Electric machine with - at least one superconducting rotor coil which is to be cooled and is mounted such that it can be rotated about a rotational axis, - a rotor body, - and at least one supporting apparatus which is arranged between the rotor coil and the rotor body, for support of the at least one rotor coil against the rotor body, - the supporting apparatus comprising an elastically deformable supporting element and a stop element, - the supporting element being designed in such a way that it supports the at least one rotor coil against forces which occur during normal operation of the coil, and in the process prevents contact between the rotor coil and the rotor body, which contact is imparted via the stop element, characterized in that - the supporting element has a loop-like cross section in a plane perpendicularly with respect to the rotational axis, - the supporting element having, in a plane perpendicularly with respect to the rotational axis, the cross-sectional shape of a mirror-symmetrical, rounded arc, - a central region of the arc on the rotor coil and the two limbs of the arc being connected fixedly in each case to the rotor body, and the stop element being fastened via the central region to the rotor coil, or a central region of the arc on the rotor body and the two limbs of the arc being connected fixedly in each case to the rotor coil, and the stop element being fastened via the central region to the rotor body, - the supporting element being elastically deformable to such an extent that a mechanical contact can come about between the rotor coil and the rotor body via the stop element as a result of overload forces which occur in the case of a malfunction. - at least one superconducting rotor coil which is to be cooled and is mounted such that it can be rotated about a rotational axis, - a rotor body, - and at least one supporting apparatus which is arranged between the rotor coil and the rotor body, for support of the at least one rotor coil against the rotor body, - the supporting apparatus comprising an elastically deformable supporting element and a stop element, - the supporting element being designed in such a way that it supports the at least one rotor coil against forces which occur during normal operation of the coil, and in the process prevents contact between the rotor coil and the rotor body, which contact is imparted via the stop element, - the supporting element has a loop-like cross section in a plane perpendicularly with respect to the rotational axis, - the supporting element having, in a plane perpendicularly with respect to the rotational axis, the cross-sectional shape of a mirror-symmetrical, rounded arc, - a central region of the arc on the rotor coil and the two limbs of the arc being connected fixedly in each case to the rotor body, and the stop element being fastened via the central region to the rotor coil, or a central region of the arc on the rotor body and the two limbs of the arc being connected fixedly in each case to the rotor coil, and the stop element being fastened via the central region to the rotor body, - the supporting element being elastically deformable to such an extent that a mechanical contact can come about between the rotor coil and the rotor body via the stop element as a result of overload forces which occur in the case of a malfunction.