Krugerrand
Meow
Warning: I am not a stamping engineer.
I think what you are describing is the result of a standard mechanical press having a fixed displacement based on the eccentric cam that drives it. If the die interferes, the entire mechanism jams and you suddenly have a whole lot of inertial trying to break things. Akin to hydrolocking an ICE.
The Schuler presses are hydraulic which provides much higher adjustability and control over the stamping process compared to a standard fixed stroke mechanical press. The maximum force is also limited to the hydraulic fluid pressure, even in a premature bottoming case. From their literature https://www.schulergroup.com/major/...s_broschuere_hydraulische_pressenlinien_e.pdf
It seems like switch over is fairly fast. The lead press also has a hydraulic bed which monitors the forces as the die reaches full stroke.
The old Schuler line is hydraulic, the new one is not. I'm guessing it's mechanical servo.
http://stamtec.com/files/Stamtec_PressComparison_wp_v6.pdf