H8178 Table Power Feed for G0463/G0619 (Sieg X3 / Super X3)
 

http://www.grizzly.com/products/Tabl...63-G0619/H8178

I found mine to work OK, except that the way it's mounted. There is no
way to line up the motor shaft to the leadscrew in a way that keeps
things lined up. The manual handwheel is harder to turn due to the side
pressure exerted by the motor shaft...

Mounting it like a bridgeport power feed on the right side would mean
that the shaft is not going to bind on it.