Caterpillar’s largest mining truck reaches milestone

Cat's 797F mining truck.

Caterpillar has manufactured its 1000th 797 mining truck, 19 years after the first machine was commissioned.

The 797F is Caterpillar’s largest truck with a 363-tonne payload. It is also considered the largest mechanical-drive mining truck in the world.

According to Cat, the 797 is the only mining truck in its size class to reach the 1000 milestone.

The first 797 was commissioned in 1999 and is still in service in a Canadian oil sands operation after 130,000 hours.

“The 797 has proven its ability to deliver high production in the most challenging conditions—from the extreme cold and soft underfoot conditions of the Canadian oil sands to high altitude, deep pit copper applications in South America,” Cat global product manager, large mining trucks, Sudhanshu Singh, said.

“In a broad range of applications, the 797F sets the production standard for ultra-class mining trucks. That’s a big reason why there are double the number of 797s at work today compared to the total number of all competitors’ trucks in the size class.”

The 797F is powered by a 20-cylinder, quad-turbocharged Cat C175 engine, which produces 4000hp (2983kW). For applications that don’t require this level of power, such as the flat hauls found at coal and iron ore operations, Cat offers a 3550hp (2647kW) alternative.

The 797F also features a complete power train designed and manufactured end-to-end by Caterpillar. The 1000th 797F, like all of its predecessors, was assembled at Cat’s manufacturing facility in Illinois, United States.

Cat also assembled its 5000th 793 mining truck, which was first produced by the OEM in 1991, earlier this year.

That vehicle, part of Cat’s fifth generation of the 793, was manufactured for an Australian mining customer. Western Australia’s iron ore mines are home to the highest number of the world’s 793s.

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