Delta 31-120 sander question

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Forum topic by MStaples posted 06-05-2011 10:10 PM 1890 views 0 times favorited 1 reply Add to Favorites Watch
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3 posts in 2700 days

06-05-2011 10:10 PM

I have a new Delta 31-120 disc sander and it seems to have too much runout (.01” at the edge of the 12” disc.) Without any experience in this area, I’d appreciate general advice as too whether this is unacceptable runout (beyond the measured value, it’s enough runout that I can see it by eye which makes me think it’s excessive).

I’d like to remove the disc and make sure it’s mated squarely to the spindle (is that the right term?) by checking for grit or paint, but before I go cranking on the hex bolt that secures the disc at its center, I hope someone with experience doing this can tell me which way to turn the bolt to loosen the disc. There is nothing in the manual about doing this so I fielded this question to Delta on-line, but got no response.

In general for a tool of this type, can you say that if the disc rotates counter-clockwise (as the Delta disc does), that the bolt holding it should be rotated counter-clockwise to loosen the disc?

Thanks very much,

Michael Staples

1 reply so far

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Mickey Cassiba

312 posts in 3175 days

#1 posted 06-05-2011 11:29 PM

IIRC,and I could be wrong, the screw is a standard screw…lefty loosey. I do recal clearly that this tool had a lot of issues with the platten wobbling. Mostly bent spindles, from shipping/handling damage. Lotsa returns on this model.

-- One of these hammers oughta fix that...

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