PROBLEM TO BE SOLVED: To provide a rotary working implement without generating remaining tillage over the longitudinal direction of a tine shaft.SOLUTION: Eccentric tillage tines E are arranged in positions one by one from a center of the longitudinal direction P-P of a tine shaft AX to both ends respectively with the distance L, and straight-blade parts 45B of normal tillage tines 45, which are adjacent to the eccentric tillage tines E, contact with the rotating loci of tip ends Et of the eccentric tillage tines E and the virtual surface including the radius of the tine shaft AX.COPYRIGHT: (C)2013,JPO&INPIT【課題】爪軸の長手方向にわたって残耕を生じないロータリー作業機を提供する。【解決手段】偏芯耕耘爪Eを爪軸AXの長手方向P-Pの中央から両端に向かってそれぞれ距離Lだけ離れた位置に1つずつ配置し、偏芯耕耘爪Eに隣接する普通耕耘爪45の直刃部45Bが偏芯耕耘爪Eの先端Etの回転軌跡と爪軸AXの半径を含む仮想面に接するように構成する。【選択図】図6