Re: Acme / Ball Screw conversion

Hello,

The number of circuits in a ballnut has little or nothing to do with
pre-loading. A single circuit ballnut can be pre-loaded by
adding "oversize" balls.

Multiple circuits are used to increase load carrying capability, or
to increase lead, much the same as "normal" multi-start screws.

Hope this helps,

Ballendo

P.S. I'd NOT do this! Not only is the screw too small; and the
backdrive issue another mentioned real, but you only mention "doing"
the single axis. Which will "confuse" your "sense-abilities". MUCH
better to either SELL the screw you have and use the proceeds to buy
the "right" screws/nuts... OR to use the screw uyou have in another
machine. <just my opinion>

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:
>> mayfieldtm wrote:
>><snip>with a nice double circuit ball nut and angled end bearings.

> If it has 2 circuits, it probably already IS preloaded.