Strong machinery for large fillings

In 2013 Liebherr presented the shovel version of its 350-tonne mining excavator R 9400. Equipped with a 22 m3 bucket in its standard version the R 9400 is the ideal machine to load a 130-150 t payload dump truck fleet. The approved productivity of the machine is known for in backhoe configuration is also expected in face shove configuration. Currently, more than thirty R 9400 Hydraulic Mining Excavator are on duty in four different countries. A recently commissioned R 9400 operating in a Ghanaian gold mine is the first unit in shovel configuration.

The R 9400 follows the Liebherr design philosophy of maximizing the machines performance by improving the efficiency of all individual subsystems. Engineered for optimum serviceability the machine is designed to ensure maximum uptime. In addition, the production-tailored attachment kinematics combined with a mining-optimized bucket shape ensures the highest crowd and breakout forces. Even under tough conditions the R 9400’s high digging forces allows easy bucket penetration and high bucket fill factors to achieve high productivity

The R 9400 is powered by a Cummins QSK50 diesel engine that meets the U.S./EPA Tier 2 emission standard and provides a power of 1250 kW (1675 hp). The electric-motor drive also available is an economically viable alternative in a number of application areas, for instance machines intended for work in arctic regions.

The R 9400 has a wide, spacious cab that provides the operator with the comfortable working conditions needed for maximum productivity. Mounted on vibration dampers, it also reduces the noise level and creates a quiet environment promoting the driver’s own performance. In addition the cab provides maximum protection for the operator. The robust steelwork of low-stress design and the safety-glass windows comply with the FOPS standard and protect the operator against falling material. For maximum safety there are several easily reached emergency stop buttons at ground level, in the cab and in the pump and engine compartments.

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


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