The roller (1) has cleaners (5) set between rims (4). Each cleaner comprises an arm (7) supporting a plate (6) at a lower end of the arm, and is fixed on a carrier structure (8) at an upper end of the arm. The structure includes a fixation area (10) to receive the arm. The area is limited to a half portion of a rear side of the structure and viewed transversely at direction (A) of forward travel during work. The structure includes round shaped upper and lower grooves (11, 12) realizing a slide, where the grooves are symmetrically arranged with respect to a symmetry plane (13) of the structure.
