Re: [CAD_CAM_EDM_DRO] ballscrew thrust bearing

Thomas Powell wrote:

>What type of bearing is used to mount the ball screw onto the table on the
>motor side? Won't it see the full thrust of the table as well as supporting
>the screw?
>
>

Ideally, you would use a pair of angular contact ball bearings, or for
really
heavy thrust, a pair of tapered roller bearings. You would use a threaded
collar to adjust the preload that forced the bearings against each other.

If the bearing nest has a step of smaller diameter between the two bearings,
then the leadscrew just needs a step down in diameter for one bearing's
inner race to press against. the collar presses against the other inner
race.
The outer races are both pressed inward against the step in the housing.

Jon