Re: linear bearing based on ground flat stock

--- In CAD_CAM_EDM_DRO@yahoogroups.com, wanliker@... wrote:

>
>
> In a message dated 5/22/2006 1:20:03 P.M. Mountain Daylight Time,
> eexgs@... writes:
>
> I would still need something for my cheap v-rollers to run on.
>
>
> Round or Square stock will work, mount the square with one corner

vertical.

> bill
>

I'm not sure what the advantage of a v-grooved bearing running on a
square (at 45 degrees) or round rod is over two normal bearings
running on the same. I guess its swings and round abouts, you only
need 4 bearings but you need 4 sleeves.

I have found yet another option, Igus do a range of bearings called
Drylin W. It consists of a hardened (anodized at least) aluminium
extrusion consisting of two round rods connected by a flat piece.
They sell there polymer bearings to run on them but I have never been
all that impressed with how freely they run (given I have limited
grunt and want max speed) so I'm thinking of buying the extrusion as a
quick way to get two parallel rods that are supported and mountable
and then just make some carriages, each with 6/8 bearings. If I could
cast the carriages from a fibre reinforced plastic I would be laughing.

Graham