No-load electric saw

The present invention is to provide a no-load electric saw that is cut and transferred while the saw blade is linearly reciprocated by the forward and reverse driving force of the motor. That is， the present invention is connected to the motor (M)， the forward and reverse rotation screw 10 in the housing 100; It is screwed to the transfer screw portion 10 and connected to the acceleration clutch portion 20 that is pitch-transferred， linearly reciprocated within the housing 100， and a straight rod portion 30 provided with a saw blade holder 32 at the end. It is made， including， the acceleration clutch portion 20， the outer ring boss 24 is provided with an operating chamber (24a) therein， the screw screw is coupled to the feed screw 10， the outer ring boss while being transferred to the pitch ( It is characterized in that it consists of an inner ring boss 22 that is linearly reciprocated in the operating chamber (24a) by the key combination with 24). The use of the no-load electric saw has the advantage of significantly reducing battery consumption as well as preventing overload of the motor in the start section in which the forward and reverse rotation directions of the motor are switched while the saw blade cutting stroke is extended in a compact structure.