Pit & Quarry, February 2013
Fills haul truck in only two passes Volvo Construction Equipments L250G wheel leader falls into the 39 ton weight category According to the company its 90 cu yd rehandling bucket fills a truck in only two passes A new engine and driveline system were developed to improve productivity and lower emissions as well as offer greater smoothness serviceability and operator comfort The L250G features a Z bar loader linkage that allows for high breakout force for digging in hard materials Volvo says the wheel loaders heavy duty linkage lift arms and cylinders offer high lift capacity and rapid hydraulic reaction In addition the L250G is fitted with an Interim Tier 4 certified engine that is married to drivetrain hydraulics and lifting systems Load sensing hydraulics deliver power to hydraulic functions only when needed and without unnecessary oil pumping www volvoce com Cat says loader offers 25 percent increase in fuel efficiency Caterpillars 966K XE wheel loader delivers up to a 25 percent fuel efficiency improvement the company says The 966K XE utilizes an integrated continuously variable transmission system A hydraulic pump and motor allow for a smooth and continuous gear ratio change between engine speed and machine speed According to Cat the variator provides this ratio flexibility while reducing the heat load generated by the drivetrain when the machine is digging pushing and climbing under heavy load Power is transmitted through the variator unit as well as a parallel mechanical gear path Power through the variator and mechanical paths are combined through a series of planetary gear sets to maximize the transmission efficiency over a range of operating conditions The units engine can deliver 290 hp www cat com New axle differential configurations help increase traction The John Deere 844K II wheel loader is equipped with new axles that boast standard temperature monitoring and automatic cooling and filtration Four new axle differential configurations help increase traction with on the fly differential locks According to John Deere the 844K II also features improved stability for enhanced productivity The 844K II is equipped with a Tier 3 emission certified John Deere diesel engine that produces 380 hp The unit features the Quad Cool system that provides wide open access to both sides of the coolers for easy cleanout and an LCD screen with onboard diagnostics www deere com 46 PIT QUARRY February 2013 www pitandquarry com
You must have JavaScript enabled to view digital editions.
