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Giant Machines Help Advance Mining Technology

Published Thursday, January 01, 1998

As reported in this column last April, Caterpillar announced plans to build a mechanical-drive haul truck sized to match the capacity of existing and anticipated large mining shovels. The company recently released more details on the yet-to-be-built 360-ton-capacity vehicle. That announcement, although unrelated, follows the commissioning of O&K's first 55-cu-yd RH400 hydraulic shovel, designed to load 240-ton and larger haul trucks. The new Cat 797 will be a two-axle, mechanical-drive haul truck rated at 360 tons payload capacity. The power system will have a gross rating of 3,400 hp. A seven-speed electronically controlled transmission will move the 1.2 ...

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