Re: sherline Ballscrews (Yes, you CAN!) But I wouldn't.

Alvaro wrote:

>Sorry to say this,but,there is no way that one can fit a Kerk or BSA
>nuts on the x,y.
>Best thing would be moglice.

Alvaro,

Be careful not to underestimate the power of a dedicated mind. It HAS
been done!!

The centerline to x table interference(also the c/l to base
interference on Y)on a "stock" sherline 5400 mill is .235(measured
empirically, the design value is probably .250 since Joe Designed the
mill and he likes to work in inches)(on re-read I guess it MAY be
15/64)

On pg 2-17 of Ball screws and actuators catalog are 2(two!) possible
solutions! (1/2 of 16mm .6299" clearance needed, which is .315)

Since .315 is bigger than .250(or.235) by .065, you may say it CAN'T
be done. BUT, if you MILL A CHANNEL in the saddle and base, you find
it CAN fit. AND HAS!

FYI, I do not believe this is the best way to treat a sherline retro-
fit.

I would probably use the orig. nuts (as many hundreds of successful
Sherline retro's from at least SEVERAL companies have done for
years). Or I may look at the results of the moglice people and go
that route.

Ballendo

P.S. This example used a STANDARD part from ONE company. Screw/Nut
MFG companies are used to making "specials" to fit "extreme"
situations, in which case the sherline certainly applies :-)