ISO 7119:1981

Continuous mechanical handling equipment for loose bulk materials — Screw conveyors — Design rules for drive power

Establishes a method for the calculation of drive power of screw conveyors. Applies only to a screw conveyor used in a horizontal or inclined position for a regular, controlled and continuous supply of the bulk materials, excluding the special screws for the following uses: extracting, calibrating, mixing, moistening, inclined (above 20 ) and vertical screws.