0.5 MPa. The 40-ton gear press is a large gear press. According to the product introduction, the air pressure of the 40-ton gear press is 0.5 MPa. Punch press is a stamping press. Stamping production is mainly aimed at sheet metal. Through this die, blanking, punching, forming, stretching, trimming, fine punching, shaping, riveting and extruding parts can be carried out.