Wayne, I don't have a mounting strategy in mind yet. Originally I was looking at these casters for my combination machine, a more traditional use for this sort of thing and one where you'd just drop a bolt through a hole in the chassis and thread it into the caster. It occurred to me that they might be useful on my MFT as well, since I sometimes want to move it short distances with a workpiece and accessories in place, but most of the time it needs to be fixed on the floor.
Mark mentioned that they're tedious to adjust. That's true, and if I were to use them on an MFT, I wouldn't bother using them for levelling; they'd just be locked or loose, not fine-adjusted for height. I have smooth concrete floors in my shop, so the small range of adjustment and small-diameter wheels are fine.
Allen