... noise, long operation time. 2. transmission gearbox for single screw extruder machine Main features:1.The material ... changed to vertical installation according to customers’ requirement.5.Efficiency transmission, low noise, long operation time.6.High torque transmitting ... any specification of extruder screw barrel and injection screw barrel for Haitian, Demag, Engle, Nigro bossi, arburg,NPM, BOY, ...