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 recent introduction of the 660B Series,
continues to keep pace technically with the most advanced of the company’s products.
The design of the new K Series models (621K, 623K, 627K), says John Gerhold, wheel tractor-scraper application specialist, is aimed at production efficiency and operator amenities,
qualities that Construction Equipment recently asked a pair of seasoned professional operators to evaluate.
