Complex ring element, - wherein the complex ring element has a first and a second ring with a respective axis, - wherein the first and the second ring are arranged such that their axes lie on a shared axis and the first and the second ring are adjacent to one another when viewed in the direction of the shared axis , - wherein the complex ring element has an additively applied connecting element , by way of which the first and the second ring are interconnected, - wherein the connecting element consists of metal, - wherein the connecting element in each case partially overlaps the first and the second ring on their respective outer peripheral surfaces when viewed in the direction of the shared axis , - wherein the connecting element is circumferential when viewed in the peripheral direction about the shared axis and - wherein the connecting element is manufactured by means of an additive application method, - wherein the connecting element is connected to the first ring with a material fit, - wherein the connecting element is connected to the second ring with a positive and/or non-positive fit, - wherein, on its peripheral surface , the first ring has a first contour which uses a resistance to counteract a twisting of the connecting element about the shared axis in relation to the first ring , wherein a torque can be transferred between the first ring and the connecting element , - wherein, on its peripheral surface , the second ring has a second contour which uses a resistance to counteract a twisting of the connecting element about the shared axis in relation to the second ring , wherein a torque can be transferred between the second ring and the connecting element , - wherein the first ring or the second ring is a shaft of a rotor or is connected to the shaft of the rotor , - wherein the first ring consists of metal, - wherein the second ring consists of ceramic. - wherein the complex ring element has a first and a second ring with a respective axis, - wherein the first and the second ring are arranged such that their axes lie on a shared axis and the first and the second ring are adjacent to one another when viewed in the direction of the shared axis , - wherein the complex ring element has an additively applied connecting element , by way of which the first and the second ring are interconnected, - wherein the connecting element consists of metal, - wherein the connecting element in each case partially overlaps the first and the second ring on their respective outer peripheral surfaces when viewed in the direction of the shared axis , - wherein the connecting element is circumferential when viewed in the peripheral direction about the shared axis and - wherein the connecting element is manufactured by means of an additive application method, - wherein the connecting element is connected to the first ring with a material fit, - wherein the connecting element is connected to the second ring with a positive and/or non-positive fit, - wherein, on its peripheral surface , the first ring has a first contour which uses a resistance to counteract a twisting of the connecting element about the shared axis in relation to the first ring , wherein a torque can be transferred between the first ring and the connecting element , - wherein, on its peripheral surface , the second ring has a second contour which uses a resistance to counteract a twisting of the connecting element about the shared axis in relation to the second ring , wherein a torque can be transferred between the second ring and the connecting element , - wherein the first ring or the second ring is a shaft of a rotor or is connected to the shaft of the rotor , - wherein the first ring consists of metal, - wherein the second ring consists of ceramic. <EOS>