Quote Originally Posted by routercnc View Post
Hi WilliamTurner1

You only need the ballscrew axial support at one end, usually the stepper motor end. The other end is floating.

For alignment I would suggest mounting the floating end on a plate which is adjustable in as many planes as you can design in. You can then fine tune the position during running trials.
Magic! Thank you for confirming. I had figured as much looking at a THK 1m 1605 I have which has a floating bearing at its end (10mm bore vs 12mm axial bore) which is free to move in its housing, the other end is a beasty axial with double bolt holes.

Now I've got bearings and ballscrews sorted I need to sit down, do the calculations on motors + feedrates and also sort out drive (belts).

When turning the ballscrews (12mm bore + 12mm thread) should I also design in a woodruff key?