SZL series cone double-screw extruder gearbox is a special mechanical drive device designed to match with conical double-screw extruder. The device decelerates and increases the torque of the power from master motor through gearbox before exporting it to the long shaft of distribution box that drives short shaft through a pair of slender cone screw gear with drive ratio of 1: 1. Long shaft and short shaft drive short screw at the same angle as screw to extrude high-quality products in the way of different direction and outward turning.

This series gearbox is designed according to the standard of JB / T9050.1_1999. The gears are made of high strength alloy steel. The gear goes through the process of carburizing quenching heat hardening and gear grinding to achieve the precision of grade 6(GBL0095-88) The whole unit is small volume, high carry capacity, stable drive, low noise and high efficiency.