearing for the sanding drum and the motor would be the first thing to do. I would then run the motor with no belts to see if it’s making any unusual noise and if it’s getting up to full speed.

-- "Lack of effort will result in failure with amazing predictability" - Me

View Aj2's profile


4234 posts in 3140 days

#2 posted 12-03-2021 03:04 AM

My first suggestion is to get rid of it throw it away or sell it. Second suggestion is to replace bearings

Good Luck

-- Aj

View bobkberg's profile


444 posts in 4415 days

#3 posted 12-03-2021 05:38 AM

Thank you bigblockyeti. I will try that.
Thank you aj2 for your second suggestion. It’s been giving me very good service for at least 5 years, so I’m reluctant to get rid of it.


-- Bob - A sideline, not how I earn a living

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