New Cat 657 Wheel Tractor-Scraper for low-cost earthmoving

New 657 Wheel Tractor-Scraper Credit: Caterpillar

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 earthmoving.

With a 7% increase in fuel efficiency over the 657G WTS, the new unit is able to move more material per unit of fuel, and includes improved onboard payload estimating accuracy to optimize productivity. The largest open bowl scraper in the Caterpillar line, with a rated load of 46.4 tonnes, now has a more spacious cab for high volume earthmoving, highway construction and mining applications.

“This new 657 is the next generation of ultra-class material moving systems,” John Gerhold, wheel tractor-scraper application specialist for Caterpillar, said in a release. “It delivers improved productivity, safety and technology, which our customers can use to strengthen their business today—and it is equipped to grow with them to meet tomorrow’s requirements.”

The 657 features on-the-go weighing through Payload Estimator, allowing the new WTS to achieve 95% load accuracy, so operators more easily reach target load goals. When working in colder climates, the unique Auto-Stall feature quickly brings the transmission to operating temperature at start-up, so the 657 gets to work faster. Ground Speed Control lowers fuel consumption by allowing the operator to set the desired top speed, allowing the machine to find the gear that works best for the engine and transmission.

The two-engine design includes the Cat C18 powering the tractor and Cat C15 in the scraper, both meeting U.S. EPA Tier 4 Final/EU Stage V emissions standards. Its Advanced Productivity Electronic Control System (APECS) allows the machine to better utilize engine power and torque, resulting in more material moved throughout the shift. The transmission features Electronic Clutch Pressure Control, which improves shift quality and fuel efficiency. New hydraulic disc brakes improve braking performance and reduce maintenance.

Comfortable operation

A 21% larger cab interior than the preceding model, the 657G, improves comfort and provides excellent visibility to the bail, cutting edge and bowl of the new 657. The air suspension comfort seat adjusts and rotates 30-degrees to reduce fatigue, while the new Advance Ride Management adjusts damping to match ground conditions, resulting in a smoother ride. Automatic HVAC temperature control and defroster come standard. The new power access ladder enhances operator safety when entering and exiting the cab.

The new high-pressure steering system requires less steering input, which bolsters operator efficiency and productivity. Automatically engaging when the machine is in eighth gear, engine overspeed protection assists in slowing machine speed when approaching engine limits. Sequence Assist, a new option on the 657, automates many operator inputs each cycle to simplify machine operation.

Increased efficiency

The 657 tractor includes a new hydraulic on-demand fan that increases engine fuel efficiency. The machine also has draft-arm overflow guards, which prevent material accumulation between the draft arms and bowl sides. Ground-level access for fuel fill and all daily maintenance points increases service efficiency and safety to increase machine uptime.

Integrated Payload Estimator and Cat Product Link technologies provide real-time payload, machine location, fuel usage and idle time information as well as diagnostic fault codes—all to significantly increase fleet management efficiency. A collective view of critical machine operating data is accessed via VisionLink from anywhere there is an internet connection. links managers directly to their VisionLink account and offers access to maintenance schedules, parts and service records, and warranty information.

For more information about the Cat 657, visit

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