Rotating Nut Fixture x2

[Desertboy]

I think Komatias meant frame size, not torque ;-)
I would expect a choice between Nema23, 34, and 60/80 servo sizes would cover most bases.

Until Komatias posted, I was thinking of making some of these, but I won't step on his toes.

If it gets me 3 rotating ballnut fixtures you can dance on my grave lol.