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What are the most important parameters of a threaded element?

Dec 29, 2017

screw elements-kakshine.jpg

Essentially, all elements of the co-rotating twin screw extruder are an adaptation or variation of the basic "Erdmenger" geometry. The following basic dimensions can be varied here according to their interdependency:


OD/ID ratio

Outer diameter and inner diameter matched to the required OD/ID ratio

Flight pitch of the screw

Length of the element

Machine-specific clearances between the element and the barrel hole or the element and the adjacent element.