This high precision grinding machine is specialized in internal/external grinding of rotating parts using cutting spindles exhibiting ultra-low radial runout (≤0.0005mm) and hydrostatic guides. The workpiece is spun between 10 to 200 rpm and the wheels are fed at 0.001 mm/min, both under CNC control allowing to achieve exceptional precision for turbine rotor journals and piston pins used in aerospace systems. Gear shaped grinding wheels are set automatically and mist collectors clean the workspace.