... ,which has two parts of the reducer and distribution box.It's special products of conical twin-screw extruder. Product features ... . High intensity of gear transmission, low noise.2, distribution box small helical gear cone Angle, using qualitative, 38GrMoAl by nc ... process, high precision, high hardness.3, adopt ductile iron box and high strength thrust self-aligning roller bearings design, reliable ...