RE: [CAD_CAM_EDM_DRO] ball screws

Joel -

I've purchased those, but in the extra accuracy class (.001"/ft vs. the
standard .003"/ft) directly from Thomson. There is a 50% premium for the
upgrade. This is the catalog page from Thomson for their mating ballnuts.

http://www.thomsonind.com/catalogs/alag/pdfs/page31.pdf

I haven't mounted them yet, so I can't tell you much about stiffness and
performance. I know thye have a few thou. of backlash unless you buy pricey
preloaded nuts or make your own using 2 standard ballnuts and a Belleville
washer.

Hope this helps,
Carlos Guillermo
VERVE Engineering & Design

> -----Original Message-----
> From: Joel Jacobs [mailto:jj@...]
> Sent: Monday, June 19, 2000 12:15 PM
> To: CAD_CAM_EDM_DRO@egroups.com
> Subject: [CAD_CAM_EDM_DRO] ball screws
>
>
> Hello,
> I see there are some reasonably priced ball screws in my MSC
> catalog. They
> are Thompson Saganaw units with a .625 ball circle and .2" pitch.
> I'd like
> to talk with anyone that has used these to retro-fit one of those
> Taiwanese
> mill/drills. They don't give the max load specs and I'm wondering if they
> would be rigid enough.
>
> Joel