To solve the problems that a gate cutting operation for a casting which has been generally performed heretofore is always accompanied by risk, and additionally, long time is taken for the operation.

The cutting apparatus for a bar-shaped material comprises a cutting implement for a bar-shaped material including: in casing, a driving motor; a hydraulic system operating by the driving motor; a movable blade fitted to the tip of the hydraulic system; and a fixed blade receiving the movable blade, and cutting a bar-shaped material arranged between the fixed blade and the movable blade. The cutting implement is freely detachably loaded to a device capable of retaining a three-dimensional position such as a balancer and a crane, and the cutting implement is arranged at an optional three-dimensional position.