Caterpillar launches new truck at MINExpo
Caterpillar’s newest large mining truck, the 794 AC, has made its mining debut at MINExpo 2016. The 291-tonne capacity truck uses a combination of proven designs—a chassis design that has accumulated about 18 million operating hours and power train design that has racked up three million hours. The truck design focuses on productivity while delivering reliability and simple serviceability. Following extensive field testing, controlled rollout of the new truck started last year. To date, the 794 AC is operating in four countries—working in applications ranging from deep pit copper in western USA to coal and copper in South America. Mechanical availability of the 794 AC has averaged 90 per cent or better from the introduction and has continued to improve with every new site introduction. The drive system is designed to power the larger Cat 795F AC, which has demonstrated drive train component life of more than 30,000 hours. Due to the efficient, fully integrated Cat power train and machine configuration, the 794 AC has proven to be faster on grade than the competition. The new truck also features four-corner wet disc brakes as well as dynamic braking for stable handling and fast stopping, as well as 4086 kW of continuous retarding. The 794 AC is designed and built to minimise total costs, and accommodates additional weight allowances for options and body liners—so the truck can be fitted for superior durability without negative effects on production. The 794 AC uses the Cat C175-16 engine and Cat AC power train. System power is adaptable to accommodate changes in production targets and to work seamlessly in mixed fleets where truck speed differences can reduce productivity. Three power options 2050, 2312 and 2610 kW are available using the same engine. The Cat High Efficiency (HE) Body is sized and configured to meet the specific needs of the mine, dictated by fragmentation, abrasion, cohesion and the loading tool. The 794 AC body is integral to the truck and is sized to meet the payload requirements without compromising vehicle balance, braking or control
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