Coal Bowl Scrapers Home Construction New Equipment Cat Equipment Wheel Tractor-Scrapers Coal Bowl Scrapers Enable Javascript in your browser to allow sorting products 637K Wheel Tractor – Coal Bowl Scraper Flywheel Power 425 kW (570 hp)/216 kW (290 hp) Scraper Capacity 50 yd³ Top Speed 34.7 mile/h View Full Specs 657 Wheel Tractor-Scraper Tractor Engine Cat C18 Scraper Engine Cat C15 Flywheel Power 469kW (629 hp) / 353 kW (473 hp) View Full Specs 657G Wheel Tractor-Scraper Top Speed 33.0 mph Wheelbase 36.08 ft Flywheel Power 447 kw (600 hp) / 337 kW (451 hp) View Full Specs