The present invention relates to a rotational vibration damper (2) comprising a base part (18) rotatable around an axis of rotation (16) and an inertial mass part (20) which is rotatable relative to the base part (18) counter to the reset force (70) of a reset device (26), wherein the reset device (26) has a spring unit (28) for generating a set force (68) and a lever element (30) arranged on the base part (18) and pivotable around a pivot point (34), via which lever element the set force (68) is transmittable while generating the reset force (70) affecting the inertial mass part (20). The inertial mass part (20) is supported or is supportable on the base part (18) in the radial direction (8, 10) by the lever element (30).