PROBLEM TO BE SOLVED: To provide a rotary cutter for a mowing machine with a guide member to cut weed at a tip of a turning cord-like cut member which can perform more effective cutting operation.SOLUTION: A rotary cutter for mowing machine A1 comprises: a retainer member 100 attached to a rotary cutter installation shaft 14 of a mowing machine B and being rotated a cord-like cut member 4a held at a proximate end side by the retainer member 100 and being derived to a tip side in a radial direction outwardly and a guide member 200 which can rotate relatively below the retainer member 100 with respect to the retainer member 100 around the rotary central axis. A protection member 170 forming a lap groove 175 to open toward the radial direction outward is provided on the upper surface side of the retainer member 100.COPYRIGHT: (C)2015,JPO&INPIT【課題】旋回するコード状切断部材の先端で雑草等の切断を行うようにガイド部材を備えた草刈機用回転刃において、より効率的な切断作業を行うことができる草刈機用回転刃を供する。【解決手段】草刈機用回転刃A1は、草刈機Bの回転刃取付け軸14に取付けられて回転させられる保持部材100と、保持部材100に基端側が保持され、先端側が半径方向外方に導出させられたコード状切断部材4aと、保持部材100の下位において当該保持部材100に対してその回転軸心を中心として相対回転可能なガイド部材200と、を備え、保持部材100には、その上面側において、半径方向外方に向けて開放する周溝175を形成する保護部材170が設けられている。【選択図】 図2
