- Overall Length: 53.03 ft / 16164 mm
- Overall Width: 14.25 ft / 4344 mm
- Overall Height: 15.45 ft / 4710 mm
- Wheelbase: 32.66 ft / 9956 mm
Published dimensions and weight
Caterpillar 657G
The Caterpillar 657G is a 121.9 t-class motor scraper with a 632 hp engine.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale

01Dimensions referenceLength × width × height
02WeightNot publishedNot published
03Selected published values154
Motor scrapers are commonly used to cut, load, haul and spread soil over medium-distance earthmoving cycles. Published rows for Caterpillar 657G include published payload of 104058 lb / 47200 kg, published body capacity of 44 yd3 / 33.6 m3, published engine power of 632 hp / 471 kw. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Overall Length” field (53.03 ft / 16164 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Width” field (14.25 ft / 4344 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Height” field (15.45 ft / 4710 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Dimensions
Overall Length53.03 ft16164 mm
Overall Width14.25 ft4344 mm
Overall Height15.45 ft4710 mm
Wheelbase32.66 ft9956 mm
Tractor Ground Clearance2.12 ft645 mm
Height To Top Of Cab12.18 ft3712 mm
Height - Top Of Cab12.18 in0.31 m
Height - Top Of Scraper15.16 ft4.63 m
Length - Overall56.4 ft17.2 m
Length - Overall Machine636.38 in16164.06 mm
Rear Axle - Rear Of Machine95.98 in2437.9 mm
Tread - Scraper9.24 ft2.82 m
Tread - Tractor8.64 ft2.64 m
Wheel Base36.08 ft11 m
Width - Inside Of Bowl145 in3683 mm
Width - Outside Bowl - Shipping Width154 in3911.6 mm
Width - Overall14.32 ft4.37 m
Width - Overall Machine171 in4343.4 mm
Width - Rear Tire Center Lines110.75 in2813.05 mm
Axle To Vertical Hitch Pin23.94 in608.08 mm
Width - Tractor141.78 in3600.96 mm
Bail Length - Maximum (Push-Pull)72.28 in1835.92 mm
Front Of Tractor To Front Axle148.4 in3769.36 mm
Ground Clearance - Tractor25.39 in644.91 mm
Height - Overall Shipping185.4 in4709.16 mm
Height - Scraper Blade Maximum26.77 in679.96 mm
Tractor Engine
MakeCaterpillarCaterpillar
ModelC18 ACERTC18 ACERT
Gross Power632 hp471 kw
Displacement1105 cu in18.2 L
Flywheel Power - Tractor/Scraper447 kW (600 hp) / 337 kW (451 hp)447 kW (600 hp) / 337 kW (451 hp)
Net Power - Gears 1-2564 hp420.6 kw
Gross Power - Gears 1-2596 hp444.5 kw
Bore5.7 in144.8 mm
Stroke7.2 in182.9 mm
Net Power - Gears 3-8600 hp447.5 kw
Gross Power - Gears 3-8632 hp471.3 kw
Engine
Tractor EngineCat C18 with ACERT TechnologyCat C18 with ACERT Technology
Flywheel Power - Tractor/Scraper447 kw (600 hp) / 337 kW (451 hp)447 kw (600 hp) / 337 kW (451 hp)
Scraper EngineCat C15 with ACERT TechnologyCat C15 with ACERT Technology
Scraper Engine
MakeCaterpillarCaterpillar
ModelC15 ACERTC15 ACERT
Gross Power478 hp356 kw
Displacement928 cu in15.3 L
Bore5.5 in139.7 mm
Stroke6.5 in165.1 mm
Gross Power - Gears 1-2437 hp325.9 kw
Gross Power - Gears 3-8478 hp356.5 kw
Net Power - Gears 1-2410 hp305.8 kw
Net Power - Gears 3-8451 hp336.4 kw
Operational
Fuel Capacity421.9 gal1597 L
Cooling System Fluid Capacity56.3 gal213 L
Engine Oil Fluid Capacity26.9 gal102 L
Transmission Fluid Capacity68 gal257 L
Differential Fluid Capacity79.5 gal301 L
Hydraulic System Fluid Capacity80 gal303 L
Wheel Coolant Fluid Capacity - Each68.6 gal260 L
Operating Voltage24 V24 V
Alternator Supplied Amperage75 amps75 amps
Tire Size40.5/75 R3940.5/75 R39
Transmission
Transmission Type8-speed automatic powershift with electronic control8-speed automatic powershift with electronic control
Number Of Forward Gears88
