WAM Trough Screw Conveyors CA

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Product Description:

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 centre 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.



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 centre pipe

  • Powder-coated

  • 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

    • Offset drive with belt transmission


For light-duty version:

  • Splined shaft couplings (bolted couplings for special applications)

  • Intermediate cast or fabricated hanger bearings with greased or self-lubricating slide bushes

For medium heavy-duty version:

  • Splined shaft couplings (bolted couplings for special applications)

  • Intermediate cast hanger bearings with greased or self-lubricating slide bushes

For heavy-duty version:

  • Flanged shaft couplings

  • Intermediate steel or cast hanger bearings with slide bushes


Offset drives with belt transmission and with semi-elastic coupling



  • 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

For medium heavy and heavy-duty version only:

  • Screws manufactured from special wear-resistant materials


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