[Andrew Schuetze]

Thanks for the input so far. We went back to the KOP wheels and shaft this season after a three years. The bolt on sprocket to the wheel eliminates the keyway issue of which was not in my thought process. Downsizing the shaft diameter would then require such a drive mechanism. We bent an axle this year but I am certian it was due to an over-zealous mechanic with the chain tensioner.


So 5/8 or 1/2 if using a keyway works, otherwise 7/16 or 3/8 can work if not using a keyway.

How about the IGUS plastic bearings? I'm looking through their catalog now and see uses in conveyor systems and the like.

Our team has no on-site milling or lathe capability. Our partners at Kelly USA, Lockheed Martin, have made some custom bearing blocks for mechanisms they help fabricate but that is it.