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    Categories ↠ Scrapers ↠ Caterpillar 631G

    Caterpillar 631G Scraper

    The Caterpillar 631G is a wheel tractor-scraper used in earthmoving, mining, road construction, and large-scale site preparation. As a scraper, it is designed to cut, load, haul, and spread material efficiently over medium to long distances. The 631G is part of Caterpillar's G-series scraper lineup and is commonly configured for high-production bulk material movement. Typical applications include grading, embankment construction, and mass excavation. The machine is known for its articulated design, large bowl capacity, and compatibility with push-loading operations. The Caterpillar 631G scraper is used where fast cycle times and high-volume soil handling are required.


    See all Caterpillar 631Gs for sale

    Bowl

    Heaped Capacity31.00 cu yd (23.70 cu m)
    Max Depth of Cut17.20 in (43.69 cm)
    Rated Payload75,000.00 lbs (34,019.47 kg)
    Struck Capacity21.00 cu yd (16.06 cu m)
    Width of Cut11.60 ft (3.54 m)

    Dimensions

    Axle to Vertical Hitch Pin21.60 in (54.86 cm)
    Height - Overall Shipping167.80 in (426.21 cm)
    Height - Scraper Blade Maximum21.50 in (54.61 cm)
    Height - Top of Cab12.20 ft (3.72 m)
    Length - Overall Machine573.40 in (1,456.44 cm)
    Overall Height14.10 ft (4.30 m)
    Overall Length47.80 ft (14.57 m)
    Overall Width13.00 ft (3.96 m)
    Tractor Ground Clearance2.20 ft (0.67 m)
    Wheelbase28.80 ft (8.78 m)
    Width - Inside of Bowl134.00 in (340.36 cm)
    Width - Outside Rear Tires143.20 in (363.73 cm)
    Width - Tractor137.00 in (347.98 cm)

    Engine

    Tractor Engine3408E

    Hydraulic System

    Apron Cylinder Bore8.20 in (20.83 cm)
    Apron Cylinder Stroke28.60 in (72.64 cm)
    Bowl Cylinder Bore7.20 in (18.29 cm)
    Bowl Cylinder Stroke34.40 in (87.38 cm)
    Compensator Settings - Cushion Hitch Circuit2320 psi
    Cushion Hitch Circuit9.00 gpm (34.07 lpm)
    Ejector Cylinder Bore8.30 in (21.08 cm)
    Ejector Cylinder Stroke74.00 in (187.96 cm)
    Relief Valve - Implement Circuit2030 psi
    Relief Valve - Steering Circuit1987 psi
    Scraper Circuit91.00 gpm (344.44 lpm)
    Secondary Steering Circuit77.00 gpm (291.45 lpm)
    Steering Circuit103.00 gpm (389.86 lpm)

    Operating Specifications

    Alternator Supplied Amperage75 amps
    Cooling System Fluid Capacity32.00 gal (121.12 l)
    Differential Fluid Capacity36.00 gal (136.26 l)
    Engine Oil Fluid Capacity11.70 gal (44.28 l)
    Fuel Capacity215.10 gal (814.15 l)
    Hydraulic System Fluid Capacity50.20 gal (190.01 l)
    Operating Voltage24 volts
    Tire Size37.50-R35
    Transmission Fluid Capacity33.00 gal (124.91 l)
    Wheel Coolant Fluid Capacity - each19.80 gal (74.94 l)

    Scraper Bowl

    Apron Closure Force38,250.00 lbs (17,349.93 kg)
    Apron Opening79.00 in (200.66 cm)
    Capacity - Struck21.00 cu yd (16.06 cu m)
    Capacity Heaped34.00 cu yd (25.99 cu m)
    Cutting Edge Thickness1.70 in (4.32 cm)
    Depth of Spread - Maximum18.90 in (48.01 cm)
    Ground Clearance - Maximum21.50 in (54.61 cm)
    Hyd. Penetration Force - 621G57,375.00 lbs (26,024.89 kg)
    Rated Load75,000.00 lbs (34,019.47 kg)
    Scraper Capacity - Heaped31.00 cu yd (23.70 cu m)

