QA340 (S-5)

The QA340 (S-5) is the original doublescreen and was the first screener produced with the doublescreen technology.   It represents the greatest innovation in mobile screening systems as the QA340 (S-5) resolves the conflicting principles previously associated with providing larger screening areas on mobile plant.

Although possessing many customer focused features, at the heart of the QA340 (S-5) is the Doublescreen Box. This enables the screener to incorporate such mould breaking features as:
 

• Independent screen-box slope
• Independent screen-box vibration
• Independent screen-box amplitude
• Independent screen-box speed

All resulting in fantastic output of accurate, quality products!

The Doublescreen box allows for over twenty different screening angles. Screening efficiency is maximized as material flow is directed by the angle of the screen box resulting in:
 
1. A steep angle for the primary screen-box ensures that the majority of the material is processed in the initial impact area.

2. The majority of the undersize is removed during initial impact.

3. Only near-size material passes to the secondary screen-box. This may be set flat enough to ensure any remaining material is screened efficiently.

4. Clean gradings, at very high out put, are produced as material is exposed to large screening area.

With all the above features the QA340 (S-5) promises to be the ultimate mobile screening system for the truly serious contractor or quarry operation. The QA340 (S-5) represents the greatest innovation in mobile screening systems as it finally resolves the conflicting principles previously associated with providing an immense screening area on truly mobile plant.

The primary and secondary boxes consists of two 8 x 5 decks.  This provides the customer with a 16 x 5 top deck and a 16 x 5 bottom deck.

Key Features and Benefits of the QA340 (S-5):

• Two individual screening units, each having its own separate drive and each being independently angled
• The throughput of this screening facility parallels that of a conventional screen box of  22 ft. long
• Separate hydraulic adjustment of the screening angle of each screen box giving over twenty different combinations of screening angle
• Each screening unit of the doublescreen system has uniquely high inertia ensuring that superb separation is carried out over the full surface of the screen decks
• Unique independent doublescreen box design allows for precision screening with high rates of production
• Direct drive vibrating grid and screen boxes give enhanced efficiency with minimum maintenance – no V-Belts
• Self-loading hydraulic bogie gives independent road transportation without the use of low loaders
• Rapid ratcheting tensioners give fast mesh changes
• Patented screen box lift mechanism to ease mesh change
• The machine is driven diesel hydraulically and is fully self propelled on tracks.  It has high ground clearance and generous approach angles
• High efficiency hydraulic system utilizes Piston type motors to maximize power
• Unique design spreader plate to spread material across the full width of the screening facility whilst maintaining the velocity of the material particles
• Chassis – This is of the most modern computer assisted design capable of withstanding the stresses generated by high speed highway towing or track slewing over the roughest of terrain
• Compact enough for the inner city, precise enough for sand & gravel, yet powerful enough for volume aggregate production
• Heavy duty construction – used worldwide in quarries and gravel pits
• Hopper fitted with variable speed belt feeder
• Main conveyor has variable speed and variable angle to facilitate the handling of the widest range of material
• Three large capacity stockpiling conveyors are fully integrated into the machine
• Hydraulic walkways deploy in seconds, giving low access height and safe working area for maintenance and mesh change
• Steel pipe runs used in hydraulic system gives improved temperature control and extended hose life

Also available with optional:

• Remote Control
• Shredder Box
• Vibrating Grid
• Patented Transport Bogey

With all the above features the QA340 (S-5) promises to be the most definitive mobile screening system for the truly serious contractor or quarry operation. The QA340 (S-5) represents the greatest innovation in mobile screening systems as it finally resolves the conflicting principles previously associated with providing an immense screening area on truly mobile plant, making the QA340 (S-5) the most productive mobile screen in its class.