Thread: Shaft slop help?
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Unread 31-01-2014, 07:11
Arpan Arpan is offline
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Shaft slop help?
Hi all!

We're making a west coast drive this year. Ours is "unique" in that instead of putting sprockets and chain like normal people do, we're using 15mm belts on the outside of the aluminum tubes, making our cantilever fairly long. The FEA indicated that even under worst case loads the bearings and tube would be fine, but that the shafts might take a little bit of heat.

Because of this, we decided to go with hot-rolled steel hex shaft from mcmaster carr. Everything was great until we put the shafts in. They appear to be able to wobble in their bearings by a few mm, meaning that the wheels wobble by up to an eighth of an inch.

Anybody know a good, simple solution to this problem other than replacing the shafts or where I could get tighter toleranced steel .5" hex shafts? (we can harden them ourselves if need be)