This is a loaded question because there is not one standout screw conveyor manufacturers, there are several major players, several who are really good in one area and lots of others just trying to make a living.
Screw Conveyor Articles
CEMA stands for the Conveyor Equipment Manufacturers Association (CEMA). Their web address is www.cemanet.org.
The screw conveyor trough on a screw conveyor is the housing that contains the screw and that the powder bulk material rides on. Like most screw conveyor parts, the term has some loose affiliation with the agricultural industry.
The trough end on a screw conveyor is the end plate that supports the screw, bearing and shaft seal. Like most screw conveyor parts, the term has some loose affiliation with the agricultural industry.