jason0012 Posted May 17, 2017 Share Posted May 17, 2017 I have a Grizzly 2x72 that has been running fairly well. About a week ago it developed a serious vibration that got proggressivly worse. I checked the contact wheel and shaft for run out with an indicator. It showed only .0002 so that doesnt seem to be the problem. I removed the 10 inch wheel and installed the 8 and - no vibration! I ground about a dozen blades on the 10 inch before it started doing this and it has no visible damage. I have just started a new job so havent gotten to try switching back yet. Any Ideas what is wrong? Could it just be dust build up? Quote Link to comment Share on other sites More sharing options...
Steve Sells Posted May 17, 2017 Share Posted May 17, 2017 bearings is my first thought Quote Link to comment Share on other sites More sharing options...
Kevin Olson Posted May 18, 2017 Share Posted May 18, 2017 You need to do the a-b-a test with the 10 inch but I sure looks like the culprit. Vibration equals imbalance. The piece is round so one side is heavier then the other. And what Steve said above. Quote Link to comment Share on other sites More sharing options...
JHCC Posted May 18, 2017 Share Posted May 18, 2017 37 minutes ago, Kevin_Olson said: You need to do the a-b-a test What's the a-b-a test? Quote Link to comment Share on other sites More sharing options...
rockstar.esq Posted May 18, 2017 Share Posted May 18, 2017 Applied Behavioral Analysis testing? "Tell me wheel, why do you think you're getting wobbly?" Quote Link to comment Share on other sites More sharing options...
JHCC Posted May 18, 2017 Share Posted May 18, 2017 4 minutes ago, rockstar.esq said: Applied Behavioral Analysis testing? "Tell me wheel, why do you think you're getting wobbly?" More like "Wheel, this vibration is an unexpected behavior!" Quote Link to comment Share on other sites More sharing options...
Kevin Olson Posted May 18, 2017 Share Posted May 18, 2017 A-B-A. 10inch =a. 8inch=b. Put the 10inch back on. This test will prove 10inch is the source of vibration Quote Link to comment Share on other sites More sharing options...
jason0012 Posted May 23, 2017 Author Share Posted May 23, 2017 I can identify the problem as being the 10 inch wheel. I see no visible damage. There are no tears, bumps or holes in the rubber. The bore looks ok and there isnt any build up on the hub anymore, but still it vibrates terribly. The dial indicator shows no out of round or wobble. Could the rubber have embedded with metal shavings I cant see? It does look somewhat worn, after less than 2 months, but not to a point where it looks ragged. From the begining both wheels seemed very soft. I wonder if it may be possible to replace the rubber tires? Is there an ideal durometer for contact wheels? Is there a good product for this? My next step will be to turn an arbor for the lathe and see if I can sand the face a smidge and smooth things out. Then to build a balancer... Quote Link to comment Share on other sites More sharing options...
JHCC Posted May 23, 2017 Share Posted May 23, 2017 Have you tried contacting Grizzly for a replacement? Quote Link to comment Share on other sites More sharing options...
Jammer Six Posted May 26, 2017 Share Posted May 26, 2017 Tough love. The wheel needs tough love. When it gets tired of being ignored, it will agree to act right. Quote Link to comment Share on other sites More sharing options...
jason0012 Posted June 2, 2017 Author Share Posted June 2, 2017 I contacted Grizzly and they sent me a new wheel. Problem solved, but I still would like to know why it took a crap on me suddenly like it did. Quote Link to comment Share on other sites More sharing options...
Frosty Posted June 2, 2017 Share Posted June 2, 2017 1 hour ago, jason0012 said: I contacted Grizzly and they sent me a new wheel. Problem solved, but I still would like to know why it took a crap on me suddenly like it did. You looked like a statue to it? Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.