Retrofiting an old big milling machine

vre wrote: i think goes up to 2k.

That's a little low, but not as stupidly low as mine. As long as you can use big cutters or can wait to nibble it away with small ones.
There is also the possibility of fitting a secondary high-speed spindle.

But i found that this machine is not suitable to convert to cnc easily.

It is already CNC, so I don't understand this point.

No it is not cnc.
it has only one motor for moving 3 axis x y z and change moving axis by
coupling gears mechanicaly so it has movement with 1 axis each time.
Move 1 axis stop change coupling and move other axis.
It gets the position by linear scales...
Because table is about 1 ton movement of Z is extreme difficult
needs giant servo with giant ballscrew.
But the biggest problem is how to fit z axis ballscrew + servo.
To good to be true cnc with 1500 at this size.
Anyway machine is 2.5tons and good mechanicaly.
Is it worth as manual machine for 1.5k ?
I have already 2 1.8kw servos 2500ppr for x y axis and mesa ethernet card with analog +-10 daughter card.
I can find 7.5kw vfd for spindle for 250 euros.
But for Z iam locked it is 1 ton what servo & ballscrew needs ?
Any trick with counterweights to reduce z servo & ballscrew size?

The existing motor is big enough to move the table, so the question has to be how big that is.

I don't think that you necessarily have to give up on retaining CNC. Yes, it will need extra motors, and they might have to be mounted in different places to the existing motor (I would probably keep the existing motor and drive for the Z axis, and add others for X and Y)

Anyway i will buy it and if it is suitable to retrofit i will keep it
orherwise one friend told that will keep it and use it as manual machine.
I think only the 12 iso50 toolholders + 160mm milling head that has worth 1.5k euros.
Machine has 7 motors in total big copper transformers so i think the price is good..
Another question..rigid taping can be done with conventional motor in spindle + encoder + vfd ?

Finally i got it.
I will open a new thread for repairing and retrofiting with linuxcnc

Yes, please!
That will be exciting!

Best of luck!

/Chris