Description Overview Welex extruder 4.5 inch barrel diameter Model 4.50 - 36:1 L/D - vented barrel - new Year 1986 Drive and Gearbox 11.67:1 Lufkin gearbox 250 hp DC motor Emerson Mentor DC drive Barrel and Heating Zones Water cooled barrel 6 barrel zones 5 die zones Screen Changer and Hydraulics 6 inch MGB slide plate screen changer Accumulator hydraulic power pack Pelletizing and Drying System Beringer WRP-12 water ring pelletizer with 2 hp cutting head 2 hp Carter Day model CWK1 spin dryer Water circulation pump and heat exchanger SpecificationsScrew diameter: 4.5 inches