To adjust folding rollers corresponding to different folding gap widths, very quickly and temporarily in an extremely short time.

A device is provided for automatically adjusting folding rollers W1-W5 corresponding to different folding gap widths in relation to the thickness of sheets passing through folding gaps F1-F4. The folding rollers intended to be adjusted are supported by respective swing levers 22, the swing levers 22 are affected by electrically controllable actuators S1-S5 and adapted to be swung against a spring 26 and the actuators S1-S5 are controlled by an electronic processing computer. Each of the actuators S1-S5 consists of a plurality of pneumatic working cylinders arranged in cascade form, wherein the working strokes for the working cylinders are added to one another.