Brake Comprising a Device for Ascertaining a Wear Limit

A brake comprising a device for ascertaining a wear limit, the brake comprising:

• a housing;
• at least one first brake body, at least one second brake body and a pressure piece unit comprising a pressure piece which can be moved relative to the housing in a first direction in order to press the at least one first brake body and the at least one second brake body against each other for the purpose of braking and in a second direction in order to release the brake;
• and
• a sensor designed to detect a positional relationship between itself and a detection surface formed on the pressure piece unit, wherein
• if the brake has not reached its wear limit, the positional relationship between the sensor and the detection surface does not change during the movement of the pressure piece in the first direction, and
• if the brake has reached its wear limit, the positional relationship between the sensor and the detection surface changes during the movement of the pressure piece in the first direction due to a relative movement between the sensor and the detection surface.