The new Cat 620 K Series Wheel Tractor-Scrapers—621K, 623K, and 627K—refine the design of their H Series predecessors, which introduced features such as Sequence Assist and Load Assist that automate ...

Caterpillar demonstrates its continued commitment to the wheel tractor-scraper market with the introduction of the new 620 K Series models, the 621K, 623K, and 627K. The units refine the design of ...

The self-propelled scraper—or in Caterpillar parlance, the “wheel tractor-scraper”—continues to be not only a viable machine in Caterpillar’s range of bulk-earthmoving equipment, but also, with the ...

No tractor is less mollycoddled than the one hooked to a muckscraper. Slathered in slurry from dawn ‘til dusk and shunting back and forth with monotonous regularity, these machines have a notoriously ...

Caterpillar Inc. employees marked a major milestone, commemorating the production of 75,000 wheel tractor-scrapers at the Decatur, Ill., facility. The historic machine, an open-bowl, twin-engine 627K, ...