Marchant Dice router no thrust bearings?

[JAZZCNC]

This is how I have machined my ballscrews before as my lathe aint up to the job of machining the hardend casing off.

That looks like a Myford lathe and with the correct cutting tool will handle machining ballscrews, my little boxford does. But with this job then it wouldn't hurt to anneal the end up to remove hardening.

From the pics of motor with screw then there is a bit screw left with enough room for a nut so just thread the whole lot then grind flat spot for coupler screw, you may have to machine a new coupler or a sleeve.? . . . Sure it could be done easier than welding bits onto screw.!!