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Open Bowl Scrapers

Cat Wheel Tractor-Scrapers have the power, traction, and speed for reliable output in a variety of applications. Scraper options include single- and tandem-engine open bowls, tandem engine push-pulls, elevators, and auger arrangements.

657G Scrapers

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Caterpillar® Wheel Tractor-Scrapers to consistently deliver high productivity.

  • Specification Summary

  • Flywheel Power: Tractor/Scraper 447 kW (600 hp) / 337 kW (451 hp)
  • Net Power 421/447 kW 564/600 hp
  • Gross Power - Gears 1-2 445.0 kW
  • Gross Power - Gears 3-8 471.0 kW
  • Product Brochure


Product Details

Tractor Engine

Flywheel Power: Tractor/Scraper 447 kW (600 hp) / 337 kW (451 hp)
Net Power 421/447 kW 564/600 hp
Gross Power - Gears 1-2 445.0 kW
Gross Power - Gears 3-8 471.0 kW
Net Power - Gears 1-2 421.0 kW
Net Power - Gears 3-8 447.0 kW
Bore 145.0 mm
Stroke 183.0 mm
Displacement 18.1 L

Scraper Bowl

Scraper Capacity: Heaped 33.6 m3
Rated Load 47200.0 kg
Capacity Struck 24.5 m3
Depth of Cut - max. 425.0 mm
Width of Cut, to Router Bits 3846.0 mm
Ground Clearance - max. 545.0 mm
Cutting Edge - thickness 22.0 mm
Hyd. Penetration Force - 657G 542.0 kN
Depth of Spread - max. 680.0 mm
Apron Opening 2340.0 mm
Apron Closure Force 176.0 kN


Top Speed (Loaded) 55.7 km/h
1 Forward 5.5 km/h
2 Forward 10.0 km/h
3 Forward 10.9 km/h
4 Forward 14.8 km/h
5 Forward 19.8 km/h
6 Forward 26.9 km/h
7 Forward 36.0 km/h
8 Forward 55.7 km/h
Reverse 9.7 km/h


Tractor Engine C18 ACERT
Scraper Engine Cat C15 ACERT

Scraper Engine

Net Power 306/337 kW 410/451 hp
Gross Power - Gears 1-2 326.0 kW
Gross Power - Gears 3-8 356.0 kW
Net Power - Gears 1-2 306.0 kW
Net Power - Gears 3-8 337.0 kW
Bore 137.0 mm
Stroke 171.5 mm
Displacement 15.2 L

Weights - Standard, tandem

Total Shipping 66615.0 kg
Tractor Shipping 39969.0 kg
Scraper Shipping 26646.0 kg
Total Operating - empty 67774.0 kg
Front Axle 40665.0 kg
Rear Axle 27110.0 kg
Total Operating - loaded 114949.0 kg
Front Axle Weight - loaded 58624.0 kg
Rear Axle Weight - loaded 56325.0 kg

Weights - Push-Pull

Total Shipping 70395.0 kg
Tractor Shipping 42023.0 kg
Scraper Shipping 28372.0 kg
Total Operating - empty 71554.0 kg
Front Axle 42715.0 kg
Rear Axle 28839.0 kg
Total Operating - loaded 118729.0 kg
Front Axle - loaded 60552.0 kg
Rear Axle (Loaded) 58177.0 kg


Width – Overall Machine 4344.0 mm
Width – Tractor 3601.0 mm
Width - rear tire center lines 2633.0 mm
Width – Inside of Bowl 3683.0 mm
Width - outside bowl (shipping width) 3914.0 mm
Height – Overall Shipping 4710.0 mm
Height – Top of Cab 3712.0 mm
Ground Clearance – Tractor 645.0 mm
Front of Tractor to Front Axle 3770.0 mm
Axle to Vertical Hitch Pin 608.0 mm
Height – Scraper Blade Maximum 680.0 mm
Wheelbase 9956.0 mm
Length - overall machine 16164.0 mm
Rear Axle to Rear of Machine 2438.0 mm
Bail Length - max. (push-pull) 1836.0 mm

Service Refill Capacities – Scraper

Fuel Tank - 657G 1597.0 L
Crankcase 38.0 L
Transmission 121.0 L
Differential 163.0 L
Final Drive (per side) 29.5 L
Wheel Coolant (each) 130.0 L
Cooling System 88.0 L


Width - 180° Turn, right 13.82 m
Width - 180° Turn, left 14.73 m
Steering Angle – Right 90°
Steering Angle – Left 85°


Bowl Cylinder Bore 235.0 mm
Bowl Cylinder Stroke 950.0 mm
Apron Cylinder Bore 235.0 mm
Apron Cylinder Stroke 760.0 mm
Ejector Cylinder Bore 260.0 mm
Ejector Cylinder Stroke 1946.0 mm
Steering Circuit 435.0 L/min
Scraper Circuit 579.0 L/min
Cushion Hitch Circuit 56.0 L/min
Secondary Steering Circuit 430.0 L/min
Relief Valve - Steering Circuit 13500.0 kPa
Relief Valve - Implement Circuit 13800.0 kPa
Compensator Setting - Cushion Hitch Circuit 20670.0 kPa

Service Refill Capacities – Tractor

Crankcase 64.0 L
Transmission 136.0 L
Differential 138.0 L
Final Drive (per side) 23.0 L
Cooling System 125.0 L
Hydraulic Reservoir 303.0 L
Wheel Coolant (each) 130.0 L
Windshield Washer 6.0 L

Power Train – Engine

The C18 and the C15 engines with ACERT™ Technology works at the point of combustion to optimize engine performance. Matched with the torque converter and power shift transmission, it provides years of dependable and efficient service.

Power Train – Transmission

Electronic controls switch from converter drive to direct drive based on gear selection, maximizing efficiency and power application. Tractor and scraper engines are synchronized for smooth operation and longer service life.


Superior structural design delivers stateof- the-art ride, capacity, and material control while assuring the durability and reliability customers expect from Caterpillar.

Operator Station

Convenient control placement and a comfortable work environment are keys to high productivity. Features include electro-hydraulic controls, an available air seat suspension and advanced instrumentation.

Electronic Controls

The electronic controls respond to operator commands and input from on-board sensors to optimize machine performance. In addition, the electronic controls provide advanced diagnostic capabilities that result in better machine availability.

Scraper Bowl

Caterpillar® Scraper bowls are designed for excellent material flow and retention for fast cycle times and high productivity.

Push-Pull Arrangement

For maximum production capability, Caterpillar offers an optional push-pull arrangement for the 657G, which allows two push-pull scrapers to act as a selfloading machine.

Auger Arrangement

Provides self-loading capability with the same wide material appetite as an open bowl machine.


Grouped service points and easy access, the latest electronic monitoring systems and rugged Caterpillar components simplify maintenance and minimize downtime.

Customer Support

Caterpillar dealers have the parts and service capabilities to keep your wheel tractor-scrapers working.
Catepillar Equipments


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