Screw Feeders

Carolina Conveying offers both volumetric and gravimetric style Screw Feeders.


Rite-Rate Volumetric Screw Feeders

Volumetric screw feeders are used to accurately discharge product at a controlled rate. The feeder has a U shaped feed trough with rotating agitating blades that keep the product alive and flowing down into the feed screw. This unit works well on products that are more likely to bridge, rathole or have large clumps that need breaking up. Quick release options on the feed tube, feed screw and front panel make this unit easy to clean and ideal for sanitary applications or applications require frequent product changes. This unit is available in mild steel or stainless steel. Sizes range from 1 inch through 4 inch feed screw with numerous types of screw designs to best control product flow.



Rite-Weight Gravimetric Screw Feeders

The Screw Feeder is also used for gravimetric applications. This includes batch loss-in-weight, batch gain-in-weight, continuous loss-in-weight and continuous gain-in-weight. For loss-in-weight applications, the feeder is mounted on load cells and a controller monitors the weight loss from the feeder to accurately manage batch sizes or discharge rates. Typical accuracy is +/- 0.5%



Batching Systems

Carolina Conveying has supplied numerous systems, integrating product storage and feeder accuracy together. Product storage can be with our Bulk Bag Discharge Station, Solibin IBC System, Hoppers or Bag Dump Stations. For hoppers with poor flowing products, we offer the Bin Activator and Soliflo to insure product discharge. Allowing Carolina Conveying to integrate your system requirements not only ensures accurate batches, but also product flow from storage.

Features & Benefits:

  • Accurate and variable feed rate control
  • Capable of very low feed rates
  • Integral inlet hopper
  • Rotating agitator blades keep product flowing down into the feed screw
  • Multiple feed screw designs to best handle all types of products
  • Compact design
  • Mild Steel or Stainless Steel Construction
  • Weighing options for more accurate batch sizes or feed rates


  • Volumetric
  • Gravimetric
    1. Batch Weighing
    2. Continuous Feeding


Mild Steel or Stainless Steel Volumetric or Gravimetric
Integral Hopper Accurate & Variable Feed
Food Chemical
Plastics &
Mining &
Volumetric Feeding Batch Loss-in-Weight Continuous Loss-in-Weigh