Rotor rim for an electric machine

A rotor rim for an electric machine, the rotor rim comprising:

• a plurality of tension bolts which are axially oriented;
• at least two annular plates which are solid, two of the at least two annular plates being arranged in an axial direction on an outside so as to form two outer annular plates, which are configured such that any given number of other ones of the annular plates are arranged between the outer annular plates, the plurality of tension bolts connecting the at least two annular plates to one another, the at least two annular plates including an outer circumference which includes a plurality of grooves arranged thereon, the plurality of grooves being configured for accommodating a plurality of rotor poles which are configured such that for each one of the plurality of rotor poles at least two of the plurality of tension bolts are provided;
• a plurality of intermediate ring elements, between each two adjacent ones of the at least two annular plates respectively a layer of the plurality of intermediate ring elements being arranged, each layer of the plurality of intermediate ring elements being configured for including exactly one of the plurality of intermediate ring elements per one of the plurality of rotor poles, the plurality of intermediate ring elements being arranged in such a way that between each two adjacent ones of the plurality of intermediate ring elements a ventilation duct is formed which extends from an inside of the rotor rim to an outer circumference of the rotor rim where the ventilation duct opens into a space between the plurality of rotor poles, each of the plurality of intermediate ring elements being penetrated by at least two of the plurality of tension bolts and including an axially oriented surface which includes an abutting part and a remaining part, each of the plurality of intermediate ring elements abutting with only the abutting part of the axially oriented surface against an adjacent one of the at least two annular plates respectively, the abutting part of the axially oriented surface being configured in each case to be raised with respect to the remaining part of the axially oriented surface of a respective one of the plurality of intermediate ring elements.