A disk brake for a traction machine having a damping height of a damping mechanism that can be adjusted integrally. According to one embodiment, a disk brake includes: a static iron core; a spring and a coil assembly in the static iron core; a dynamic iron core assembly including a dynamic iron core, a dynamic disk, and first and second friction rotors configured to fit with the dynamic iron core and the dynamic disk; a plurality of connecting bolts; a plurality of spacers; a damping mechanism on the dynamic iron core assembly, the damping mechanism including a plurality of damping components on the dynamic iron core; an adjusting toothed belt assembly coupled to the damping components and banded to a circumferential outer surface of the dynamic iron core; and an adjusting bracket on the dynamic iron core and coupled to the adjusting toothed belt assembly.