Rotor for an asynchronous electric machine

A rotor for an asynchronous machine, comprising:

• a laminated rotor core having a plurality of circumferentially uniformly distributed grooves extending axially through the laminated rotor core and
• a cast rotor cage, having a plurality of cage bars extending through the grooves of the laminated rotor core and rotor end rings adjacent to end faces of the laminated rotor core, the end rings connecting the cage bars,
• wherein the laminated rotor core has a plurality of axially stacked rotor laminations each having a plurality of circumferentially uniformly distributed recesses forming the grooves,
• wherein the axially stacked rotor laminations include at least two different lamination types, including a first lamination type with elongated, radially extending first recesses or a second lamination type with elongated, radially extending second recesses,
• wherein the radial extent of the first recesses is less than the radial extent of the second recesses and
• wherein, in the laminated rotor core, at least multiple rotor laminations of the second lamination type, then at least multiple rotor laminations of the first lamination type, and then again at least multiple rotor laminations of the second lamination type are stacked on top of one another in the axial direction, such that that a first support shoulder is defined in the respective grooves at least at end regions of the laminated rotor core.