The trailer hitch has two opposing friction clamping grips (9,10) which grip the coupling ball between them. One grip (9) is an adjustable support and is first applied to set the basic grip. The second grip is on a tensioning support which sets the final clamping grip. The first adjustment compensates for wear of the friction pads. The first adjustment comprises a screw control (25) with a limited torque coupling to set the basic grip. The two grips are mounted on a support yoke (7) which provides a set amount of tension between the grips.