Patent ID: 8739945

Claim:
A wear adjustor for a pneumatic disc brake having a rotary-lever actuated brake application device with an adjusting spindle into which the wear adjustor is insertable, the wear adjustor comprising: a bearing disc by which the wear adjustor is attachable to a caliper of the disc brake; a drive ring on a drive-output side of the bearing disc; an axial bearing, wherein the axial bearing includes a drive-input side formed by a drive-output side portion of one of the bearing disc or a bearing surface rotationally fixed relative to the bearing disc, a drive-output side of the axial bearing formed by a drive-input side of the drive ring, and axial bearing balls located between the bearing disc and the drive ring; a ball ramp clutch having a freewheel function, wherein the ball ramp clutch includes a drive-input side formed by a drive-output side of the drive ring, a drive-output side formed by a drive-input side of a clutch ring, and ball ramp clutch balls located between the drive ring and the clutch ring; and a cone clutch, wherein the cone clutch includes a drive-input side formed by a drive-output side of the clutch ring, a drive-output side formed by a spring sleeve for a cylindrical spring having a tapered cone portion at a drive-input end of the spring sleeve, and cone clutch balls located between the clutch ring and the tapered cone portion of the spring sleeve, wherein the clutch ring is operatively configured for a working angle of rotation limited by at least one stationary stop, the at least one stationary stop is integrally formed on a first end section of a collar bush at a drive-output end of the collar bush extending axially through the ball ramp clutch and the clutch ring, and the drive-input side of the axial bearing is the bearing surface rotationally fixed relative to the bearing disc, and the bearing surface rotationally fixed relative to the bearing disc is formed by a second end section of the collar bush at a drive-input end of the collar bush axially opposite the first end section.