Shaftless Spiral Screws
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Shaftless Spiral Screws consist shaftless ribbon is restricted in terms of material, dimensions and versions. Diameters from 80 to 600 mm in steel and stainless steel The ribbon can be constructed with the inner spiral, also known as an auxiliary spiral or insert. To empty the sludge tank, the spirals are weighted by doubling or tripling the ribbon so that the torque needed to empty the tank can be transferred to the ribbon.
