CA Trough Screw Conveyor

Wam Group

CA Trough Screw Conveyor

The modular CA Trough Screw Conveyor system is highly versatile offering numerous solutions for conveying powdery or granular materials. They are widely used all over the world in industries such as pet food, plastics processing, soap, washing powder and detergent processing, animal feed milling, wood processing, chemicals, environmental technology, cement, lime and gypsum processing, as well as mining.

The modular CA Trough Screw Conveyor system is highly versatile offering numerous solutions for conveying powdery or granular materials. CA Screw Conveyors are manufactured from carbon steel with suitable surface finishing. They are made up of a U or V-shaped trough equipped with at least one outlet spout, an end plate at each trough end, helicoid screw flighting welded on a center pipe with coupling bush at each end, two end bearing assemblies complete with shaft seal, a certain number of intermediate hanger bearings depending on the overall length of the screw conveyor, and bolted trough cover sections. Furthermore, CA Trough Screw Conveyors are equipped with a gear motor appropriate for the application.

Depending on the material to be handled, CA Trough Screw Conveyors come in a light, medium-heavy, or extra heavy-duty design.

All types are available with ATEX, Zone 22 certification.4

The light-duty version, CA_L, is mainly used to convey powders or granular materials in the production of pet food, in the plastics industry, as well as in soap, washing powder and detergent processing. The medium heavy-duty version, CA_P, is mainly used in animal feed milling, in wood processing, in the chemical industry, and in environmental technology for both municipal and industrial applications. The extra heavy-duty version, CA_E, is mainly used in cement / lime /gypsum processing, as well as in the mining industry.

According to the application, various types of screws, inlet and outlet spouts are available.


Trough in standard length modular flanged sections

Helicoid flighting welded on center pipe


Flanged end bearing assemblies protected against material infiltration by shaft seals

Robust cast iron body flanged end bearing assemblies with externally positioned bearings and manually adjustable packed gland seals

Square or rectangular outlet spouts with integrated WAM standard drilled flanges

Drive units mounted at inlet or outlet end: Bare shaft, Direct compact gear motor drive, Direct gear motor drive with semi-elastic coupling, Offset gear motor drive with chain transmission, or Offset drive with belt transmission

For medium heavy-duty version: Splined shaft couplings (bolted couplings for special applications) and Intermediate cast hanger bearings with greased or self-lubricating slide bushes

For heavy-duty version: Flanged shaft couplings and Intermediate steel or cast hanger bearings with slide bushes


Industrial quality product

Modular design features ensuring matching spare parts


Bolted trough cover modules (end module with integrated inlet spout)

Square, rectangular or circular substitute/additional inlet/outlet spouts with or without connecting flange

Trough feet

Overflow hatches

Screws (augers) in various configurations (ribbon flight, paddles, others)

Special shaft seals (gas or air-purged, grease chamber, others)

Different drive configurations




Aero Mechanical Conveyor from Spiroflow

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Southwest Equipment Group provides quality solutions for projects of all sizes. When you need a reliable, efficient way to move or process product, we can engineer a solution for you.