The Extracon type extractors are machines based on the principle of rotating Archimedes screws with the unloading at the centre of the circular silos. They are normally used for extracting wood-based particles such as: sawdust, shavings, chips, work scrap and pellets.


They represent the amalgamation of many innovative solutions aimed at achieving maximum productivity:

  • High extraction capacities with minimum power requirement.
  • Constant and uniform extraction even in the presence of fibrous and compacted material and without separating them.
  • Absence of any spontaneous flows inside the discharge hopper.
  • Routine maintenance can be carried out even on the full silo.
  • Suitable for silos up to 12m diameter.

Technical characteristics

One or two spiral shafts are mounted according to the extraction requirements.

For high production capacity, the machines normally have robust beams able to support the screw shafts on their extremities.

In the case of applications with particularly abrasive materials, PMI provides technologically advanced wear-resistant coverings applied to the transport surface of the spirals, on the areas concerning tubing and on the crumbling teeth fitted on the periphery of the screws.

Extraction capacity:

Versions with support beams for the screws:
extraction capacity up to 650m3/hr*.
*Depending on the type of material handled.
Extracon series P, M, G, K, S
Versions with cantilevered screws and without supporting beams:
extraction capacity up to 200m3/hr*.
*Depending on the type of material handled.
Extracon NPS, NS, AWG, AWK, AWS


Download brochure download: PMI Extracon 2017 (656.86KB)
Language: EN download: PMI Extracon 2017 (651.03KB)
Language: IT