Hyundai's New Amphibious Excavator
Hyundai recently unveiled its R220LC-9A mid-size excavator equipped with an amphibious undercarriage, built to tackle dredging and other wetland construction projects.
The excavator features hydraulic extendable pontoons constructed with premium grade steel and designed for floatation. It features a proprietary design that uses multi-synchronous hydraulic motors on each pontoon. Estimated water level for the standard machine's operation is about five feet. Optional supplementary pontoons can be added on each side to boost stability in deeper water - to a maximum of 14.1 feet. Optional spuds can be attached to supplementary pontoons to help overcome buoyant force and offer added stability and enhanced operation. Each pontoon comes with three strands of track chains. The arm on this 22-ton class excavator is 20-feet, 8-inches long and has a maximum dig depth of nearly 35 feet.
Improved hydraulic valves, precision-designed variable volume piston pumps, fine-touch pilot controls and enhanced travel functions make for smooth operation. Other innovations include a new auto boom and swing priority system for optimum speed, a new auto power boost feature for additional power when needed and an improved arm-in and boom-down flow regeneration system for added speed and efficiency. This model has improved cab structure strength with stronger but slimmer tubing for safety and visibility. Low stress, high strength steel is integrally welded to form a stronger, durable upper and lower frame. Hyundai has integrated the seat with the console to reduce operator fatigue, and adjustable air-suspension comes standard. A 7-inch, color touch-screen LCD display has easy-to-read digital gauges for monitoring temperature, fuel levels and other maintenance items.
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