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The WH21 series C press is with dry clutch and hydraulic overloading with steel welded body and good rigidity. This C frame power press has six guide rail slides, which has a long and high precision to prolong its life span. The press is controlled by PLC electric centralized system, which includes emergency stop, inch, single, continuous operation specification with a drive output shaft, automatic feeding, and air cushion device. It is equipped with combined dry pneumatic friction clutch, so the engagement is smooth, the action is agile and the noise is low. And this crank press is of convenient maintenance. The vertical structure of crank-shaft is compact and beautiful.