This contains screw + barrel both are made from EN-4113 nitrite & hard chrome plated for long life
- Screw is divided in to three zone:-
- Feed zone
- Compression zone
- Metering zone
- Screw is fitted on a suitable heavy thrust housing with thrust & roller barring to with stand thurst pressure(helical gear box).
- Water circular jacket of barrel is provided in feeding zone side to control the temperature.