Re: [CAD_CAM_EDM_DRO] ballscrew thrust bearing

Yup, that is how I think I am going to do it.

Thanks,

Thomas

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, December 26, 2003 8:13 PM
Subject: 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
>
>
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