with the [problem] cover plate, and, to provide a highly economical weed cutter. A herbicidal cutter 10 includes a cutter plate 20 that is fastened to the rotation output section 88, a cover plate 30 which covers them from below, the cover plate detachably supporting the cover plate 30 supporting It includes a member, a bearing 60 interposed between the cover plate support member and the rotating output section 88, the. The cover plate support member includes a surface bearing 60 and a peripheral surface 54 inner surrounding a rotation center axis X is attached, and the ground situated below the lowermost surface of the lowermost surface, and the bearing 60 of the cover plate 30 having, and the ground plane 56 which is capable of contact.FIELD 3【課題】カバー板を備え、かつ、経済性の高い除草用カッタを提供する。【解決手段】除草用カッタ10は、回転出力部88に締結されるカッタ板20と、これを下側から覆うカバー板30と、カバー板30を着脱可能に支持するカバー板支持部材と、カバー板支持部材と回転出力部88との間に介在する軸受60と、を備える。カバー板支持部材は、回転中心軸Xを囲む内周面54であって軸受60が装着される面と、カバー板30の最下面及び軸受60の最下面よりも下側に位置して地面と接触することが可能な接地面56と、を有する。【選択図】図3
