Thread rolling head

A thread rolling head, comprising:

• a bearing housing for at least two profile rollers, each rotatably mounted on a respective eccentric shaft;
• and
• a shank coupled to the bearing housing;
• wherein:
• adjacent rollers of the at least two profile rollers delimit an insertion section into which a workpiece to be machined can be inserted in a longitudinal direction defined by a rotational axis of the shank;
• the bearing housing comprises two housing parts that can rotate relative to each other;
• rotation of the two housing parts relative to each other changes spacing between the at least two profile rollers;
• an adjustment element interacts with one of the two housing parts and is rotatable in two directions of rotation about a longitudinal axis thereof, the two directions including a first direction of rotation and a second direction of rotation;
• a rotation of the adjustment element in the first direction of rotation causes relative rotation of the two housing parts to each other in a third direction of rotation;
• a rotation of the adjustment element in the second direction of rotation causes relative rotation of the two housing parts to each other in a fourth direction of rotation counter to the third direction of rotation;
• and
• a display apparatus displays a change of the spacing between the at least two profile rollers, and
• wherein the adjustment element is a threaded spindle rotatable about a longitudinal axis thereof and fixed in an axial direction relative to the longitudinal axis on one of the two housing parts.