Re: Taig mill (ballscrews)

At 01:31 PM 11/13/2000 -0700, you wrote:

>Any idea how well these would work on a bigger (Bridgeport size) mill?

If you look at the specs on BSA's website, the torque ratings are not all
that high. The nuts themselves are made out of a self lubricating plastic
and I'm not sure they could handle the stresses on a full sized mill, but a
phone call to BSA would probably be a good idea.

>Smoke
>-----Original Message-----
>From: Mike <mnels@...>
>To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
>Date: Monday, November 13, 2000 1:17 PM
>Subject: [CAD_CAM_EDM_DRO] Re: Taig mill (ballscrews)
>
>
> > >When you saw this mill did you look at the amount of space avalable
> > >for ball screws?
> >
> >For what it's worth, the BSA zero backlash screws used by MaxNC seem to
> >work very well for mini-mill CNC. Mine don't have any backlash that I can
> >yet detect. They're supposed to be self compensating for the life of the
> >assembly. The nuts on the 1/4" MaxNC screws are 0.64" in diameter and
> >1.18" long. The drive friction is similar to a standard acme nut. The
> >screws appear to be the "XC" series made by BSA at:
> >
> > http://www.ballscrews.com/html/2/2_index.html
> >
> >While the Taig uses 3/8" screws, the BSA XC screws might be an easier (and
> >cheaper) retrofit than ball screws.
> >
> >Also FYI... I looked at the Taig mill and liked the beefier 3/8" screws
> >and spindle motor assembly. But their CNC motor mounts are awkward and,
> >despite their claims, I'm not sure their design is any more rigid than the
> >MaxNC 10. The MaxNC was designed as a CNC mill from the outset while the
> >Taig is clearly a retrofit. The MaxNC 15 is very likely more rigid than
> >the Taig and offers much greater throat, travel and table size (but it's
> >also more expensive). The big downside to MaxNC is their slow and phase
> >based CNC hardware and software but you can get the mills without the
> >motors, controller or software if you want.
> >
> >
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>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the
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