WORK MACHINE

The present invention provides a work machine that has excellent motor support performance. A work machine that has: a motor that has a rotary shaft; a bearing that rotatably supports the rotary shaft; and a motor housing part that houses the motor. The motor housing part can be divided into at least two segments in the axial direction of the rotary shaft. At least one of the two segments: forms an integral structure that cannot be divided; and supports the bearing. 本发明提供一种作业机，其原动机的支撑性能优异。所述作业机包括：原动机，具有旋转轴；轴承，对所述旋转轴进行轴支承；以及原动机收容部，收容原动机；所述原动机收容部在所述旋转轴的轴方向上至少可分割成两个分割片，所述两个分割片的至少一者形成无法分割的一体结构、且支撑所述轴承。