Number Of Reverse Gears11
Max Speed Forward36 mph55.7 km/h
Max Speed Reverse6 mph9.7 km/h
Reverse6.1 mile/h6.1 mile/h
1 Forward3.5 mph5.7 km/h
2 Forward6.3 mph10.2 km/h
3 Forward7.8 mph12.6 km/h
4 Forward10.6 mph17.1 km/h
5 Forward14.1 mph22.7 km/h
6 Forward19 mph30.6 km/h
7 Forward25.6 mph41.2 km/h
8 Forward34.6 mph55.7 km/h
Top Speed - Loaded33 mph53.2 km/h
Steering
Steering Angle - Right90 degrees90 degrees
Steering Angle - Left85 degrees85 degrees
Width - 180 Degrees Turn - Right44.7 ft13.7 m
Width - 180 Degrees Turn - Left47.6 ft14.5 m
Weights
Total Operating - Empty149417 lb67774 kg
Front Axle - Empty89650 %89650 %
Rear Axle - Empty59767 %59767 %
Total Operating - Loaded253420 lb114949 kg
Front Axel - Loaded129244 lb58624 kg
Rear Axle - Loaded124176 %124176 %
Operating Weight - Loaded - Approximate268817 lb121933.4 kg
Operating Weight - Empty - Approximate158817 lb72038.2 kg
Bowl
Rated Payload104058 lb47200 kg
Heaped Capacity44 yd333.6 m3
Struck Capacity32 yd324.5 m3
Max Depth Of Cut16.7 in425 mm
Width Of Cut12.5 ft3846 mm
Operating Specifications
Top Speed - Loaded33 mph53.2 km/h
Rated Load110000 lb49895.2 kg
Scraper Capacity - Struck59 yd345.2 m3
Scraper Capacity - Heaped73 yd355.9 m3
180 Degrees Curb-To-Curb Turning Width51.3 ft15.7 m
Hydraulics
Bowl Cylinder Bore9.3 in235 mm
Bowl Cylinder Stroke37.4 in950 mm
Steering Circuit99.9 gal/min99.9 gal/min
Scraper Circuit153 gal/min153 gal/min
Cushion Hitch Circuit12.7 gal/min12.7 gal/min
Relief Valve - Steering Circuit1959 psi1959 psi
Relief Valve - Implement Circuit1999 psi1999 psi
Compensator Settings - Cushion Hitch Circuit3002 psi3002 psi
Ejector Cylinder Bore10.3 in260.1 mm
Ejector Cylinder Stroke76.7 in1945.9 mm
Secondary Steering Circuit64.2 gal/min64.2 gal/min
Apron Cylinder Bore9.3 in235 mm
Apron Cylinder Stroke30 in760 mm
Scraper Bowl
Width - Cut - To Router Bits12.7 in322.6 mm
Rated Load104000 lb47173.7 kg
Capacity - Struck32 yd324.5 m3
Depth Of Cut - Maximum17 in431.8 mm
Ground Clearance - Maximum23 in584.2 mm
Cutting Edge Thickness1.8 in45.8 mm
Depth Of Spread - Maximum26 in660.4 mm
Scraper Capacity - Heaped44 yd333.7 m3
Apron Closure Force39200 lb17780.9 kg
Apron Opening92 in2336.8 mm
Hyd. Penetration Force - 657g121000 lb54884.7 kg
Service Refill Capacities - Scraper
Transmission32 gal121.2 L
Differential44 gal166.6 L
Final Drive - Each7.9 gal30 L
Cooling System24 gal90.9 L
Crankcase10 gal37.9 L
Wheel Coolant - Each34.3 gal129.9 L
Fuel Tank - 657g421.9 gal1597.1 L
Service Refill Capacities - Tractor
Transmission36 gal136.3 L
Differential36 gal136.3 L
Final Drive - Each6 gal22.8 L
Cooling System33 gal125 L
Hydraulic Reservoir80 gal302.9 L
Crankcase17 gal64.4 L
Wheel Coolant - Each34.3 gal129.9 L
Windshield Washer0.5 gal1.9 L
Weights - Standard, Tandem
Total Shipping147959 lb67113.1 kg
Tractor Shipping87717 lb39787.8 kg
Scraper Shipping60242 lb27325.4 kg
Total Operating - Empty150761 lb68384.1 kg
Front Axle87924 lb39881.7 kg
Rear Axle62837 lb28502.4 kg
Total Operating - Loaded254761 lb115557.7 kg
Front Axle Weight - Loaded128246 lb58171.5 kg
Rear Axle - Weight - Loaded126515 lb57386.3 kg
Weights - Push-Pull
Total Shipping160505 lb72803.9 kg
Tractor Shipping93635 lb42472.2 kg
Scraper Shipping64068 lb29060.8 kg
Total Operating - Empty160505 lb72803.9 kg
Front Axle93842 lb42566.1 kg
Rear Axle66663 lb30237.9 kg
Total Operating - Loaded264505 lb119977.5 kg
Front Axle - Loaded134165 lb60856.3 kg
Rear Axle - Loaded130340 lb59121.3 kg
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Manufacturer-published specifications.