Hydraulic Press Machine (The Essential Guide) | MachineMfg
Working Principle of Hydraulic Press Machine. Hydraulic press mechanism. The area of the large and small plunger is S2 and S1 respectively, and the force on the plunger is F2 and F1 respectively. According to PASCAL's principle, the pressure of the confined liquid is equal everywhere, that is, F2/S2=F1/S1=p; F2=F1(S2/S1).