Re: Need help designing ballscrew

Do you mean for a Boss/interact series? if so what ball screw? (X-Y-
Z) I may have some pictures if that would help?
Fred

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "cnc_4_me" <cnc4me@g...>
wrote:

>
> I would like some advice from those of you who have seen factory

CNC

> ballscrew setups for Bridgeport type milling machines...
>
> What i want to know is the lash up of nuts, washers ect between

the

> bearings and the pulley.
>
> To be more specific, after the 2 angular bearings there is a fine
> pitch thread for a nut to tighten up the bearing pair. I am

thinking

> of making it 20mm x 1.00
>
> A few things i want to know is.
>
> 1. How long does the nut have to be to take the force of preload
> tension on the bearings.
>
> 2. What kind of hardware is usally employed...As in type and
> order...Like bearing-groundwasher-lockwasher-nut...Or does the nut
> tighten on the bearing...Or is there 2 nuts to tighten against

each

> other...ect
>
> The bearing house has 2 stock nuts at the 20mm x 1.00 size
> one is about .252 inches long for $3.38
> another is .512 inches long for $16.85
>
>
> Wally