Patent ID: 8272454

Claim:
A cutting unit for a cutting device, comprising: a rotary cutting tool; an electric motor capable of rotatably driving the rotary cutting tool; a gear train capable of transmitting rotation of the electric motor to the rotary cutting tool and reducing a rotational speed of the electric motor in plural stages; a gear chamber capable of accommodating the gear train therein; a partitioning member capable of partitioning the gear chamber at a midpoint of a transmission path of rotation of the gear train; a spindle having the cutting tool mounted thereto; an intermediate shaft positioned between the electric motor and the spindle; a drive gear rotatable with a motor shaft of the electric motor; and a driven gear and an intermediate gear rotatable with the intermediate shaft, the driven gear being engaging with the drive gear, wherein the partitioning member is positioned between the driven gear and the intermediate gear; the intermediate shaft has a first end on a side of the driven gear and has a second end on a side of the intermediate gear, and the first and second ends of the intermediate shaft are rotatably supported by a motor base and a gear chamber cover, respectively.