Liebherr R 9400 Mining Excavator Loads a Fleet

Thu October 25, 2012 - National Edition
Construction Equipment Guide

Available in two configurations, either diesel or electric, the R 9400 offers the flexibility to perform in any application.
Available in two configurations, either diesel or electric, the R 9400 offers the flexibility to perform in any application.

Liebherr has introduced the shovel version of the 778,200 lbs. (353,000 kg) mining excavator. Boasting a 28.8 cu. yd. (22 cu m) bucket capacity in standard configuration, the R 9400 is the ideal machine to load a fleet of 150 ton dump trucks, according to the manufacturer.

Available in two configurations, either diesel or electric, the R 9400 offers the flexibility to perform in any application.

The production-tailored attachment kinematics combined with a mining-optimized bucket shape ensure the highest crowd and breakout forces. Even under tough conditions the R 9400’s high digging force allows easy bucket penetration and high bucket fill factors to achieve high productivity.

Optimizing electrical, mechanical and hydraulic power distribution, the Litronic plus system allows for easy control even when simultaneous movements are required. Every attachment cylinder is fitted with the Liebherr electronic damping system, which provides controlled end-cushioning for fast and smooth machine’s motions. Intelligent and power-oriented energy management diverts the pump flow during boom lowering, allowing other cylinder motions to operate unimpeded.

Engineered for optimum serviceability the machine is designed to ensure maximum uptime. The large and spacious cab creates a comfortable working environment to ensure peak operator performance. Mounted on silent blocks, the cab design reduces vibrations and limits noise pollution to provide a quiet environment promoting operator working efficiency.

All machine accesses have been optimized. The R 9400’s upperstructure is accessible via a powered 45 degree stairway fitted with handrails and the service drop down flap provides easy access to the main servicing features. Fuel, engine and hydraulic oil, grease, windshield wash water can be refilled and drained from ground level.

Designed for hard application, the R 9400’s heavy duty 3-piece fatigue-resistant undercarriage provides efficient superstructure weight distribution and reduces ground bearing pressure enabling the necessary stability and reliability, according to the manufacturer.

Emergency stops are strategically located at ground level, in the cab, in hydraulic and engine compartments. In addition to its ergonomic design, the R 9400’s cab provides maximum protection for the operator. The structure is composed by strong, low stress tubing and safety glass and the falling object protection system (FOPS) protects the operator from objects falling onto the cab.

The R 9400 is powered by the Cummins QSK50 diesel engine which complies with the USA/EPA Tier II emissions limits and develops an output of 1,675 hp (1,250 kW). The electric drive version is an efficient alternative for machine working in cold climate conditions. The power system makes the R 9400 cost effective without compromising productivity while reducing the machines impact on the environment, according to the manufacturer.

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