It is an innovative and progressive approch to overcome the problems of separate alignment of electric motor, gearbox and transmission line. Spherical thrust bearing Housing within the Gearbox eliminates the requirement of separate thrust bearing housing and will provide capacity to take screw thrust. This convenient thrust arrangement is integrally mounted within the single piece reducer unit to produce a rugged, compact package for all your extruder requirements. The inline direct assembly of hollow output shaft to screw barrel of the machine saves ample space and makes installation easy The screw can be removed without disturbing barrel and reducer.