A shaft bearing assembly for a brake assembly includes a cam shaft having a bearing section and a cam, a brake anchor plate having a bearing eye which receives the cam shaft at the bearing section, a slack adjuster assembly operably coupled to the cam shaft, and an elastic bearing element radially prestressed and operably coupled to the bearing section of the cam shaft in a torsion-elastic manner such that after a predetermined twist angle of the cam shaft is attained, the cam shaft slips through relative the bearing element during a braking action.