I'm upgrading my homemade XYZ cnc machine to use ballscrews - 3 lengths,30", 24", and 12". Using the 5/8 rolled ballscrew with thompson ballnut; simular to the ones I see commonly used offered by NOOK.

Unforetunately, I dont have a lathe - I have to get someone at machine shop to turn down the ends of my shaft. (Please dont reply and advise me to "simply" do what comes so easily for those who own lathes)

My original idea was to press-fit one end into 1/2 bore support bearing like this:

http://cgi.ebay.com/NEW-1-2-PILLOW-B...ayphotohosting

and on the other end, have a slightly loose or snug fit the same bearing; to allow heat expansion.

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Does anyone have any advice if this would/wouldnt work ?