The trailer coupling has a holding unit (26), which is firmly connected with the vehicle body (12) and a pivot bearing unit (30) provided on the holding unit. The pivot bearing unit has a pivot bearing base and a pivoting element, where the pivot bearing base is firmly connected with the holding unit. A ball neck (40) is held on the pivoting element with an end (42). A fixing unit is provided with a stationary toothed segment that is firmly connected with the pivot bearing base.
