Hurco KMB-IS CNC update

From my KM3 and KM3P
MotoMex Somex
ST-37A
1800 rpm 3 phase
230 V, 8.5A
460 V, 4.25A
possible part no 694729

Thank you very much

ALL of the hurco km3 and km3+ mills that I have seen are 3hp, the Hawk which is a slightly upgraded version of the km3 with 2 more inches of z travel, that unit has a 5hp motor and a bigger bed as well as boxed ways, but that may not be ALL of the many variants. One thing I think you could do, is find a hawk head casting, and swap the km3, They looked close last time I took measurements. 

As to the Electrokraft brush motor drives, 

Here is that manual 
drive.google.com/file/d/1jE7EJiprhJXXgmJ...sDg/view?usp=sharing
 

Somewhat off topic, but maybe somebody has some useful suggestions.

The Hurco has always exhibited noticeable spindle runout. Assumed it was the bearings. I've also learned its risky to "ass"ume things.

Took the head apart and extracted the spindle. It appears that most of the wobble is due to some sort of angular displacement of the taper off the spindle centerline. Not sure how this could happen?? Crashing the spindle into the table maybe?

There is a new spindle with the matching part number on Ebay. $1800. Midwest CNC has reconditioned spindles for about $2000. Its a bit difficult to spend that kind of money on the old beast.

I've heard that tapers can be reground. Don't know how that works.
Perhaps somebody has an old Hurco rusting away in their boneyard and willing to donate its spindle to a good cause .
Anyways, just tossing this out there.

Taper regrinding works well, sometimes better than a new spindle. You are using the bearings for that spindle and eliminating that run out also.