Cage rotor for an electric induction motor with a short-circuit ring stabilizing tie rods

Disclosed is a squirrel-cage rotor (1) for an electrical induction machine, comprising a plate package (7) from a plurality of adjacently stacked in the axial direction of laminations (5) and a short-circuit cage (9). The short-circuit rods (11) of the squirrel cage (9) extending axially through the plate package (7) and are each connected by a short-circuit ring (13) on end faces of the laminated core (7) connected to each other. The cage rotor is characterized in that at the plate package tie rods (16) are arranged, which have a higher mechanical strength than the short-circuit rods (11) and which from the end faces of the laminated core (7) projecting in the axial direction and at least partially into at least one the end rings (13) protrude. The tie rods (16) may be, for example, stabilizing bars (17) extending axially through the plate package (7). Characterized the tie rods (16) can stabilize the soft material typically consisting of mechanical short-circuit rings (13), for example compared to occur at high speeds centrifugal forces. When the tie rod (16) as the stabilizing bars (17) are formed in the form of hollow tubes, they can serve as additional cooling channels. Projecting end portions (21) may be suitably bent or deformed to blades for circulating cooling fluid through the hollow or promote stabilization bars (17).