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631G Wheel Tractor Scraper

631G Wheel Tractor Scraper

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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.

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
488.0 hp
Gross Power - Gears 3-8
526.0 hp
Net Power - Gears 1-2
462.0 hp
Net Power - Gears 3-8
500.0 hp
Bore
5.7 in
Stroke
7.2 in
Displacement
1105.0 in3

Scraper Bowl

Scraper Capacity: Heaped
34.0 yd3
Rated Load
82200.0 lb
Capacity Struck
24.0 yd3
Depth of Cut - max.
17.2 in
Width of Cut, to Router Bits
138.3 in
Ground Clearance - max.
21.5 in
Cutting Edge - thickness
1.12 in.
Hyd. Penetration Force - 631G
57375.0 lb
Depth of Spread - max.
18.9 in
Apron Opening
79.0 in
Apron Closure Force
38250.0 lb

Transmission

Top Speed (Loaded)
33.0 mph
1 Forward
2.9 mph
2 Forward
5.2 mph
3 Forward
7.4 mph
4 Forward
10.0 mph
5 Forward
13.4 mph
6 Forward
18.2 mph
7 Forward
24.5 mph
8 Forward
33.2 mph
Reverse
6.2 mph

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
74.0 in
Steering Circuit
100.0 gal/min
Scraper Circuit
91.0 gal/min
Cushion Hitch Circuit
9.0 gal/min
Secondary Steering Circuit
100.0 gal/min
Relief Valve - Steering Circuit
1987.0 psi
Relief Valve - Implement Circuit
2030.0 psi
Compensator Setting - Cushion Hitch Circuit
2320.0 psi

Steering

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

Service Refill Capacities - Tractor

Crankcase
11.9 gal
Fuel Tank - 631G
215.04 gal
Transmission
29.0 gal
Differential
39.0 gal
Final Drive (per side)
6.1 gal
Cooling System
29.0 gal
Hydraulic Reservoir
50.2 gal
Wheel Coolant (each)
19.8 gal
Windshield Washer
1.5 gal

Service Refill Capacities - Scraper

Wheel Coolant (each)
19.8 gal

Dimensions

Width - Overall Machine
155.0 in
Width - Tractor
137.0 in
Width - rear tire center lines
97.0 in
Width - Inside of Bowl
134.0 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
Wheelbase
345.2 in
Length - overall machine
573.4 in
Rear Axle to 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 mph
2 Forward
5.2 mph
3 Forward
7.4 mph
4 Forward
10.0 mph
5 Forward
13.4 mph
6 Forward
18.2 mph
7 Forward
24.5 mph
8 Forward
33.2 mph
Reverse
6.2 mph
  • ELECTRICAL
    • Alarm, backup
    • Alternator, 75 amp
    • Batteries (4), 12V Maintenance Free, High Output
    • Electrical System, 24V
    • Array
    • Starting Receptacle
  • OPERATOR ENVIRONMENT
    • Air Conditioner (includes heater and defroster)
    • Cigarette Lighter and Ashtray
    • Coat Hook
    • Diagnostic Connection Port (12V)
    • Dome Courtesy Light
    • Array
    • 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
    • Array
    • Array
    • Array
  • 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
    • Array
  • Crankcase Guard, Heavy Duty
  • Extended Life Coolant, -50° C (-58° F)
  • Fan, Defrost
  • Fenders (scraper)
  • Fuel system - (fast-fill European Union Compliant)
  • Heater - jacket water
  • Hydraulic Retarder
  • Lights, Side Vision
  • Lock, Steering
  • Overflow Scraper Guard
  • Powertrain Guard
  • Retractable seat belts
  • Secondary Steering