Pit & Quarry, August 2013
Excavating Dredging Gives 24 7 access to machine health John Deeres 670G LC excavator is equipped with a Tier 4 Interim engine that boasts 463 hp The excavator has a lifting capacity of 32900 lbs and the 67 metric ton machine comes equipped with the companys exclusive Powerwise III engine management system Responding to customer needs John Deere says the 670G LC features more hydraulic flow for faster work cycles and greater productivity and a comfortable and spacious cab for improved operator comfort In addition the 670G LC comes standard with JDLink Ultimate giving contractors around the clock access online to machine health utilization and fuel consumption www deere com Excavator lineup offers greater digging forces faster cycle times Volvo Construction Equipments D Series excavators which include the EC140D EC160D and EC220D range in weight from 14 to 28 tons According to Volvo the excavators offer excellent lifting capacity and stability allowing heavier objects to be lifted The EC140D and EC160D are fitted with the latest Volvo D4 engine while the EC220D features the Volvo D6 Tier 4 Interim engine Featuring greased and sealed track chains as standard each track is powered by an automatic two speed shift travel motor maximizing tractive force The track brakes are multi disc and travel motor brake and planetary gears are all well protected within the track frame the company says Also the hydraulics system is designed for high productivity high digging capacity and easy maneuverability www volvoce com Reduces fuel consumption by as much as 25 percent Caterpillars 336E H hydraulic excavator centers on a fuelsaving hydraulically based energy recovery system that captures and reuses energy which conventional excavators release in the form of heat Reduced fuel consumption is the net result as much as 25 percent less according to Cat Fuel conservation begins with the 336E H Electronic Standardized Programmable hydraulic pump which integrates the machine power sources and matches engine performance to the load encountered Additional fuel saving features include three power modes on demand power and an engine idle shutdown system Cats Adaptive Control System uses a main control valve that optimizes hydraulic performance by intelligently managing restrictions and flows controlling machine motion and ensuring that hydraulic power is available precisely where and when its needed The system also captures kinetic energy from the swing deceleration phase storing it for reuse www cat com 24 PIT QUARRY August 2013 www pitandquarry com
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