A silage cutting head for cutting silage from a heap (23; 123), comprising: a linear silage cutter (26; 126; 326; 426; 526) extending in a longitudinal direction for cutting off silage from the heap along at least one linear cut in said longitudinal direction, the silage cutter (26; 126; 326; 426; 526) bounding at least a longitudinal side of an entry passage for allowing silage cut off the heap by the linear silage cutter (26; 126; 326; 426; 526) to pass through, said entry passage being elongate in said longitudinal direction and having a width in said longitudinal direction; an outlet passage (29; 129), said outlet passage (29; 129) having a width in said longitudinal direction, which is smaller than the width of said entry passage; at least one conveyor screw (30; 130) having an axis of rotation oriented in said longitudinal direction, the at least one conveyor screw (30; 130) extending at least in a side zone of the cutting head (12; 112; 212) aside of an outlet zone of the cutting head in front of the outlet passage (29; 129), for laterally transporting at least portions of the cut silage from the at least one side zone of said cutting head towards said outlet passage (29; 129); at least one side cutter at a lateral outer end of the entry passage, rotatable about an axis of rotation parallel to the axis of rotation of the at least one conveyor screw (30; 130) and defining a rotary contour of radially and laterally most outermost portions of said at least one side cutter; a guide surface extending around a section of the at least one conveyor screw (30; 130), leaving a space between the guide surface and a rotary contour of the at least one screw conveyor (30; 130); characterized in that the guide surface ends laterally inwardly and closely adjacent the rotary contour of the at least one side cutter and in that the rotary contour of the at least one side cutter projects radially beyond at least a portion of the guide surface. a linear silage cutter (26; 126; 326; 426; 526) extending in a longitudinal direction for cutting off silage from the heap along at least one linear cut in said longitudinal direction, the silage cutter (26; 126; 326; 426; 526) bounding at least a longitudinal side of an entry passage for allowing silage cut off the heap by the linear silage cutter (26; 126; 326; 426; 526) to pass through, said entry passage being elongate in said longitudinal direction and having a width in said longitudinal direction; an outlet passage (29; 129), said outlet passage (29; 129) having a width in said longitudinal direction, which is smaller than the width of said entry passage; at least one conveyor screw (30; 130) having an axis of rotation oriented in said longitudinal direction, the at least one conveyor screw (30; 130) extending at least in a side zone of the cutting head (12; 112; 212) aside of an outlet zone of the cutting head in front of the outlet passage (29; 129), for laterally transporting at least portions of the cut silage from the at least one side zone of said cutting head towards said outlet passage (29; 129); at least one side cutter at a lateral outer end of the entry passage, rotatable about an axis of rotation parallel to the axis of rotation of the at least one conveyor screw (30; 130) and defining a rotary contour of radially and laterally most outermost portions of said at least one side cutter; a guide surface extending around a section of the at least one conveyor screw (30; 130), leaving a space between the guide surface and a rotary contour of the at least one screw conveyor (30; 130); characterized in that the guide surface ends laterally inwardly and closely adjacent the rotary contour of the at least one side cutter and in that the rotary contour of the at least one side cutter projects radially beyond at least a portion of the guide surface.