1/24/2024 0 Comments Cadtools 12 serial number797 engine Ī gross 3,400 hp (2,535 kW) Cat 3524B HD EUI 24- cylinder, electronic unit injection, quad single-stage turbocharged, liquid aftercooled, four-stroke diesel engine powers the 797. During initial development in 1997, a diesel-electric powertrain was considered for the 797, but this powertrain configuration was not developed because Caterpillar considered a mechanical drive powertrain more appropriate for market conditions at that time. The Caterpillar 797 series trucks employ mechanical drive powertrains in contrast to the diesel-electric powertrains of similar haul trucks offered by competitors. Ĭaterpillar replaced the gross 3,550 hp (2,647 kW) Cat 3524B EUI 24- cylinder diesel engine used in the 797B with the gross 4,000 hp (2,983 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. The 797F's increased payload capacity of 400 short tons (363 t) is a 20 short tons (18.1 t) increase over the 797B. These changes allowed Caterpillar to meet mine operator's needs to increase operational efficiency and reduce costs by increasing the amount of material hauled per trip. 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).Ĭompared to the 797B, the 797F has a higher payload capacity and a more powerful, more efficient engine. The 797F replaced its predecessor model, the 797B, when the 797F entered full production in late 2009. 797F (2009–present) Ĭaterpillar introduced the 797F to the public at MINExpo International in September, 2008. The first 797B units entered service with customers in October 2002. Caterpillar increased the power output of the Cat 3524B EUI 24- cylinder diesel engine used in the 797 from net 2,394 kW (3,211 hp) to net 2,513 kW (3,370 hp) enabling the 797B to achieve a 68 km/h (42 mph) top speed when transporting a 345 t (380 short tons) load, a 3.2 km/h (2 mph) increase over the first generation 797. The 797B's increased payload capacity of 345 t (380 short tons) is a 18.1 t (20 short tons) increase over the first generation 797. 797B (2002–2009) Ĭaterpillar introduced the 797B in spring of 2002, replacing the first-generation 797. The first generation serial number prefix is 5YW. Caterpillar put 18 additional 797s into service with mine operators worldwide as production development units.Ĭaterpillar began marketing the 797 in North America in 2000, with full worldwide marketing following in 2001. In the second quarter of 1999, the third and fourth 797s produced were the first to be placed in service with a customer at the Bingham Canyon Mine in Utah. The first two 797s produced were transported to Caterpillar's Arizona proving grounds for testing. 797 (1998–2002) Ĭaterpillar first unveiled a completed 797 on September 29, 1998, at its assembly plant in Decatur, Illinois. This was the first time CAD tools had been used extensively to design a Caterpillar truck. Engineers at Caterpillar's Mining & Construction Equipment Division in Decatur, Illinois, created a new design for the 797 using computer-aided design technology. In 1997, Caterpillar decided to begin the development of a 360 short tons (327 t) payload capacity haul truck to meet the demand from large-scale mine operators wanting to reduce operating costs at mines using 80 to 90 short tons (73 to 82 t) per pass shovels. The current, third-generation model, the 797F, offers one of the largest haul truck payload capacities in the world, up to 400 short tons (363 t) and has the highest payload capacity among mechanical drive haul trucks. In production since 1998, the 797 series represents Caterpillar’s largest, highest capacity haul trucks. specifically for high-production mining and heavy construction applications worldwide. The Caterpillar 797 is a series of off-highway, ultra class, two- axle, mechanical powertrain haul trucks developed and manufactured in the United States by Caterpillar Inc.
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