Shop press punching thick steel - GIF

[carl blum]

HI:

The pressure is the circumference x the thickness x the sheer strength of steel, so guessing at the sizes:

(1" dia x Pi = 3.14 ) x 1/2" thick x 30K psi for steel = 24 tons

Iron workers have very generous punch / die clearance which will drop the tonnage required.

Carl.