Ox,
The Slant Turns are known to be heavy, box-way powerhouses. Most came with the Mazatrol (Mitsubishi) control, although they were built with Fanuc as well.
Mazak will have any part you might need, although very pricey, and maybe located in Japan, as these were built there. Mazak still builds a ST series.
Tool change time is fairly quick, via a swing arm behind a door in the sliding Z-axis way cover. I believe the turret has to go to a fixed Z position to change tools, as the tool changer doesn't move along with the turret. So this extra Z move does add to toolchange time, of course.
The turning toys have a Mazak-unique shank, not Cat 50.
Greg
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