Re: preloading ballscrews

Hello,

There is about a 3:1 ratio.

Your 3.94mm calcs to .1551"
.156 balls would have a difference of .00088"
Times 3, that's .0026"

.15625" is a common fractional size, but may be too big, as that
makes for over .0033"

Bal-tec, in southern California, can supply balls of any size, in
many grades and materials.

Although more than a few on the list feel preloading using oversize
balls doesn't work, can't be relied upon, etc., etc.; It works well
for me with rolled ballscrews. I use krytox grease. Expensive, but
worth it, IMO. Especially during the initial run-in period. Graingers
now stocks it.

Hope this helps,

Ballendo


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "afogassa" <afogassa@y...>
wrote:

> Hi everyone,
> i've a ballscrew that has some play on it, about .002" and I was
> thinking about loading it with bigger balls to preload it.
> the balls measures 3.94 mm does any knows what wounld be the next
> size I should fit on it to get it with no play?
>
> Thank's
> Fogassa