The mainframe of a screw extruder consists of three systems: extruding system, wheel system and heating and cooling system.

Extruding system, the most critical part of an extruder, is made up of a screw and a machine barrel.

The main function of wheel system is screw driver which can ensure the torque and speed of screw working.

The heating and cooling system of the screw extruder is mainly used to ensure temperature control in the forming of materials and extrusion system.