PRESS MACHINE HAVING SUSPENSION MECHANISM

摘要

A suspension mechanism is formed as a liquid-tight structure by fitting the bottom end of a female screw member using a liquid-tight sealing member provided between a slider and a retainer and by covering the retainer with the liquid-tight sealing member. A highly-pressurized liquid is initially supplied to each clearance formed between any components such as liquid-tight sealing member, female screw member, male screw member and retainer through a liquid supply passage formed through the liquid-tight sealing member. The highly-pressurized liquid is supplied by an amount flows out through the screwing portions between the male and female screw members to maintain the pressure of liquid within the liquid-tight structure in a predetermined range.