Replies

1. 
   Ted W. | Dec 20, 2008 09:06pm | #1

   Dedicate the new one to trim only, and use the old one for framing and other heavy cutting, where it may get banged around.

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2. 
   Scott | Dec 20, 2008 09:51pm | #2

   Could be a bearing getting tired. If it's a good quality saw in every other way you could look into Re & Re the arbor bearings. Lube the drive gears while you have it apart too.

   ...or you could just give it to me....

   Scott.

3. 
   Marson | Dec 20, 2008 10:59pm | #3

   Not necessarily a bent arbor. Might first try replacing the washer(s) that hold the blade.

4. 
   RalphWicklund | Dec 20, 2008 11:02pm | #4

   Change the blade again and also mount it in another saw for an easy check for wobble. I had a wobble condition on a brand new LS1320 which was a warped blade. I've also had blades that were extremely sharp but not accurately ground so the cut was bad. Also had a bad set of blade washers that when tightened caused blade wobble. Changed those puppies and the wobble was gone.

1. 
   ramertt | Dec 22, 2008 03:59am | #8

   Thanks! I will give it a shot and change out the washers.    At this point it was an excuse to purchase a new saw! Which I did.  Like the previous reader had suggested I am keeping the old saw for framing.

    

   - Ramertt

1. 
   Scooter1 | Dec 22, 2008 08:46pm | #9

   I just replaced my trusty Hitachi C8F--I've had that rascal for over 11 years.  It was not cutting true on both sides of the fence.  Time to go.

   Bought a new one and the slide was off 90 degrees!  A full 16th at the end of the run!  Got another.  Same problem.  Got another.  Same problem.  My supplier tells me he went though 8 of the boxes and all had this problem.  The C8F is made in China.  The C10 is still made in Japan.

   Got the C10.

   Sigh........Regards, Scooter "I may be drunk, but you're crazy, and I'll be sober tomorrow." WC Fields, "Its a Gift" 1934

5. 
   BoJangles | Dec 21, 2008 12:05am | #5

   Is it a Crapsman??   They come that way out of the box!  The arbor also usually goes in and out 1/16" or so.

6. 
   3kings | Dec 21, 2008 12:36am | #6

   my dewalt was doing something similar all of a sudden my miters went coming together had the bearings done maybe 2 years ago now and still going strong

7. 
   hammer1 | Dec 21, 2008 01:14am | #7

   Most likely it's an arbor shaft bearing. Don't keep running the saw. If a bearing seizes it may gaul the housing. I have a Bosch that lost the bearing at the far end of the arbor, same symptoms you described. It was a bit of a job to get to. You had to dismantle the saw head completely. Mine is a press fit roller style bearing. It fits in the end cap at the far end of the motor. This is a weak link in many miter saws as well as other tools, these days. The saw should be back to new with the bearing replacement.

   The bearing at the blade end is usually nice and beefy. Why they put a dinky roller at the opposite end is a mystery to me. If it gets hot and melts the housing, or you ding it removing the old bearing, you have to buy a new motor housing. The bearings are common and available at any supplier. Too bad they didn't go up one size on the Bosch so a sealed bearing could go in. It might have cost them an extra 50 cents.

   Beat it to fit / Paint it to match

8. 
   Piffin | Dec 23, 2008 01:37am | #10

   You don't say what brand, but most of these are not direct drive - they have a belt drive coupling between motor arbor and blade arbor. The blade arbor is carried in a bearing or a bushing. The DW models are known for wearing out the bushing fairly fast and you can get a replacement kit.

    

    

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1. 
   ramertt | Dec 23, 2008 03:50am | #11

   Thanks, its a DW.  Ive had it for over ten years no problems.  I will look into the kit!