Re: Max feedrate of ball screws?

Hi Alex,
I was also dubious about #25 chain but after one of the old lists
described in some detail an old industrial gantry router (with
excellent reputation) constructed with #25 chain drives but I havent been able to find it again.

This old commercial machine had #25 chains and that combined with an apparently adequate tensile strength of the chain and my collection of #25 sprockets was enough for me to try it. Like any new built machine there may be teething problems so I may have to upgrade somewhere down the track. Plus its a woodworker with much lower forces needed than a steelworker.

Regards
Bob Thomas

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "alex" <telecomt@t...> wrote:
> Very interesting project.
> I may be mistaken, but I think you are expecting too much from #25 chain in
> terms of a load.
> Why not to try chain #40?
> The good source for chain sprockets and chain is www.princessauto.com.
> For example, 10 feeet of the chain is $12 Cdn, 40 teeth sprocket is $8 Cdn,
> Ball - bearing pillow block - $8 Cdn.
> Btw, I don't work there.
> Regards, Alex