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Re: [ATM] Crayford Focuser

Don
   The problem with shoulder bolts is the minimum size is 1/4", and they 
are several thou smaller than the bearings ID. So that can allow some 
slop in the assemble. Also a bearing with a 1/4" id will have an OD of 
5/8", getting a little large for a focuser  A better mounting solution 
is to use hardened dowel pins which can be lightly pressed into the 
bearings and the mounting area.

James Crombie
http://www.jamescrombie.com

Don Ware wrote:
> When buying bearings, you should also consider shoulder screws to match the ID and thickness of the bearing.  They hold the bearing more firmly then a standard machine screw.
> 
> Don Ware
> http://webpages.charter.net/dware1/
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