FEATURES Vertical Hinged Chambers : Pressing Box eliminates the difficult task of removing box for replacement of worms. Chambers : Reduces time and labour for relining of Cage Bars. The main Shaft of the Expeller is of alloy steel construction, fitted with High Pressure Worms, hard faced, with a highly wear resistant alloy. Shaft Withdrawal : The main Worm Shaft can be withdrawn easily without disturbing the gear section. The thrust of the pressure worms is taken upon large spherical roller thrust bearings.