"Gunner Asch" wrote in message
...
On Sun, 22 Aug 2010 16:06:21 -0700, "Steve B"
wrote:

I have an old cement mixer. The shaft size that is on there for the steel
wheels is about .7000+. I have some rubber tires with tubes that have a
hub
axle diameter of .625, or thereabouts. I know that all rods come in
standard fractional sizes. Is there some standard deduction when one is
calculating a shaft versus an opening size so it will just slide on, and
not
be a press fit requiring hydraulics, beating with a large hammer, or
immersion in dry ice or liquid nitrogen? This is going to be max 200 rpm
for 200 yds, so it is not critical. Is there a place to buy this slightly
less than nominal diameter material in a cold rolled, so it will be a
little
stiffer than the normal rod?

Thanks

Steve

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Why not take a piece of 3/4" rod, and turn the ends down to 5/8" and put
a cotter pin in each end so the wheels dont fall off? If you want to be
fancy..you can thread both ends for .625 and put a lock nut on both
ends?

Gunner

That would require knowledge, expertise, and a lathe, of which I have none.

Steve