Open Bowl Scrapers:

631G Wheel Tractor Scraper

Flywheel Power: Tractor/Scraper
373 kW (500 hp)
Scraper Capacity: Heaped
34.0 yd3
Top Speed (Loaded)
33.0 mph
Tractor Engine
Cat® C18 ACERT™

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.



Benefits & Features

Product Specs

  • Tractor Engine

  • Flywheel Power: Tractor/Scraper
    373 kW (500 hp)
    Net Power
    345/373 kW 462/500 hp
    Gross Power - Gears 1-2
    488.0hp
    Gross Power - Gears 3-8
    526.0hp
    Net Power - Gears 1-2
    462.0hp
    Net Power - Gears 3-8
    500.0hp
    Bore
    5.7in
    Stroke
    7.2in
    Displacement
    1105.0in3
  • Scraper Bowl

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

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

  • Tractor Engine
    Cat® C18 ACERT™
  • Weights

  • Operating Weight
    102459.71lb
  • Weights - Standard, tandem

  • Total Shipping
    100005.97lb
    Total Operating - empty
    102459.71lb
    Front Axle
    68647.46lb
    Rear Axle
    33812.26lb
    Total Operating - loaded
    184658.97lb
    Front Axle Weight - loaded
    97869.7lb
    Rear Axle Weight - loaded
    86789.28lb
  • Dimensions

  • Width - Overall Machine
    155.0in
    Width - Tractor
    137.0in
    Width - rear tire center lines
    97.0in
    Width - Inside of Bowl
    134.0in
    Width - Outside Rear Tires
    143.2in
    Height - Overall Shipping
    168.8in
    Height - Top of Cab
    146.3in
    Ground Clearance - Tractor
    26.2in
    Front of Tractor to Front Axle
    132.2in
    Axle to Vertical Hitch Pin
    21.6in
    Height - Scraper Blade Maximum
    21.5in
    Wheelbase
    345.2in
    Length - overall machine
    573.4in
    Rear Axle to Rear of Machine
    95.97in
  • Steering

  • Width - 180° Turn
    40.02ft
    Steering Angle - Right
    90°
    Steering Angle - Left
    85°
  • Service Refill Capacities - Tractor

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

  • Bowl Cylinder Bore
    7.2in
    Bowl Cylinder Stroke
    34.4in
    Apron Cylinder Bore
    8.2in
    Apron Cylinder Stroke
    28.6in
    Ejector Cylinder Bore
    8.2in
    Ejector Cylinder Stroke
    74.0in
    Steering Circuit
    100.0gal/min
    Scraper Circuit
    91.0gal/min
    Cushion Hitch Circuit
    9.0gal/min
    Secondary Steering Circuit
    100.0gal/min
    Relief Valve - Steering Circuit
    1987.0psi
    Relief Valve - Implement Circuit
    2030.0psi
    Compensator Setting - Cushion Hitch Circuit
    2320.0psi
  • Service Refill Capacities - Scraper

  • Wheel Coolant (each)
    19.8gal
  • Transmission - 631G

  • 1 Forward
    2.9mph
    2 Forward
    5.2mph
    3 Forward
    7.4mph
    4 Forward
    10.0mph
    5 Forward
    13.4mph
    6 Forward
    18.2mph
    7 Forward
    24.5mph
    8 Forward
    33.2mph
    Reverse
    6.2mph

Equipment

  • 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

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