To provide a roll baler that can readily perform a work for changing a mount position of a lift support device and a replacement work.SOLUTION: In a roll baler, a fitting/detaching position where a connection shaft 80B is fitted/detached from an opening part； and a holding position where the connection shaft is supported by a contact support part so as to disable fitting/detaching thereof in a position where a lift support device 8A holds an ejector 80 in a bearing position, within a rotation range of a rotary plate with the rotation of a rotational shaft.SELECTED DRAWING: Figure 14【課題】昇降支持装置の取付位置の変更作業及び交換作業を容易に行えるロールベーラを提供する。【解決手段】回転軸の回転に伴う回転板の回転範囲中に、連結軸８０Ｂを前記開放部から嵌脱する嵌脱位置と、昇降支持装置８Ａがイジェクタ８０を支承位置で保持する位置において、前記連結軸を嵌脱不能として接触支持部で支持する保持位置とが設定されている。【選択図】図１４
