Customized for your application

AFC Spiralfeeder™ Flexible Screw Conveyor System

Introducing the market’s most versatile, customized solution for moving bulk materials.

Other companies may be able to sell you a flexible screw conveyor, but can they provide you with a complete engineered system, tailored to your specifications? With 30+ years of expertise, AFC offers so much more than just a product. Work with one of our factory service engineers before, during, and after the sale to ensure your product achieves your spiralfeeder needs, including on-site evaluations through our Manufacturer’s Representative Network and free product testing in our fully-equipped test lab.

What is it

The SPIRALFEEDER® is an enclosed tubular conveyor designed for conveying powders, granules, blends, crystals, flakes and a wide range of other materials. Typical applications include the conveying of bulk solids into overhead surge hoppers or the conveying of materials from one processing point to another, efficiently, quietly and dust-free.

How it works

The spiral (round/flat/knife) coupled directly to a motor/drive, rotates concentrically within the stationary outer tube. Both the pitch and rpm of the spiral creates a positive directional displacement of the material within the outer tube, propelling the material towards the outlet. The material is conveyed in an “en masse” fashion from point of entry (inlet) to point of discharge (outlet).


  • Low Cost
  • Low Maintenance
  • Only (1) Moving Part
  • Easily Installed
  • Easily Cleaned
  • Dust-Tight
  • Flexible
  • Quiet
  • Rugged Construction
  • Quick Disassembly
  • No Air
  • No Vacuum
  • No Internal Bearings

Construction Features

The SPIRALFEEDER® is available in carbon steel with durable industrial coatings or in stainless steel with industrial or sanitary finish.

  • F.D.A./U.S.D.A. Approved abrasion resistant U.H.M.W. polyethylene outer tubes
  • Heat treated spirals (round/flat/knife) Heavy duty construction

Automatic Operation

The SPIRALFEEDER® can be interlocked with a wide variety of controls to automate your process operation, in addition to factory engineered/pre-wired controls to suit your exact process requirements.


AFC manufactures a complete line of tubular SPIRALFEEDER® systems and related material handling equipment for the chemical, food pharmaceutical, plastic and other industries. We offer both standard and custom engineered systems to meet your specific needs.


AFC delivers top-quality service to match top quality equipment. From first survey to installation, AFC is “on call” to serve your needs.

Test Facility

AFC offers free product testing and process analysis in our modern, fully-equipped test facility. Most applications can be replicated and demonstrated to insure a higher level of application reliability in advance of a purchase decision. Customer participation is always welcomed.

The new raw material hopper and conveyor system is working well. Thanks for the great service.
Dan Cassidy
Solvay Specialty Polymers

Stationary Flexible Conveyor Systems

Spiral Types

The Round Spiral

Provides maximum flexibility and strength, due to the round cross sectional design.

The Flat Spiral

Provides greater conveying performance at a reduced rpm.

The Knife Edge Spiral

Developed by AFC to handle difficult materials, which tend to cake, pack or smear, challenging most traditional mechanical conveyors.

Additional Products

Portable Spiral Feeder

Batch-weigh System

Bag Dump Station

Get Started building your custom conveyor system.

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