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3.Technical Details for Twin Screw Extruder3.1 Description of the Individual Units3.1.1 Main Drive Unit DC motor Technical data Power: 200 kW Max. speed: 1500 rpm Protection degree: IP21S 3.1.2 Reducing and distributing gearbox Made by Italy ZAMBELLO RIDUTTORI s.r.l Model: ZT64/75 CO-HT Ratio: i=3 Input speed: 1500 rpm Output speed: 500rpm Maximum Torque: 3263 Nm 3.1.2.1 Gears The design and manufacturing are carneo out according to AGMA 2001 standards. The gears of the primary reducer unit are made of case-steel of the 18NiCrMo5 type and have a helical toothing. The profile is ground with a higher quality than of AGMA 10 so to ensure lowers noise and efficient use. The shafts and the toothed wheels of the distribution gear unit are made of high-quality special steel with excellent tensile strength. 3.1.2.2 Bearings The gearbox is provided with taper roller bearings and cylindrical roller bearings of excellent makers and considerable size. The thrust bearings are of the