This Hitachi excavator is a jack of all trades

By: Mining And Exploration  09-12-2011
Keywords: excavator

The EX1200-6 120-metric-tonne-class excavator is available in front-shovel and backhoe configurations. This machine is equally at home in quarries, mines and mass-excavation sites; bucket capacities range from 5.9 to 6.5 cubic metres (7.7 to 8.5 cubic yards) for shovels and three to 6.7 cubic metres (3.93 to 8.8 cubic yards) for backhoes. Standard and BE booms are available.

The excavator features a 567-kW (760-hp) Tier 2 Cummins engine.The boom-recirculation system efficiently recirculates oil in the boom circuit, delivering more pressurized oil to the arm from the pump to increase arm-lowering speed in the combined operation of the boom and arm.

Special work-mode switches increase productivity. Boom-priority mode increases the boom-raise speed to reduce cycle time when the swing angle is small in a cycle of digging, swinging and dumping. Swing-priority mode increases swing speed when the swing angle is large. Activating the boom-mode switch reduces lifting and pulling on the body, which reduces vibration and increases the wear life of the machine.

The front-shovel version also features Hitachi’s exclusive auto-level crowd mechanism. This allows easy one-lever crowding of the bucket into the material at a constant level, to keep a cleaner floor and increase bucket fill.

The high-cab kit is standard with the shovel configuration and optional for the backhoe. A sliding ladder is optional for both configurations, providing easy access to the cab and working platform.

An easy-to-read multi-function, multi-language LCD monitor provides valuable readings for the operator. With Hitachi’s e-Service, critical field data can be downloaded to the office for remote field monitoring.

Keywords: excavator

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