7 Machines and structural parts therefor not for land vehicles, namely, machines and machine tools for the cutting and forming of materials; electric motors not for land vehicles, namely, electric motors for machines, linear and rotary alternating current synchronous motors for machines, reluctance motors for machines; motors and structural parts therefor not for land vehicles, namely, direct current motors, alternating current servo motors, external rotor motors; engines not for land vehicles; transmission chains not for land vehicles, namely, chains used in transmissions; driving motors and structural parts therefor not for land vehicles, namely, direct drive motors; transmission shafts not for land vehicles; direct drives, namely, direct current motor drives, alternating current servo motor drives, direct rotary table drives; electric servomotors not for land vehicles; positioning machines and structural parts therefor not for land vehicles, namely, machine tools positing tables in the nature of XY positioning tables