Rolling roller and rolling mill

A rolling mill having a fixed housing, comprising:

• a first chock and a second chock removably mounted to the fixed housing;
• a roller shaft rotatably supported by said first chock;
• a first rolling wheel mounted on said roller shaft;
• a sleeve having a first portion and a second portion, said sleeve being tightly fitted to said roller shaft at said first portion, said second chock rotatably supporting said sleeve at said first portion such that said roller shaft and said sleeve form a rolling roller rotatably supported by said first and second chocks;
• a second rolling wheel fixedly mounted at said second portion of said sleeve;
• drive means for rotating said rolling roller;
• hydraulic feed paths in said roller shaft, said hydraulic feed paths terminating in pressure spaces beneath said first portion of said sleeve;
• a first adjustment means mounted to the fixed housing for engaging with and disengaging from said first chock;
• a second adjustment means mounted to the fixed housing for engaging with and disengaging from said second chock;
• and
• hydraulic fluid supply means for providing pressurized fluid to said hydraulic feed paths, wherein said sleeve is immovably fixed in the axial direction on said roller shaft when no fluid is supplied by said hydraulic fluid supply means and said sleeve is axially movable on said roller shaft when the pressurized fluid is provided, said first and second adjustment means setting rolling width by relatively moving said first and second rolling wheels in either direction along an axis of said rolling roller when pressurized fluid is provided prior to commencing rolling and at least said second adjustment means is used for adjusting the rolling width when pressurized fluid is provided during rolling operations, said pressurized fluid expanding said first portion of said sleeve to permit axial movement of said sleeve along said roller shaft.