Quote Originally Posted by Robin Hewitt View Post
10mm for the bearing, 10mm for the nut, say 1mm protruding, 21mm total.
My point was not knowing those dimensions means the length of ballscrew directly between the bearings is unknown, which is a critical dimension.

Quote Originally Posted by Robin Hewitt View Post
Doesn't really matter how far the thread goes inside the bearing, the big axial load from the Belleville washers overwhelms all the other loadings.
I guess so long as the mounting surfaces are accurate, but there's no reason to have the thread far in the bearing surface.