Patent ID: 7631531

Claim:
Adjusting cylinder for long, rapid lifting movements in rolling stands, including vertical edging stands, wherein each cylinder has at least one piston, which acts by means of the bearing chocks of at least one work roll or of an interposed roll to adjust a work roll on both sides, wherein each adjusting cylinder has a piston (KO) that is equipped with two oppositely directed coaxial piston rods (ST 1 , ST 2 ), and each piston is inserted in a recess in the cylinder base (ZB) or cylinder cover (ZD), such that said base and cover have coaxially arranged bores through which the piston rods (ST 1 , ST 2 ) pass, wherein an annular surface (A 1 ) formed on one side of the piston (KO) by the piston rod (ST 1 ) is smaller than an oppositely directed annular surface (A 2 ) formed on an opposite side of the piston (KO) by the piston rod (ST 2 ).