Mainfeatures Toprolldevicemainlyconsistsoftoproll,mainoilcylinder,toprollbearingchockanddoublerowrollerbearing,etc. Toprollprovidespressureforbending;theworkingpressureofmaincylindersis19.5MPa. Toprollisdesignedinadrumshapewithequallyspreaderloadof70%ofthemaximumpressingforcesoastopresetthedeformationdeflection. Thetoprollmaterialis42CrMowithrefiningtreatmentto260 300HB. Lowerrollsdeviceconsistsoflowerrollbearingchocks,lowerrollsandlowerrollgears,etc. Thisdeviceworksthroughasetofwormandwormwheelspeedreducermodeldrivenbyamotormodel.Torqueistransmittedtotwopairsofwormandwormwheelspeedreducingmechanism.Wormwheeldriveshorizontalmovingscrewrodtomovemachineframeandrealizehorizontalmovementofthetoproll. Toprollhorizontalmovedeviceisdesignedforplateendspre-bendingofnon-symmetricrolling. Lowerrollsmaterialis42CrMowithrefiningtreatmentto260 300HB. Supportrollsdeviceconsistsofsupportrolls,supportrollbearingchocks,connectingframeandtaper keys,etc. Supportrollscanbeadjustedupanddownwhenbendrollingthickandthinsheetmetalplates respectively.