631G Wheel Tractor-Scraper

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631G Wheel Tractor-Scraper

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.
  • Standard Equipment
  • Specs

Standard Equipment

  • ELECTRICAL
    • Alarm, backup
    • Alternator, 75 amp
    • Batteries (4), 12V Maintenance Free, High Output
    • Electrical System, 24V
    • Lighting System
    • Starting Receptacle
  • OPERATOR ENVIRONMENT
    • Air Conditioner (includes heater and defroster)
    • Cigarette Lighter and Ashtray
    • Coat Hook
    • Diagnostic Connection Port (12V)
    • Dome Courtesy Light
    • Gauge Group
    • Horn
    • Implement Control Joystick
    • Rearview Mirrors
    • Radio Ready (two radio openings, speakers, and 5-amp converter)
    • ROPS Cab with Sound Suppression and Pressurization
    • Static Seatbelt
    • Seat, Air Suspension, Caterpillar Comfort, cloth
    • Steering Wheel - tilt and telescoping
    • Storage Compartment
    • Throttle Lock
    • Transmission Hold
    • Windows - sliding side, swing out
    • Windshield - laminated glass
    • Windshield Wiper/Washer - front and rear
  • POWER TRAIN
    • Engine
    • Braking System
    • Transmission
  • OTHER STANDARD EQUIPMENT
    • Extended Life Coolant, -36° C (-33° F)
    • Fan hub, permanent lube
    • Fast Oil Change
    • Fenders
    • Rims - 35 inch (2)
    • Tires, 37.50-R35 radial
    • Tractor:

Specs

Overview

Long Name:
631G Wheel Tractor Scraper
Name:
631G
Brand:
Caterpillar
Status:
Noncurrent

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 / 364 kW
Gross Power - Gears 3-8:
526 HP / 392 kW
Net Power - Gears 1-2:
462 HP / 345 kW
Net Power - Gears 3-8:
500 HP / 373 kW
Bore:
5.7 in / 145 mm
Stroke:
7.2 in / 183 mm
Displacement:
1105 in³ / 18.1 l

Scraper Bowl

Scraper Capacity - Heaped:
34 yd³ / 26 m³
Rated Load:
82200 lb / 37285 kg
Capacity - Struck:
24 yd³ / 18.3 m³
Depth of Cut - Maximum:
17.2 in / 437 mm
Width - Cut - To Router Bits:
138.3 in / 3512 mm
Ground Clearance - Maximum:
21.5 in / 545 mm
Cutting Edge Thickness:
1.12 in / 28 mm
Hyd. Penetration Force - 631G:
57375 lb / 255 kN
Depth of Spread - Maximum:
18.9 in / 480 mm
Apron Opening:
79 in / 2007 mm
Apron Closure Force:
38250 lb / 170 kN

Transmission

Top Speed - Loaded:
33 mile/h / 53.5 km/h
1 Forward:
2.9 mile/h / 4.7 km/h
2 Forward:
5.2 mile/h / 8.4 km/h
3 Forward:
7.4 mile/h / 11.9 km/h
4 Forward:
10 mile/h / 16.1 km/h
5 Forward:
13.4 mile/h / 21.6 km/h
6 Forward:
18.2 mile/h / 29.3 km/h
7 Forward:
24.5 mile/h / 39.4 km/h
8 Forward:
33.2 mile/h / 53.5 km/h
Reverse:
6.2 mile/h / 9.9 km/h

Hydraulics

Bowl Cylinder Bore:
7.2 in / 184 mm
Bowl Cylinder Stroke:
34.4 in / 873 mm
Apron Cylinder Bore:
8.2 in / 210 mm
Apron Cylinder Stroke:
28.6 in / 727 mm
Ejector Cylinder Bore:
8.2 in / 210 mm
Ejector Cylinder Stroke:
74 in / 1880 mm
Steering Circuit:
100 gal/min / 379 l/min
Scraper Circuit:
91 gal/min / 344 l/min
Cushion Hitch Circuit:
9 gal/min / 34.5 l/min
Secondary Steering Circuit:
100 gal/min / 379 l/min
Relief Valve - Steering Circuit:
1987 psi / 13700 kPa
Relief Valve - Implement Circuit:
2030 psi / 14000 kPa
Compensator Settings - Cushion Hitch Circuit:
2320 psi / 16000 kPa

Steering

Width - 180° Turn:
40.02 ft / 12.2 m
Steering Angle - Right:
90°
Steering Angle - Left:
85°

Service Refill Capacities - Tractor

Crankcase:
11.9 gal (US) / 45 l
Fuel Tank - 631G:
215.04 gal (US) / 814 l
Transmission:
29 gal (US) / 110 l
Differential:
39 gal (US) / 148 l
Final Drive - Each:
6.1 gal (US) / 23 l
Cooling System:
29 gal (US) / 110 l
Hydraulic Reservoir:
50.2 gal (US) / 190 l
Wheel Coolant - Each:
19.8 gal (US) / 75 l
Windshield Washer:
1.5 gal (US) / 6 l

Service Refill Capacities - Scraper

Wheel Coolant - Each:
19.8 gal (US) / 75 l

Dimensions

Width - Overall Machine:
155 in / 3938 mm
Width - Tractor:
137 in / 3481 mm
Width - Rear Tire Center Lines:
97 in / 2464 mm
Width - Inside of Bowl:
134 in / 3405 mm
Width - Outside Rear Tires:
143.2 in / 3636 mm
Height - Overall Shipping:
168.8 in / 4286 mm
Height - Top of Cab:
146.3 in / 3715 mm
Ground Clearance - Tractor:
26.2 in / 665 mm
Front of Tractor to Front Axle:
132.2 in / 3359 mm
Axle to Vertical Hitch Pin:
21.6 in / 548 mm
Height - Scraper Blade Maximum:
21.5 in / 545 mm
Wheel Base:
345.2 in / 8769 mm
Length - Overall Machine:
573.4 in / 14565 mm
Rear Axle - Rear of Machine:
95.97 in / 2437 mm

Weights - Standard, Tandem

Total Shipping:
100005.97 lb / 45362 kg
Total Operating - Empty:
102459.71 lb / 46475 kg
Front Axle:
68647.46 lb / 31138 kg
Rear Axle:
33812.26 lb / 15337 kg
Total Operating - Loaded:
184658.97 lb / 83760 kg
Front Axle Weight - Loaded:
97869.7 lb / 44393 kg
Rear Axle - Weight - Loaded:
86789.28 lb / 39367 kg

Weights

Operating Weight:
102459.71 lb / 46475 kg

Transmission - 631G

1 Forward:
2.9 mile/h / 4.7 km/h
2 Forward:
5.2 mile/h / 8.4 km/h
3 Forward:
7.4 mile/h / 11.9 km/h
4 Forward:
10 mile/h / 16.1 km/h
5 Forward:
13.4 mile/h / 21.6 km/h
6 Forward:
18.2 mile/h / 29.3 km/h
7 Forward:
24.5 mile/h / 39.4 km/h
8 Forward:
33.2 mile/h / 53.5 km/h
Reverse:
6.2 mile/h / 9.9 km/h