They consist of an air cylinder and a built-in hydro-pneumatic intensifier.
As a result, the full stroke can be subdivided into two separate phases:
• a low pressure fast approach stroke, when the moving ram meets
a resistance, at any point during its travel, the power stroke is engaged
• a power stroke, where thrust is increased through the hydro-pneumatic
The hydropneumatic units are designed to operate safely and with minimal
noise emissions, an essential feature for a modern production machine.