M.10Screw Conveyor Capacity and Power

Calculate capacity and required drive power from the screw geometry.

Standard pitch equals the diameter.

Results

Capacity
—
Volumetric capacity
—
Shaft power
—
Suggested motor (IEC)
—
Transport / no-load / lift
—
Incline factor C
—

    This tool is for preliminary sizing. Final design must be verified with material tests, the relevant standards and equipment manufacturer data.

    Formulas

    Volumetric capacity
    Q = 60 · π/4 · (D² − d²) · S · n · φ · C [m³/h]
    Transport power
    P_H = Q_m · L · λ / 367 [kW]
    No-load power
    P_N = D · L / 20 [kW]
    Lift power
    P_St = Q_m · H / 367 [kW]

    Note

    Trough loading and the λ factor are chosen according to the material’s flow and abrasiveness; the listed values are typical starting points. Above 20° incline, capacity drops quickly and a vertical screw conveyor calculation is needed.

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