QA451 Sizing Screen

QA451 Sizing Screen

Formerly the QA450 or Extec S-7 Doublescreen

The world’s only three deck Doublescreen, the formidable QA451 features two inline 10′ x 5’ screenboxes for unrivalled throughput and control.

As with the QA440 the QA451 now incorporates:

  • A new larger chassis
  • Longer, faster stockpiling conveyors
  • Higher material feed rates

All allowing for greater productivity, and massive stockpiling capabilities.

A new 3 deck Doublescreen box along with 4 product conveyors allows up to 5 products to be produced.

  • Two 3 deck boxes including a primary box capable of very steep inclines
  • 10’x 5’decks using the same highly effective meshes as the S-6, S-3 and re-circulation system
  • Equivalent to a 20’x 5’top deck, 20’x 5’middle deck and 18’x 5’bottom deck

Offer the same advantages as the other S-series screen boxes:

  • Higher throw and frequency than competitors
  • Now also able to adjust the amplitude of each box to suit the type of screening
  • Each screen box has fully independent drive and settings

Key Features:

  • Operation weight (in total) 34000 kg
  • Transport weight (in total) 38620 kg
  • Engine maker / Engine model Deutz 2012
  • Engine output 74.9 / 2200 kW/rpm
  • Transport length 17641mm
  • Transport height 3850mm
  • Transport width 2752mm
  • Working length 18211mm
  • Working height 6477mm
  • Working width 18374mm
  • Hopper length 13ft / 3962mm
  • Size of vibration grid(with wing) 4286 x 2418 mm
  • Size of vibration grid (without wing) 3096 x 2418 mm
  • Tip angle of vibration grid 34°
  • Loading height of vibration grid 3546mm
  • Size of screen 1 3048 x 1524mm (10′ x 5′)
  • Size of screen 2 3048 x 1524mm (10′ x 5′)
  • Angle of screen box 1st 29°
  • Angle of screen box 2nd 25°

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