Quote Originally Posted by andrewbond View Post
So I know I may be over simplifying and havnt researched this much but...

Would it be possible, and much simpler to use a hollow shaft stepper/servo and use feed the screw through the motor and mount the motor directly to the ballnut with a flanged hub

Andrew
Ye that would work great.!! . . . . Now You try finding an affordable motor with a 25mm hollow shaft.!!!!!!