Re: [ATM] Polishing Machine Shaft size

[Kevin MIchael Zabbo <chaosopher23@yahoo.com>]

30 inches...  that's a heavy.  I'll take a guess that
1.5" won't be big enough to hold it steady.  Go with
3" and you won't have a problem with the machine
developing a personality, and keep the shafts short if
you can.

Kevin, Seeker of the Darkness
(Somewhat central Mississippi, wishing for the coast,
where they KNOW how to make a Margarita)

--- William Marriott <bmarriott@pacbell.net> wrote:

> Hello;
> 
> So, I have decided to build a polisher for finishing
> my 20" RC primary.  The large Strasbaugh polisher I
> have at work that will accomodate 20" does not slow
> down enough (35rpm spindle and about the same
> eccentric) and the eccentric is linked to the same
> motor as the spindle.  Great for polishing out the
> grey, but not for final work.
> 
> I need to buy a couple of pillow block bearings, and
> was wondering about shaft diameter.  I was thinking
> about going with 1.5" diameter, but the machine is
> being built to accomodte maybe up to 30+ "s
> 
> I would think 1.5" diameter shaft would be stout
> enough, but have no real data to back that up.
> 
> Comments from machine builders or others?
> 
> TIA
> 
> Bill Marriott
> 
> Guitars and Stars, the best of two worlds
> http://HagstromWorld.com
> http://StarlightOptical.com
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> ATM mailing list http://www.atmlist.net/
> 


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