STUDER S 20-OC is a cylindrical grinder engineered for precision, high accuracy and reliable operation. Working capacities: centre height 80 mm, distance between centres 400 mm; grinding diameter 80 mm; grinding length 400 mm; wheel Ø300×30 mm, bore 127 mm; workpiece weight on centres max 20 kg; angular displacement 30°; table tilt 30°. Key specifications: wheel speeds stepless 60–1200 t/min (rotatable 90°); table speed stepless 100–3500 mm/min; spindle taper and tailstock taper 2 CM; external grinding wheel motor 4.5 CV; voltage 3x380 V 50 Hz; machine weight ≈1900 kg; dimensions L1500×W1400×H1600 mm. Accessories: tailstock with fine adjustment, coolant system, safety device. Achieves tight tolerances; suitable for automotive, machine tools, aerospace, medical and watchmaking industries.