[Lab] what kind of bearings for an A-Axis?

Darcy Whyte darcy at siteware.com
Tue Apr 5 09:34:05 EDT 2011

I got a small chuck that I believe is suitable for an A-Axis on a CNC


It has a 1/2-20 thread at the back. So I figure I can complete the A-Axis

-1/2 inch shaft with an inch of thread at one end.
-two bearings
-two pulleys and a belt
-one stepper
-some aluminum cut out to hold everything in place and to bolt down to bed

Obviously I need a bearing that can withstand thrust? Or do I? Does anybody
have any suggestions what bearings I should use?
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