Re: RF-45 Retrofit

Carlos,
You're right, of course, there is a small flat area, my best
caliper is a mitutoyo also and I think the flat is about what yours
is. I don't know how much error that would translate to on a 15mm
bore?? I still think the ball screws I have are too large for the
bearings by a few thousanths. I'm going for the fit Peter mentioned
in his post, a very light press fit on the screw and a slip fit in
the bore of the bearing block. I think that will give the best result
when trying to minimize end play on the ball screw.

Terry


--- In CAD_CAM_EDM_DRO@egroups.com, "Carlos Guillermo" <carlos@v...>
wrote:

> Terry -
>
> Are you using calipers to measure that ID? On a diameter that

size, the

> calipers will show a smaller-than-actual ID if there are any flats

on the

> faces of the measuring tips. There is almost always some kind of

flat,

> unless they are sharpened like a knife. My Mitutoyos have

about .020" flats.

> I don't know how significant the error would be, but I don't expect

accurate

> measurements with calipers on small ID's.
>
> Carlos
>
>