UG 400 is a cylindrical grinder designed for precision, high accuracy and reliability. Capacities: centre height 100 mm; distance between centres 400 mm; max longitudinal travel 425 mm; wheel Ø350×50 mm; bore 127 mm; workpiece weight on centres max 30 kg. Specs: wheel speeds 1,800–2,000 t/min; work spindle stepless 50–780 t/min, rotatable 0–90°; collet 25 mm; spindle cone 4 CM; tailstock cone 3 CM; motors 3.7 kW (wheel) and 1 kW (workpiece); 3x400 V 50 Hz; machine weight ≈2200 kg; dims 3000×1750×1600 mm; table speed up to 5 m/min; table tilt 3/30°. Accessories: 2‑axis digital readout, internal grinding attachment, redressing device, swivel dresser, coolant system, set of grinding wheels, set of driving dogs, Positionar Passiv. Achieves tight tolerances; typical sectors: automotive, aerospace, medical, watchmaking, machine tools.