Work machine

A work machine that smooths a road surface by rotating a blade contacting the road surface, the work machine comprising:

• a motor that rotates the blade;
• a power supply device having a battery pack that supplies electric power to the motor;
• and
• a fan that cools the motor and is provided between the motor and the blade,
• wherein a casing of the power supply device is disposed above the motor,
• the battery pack is a portable battery attachable to the casing and detachable from the casing of the power supply device,
• the fan is positioned coaxially with the motor shaft, is configured to rotate integrally with the motor shaft, and is located between the motor and the blade such that cooling air is directed toward the motor,
• the casing of the power supply device is configured to be mounted directly above the motor in a vertically stacked arrangement, and
• the battery pack is configured to be removably attached to the casing, allowing for easy replacement without disassembling the motor and the casing.