Re: [CAD_CAM_EDM_DRO] Alternative shafts for linear bearings

JanRwl@... wrote:

(snip)

>I have found even that "expensive" case-hardened shafting will develop
>"grooves" where the ball-lines roll, over years, so the use of softer than
>RC-60 steel simply won't last useable over a few hundred inches of travel, at
>least if your LOADING is within a practical realm!
>

I have just looked at an application where I had a FRELON lined bearing
doing daily duty. Unknown how many cycles, but I'm here to tell you way
more than I can count. Very impressive actually.

I wonder if using Frelon lined bearings would make those lesser hardened
shafts last longer. They are slightly less money than Ball Units and
claim to have much more load capability because of the surface contact
patch available rather than just a little "line" of balls.

I've got some sections of the "coated" aluminum rail for Frelon bearing
applications.... Even that rail is lots cheaper than the typical case
hardened steel.
I just didn't build anything with it yet.

Has Anyone used this aluminum "coated rail from Pacific on an
application yet ??

I could easily see using Frelon on my next Plasma Project, maybe even a
Router/Engraver the way this takeout looks and feels.....

Chris L

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