Differential Feed Screws
Thayer Scale’s innovative, proprietary compound flight feed screw features a forward-feed helix and a reverse-feed helix concentrically mounted to the same shaft. This design provides reliable material delivery at low flow rates without the complexity of a twin screw.
Benefits of our differential feed screw design include:
- A large diameter to prevent “boring” through products, or products bridging over the screw’s perimeter
- Differential action between flights to produce low flow rates with a high screw RPM
- Uniform and pulse-free feeder discharge
- Multiple screws with common diameters to eliminate feed tube changes and resulting dead zones