Pit & Quarry, October 2016
TOP HAMMER BITS FOR SURFACE DRILLING FEATURE LONGER LIVES ATLAS COPCOS Powerbit top hammer bits for surface drilling tend to last longer than most top hammer bits the company says The top hammer bits provide users with increased productivity levels and work with all rock types according to Atlas Copco Enduro Extra surface treatment gives the bits superior strength to endure all rock types The bits feature a new bit shape with a harder stronger steel bit body Previously incorporated semi ballistic buttons have been replaced with Atlas Copco Secorocs trapezoid shaped buttons which are called Trubbnos www atlascopco us VIBRATORY SCREEN DELIVERS MULTIPLE PRODUCT SIZES SIMULTANEOUSLY MCLANAHAN CORP S MD vibratory screen serves the aggregate industry as a compact high capacity dry screening unit The vibratory screen produces multiple product sizes simultaneously as progressively smaller material sizes are separated from deck to deck Dried sand fertilizer iron ore wood pellets quick and burnt lime limestone grain gypsum salt sugar and animal feed are a few of the materials and applications in which the machine can screen efficiently According to McLanahan the design concept for this screen reduces the risk of blinding and pegging due to its ability to make a separation at a given size using a mesh aperture of greater size The MD vibratory screens come in widths ranging from 19 in to 78 in with one to five screen decks depending on the application It handles feed sizes as large as 3 in and can make size separations down to about 60 mesh www mclanahan com TURN AND TAP ROTARY CONTROLS PROVIDE QUICK ACCESS TO FUNCTIONS JOHN DEERES 870G LC production class excavator integrates an FT4 diesel engine that delivers power at 512 hp It features cooled exhaust gas recirculation a diesel oxidation catalyst and selective catalytic reduction It also includes a battery disconnect switch spin on fuel filters and two additional water separators to maintain long fuel filter life In its cooling system the excavator boasts an expansion tank that enhances air pursing provides makeup fluid when needed and improves overall cooling efficiency the company says Operators can also enjoy the machines updated cab which includes a refined monitor that employs a turn and tap rotary control for quick access to a variety of performance and convenience functions The 870 LC offers the Powerwise III engine management system with multiple productivity modes www deere com pitandquarry com October 2016 PIT QUARRY 9
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