Screw Conveyor Flight and Flight Dimensions - Atlas Yem
Spiral Leaf
Spiral Leaf
The conveying performance of a screw conveyor depends directly on the geometry and wear resistance of its spiral leaf. A damaged leaf causes material backflow and reduced capacity.
Screw Conveyor Flight
The spiral leaf is the main component of screw conveyors, transporting material from one point to another using a rotating helical blade fixed to the shaft. Atlas Yem spiral leaves are manufactured from high wear-resistant steel or with hardened surface coating options for abrasive materials. Precise pitch and diameter tolerances optimize material flow while preventing overflow and jamming. Single-piece or segmented design options ensure easy field installation and stock flexibility.
What Are Screw Flight Dimensions?
Screw flight dimensions are defined by four basic values: outer diameter, inner diameter (shaft diameter), pitch and sheet thickness. The outer diameter determines conveying capacity, while the pitch determines the distance between flights and how far the material advances with each turn. Sheet thickness directly affects the wear life of the flight. Atlas Yem manufactures screw flights in different diameters and pitches, custom-made to your needs.
Which Conveyors Use Screw Flights?
Screw flights are used in U-trough screw conveyors and in enclosed tube screw conveyor systems. The tube screw conveyor is preferred especially where dust-free and inclined conveying is required. When choosing a flight, the conveyor type, the material to be conveyed and the existing flight dimensions should be evaluated together.
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