Gripper cylinder

The invention provides a gripper cylinder (1) which can be used either as a printing cylinder of a sheet-fed printing press, as a transfer or transfer drum in a sheet-fed printing press or as a gripper cylinder of a folding unit. Instead of a mechanical cam control of its gripper (4) this is about a magnetizable, non-permanent magnetic armature (9) which is pivotable together with a cam roller (10) pivots when a current flows through a stator (12), this one Magnetized housing (13) of the stator (12) and thereby attracts the armature (9) towards the housing (13) against the restoring force of a spring.