A device to replace a coil or a core. The coil comprises the sleeve-like core and a film wound thereon. The device is stationary with respect to a winding station at which the film is unwindable from the coil or windable onto the core. The device has at least one stand and a support arm that is movably situated at the stand. The support arm extends along a horizontally running first axis. The coil or the core is situatable so that it is movable on the support arm along the first axis. An arrangement and a method for replacing a coil or a core is also provided.