Robot for precise spot welding, assembly and packaging tasks with a repeatability of ± 0.06mm. Organically formed components give a dynamic appearance and they ensure high mechanical torsional and bending stiffness. Smooth transitions between structural shapes improve the mechanical force transmission and increase the dynamic properties. No additional housings, every component has its technical function; ductile cast iron for components subjected to major forces and cast aluminum for dynamically stressed lightweight components. Minimized amount of material saves costly resources; weight and energy consumption is reduced, acceleration increased.