Caterpillar demonstrates its continued commitment to the wheel tractor-scraper market with the introduction of the new 620 K Series models, the 621K, 623K, and 627K. The units refine the design of ...

The launch of the Cat 631K and 637K wheel tractor-scrapers changes that ... Payload Estimator and Cat Grade Control. Payload capacity of the open-bowl 631K and open-bowl twin-engine 637K is ...