Device and method for calibrating an underfloor wheelset lathe without a calibration wheelset

A method for calibrating an underfloor wheelset lathe, comprising the following steps:

• a) providing an underfloor wheelset lathe with a measuring device,
• b) providing a calibration device, and
• c) calibrating the underfloor wheelset lathe measuring system, wherein the calibration takes place without using a calibration wheelset and in that the calibration comprises the following partial steps:
• c1) bringing a friction roller of the calibration device into contact with a measuring roller of the measuring device,
• c2) driving the friction roller and/or the measuring roller such that the rollers friction roller and the measuring roller roll off one another,
• c3) measuring the friction roller, in particular measuring the diameter of the friction roller, and
• c4) calibrating the measuring device taking into account the values measured in step c3).