STUDER S 30-12 is a Cylindrical grinder, engineered for precision, high accuracy and reliability. Capacities: centre height 175 mm, distance between centres 700 mm, max longitudinal travel 700 mm, grinding wheel Ø400×50 mm, bore 127 mm, workpiece weight on centres max 80 kg; wheel head 0–90°, workpiece spindle rotatable 90°, table angular displacement 8°, table speed up to 6 m/min. Specs: wheel speeds 6 steps 1500–2400 t/min (35 m/s), workpiece spindle stepless 30–675 t/min, spindle taper 5 CM, tailstock taper 3 CM, supply 3×380 V 50 Hz, wheel motor 3 kW, total power 13 kVA, machine dims 2200×1300×1800 mm, control 900×500×1700 mm. Accessories: tailstock with fine adjustment, internal grinding attachment, redressing devices (lateral, radius), paper filtration, set of flanges, wheel guard, SENSITRON. Achieves tight tolerances; typical sectors: automotive, aerospace, machine tools, medical, watchmaking.