Gearbox for twin screw plastic extruder

1. General introduction SZ Serial Gearbox for Conical Twin-Screw Rod Extruder is a special driving unit matched with conical twin-screw rod extruder. It consists of two parts, namely, the reduction box and the distribution box.

After reducing speed and increasing torque of the motor, it out puts the motive power to the distribution box, then drivees the double output shafts(the included angle is the same with that of twin-screw rods) via a pair of small conical spiral gears with driving ratio of 1:1, thus to drive screw rods to rotate outward with different direction. 2.

Features of Product (1). There are involute cyclindrical gears in the gearbox, witch data and structure are optimally designed by the computer. (2). The gear are made of top-quality high-strength low carbon alloy steel after carbon penetrating, quench and teeth grinding .

It has high hardness on teeth surface, large bearing ability, small noise, smooth operation and high driving efficiency. (3).The material of the distribution box is nodular graphite casting iron and the gears have high-strength ground teeth, in which snake-shaped cooling water pipes are disbuted. (4).

The maximum input speed of the gearbox is normally not large than 1500rpm. (5). The temperature in work environment is -10°c~-45°c. When temperature is lower than 0°c, the lubricant oil should be preheated to +10°c before starting.