Re: [CAD_CAM_EDM_DRO] Re: Linear rail & ball screw size suggestions

In a message dated 11-Apr-02 00:57:42 Central Daylight Time, js3mc@...
writes:

> If dust is an issue with ballscrews what about ball bearing linear
> components?

Same, of course! But, at least Thomson, the only make with which I have had
mucho experience!, has very effective "V-seals" that push-off dust as the
linear bushings come down the round-ways. I have built a number of different
kinds of woodworking machines with Thomson linear BB'ings with great success,
and no "jambs" yet, due to sawdust-packing.

The ONE huge machine I made with also ball-screws had fits keeping dust out
of the ball-nuts, but there were no "rubber V-seals" on those, just bristle
"Sealeze" brand round brushes. Probably poorly installed when replaced,
which I was told was often, as this poor machine does 50 hours per week!

Jan Rowland, Old Troll with attitude


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