The invention relates to a disc harrow (1) comprising a frame and at least one disc(2), which disc (2) is fixed by means of a number of bolts (18) to a hub (7) journalledin the frame, the shanks of which bolts (18) extend into bores (6) formed in saiddisc (2) and bores (10) formed in said hub (7) over at least part of their length,which latter bores (10) are aligned with the bores (6) in the disc (2), whereinat least one pin (23) is provided, which pin (23) extends with a tight fit into thehub (7) and into recesses (24) formed in the disc (2) over at least part of its length,and the recess (24) in the disc (2) is in open communication at one end with a centralhole (21) formed in the disc (2).
