Open Bowl Scrapers

Cat® Open Bowl Scrapers

Cat® open bowl wheel-tractor scrapers are a high production hauling solution with a broad material appetite. Open bowl scrapers are available as a self-loading, push-loaded or push-pull hauling system.

621K Wheel Tractor-Scraper

Flywheel Power: Tractor/Scraper
304 kW (407 hp)
Scraper Capacity: Heaped
24.0 yd3
Top Speed (Loaded)
33.5 mph

631K Wheel Tractor-Scraper

Scraper Capacity: Heaped
34 yd3
Top Speed (Loaded)
34.7 mph
Width
155 in

637K Wheel Tractor-Scraper

Scraper Capacity: Heaped
34 yd3
Top Speed (Loaded)
34.7 mph
Width
155 in

657 Wheel Tractor-Scraper

Tractor Engine
Cat C18
Scraper Engine
Cat C15
Flywheel Power - Tractor/Scraper
469kW (629 hp) / 353 kW (473 hp)