2x 2005 C7 Ballscrew 1450mm Length with Ballnuts + FK/FF mounts and motor coupler

[Jonathan]

I considered buying them, for about 20 seconds.
The only thing this size ballscrew is good for is maybe a big milling machine or lathe. For other machines, like CNC routers, the forces on the ballscrews are so low that you don't need the slight increase in stiffness gained from using a RM2005 screw, hence you're much better off sticking with 16mm ballscrews and the appropriate pitch. The price was good, but to me that's not enough to counter the poor performance you'll get on a router with these, especially since it could increase the cost of the electrical parts. Presumably John S has a big machine to convert...

( That Old bastards not about any more and he's still beating me to it.!! )

Hmm really?