Patent ID: 7926626

Claim:
An adjusting device for adjusting a friction face wear on a brake lining and a brake disk of a pneumatically actuated disk brake having a brake application device which is actuated by a rotary lever, comprising: a spindle; a spring sleeve; a prestressing spring; an adjuster driver; two rolling body bearing arrangements; and a switching fork, wherein the adjuster driver retains the prestressing spring, the spring sleeve, the two roller body bearing arrangements and the switching fork on the spindle, with the switching fork arranged axially between the two rolling body bearing arrangements, a first one of the rolling body bearing arrangements is configured as a roller bearing and a second one of the rolling body bearing arrangements is configured as a ball ramp coupling with a freewheeling function, the ball ramp coupling has a drive-side coupling bush on a switching fork side of the ball ramp coupling and an output-side coupling bush on a side of the ball ramp coupling away from the switching fork, and wedging balls between the drive-side coupling bush and the output-side coupling bush, the output-side coupling bush is axially supported on a conical seat of the spring sleeve, and the drive-side coupling and the output-side coupling bush are stressed with respect to one another by a torsion spring, wherein the torsion spring is arranged concentrically with respect to the drive-side coupling bush and the output-side coupling bush.