Problem with a belt sander

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Forum topic by MrRon posted 09-04-2012 07:35 PM 1138 views 0 times favorited 5 replies Add to Favorites Watch
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4348 posts in 3023 days

09-04-2012 07:35 PM

I have an older PC 3” belt sander. I like it and it does a good job, but I find it hard to keep the belt tracking. It “walks” off in one direction and when I turn the adjustment, it walks to the other side. I can never keep it on track without constant steering with the adjustment screw.

5 replies so far

View Tennessee's profile


2518 posts in 2294 days

#1 posted 09-04-2012 07:39 PM

It could be a couple things. Does the drive roller have any play in it? What brand belts are you using, and are they fairly true? (Stand one up on a flat bench on edge and see how it stands.)
Is anything vibrating on the front end, and does the front roller have any play in it?

Lots of possibilities.

-- Tsunami Guitars and Custom Woodworking, Cleveland, TN

View MrRon's profile


4348 posts in 3023 days

#2 posted 09-04-2012 07:56 PM

If I run it without sanding, the belt runs true. It’s only when I start sanding does the belt start to wander.

View bandit571's profile


18183 posts in 2463 days

#3 posted 09-04-2012 08:17 PM

Check the tensioner? If it acts up when you start to use it, then the belt is not being held tight enough.

-- A Planer? I'M the planer, this is what I use

View MrRon's profile


4348 posts in 3023 days

#4 posted 09-05-2012 04:22 PM

Thank you all. When I get back to my shop after the weather clears up, I will check.

View Bill White's profile

Bill White

4767 posts in 3740 days

#5 posted 09-05-2012 04:26 PM

Is the tracking knob holding?
I had the same prob on my old (won’t die) Ryobi sander. The knob would rotate when sanding. I replaced the tension spring under the knob and solved the tracking issue.


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