Re: [CAD_CAM_EDM_DRO] Linear Bearings....Where ??

In a message dated 1/4/2003 10:02:24 AM Central Standard Time,
gmamo@... writes:

>
> I am currently looking for sources to build my first XYZ CNC table.

George: I have used lots and lots of Thomson linear ball-bearings, both the
"closed" and "open" types, both in the Thomson aluminum pillow-blocks, and
just as "bushings" I insert into my OWN machined arrangements, and their
case-hardened shafting of several kinds from 3/8" dia. to 2" dia.

This is fine stuff, but it must be used with respect, as is the case with
just about ANY precision equipment.

I have looked at pictures in catalogs of THK and IGUS NON-round ways, in
which the balls run in "gothic-arch grooves" in the ways, but I have NO
experience with those alternate methods, although I hasten to say their
"sales pitch" in those catalogs makes those methods look GOOD for many
applications where the round-ways may-well be "just barely OK", if at all.

I imagine if you use a "search engine" on-line, you can find several makers
of these products. Here is a LINK for Thomson products:


http://www.thomsonindustries.com/sitemap.htm

Jan Rowland, Yank Troll




[Non-text portions of this message have been removed]