Pit & Quarry, June 2013
SPECIAL SECTION CRUSHING SECONDARY BREAKING Cone crusher has high power to weight ratio The track mounted CST cone crusher from Screen Machine Industries Inc features a 51 in quarry duty cone crusher that offers a high power to weight ratio The plant features a vibratory shaker screen thats located between the feeder and cone crusher The crusher utilizes Grade 80 steel construction that the company says will extend the machines overall life Features include Caterpillar diesel power a heavy duty tracked undercarriage and wireless remote control movement and operation www screenmachine com Suspension system absorbs vibrations stress waves The Doosan DXB260H hydraulic breaker features two speed control of breaker frequency for improved efficiency in rock breaking applications Delivering up to 600 blows per minute the 5400 lb DXB260H is designed for use with excavators in the 27 to 37 metric ton range Rated in the 8000 ft lb impact energy class the DXB260H requires a hydraulic flow rate of between 395 and 635 gallons per minute With two speeds the breaker frequency can be easily adjusted between short and long stroke settings This allows the operator to match the breaker frequency to the ground conditions for optimized productivity Standard features include a cradle mounted grease station and blank fire protection The breakers suspension system extends excavator life by absorbing vibrations and stress waves www doosanequipment com 28 PIT QUARRY June 2013 www pitandquarry com
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