    Service Refill Capacities - Scraper

    Wheel Coolant - Each19.80 gal (74.94 l)

    Service Refill Capacities - Tractor

    Cooling System32.00 gal (121.12 l)
    Crankcase11.70 gal (44.28 l)
    Differential36.00 gal (136.26 l)
    Final Drive - Each7.00 gal (26.50 l)
    Hydraulic Reservoir50.00 gal (189.25 l)
    Transmission33.00 gal (124.91 l)
    Wheel Coolant - Each19.50 gal (73.81 l)
    Windshield Washer6.00 gal (22.71 l)

    Standards

    BrakesMeets ISO 3450: 1996 standard

    Steering System

    Ground-Driven Secondary Steering System51.00 gpm (193.04 lpm)
    Hydraulic Output96.20 gpm (364.12 lpm)
    Steering Angle - Left85 degrees
    Steering Angle - Right90 degrees
    Width - 180 degrees Turn40.10 ft (12.22 m)

    Tractor Engine

    Caterpillar Net Power490.00 hp (365.40 kw)
    Displacement1,099.00 cu in (18,009.42 cu cm)
    EEC 80/1269490.00 hp (365.40 kw)
    Flywheel Power - Tractor/Scraper373 kW (500)
    Gross Power515.00 hp (384.04 kw)
    Gross Power - Gears 3-8515.00 hp (384.04 kw)
    ISO 9249490.00 hp (365.40 kw)
    MakeCaterpillar
    Net Power - Gears 1-2450.00 hp (335.57 kw)
    Net Power - Gears 3-8490.00 hp (365.40 kw)
    Net Power - Tractor/Scraper336 kW (450)
    SAE J1349490.00 hp (365.40 kw)

    Transmission

    1 Forward2.90 mph (4.67 kph)
    2 Forward5.20 mph (8.37 kph)
    3 Forward7.40 mph (11.91 kph)
    4 Forward10.00 mph (16.09 kph)
    5 Forward13.40 mph (21.57 kph)
    6 Forward18.20 mph (29.29 kph)
    7 Forward24.50 mph (39.43 kph)
    8 Forward33.20 mph (53.43 kph)
    Max Speed Forward33.20 mph (53.43 kph)
    Max Speed Reverse6.20 mph (9.98 kph)
    Number of Forward Gears8
    Number of Reverse Gears1
    Reverse6.20 mph (9.98 kph)
    Top Speed - Loaded33.00 mph (53.11 kph)
    Transmission Type8-speed automatic Powershift with Electronic Control

    Weights

    Front Axel - loaded94,054.00 lbs (42,662.23 kg)
    Front Axle - empty68,647.50 lbs (31,138.02 kg)
    Operating Weight102,460.00 lbs (46,475.13 kg)
    Rear Axle - empty33,812.30 lbs (15,337.02 kg)
    Rear Axle - loaded83,406.00 lbs (37,832.37 kg)
    Total Operating - empty102,459.80 lbs (46,475.04 kg)
    Total Operating - Loaded177,460.00 lbs (80,494.60 kg)

    Weights - Standard, Tandem

    Front Axle68,648.00 lbs (31,138.25 kg)
    Front Axle Weight - Loaded94,054.00 lbs (42,662.23 kg)
    Rear Axle33,812.00 lbs (15,336.88 kg)
    Rear Axle - Weight - Loaded83,406.00 lbs (37,832.37 kg)
    Scraper Shipping54,004.00 lbs (24,495.83 kg)
    Total Operating - Empty102,460.00 lbs (46,475.13 kg)
    Total Operating - Loaded177,460.00 lbs (80,494.60 kg)
    Total Shipping100,006.00 lbs (45,362.01 kg)
    Tractor Shipping46,002.00 lbs (20,866.18 kg)
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