Standard presses are designed to have a bed deflection of .0015" to .002" per foot (,125 to ,167 mm/m) when full-rated tonnage is distributed over two-thirds of the bed. In addition, the slide deflection of a standard press will be approx. 1.5 times more than the bed deflection. As shown below, the PM4 has been designed with extremely low deflection provid­ing the ability to run tighter punch-to-die clearance, as well as the flexibility to run small, full tonnage dies on a large press while maintain­ing part quality and die life.