- Start
- Sep 29, 199890% CONFIDENCEfrom the source
Caterpillar Unveils the 797 Mining Truck
- Caterpillar unveiled the first 797 haul truck on 29 September 1998 in Decatur, Illinois, after development began in 1997 for a 360 short ton truck[3]
- The third and fourth units entered service at Bingham Canyon Mine, Utah, in the second quarter of 1999; it was marketed in North America in 2000 and worldwide in 2001[3]
Notable features
- An off-highway, ultra-class, two-axle haul truck for mining, using a mechanical drive where competitors’ similar trucks use diesel-electric; it was the first Caterpillar truck designed extensively with CAD tools[3]
- It used a Cat 3524B engine (two coupled 12-cylinder 3512B blocks), a mechanical drive and a seven-speed planetary transmission[3]
- The 797’s Cat 3524B HD 24-cylinder engine displaces 106 litres and makes 3,400 hp gross (3,211 hp net), with quad single-stage turbochargers[3]
- Michelin developed the 55/80R63 radial tyre specifically for the first 797; later trucks run 4.028 m tall, 5,300 kg 59/80R63 tyres, six per truck[3]
- Later versions raised payload, the 797B to 345 t and the 797F (2008) to 400 short tons[3]
References 478% CONFIDENCE
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%youtube.com/watch?v=A1TN6eJM8V4youtube.com· Posted Sep 15, 2026· Starts Sep 29, 1998 ✓· 25% of score
Multiple sources (Wikipedia[3], Curbside Classic[4]) state Caterpillar first unveiled a completed 797 at its Decatur, Illinois plant on 29 September 1998.
- [2]65%Caterpillar Manufacturing: Inside the Factories Building Behemoths | FD Engineeringyoutube.com· Added Sep 15, 2026· 25% of score
Covers Caterpillar’s mining-truck manufacturing including the 797B, the same real-world subject as this pin’s 797 unveiling.[1]
- [3]88%Caterpillar 797 - Wikipediaen.wikipedia.org· Added Sep 15, 2026· 25% of score
States Caterpillar unveiled the completed 797 at its Decatur assembly plant on 29 September 1998.[1]
- [4]70%Curbside Classic: The Cat 797 Mining Truckcurbsideclassic.com· Added Sep 15, 2026· 25% of score
Corroborates the 1998 unveiling and 1999 entry into service at Bingham Canyon mine.[1]
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