A pair is $300 which is still alot. But after reading this thread, http://www.cnczone.com/forums/showth...=abec7+nc+cams, I realized that it would probably be money well spent. I would only get the pair for the lower bearings but I'm am concerned if the spindle housing is toleranced well enough for the bearings.
Bob -
Where are you getting your pulley to fit the spindle shape? Any ideas how your going to tension the belts yet?