Means for detecting the state of wear of wheels or rollers

The invention relates to a Vorrichtungt and a method for automatically detecting the state of wear of portable wheels or rollers (1) in conveyor systems, z. As baggage handling systems. It solves the problem of detecting the state of wear in a simple and secure manner automatically by measurement when the to be tested roll passes through the system, by a stationarily arranged in the conveying path of the conditioning station (2, 3) in the diameter variations of the wheel or roller are (1) from a predetermined desired diameter contactlessly be detected and signaled.