Re: [CAD_CAM_EDM_DRO] Ballscrew mounting

If you have a standard Chinese (giant laugh) mill drill then the original X
axis ends plates were probably bored for a 17MM shaft. On my mill drill
ballscrew covertion I just mounted the end plates in my 4 jaw chuck and
indicated the bore and the face into a 0-0 alignment. Then I counterbored
the end plates for 17mm ID radial bearings.
On the Y axis I bore that bearing housing similarly. I reused the existing
thrust bearings used on the X and the Y axis.
The Y axis ball nut drive bracket fits in the slot in the Y axis and
protrudes down from the saddle. This supports the ballscrew at all times but
you can loose an 1" of Y axis travel.
Hope this helps.
Dan