ROTOR OF AN ELECTRIC MACHINE HAVING A SQUIRREL CAGE PRODUCED FROM A GRANULATE

A rotor has a rotor core which is made of a core material and has grooves which extend substantially in a direction of a rotor axis. The rotor core has at each axial end of the grooves an annular recess which is disposed concentrically with respect to the rotor axis and connects the grooves. The rotor core has a diffusion layer which has a diffusion material and which at least partially covers at least the respective surface of the grooves and/or the annular recess. A granulate of an electrically conductive material is introduced into the grooves and/or the annular recess and, while heat being supplied and while pressure being exerted, is connected by cohesive bonding to the rotor core.