Portable machine tool exports of chip removal, designed primarily for axial alignment or realignment, of large bodies bearing cylindrical cavities of axial /symmetrical, developed mainly in length, inaccessible and / or manipulated by conventional machine tools. Designed to perform on-site processing, overcomes the inability and / or difficulties, the nature of business / logistics of moving such large bodies and their connections or structural obstacles, the place of location. Allows the adjustment of the mold , gas pipelines, gas pipelines and aqueducts.