PROBLEM TO BE SOLVED: To provide an electrically driven work machine having a motor in which adhesive or resin is easily filled in a through-hole of a rotor and a magnet is surely fixed to the through-hole.SOLUTION: A lawn mower that is an example of an electrically driven work machine includes a motor having a cylindrical-shaped rotor 52 rotatable about an axis. The rotor 52 includes a rotor core 170 having a plurality of plate-like permanent magnets 172 and a plurality of magnet holes 171 that are cylindrical and into which each permanent magnet 172 is inserted in a state of spreading in an axial direction and a circumferential direction. Each magnet hole 171 is formed so that an air gap (outer peripheral side portion 174b) is created on an outer side surface 172a in a radial direction of the inserted permanent magnets 172.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2020,JPO&INPIT【課題】ロータの貫通孔に対する接着剤あるいは樹脂の充填がし易く、磁石が確実に貫通孔に固定されるモータを備えた電動作業機を提供する。【解決手段】電動作業機の一例である芝刈機は、円柱状であり軸周りで回転可能なロータ52を有するモータを備えており、ロータ52は、複数の板状の永久磁石172と、円筒状であり永久磁石172がそれぞれ軸方向及び周方向に広がる状態で挿入される複数の磁石孔171を有するロータコア170と、を備えており、各磁石孔171は、挿入された永久磁石172における、径方向の外側面172aに対して空隙(外周側部174b)が生じるように形成されている。【選択図】図6