Calendar for Rolling a Material Web Having a Constant Thickness, and Corresponding Method

A calender (1) for rolling a web of material (2) with a constant thickness, having at least two rollers (3) arranged parallel next to one another, between which rollers a roller gap (4) is formed, wherein each roller (3) has a roller barrel (5) and a first and a second bearing journal (6, 7) which second bearing journal is axially opposite the first and via which the respective roller (3) is mounted,

• wherein, at least on a first bearing journal (6) of a first of the rollers (3) and on an adjacent first bearing journal (6) of a second of the rollers (3), in each case at least one inner bearing (8) facing the roller barrel (5) and an outer bearing (9) facing away from the roller barrel (5) are arranged axially adjacent to one another, so that the inner bearings (8) are arranged in a first bearing row (A) and the outer bearings (9) are arranged in a second bearing row (B) relative to one another,
• characterized in that the roller gap (4) and/or a preload between the rollers (3) is adjusted by aligned clamping of the inner bearings (8) relative to one another or of the outer bearings (9) relative to one another, on the one hand, and by diagonal clamping of an inner bearing (8) with an outer bearing (9), on the other hand.