ROTOR FOR A ROTARY ELECTRIC MACHINE

A rotor (1) for a rotary electric machine; the rotor (1) has: a shaft (2), which is mounted so as to rotate around a rotation axis (3); a magnetic core (4), which is arranged around the shaft (2) and consists of a plurality of lamination sheets (5) stacked together; and a pair of end discs (11), which are arranged around the shaft (2) at the two opposite ends of the magnetic core (4) and are designed to keep the lamination sheets (5) of the magnetic core (4) stacked together; wherein the end discs (11) are designed to have balancing holes (12), which dynamically balance the rotor (1) around the rotation axis (3). Each end disc (11) consists of an inner component (13) with an annular shape, which is arranged around the shaft (2) and is made of a first metal material, and of an outer component (14) with an annular shape, which is arranged around the inner component (13) and is made of a second metal material, which is different from the first metal material and is non-magnetic.