Laminated rotor (21) assemblies for rotating electric machines such as hybrid synchronous motors (HSM) of vehicle drives, the rotor plates (26) of which have one or several recesses (29) as a flux barrier or magnet pocket, which comprise radially innermost and outermost edge sections as rounded transition regions from and to edge sections lying therebetween. Each of the rounded transition regions may be shaped at least approximately respectively according to a part of a curve (35) of second order. Between adjacent recesses (29), a respective oblique cross-piece (52) is provided, the center line (54) of which lies obliquely to the pole axis (30).