Equipment Type

Cat Wheel Tractor Scraper

The new Cat 620 K Series Wheel Tractor-Scrapers—621K, 623K, and 627K—refine the design of their H Series predecessors, which introduced features such as Sequence Assist and Load Assist that automate cycles.

March 03, 2014

The new Cat 620 K Series Wheel Tractor-Scrapers—621K, 623K, and 627K—refine the design of their H Series predecessors, which introduced features such as Sequence Assist and Load Assist that automate cycles. K Series models build on the design of their H Series predecessors with new features, including high pressure steering, engine over-speed protection, tire spin reduction, differential lock engagement protection, machine/ground-speed control, and a payload-estimator system. Payload capacity of the open-bowl 621K and open-bowl, twin-engine 627K is 28.8 tons and 27.6 tons for the elevating 627K.

The new models incorporate a number of additional enhancements: Advanced Cushion Hitch uses new software to dampen end-of-stroke movement of the load cylinder for a smoother ride; hydraulic-system refinement simplifies the bowl quick-drop function; draft arm overflow guards divert material away from bowl sides; Auto-Stall assists in quickly bringing the transmission to operating temperature for faster transitions from torque-converter drive; cab interiors feature a redesigned dash as well as visibility and operator comfort enhancements; maintenance improvements include an easier-to-service filter bank; and the Fuel Economy Mode for the 627K adjusts shift points and power distribution for optimum fuel economy. 

Read our exclusive Field Test of the 627K here.

other Caterpillar Inc. products

The C13B 12.5L engine is designed to meet Tier 4-F emission standards.

The C13B 12.5L engine is designed to meet Tier 4-F emission standards.

The C9.3B 6-cylinder 9.3L engine combines a high-pressure common-rail fuel system and simplified air, electrical, and aftertreatment systems to produce up to 455 horsepower and 1,540 lb.-ft. of torque out of a package that is nearly 309 pounds lighter than its predecessor.

The C9.3B 6-cylinder 9.3L engine combines a high-pressure common-rail fuel system and simplified air, electrical, and aftertreatment systems to produce up to 455 horsepower and 1,540 lb.-ft. of torque out of a package that is nearly 309 pounds lighter than its predecessor.

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