Re: Affordable ball screws

Hi Greg

One thing to keep in mind, if this matters to you. The x axis is a
right hand screw, while the y axis is a lefty. Have a look at your
mill, and I think you'll see.

You might not care, but this seems to be the normal convention when
it comes to milling machines. It means that you'll always turn
clockwise to push the table away from you.

Again, you might not mind which way the crank turns as long as your
table moves.

Cheers, and show us some pics when you're done, would ya? I'm
attacking my conversion from the other end first. I don't even own a
mill yet, but I'm working on the stepper motors and drivers to get
used to the hardware/software.

Tom.

--- In CAD_CAM_EDM_DRO@y..., "gyachts" <gyachts@y...> wrote:
> If found Thomson/Saginaw ballscrew number 36695179(MSC) but I
didn't
> find anything on their website about Rockford. The Thomson price
is
> cheap, $85 for 72" x 5/8" x 13/64" .2 lead.
>
> I'm converting an import R8 type benchtop Mill/Drill that you see
> from Enco, Grizzly, Harbor Freight etc. Does everyone think this
is
> the type to go with? Or is the Rockford a better screw/nut combo?
> The size of the screw seemed ok, at least I wouldn't want any
> smaller. Does this seem ok?
>
> Greg