Albemarle - Shaftless Screw Rotors
Shaftless flights’ uses include: Greasy and sticky media such as in cleaning systems and similar. Why pressed axleless flights and not rolled? Unlike rolled flights, shaftless pressed flights have the advantage that they have the same material thickness in the inner and outer diameters, giving a better durability and strength.
A shaftless screw rotor is mainly used for viscous and oily or sticky media. This could be a foodstuff factory, a wastewater treatment plant, or the food industry. Shaftless screw rotors where the flights rotate inside the screw conveyor housing are also used as e.g. a screw feed stoker to transport wooden pellets, bulk material, and other types of granulates. This type is flexible and resilient within certain tolerances.