Patent ID: 8763766

Claim:
A wear adjuster for a brake caliper of a disk brake of a rail vehicle, the wear adjuster comprising: a helical gearing, which has, as screw connection parts, a threaded spindle and a nut which can be screwed thereon, wherein one of the screw connection parts and an actuator element for rotatably driving the screw connection part in a wear adjustment direction are rotated in a first wear adjuster housing to provide a rotatable screw connection part, and the other screw connection part is mounted in a rotationally fixed fashion in a second wear adjuster housing to provide a fixed screw connection part; and a wrap spring freewheeling mechanism, which blocks, in the direction of rotation of the rotatable screw connection part counter to a wear adjustment, and freewheels, in the opposite direction of rotation so as to couple the rotatable screw connection part to a rotationally fixed part by the wrap spring freewheeling mechanism, wherein the rotationally fixed part is formed directly by the first wear adjuster housing such that the rotatable screw connection part is supported on the first wear adjuster housing directly by the wrap spring freewheeling mechanism.