I spent a few years in very high speed packaging machinery for cereal-grain products like oatmeal, grits, and cream of wheat, (Farina).
1,200 pouches a minute.
We had 6 of them, I can't recall which model, but the rotor was about 3 foot in diameter.
they were normally problem-free, but the way they were installed in the building made them a nightmare to work on
We brought a rotor down for a pin change, and the guy who rebuilt it used 4 pins to keep the discs separated while pulling the old pins off. He forgot to remove one of the pins when he put it back together. When they started that machine back up the whole building started shaking.