4-axis vertical turning machine for workpieces up to Ø 1,000 mm and 2,000 kg in weight. The 4-axis configuration allows cycle time savings of up to 40% when compared to a 2-axis configuration. The Mikroturn 100 achieves a size and form accuracy of < 2 micron and a surface finish (Ra) of 0,1 - 0,4 micron in workpieces up to 70 HRC. Key features: -Hydrostatic main spindle with a < 0.2 µm run-out and integrated torque motor. -Hydrostatic X/U- and Z/W-slides with a ± 0.1 µm repeatability -Rigid natural granite machine base with an integrated system of vibration dampers -Headstock housing of natural granite for improved static and dynamic stiffness and thermal stability -Sealed type direct linear slide measuring system -External hydraulic service unit. -Siemens 840D SL control with a 0.01 micron resolution