Caterpillar 797F
| Caterpillar 797F | |
|---|---|
| Overview | |
| Manufacturer | Caterpillar Inc. |
| Production | Late 2009 - Present |
| Assembly | North America |
| Body and chassis | |
| Class | Ultra |
| Body style | 2-door Dump |
| Layout | Front-engine, rear-wheel-drive layout |
| Powertrain | |
| Engine | Caterpillar 6,469 cu in (106 L) C175-20 ACERT V-20 (t/c diesel) |
| Transmission | 7-speed planetary gearset mechanical |
| Dimensions | |
| Wheelbase | 23 ft 7 in (719 cm) |
| Length | 49 ft 6 in (1,509 cm) |
| Width | 31 ft 3 in (952 cm) - overall tire width (fully loaded) |
| Height | 25 ft 4 in (772 cm) - front canopy height (empty) |
| Curb weight | 1,375,000 lb (623,690 kg) |
| Chronology | |
| Predecessor | 797B |
The Caterpillar 797F is an off-highway, ultra class, two-axle, mechanical powertrain haul truck developed and manufactured by Caterpillar Inc. in the United States specifically for high production mining and heavy-duty construction applications worldwide. The 797F is the third, current generation model of the 797 series and is Caterpillar's largest, highest payload capacity haul truck.
Caterpillar introduced the 797F to the public at MINExpo International in September, 2008. The 797F replaced its predecessor model, the 797B, when the 797F entered full production in late 2009. Prior to the introduction of the Caterpillar 797F and the Bucyrus MT6300AC at MINExpo International in September, 2008, the Liebherr T 282B, introduced in 2004, was the only haul truck with a payload capacity of 400 short tons (363 t).
Compared to the 797B, the 797F has a higher payload capacity and a more powerful, more efficient engine. These changes allowed Caterpillar to meet mine operators' needs to increase operational efficiency and reduce costs by increasing the amount of material hauled per trip.
The 797F's increased payload capacity of 400 short tons (363 t) is a 20 short tons (18.1 t) increase over the 797B.
Caterpillar replaced the gross 3,550 hp (2,647 kW) [net 3,370 hp (2,513 kW)] Cat 3524B EUI 24-cylinder diesel engine used in the 797B with the gross 4,000 hp (2,983 kW) [net 3,793 hp (2,828 kW)] Cat C175-20 ACERT 20-cylinder diesel engine, enabling the 797F to maintain the 42 mph (68 km/h) top speed of the 797B while transporting a heavier 400 short tons (363 t) payload.
A gross 4,000 hp (2,983 kW) [net 3,793 hp (2,828 kW)] Cat C175-20 ACERT single block, 20-cylinder, electronic common rail injection, quad turbocharged, air-to-air intercooled, four-stroke diesel engine powers the 797F. The power rating of the C175-20 is valid up to an elevation of 7,000 ft (2,134 m) or up to 16,000 ft (4,877 m) with a high altitude arrangement.
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