Used Caterpillar 637D Scrapers For Sale

The Caterpillar 637D is a twin-engine wheel tractor-scraper used for high-volume earthmoving, haul, and site preparation work. As part of Caterpillar's scraper lineup, the 637D is designed to load, carry, and spread material efficiently over medium to long distances. It typically features a bowl, apron, ejector, and rear push-pull capability depending on configuration. The machine is used in road construction, mining support, land development, and large-scale grading projects. The 637D is known for its heavy-duty frame, large-capacity bowl, and serviceability. It remains a recognized model in the Caterpillar scraper category for production earthmoving applications.