Why do you say the precision of hydraulic press determine the precision of the parts

Hydraulic press is a kind of delicate general press structure, with a wide range of USES, high production efficiency, dongguan hydraulic press can be widely used in cutting, punching, blanking, bending, riveting and forming process. Through the metal parts is strong pressure in the metal plastic deformation and fracture to processed into parts. Mechanical hydraulic press work driven by motor through v-belt pulley, gear pair and clutch drive the slider-crank mechanism, make the slider and punch line downward. Mechanical press in forging work after the completion of the slider range upward, clutch release automatically, automatic device connected on the crank shaft at the same time, make the slider stops near the top dead center.In general, for the average pressure with fine processing parts, adopted by the ?