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I work at a shop that makes gears and roller chain sprockets for companies like AGCO, Meyer's, Miller, Gruett, and Arctic Cat. We also do the onesey-twosey jobs for farmers and the like, and I'm sometimes surprised by the amount of wear on the sprockets before they finally strip all their teeth. The customer always wonders "why in the heck that wore out so bad so quick? we just replaced it!!!" The first question we ask is if they replaced the chain also. They say "No, it wasn't broke so I put it back on." We just smile, tell them exactly why that sprocket wore out, and we gladly sell them another one for the same price. Lately I have been replacing chains on most of our equipment. I replace the really bad stuff right away even if the sprocket is worn, because the new chain will still make full contact on a worn sprocket, where the stretched chain wears on one tooth at a time, causing the wear in the first place. We have to replace the gathering chains on our corn head really bad, I already replaced almost all the other chains on the chopper. We got it for free so I do expect to spend some time on it fixing things, and the chains are my first priority. Donovan from Wisconsin
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