Sandvik Construction provides solutions for construction industries in niches such as quarrying, tunneling, demolition, dimensional stone, recycling and civil engineering.

QA451 Mobile doublescreen

Former Models: Extec S-7, QA450

Our QA451 is the world's only triple deck Doublescreen and offers you unrivalled throughput and control. We developed this machine to provide you with massive stockpiling capabilities.

The QA451 is a formidable solution with two inline 10' x 5' / 3 x 1.5m screenboxes, a large feed hopper and extended conveyors.We have designed the QA451 to work in closed circuit with our tracked crushers. You can optimise the feeding position to upstream units as the fourth product conveyor slews and raises / lowers hydraulically. To provide ultimate flexibility the QA451 can also work as a stand-alone screening and stockpiling system. In this mode the unit can produce four sized products with fifth oversize material scalped off at the grid.

Other models within this range of screens include the QA331 and QA441.

Features and Benefits:

  • High production capabilities due to its large screening area
  • Oversize conveyor which features both hydraulic raise / lower and hydraulic slew functions
  • User friendly control panel with sequential start-up for ease of operation.
  • Hydraulically folding walkways for ease of maintenance and set up
  • Full radio remote control as standard for safe and easy set up
  • Designed for optimum fuel economy to lower your operating costs
Key Specifications
Screen Box 20' x 5' / 6 x 1.5 m
Engine C4.4 74.5 kW / 100 hp
Transport Length 18.37 m / 60' 3"
Transport Width 3.20 m / 10' 6"
Transport Height 3.55 m / 11' 8"
Weight 34,000 kg / 74,957 lbs

Please note all weights and dimensions are for standard units only.

Article functions

Contact us