Rotor for electric machine and method for producing rotor

The invention relates to a rotor (18) for an electric machine (10), in particular for a brushless DC motor (12), comprising a hollow cylindrical main body (20) which is connected in a rotationally fixed manner to a crankshaft (16). According to the invention, the base body (20) has a plurality of radial projections (48) which are offset relative to one another in the outer circumferential direction (U) and in the axial direction (A) by a defined offset angle (V) on the covering surface of the base body, each radial projection (48) being limited over an angular range (W) smaller than the offset angle (V), the hollow cylindrical base body (20) is permanently connected, in particular bonded, to a hollow cylinder (26) surrounding the hollow cylindrical base body (20) in the outer circumferential direction (U) by means of a joining process. The invention further relates to a method for producing a rotor (18) for an electric machine (10), comprising at least the following steps: applying rotor laminations (50) to a