Abstract: An electric cutting tool 100 includes: a body portion 2 accommodating a driving portion 6 for rotating a circular saw blade 1 and a power transmission mechanism for transmitting a power of the driving portion to the circular saw blade; and a surface table 5 supporting the body portion 2, in which the circular saw blade 1 is supported by a shaft 1a that is disposed between a shaft 6a of the driving portion 6 and the surface table 5. In such electric cutting tool 100, the power transmission mechanism is provided with a pair of helical gears 7c, 7d arranged on the same shaft, and the paired helical gears 7c, 7d have tooth traces directed in a same direction. According to such structure, in the electric cutting tool 100, thrust load can be reduced.

Abstract: A motor (6) having a motor shaft (6a), a circular saw blade (1) having a saw blade shaft (1a) parallel to the motor shaft, a housing (2) accommodating the motor and the circular saw blade and having a handle (14) at the rear thereof, a surface plate (4) connected to the housing (2), a start end gear (7a) fixed to the motor shaft, a terminal end gear (7b) fixed to the saw blade shaft, and an intermediate gear (7c, 7d) located between the start end gear and the terminal end gear are included. The start end gear, terminal end gear, and the intermediate gear are meshed each other to transmit, to the circular saw blade, rotation of the motor to be decelerated as rotation in the identical direction. The intermediate gear is positioned rearward of the plane including the motor shaft and the saw blade shaft.