631G

Caterpillar Wheel Tractor-Scrapers offer fast cycle times, with quick loading, high travel speeds and the ability to load and dump on the run. Rugged construction and easy maintenance assure long life with low operating costs.


SPECIFICATIONS
Engine
Tractor Engine Cat® C18 ACERT™


Tractor Engine
Flywheel Power - Tractor/Scraper 373 kW (500 hp)
Net Power 345/373 kW 462/500 hp
Gross Power - Gears 1-2 488 HP
Gross Power - Gears 3-8 526 HP
Net Power - Gears 1-2 462 HP
Net Power - Gears 3-8 500 HP
Bore 5.7 in
Stroke 7.2 in
Displacement 1105 in³


Scraper Bowl
Scraper Capacity - Heaped 34 yd³
Rated Load 82200 lb
Capacity - Struck 24 yd³
Depth of Cut - Maximum 17.2 in
Width - Cut - To Router Bits 138.3 in
Ground Clearance - Maximum 21.5 in
Cutting Edge Thickness 1.12 in
Hyd. Penetration Force - 631G 57375 lb
Depth of Spread - Maximum 18.9 in
Apron Opening 79 in
Apron Closure Force 38250 lb


Transmission
Top Speed - Loaded 33 mile/h
1 Forward 2.9 mile/h
2 Forward 5.2 mile/h
3 Forward 7.4 mile/h
4 Forward 10 mile/h
5 Forward 13.4 mile/h
6 Forward 18.2 mile/h
7 Forward 24.5 mile/h
8 Forward 33.2 mile/h
Reverse 6.2 mile/h


Hydraulics
Bowl Cylinder Bore 7.2 in
Bowl Cylinder Stroke 34.4 in
Apron Cylinder Bore 8.2 in
Apron Cylinder Stroke 28.6 in
Ejector Cylinder Bore 8.2 in
Ejector Cylinder Stroke 74 in
Steering Circuit 100 gal/min
Scraper Circuit 91 gal/min
Cushion Hitch Circuit 9 gal/min
Secondary Steering Circuit 100 gal/min
Relief Valve - Steering Circuit 1987 psi
Relief Valve - Implement Circuit 2030 psi
Compensator Settings - Cushion Hitch Circuit 2320 psi


Steering
Width - 180° Turn 40.02 ft
Steering Angle - Right 90°
Steering Angle - Left 85°


Service Refill Capacities - Tractor
Crankcase 11.9 gal (US)
Fuel Tank - 631G 215.04 gal (US)
Transmission 29 gal (US)
Differential 39 gal (US)
Final Drive - Each 6.1 gal (US)
Cooling System 29 gal (US)
Hydraulic Reservoir 50.2 gal (US)
Wheel Coolant - Each 19.8 gal (US)
Windshield Washer 1.5 gal (US)


Service Refill Capacities - Scraper
Wheel Coolant - Each 19.8 gal (US)


Dimensions
Width - Overall Machine 155 in
Width - Tractor 137 in
Width - Rear Tire Center Lines 97 in
Width - Inside of Bowl 134 in
Width - Outside Rear Tires 143.2 in
Height - Overall Shipping 168.8 in
Height - Top of Cab 146.3 in
Ground Clearance - Tractor 26.2 in
Front of Tractor to Front Axle 132.2 in
Axle to Vertical Hitch Pin 21.6 in
Height - Scraper Blade Maximum 21.5 in
Wheel Base 345.2 in
Length - Overall Machine 573.4 in
Rear Axle - Rear of Machine 95.97 in


Weights - Standard, Tandem
Total Shipping 100005.97 lb
Total Operating - Empty 102459.71 lb
Front Axle 68647.46 lb
Rear Axle 33812.26 lb
Total Operating - Loaded 184658.97 lb
Front Axle Weight - Loaded 97869.7 lb
Rear Axle - Weight - Loaded 86789.28 lb


Weights
Operating Weight 102459.71 lb


Transmission - 631G
1 Forward 2.9 mile/h
2 Forward 5.2 mile/h
3 Forward 7.4 mile/h
4 Forward 10 mile/h
5 Forward 13.4 mile/h
6 Forward 18.2 mile/h
7 Forward 24.5 mile/h
8 Forward 33.2 mile/h
Reverse 6.2 mile/h