Rolling device for a hot metal strip from aluminum, - wherein the rolling device has a roll stand; - wherein the rolling device has a coiling device disposed on the outlet side of the roll stand, having a coiler and a rear deflection roller; - wherein the rear deflection roller is disposed between the roll stand and the coiler; - wherein the rolling device has a measuring assembly which is disposed between the roll stand and the rear deflection roller and is specified to determine a flatness of the metal strip; - wherein the measuring assembly has a mechanical excitation device by means of which the metal strip in the thickness direction thereof is excitable to mechanically oscillate; - wherein the measuring assembly has a measuring device by means of which, for a plurality of regions of the metal strip that lie next to one another in the width direction of the metal strip, the amplitude of the excited mechanical oscillation of the respective region of the metal strip is detectable, characterized - in that the rolling device has a trimming device which is disposed on the outlet side of the roll stand and by means of which one band of the metal strip is in each case able to be severed on both sides of the metal strip so that only one remaining central region of the metal strip is supplied to the rear deflection roller and from the latter to the coiler; and - in that the rolling device has a front deflection roller which is disposed between the trimming device and the measuring assembly and by means of which the metal strip is able to be deflected from a direct connecting line between the roll stand and the rear deflection roller. - wherein the rolling device has a roll stand; - wherein the rolling device has a coiling device disposed on the outlet side of the roll stand, having a coiler and a rear deflection roller; - wherein the rear deflection roller is disposed between the roll stand and the coiler; - wherein the rolling device has a measuring assembly which is disposed between the roll stand and the rear deflection roller and is specified to determine a flatness of the metal strip; - wherein the measuring assembly has a mechanical excitation device by means of which the metal strip in the thickness direction thereof is excitable to mechanically oscillate; - wherein the measuring assembly has a measuring device by means of which, for a plurality of regions of the metal strip that lie next to one another in the width direction of the metal strip, the amplitude of the excited mechanical oscillation of the respective region of the metal strip is detectable, characterized - in that the rolling device has a trimming device which is disposed on the outlet side of the roll stand and by means of which one band of the metal strip is in each case able to be severed on both sides of the metal strip so that only one remaining central region of the metal strip is supplied to the rear deflection roller and from the latter to the coiler; and - in that the rolling device has a front deflection roller which is disposed between the trimming device and the measuring assembly and by means of which the metal strip is able to be deflected from a direct connecting line between the roll stand and the rear deflection roller.