Full definition
Conveying equipment using a rotating helicoid (Archimedean screw) inside a U-trough or closed tube to move granular, powder, or semi-liquid materials continuously. Capacities: 1-500 m³/h. Standard lengths: up to 40 m; longer runs use units in series. Fully enclosed for dust and spill control. Applications: flour, cement, pellets, sludge. CEMA 350 standard. Not suitable for very abrasive materials (accelerated helix wear) or materials that degrade under mechanical shear pressure.