Scrapers, Self Propelled

The 657 Caterpillar scraper is a combination tractor-scraper utilizing a 585-horsepower Cat C18 diesel in the tractor and a 447-horsepower C15 in the scraper. The transmission...

The 630K Series wheel tractor-scrapers—631K and 637K—replace the previous 630G Series and feature a complete design update, including high-pressure steering, engine-over-speed...

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...

The new Cat 621H, 623H and 627H wheel tractor-scrapers feature a more powerful engine in the tractor, and a more powerful engine in the scraper of the 627H. The Cat C13 engine...

Replacing the 657E, Caterpillar's 657G open-bowl scraper features Cat's C18 ACERT engine for the tractor and the C15 ACERT engine for the scraper. The largest of eight...

Caterpillar's latest and largest G Series scraper — the 657G — features Tier III-compliant ACERT engines.

Four wheel-tractor scrapers—the 621G, 627G, 631G and 637G—feature new operator stations, a redesigned scraper bowl with 10 percent more capacity, and the latest electronic...