Re: rolled ball screws

Ouch! At that price, you would do better just to buy a used cnc mill
that uses rotating ballnuts, yank them, and throw the mill away or
sell it as scrap.



--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Marcus & Eva" <implmex@a...>
wrote:

> Hi Les and Hoyt:
> Got the price for the rotating ballnut today...I think we'd all

better

> sit down!!
> $2342.00 USD was what I was quoted for one 25mm x 5mm pitch screw

15" long,

> plus one rotating ballnut.
> I do believe it's time to roll my own.
> Thanks both of you, for all your valuable suggestions.
> I'm going to get info on rolled screws and preloaded regular nuts

tomorrow.

> Then I'll knock up a nice housing with a couple of angular contact

bearings,

> bolt a timing pulley to the end of the nut, and call it done.
>
> Cheers (but not quite so cheery after seeing those numbers!)
>
> Marcus