631K (Tier 4 Final/Stage IV)

631K (Tier 4 Final/Stage IV) Wheel Tractor-Scraper

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621K

621K Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

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637K (TIER 4 FINAL/STAGE IV)

637K (TIER 4 FINAL/STAGE IV)  

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657G

657G Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing the Cat 657E Coal Scraper to consistently deliver high productivity at the lowest cost per ton.

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637G

637G Coal reserve management Only Caterpillar offers Wheel Tractor-Scrapers designed exclusively for your coal stockpiling and retrieval needs. The Cat® 637G Coal Bowl Scraper can construct and maintain your coal stockpiles, as well as haul loads to your inlet supply system to meet the burn requirements of the plant.

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