Coal Age

NOV 2018

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Page 44 of 51

November 2018 43 product news Caterpillar Announces 2 New Ultra-class Trucks With the introduction of the new Cat 798 AC and the 796 AC, Caterpillar expands its mining truck line to give customers the flexibility to choose what meets their needs and preferences. The new elec- tric-drive 798 AC features a 372-metric-ton (410-ton) payload and joins the mechani- cal-drive Cat 797F in the 400-short-ton size class. The new electric-drive 796 AC delivers 326-mt (360-ton) payload and will replace the Cat 795 AC in regions where engine emissions are highly regulated. Both trucks will be available in the second quarter of 2019. The design of the new trucks focuses on delivering class-leading payload, high reliability and simple serviceability. These attributes are built on the frame and chas- sis design proven in 18 million hours of legacy truck operation and now used by the Cat 794 AC. The AC powertrain of each of the two new trucks draws from the Cat 795 AC and Cat 794 AC, which have been operating successfully for about 5 million hours. Cat AC electric drive is developed and manu- factured by Caterpillar, the single source for the entire powertrain. The Cat C175-16 diesel engine powers both of the new trucks. With more than 21 million hours of operation in mobile equipment and power generation, the reli- able engine can be configured to meet U.S. Environmental Protection Agency (EPA) Tier 4 emissions regulations and offers a choice of 2,610 kW (3,500 hp) or 2,312 kW (3,100 hp). To further adapt to the mine, simple software changes can adjust sys- tem power to help meet production tar- gets or to work smoothly in mixed fleets. The 796 AC and 798 AC are built for efficient production. Both truck models are designed to minimize empty machine weight, as configured in the field, the com- pany said. The design enables the 798 AC to carry its class-leading payload of 372 mt (410 tons) and to haul more material each cycle on 59/80R63 tires. The new trucks feature four-corner, oil-cooled disc brakes as well as dynamic braking for stable handling and fast stop- ping. Superior retarding capability, blend- ed braking and the Cat Traction Control System help boost productivity while en- hancing safety. The Cat AC drive is a high-voltage sys- tem (2,600 volts). When combined with full integration of the power train, the re- sult is lower heat generation, smaller and lighter components, and longer compo- nent life, Cat said. The Cat High Efficiency (HE) Body is sized and configured to meet the specific needs of the mine, dictated by fragmenta- tion, abrasion, cohesion and the loading tool. The curved floor, front, and canopy strengthen the entire body, which is integral to the truck. The body is sized to meet the payload requirements without compromis- ing vehicle balance, braking or control. Open engine access and service plat- forms ease maintenance tasks. The modular design allows for easy removal and installa- tion of components. The engine, traction alternator, motors, inverter, grid and final drives can be removed independently. Trac- tion alternator and optional inverter plat- forms allow for easier inspections, diagnos- tics and component swaps. The result is less service time and greater uptime, Cat said. Safety Perimeter for Shovels The Danger Light from Phoenix is a heavy-duty LED fixture that projects a dis- tinct red beam around the shovel perim-

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