Problems with Ridgid r4512 table saw Arbor

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Forum topic by VTmeDAVE posted 10-14-2013 10:49 AM 1836 views 0 times favorited 0 replies Add to Favorites Watch
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1 post in 1738 days

10-14-2013 10:49 AM

Topic tags/keywords: r4215 problem tablesaw arbor dado table saw

I just received my new Freud SD508 dado set and was really excited to try it in my Ridgid r4512 table saw and witness the perfectly flat bottom cuts that all the reviews claim. I loaded the saw up with both outside blades, (4) 1/8” chippers and (1) 3/32” chipper. As soon as I turned the saw on I noticed that there was a significant amount of vibration. (This saw has never vibrated, when i set it up I verified that it passed the nickel test). When i made the first test cut I was disappointed to see that there was a groove about 1/64” deeper than the rest of an otherwise flat bottom cut. It was easy to tell that this groove was cut by the first 1/8” chipper. So i removed that chipper, assuming that one of the teeth wasn’t ground properly, accounting for the vibration and groove. I was disappointed to find out that the next cut had the exact same problem, only the entire rabbit was now 1/8” narrower because of the chipper i removed from the stack-up.

After a bit of thinking i got the idea that the problem could be with the arbor of the saw, not the dado set. The threads of the arbor stop short of the small machined landing that a saw blade sits on. Between the threads and that landing is a portion of the arbor that has a smaller OD, which is wide enough for the chipper to fit in. This means that the first chipper is not concentric with the arbor, thus causing the vibration and non-flat rabbit.

So my question is: Has anyone else with this saw noticed this problem? Or do i have a lemon? The saw is about a year and half old, and i still have the receipt. I would hope this is covered under the 3 yr warranty, but I dont want to go through the warranty process if a new arbor has the same problem.

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