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

The H Series wheel tractor-scrapers include the 621H single-engine, open bowl machine, the 623H with elevating scraper and a single engine and the open-bowl 627H with twin engines and all-wheel drive.

Complete design update includes high-pressure steering, engine-over-speed protection, tire-spin reduction, differential lock-engagement protection, machine/ground speed control and more "Ten years ago ...

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 ...

Caterpillar has introduced the new Cat 657 Wheel Tractor-Scraper (WTS), which features a twin-power design to boost cycle times and elevate productivity and operating efficiency to deliver low-cost ...

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MOLINE, Ill. (Nov 30, 2007) – John Deere introduces a new line of large, high-horsepower tractors – the 9030 Series Scraper Tractors. These three models of tractors, ranging from 425 to 530 hp, are ...

The Miami Trailer-Scraper Co. offered scrapers that were rear dumping. Hoisting was performed either through the drive wheels or, with a special attachment for the tractor, by means of powered winch.

These tractors aren’t necessarily basic, though, with four-wheel drive, cabs and air conditioning often on the options list. Stepping up the budget brings in candidates from the Japanese makers, such ...