TREAD BREAK UNIT FOR A RAILROAD VEHICLE

The invention relates to a tread brake unit (1) for a railroad vehicle comprising an actuator (3) mounted to a housing (2) of the brake unit (1), wherein the actuator (3) is coupled to a brake block holder (4) via a wear re-adjustment means (12) comprising a spindle (9). The tread brake unit is characterized in that a sensor (21) is present for determining the position of the spindle (9) of the re-adjustment means relative to the housing (2).