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Post by deb193redux on Oct 9, 2012 14:36:05 GMT -5
Well, I just ordered a new arbor and bearings for my LS12. I don't think my old bearings are bad, but they are 30 years old and I can't see replacing the arbor shaft and putting the old bearings back on. New ones are not that expensive.
I have seen some wobble on the 12" blades for some time. I think it dished my 303C .050 blade. I can't see any dishing, but it started leaving larger and larger saw marks on the 1st inch of the cut. It is better if I use a 10" blade or if I use a thicker 12" blade, but I am bothered just knowing the wobble is there.
It turns out that they have changed over to an arbor with the inner flange permanently affixed. On my old LS12, there are two steel zinc-coated stamped flanges. These new ones are supposed to have a lot less wobble.
... so I hope the new parts make my slab experience even better. I am planning some marathon slabbing next month. I'll have 10 days off around thanksgiving, and I want to answer the question, "Just how many slabs can one guy cut if he runs two saws for every waking moment for 10 days?" LOL.
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QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,640
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Post by QuailRiver on Oct 9, 2012 17:23:39 GMT -5
Yes the new Lortone arbors do seem to stay truer than the old style. You are wise to go ahead and replace the bearings when you change the arbor. But good luck getting thirty years of use out of the new bearings! The only other thing I can think of that you may want to check and maybe go ahead and change, since you're changing the arbor, is the arbor pulley. The pulley can get out of true with use and cause vibrations that contribute to wear on the other parts.
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Post by deb193redux on Oct 9, 2012 20:34:41 GMT -5
good point. I did change the pulley out two years ago when I got it. The last owner had geared it to really low RPM. I also use a link belt that cuts down on vibration.
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