Re: [CAD_CAM_EDM_DRO] Shafting

In a message dated 11/8/2002 6:00:50 PM Central Standard Time,
jj5412@... writes:

> What about using supported shafts with open linear bearings? You could
> use a lot smaller shafts.
>

Well, that's true, and it "isn't". Sometimes, the mechanicals preclude
supported shafting, as was the case when I built the large X-Y table.

Second, the BALLS get very small, even though the "published ratings" say the
linear-bearing bushings will "handle" the planned load, and the RPM of the
tiny balls will wear them and the shafting very rapidly (or, at least "groove
it").

I support all the shafting I CAN, when I do something, but the "open"
shafting is the least occlusive, when you want to have access (and SEE!) what
you are doing!

Jan Rowland


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