Open Bowl Scrapers:

637G Wheel Tractor Scraper

Flywheel Power: Tractor/Scraper
373 kW (500 hp) / 211 kW (283 hp)
Scraper Capacity: Heaped
34.0 yd3
Top Speed (Loaded)
33.0 mph
Tractor Engine
Cat C18 ACERT™

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Caterpillar Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.



Product Specs

  • Tractor Engine

  • Flywheel Power: Tractor/Scraper
    373 kW (500 hp) / 211 kW (283 hp)
    Flywheel Power - Tractor/Scraper
    373 kW (500 hp) / 211 kW (283 hp)
    Net Power
    345 kW (462 hp) / 373 kW (500 hp)
    Gross Power - Gears 1-2
    488HP
    Gross Power - Gears 3-8
    526HP
    Net Power - Gears 1-2
    462HP
    Net Power - Gears 3-8
    500HP
    Bore
    5.7in
    Stroke
    7.2in
    Displacement
    1105in³
  • 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.
    Depth of Spread - max.
    18.9in
    Apron Opening
    79.0in
    Scraper Capacity - Heaped
    34yd³
    Rated Load
    82200lb
    Capacity - Struck
    24yd³
    Depth of Cut - Maximum
    17.2in
    Width - Cut - To Router Bits
    138.3in
    Ground Clearance - Maximum
    21.5in
    Cutting Edge Thickness
    1.12in
    Depth of Spread - Maximum
    18.9in
    Apron Opening
    79in
    Hyd. Penetration Force - 637G
    81000lb
    Apron Closure Force
    38250lb
  • Transmission

  • Top Speed (Loaded)
    33.0mph
    1 Forward
    3.4mph
    2 Forward
    6.2mph
    3 Forward
    7.6mph
    4 Forward
    10.3mph
    5 Forward
    13.8mph
    6 Forward
    18.7mph
    7 Forward
    25.2mph
    8 Forward
    34.1mph
    Reverse
    6.2mph
    Top Speed - Loaded
    33mile/h
    1 Forward
    3.4mile/h
    2 Forward
    6.2mile/h
    3 Forward
    7.6mile/h
    4 Forward
    10.3mile/h
    5 Forward
    13.8mile/h
    6 Forward
    18.7mile/h
    7 Forward
    25.2mile/h
    8 Forward
    34.1mile/h
    Reverse
    6.2mile/h
  • Engine

  • Tractor Engine
    Cat C18 ACERT™
    Scraper Engine
    Cat C9 ACERT™
    Tractor Engine
    Cat C18 ACERT™
    Scraper Engine
    Cat C9 ACERT™
  • 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
    Extended Push Block (push-pull)
    108.0in
    Width - Overall Machine
    155in
    Width - Tractor
    137in
    Width - Rear Tire Center Lines
    97in
    Width - Inside of Bowl
    134in
    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
    Wheel Base
    345.2in
    Length - Overall Machine
    573.4in
    Rear Axle - Rear of Machine
    95.97in
    Extended Push Block (Push-Pull)
    108in
    Width - Outside Bowl - Shipping Width
    154in
    Bail Length - Maximum (Push-Pull)
    195.3in
  • Steering

  • Width - 180° Turn
    40.02ft
    Steering Angle - Right
    90°
    Steering Angle - Left
    85°
    Hydraulic Output
    100.0gal/min
    Width - 180° Turn
    40.02ft
    Steering Angle - Right
    90°
    Steering Angle - Left
    85°
    Hydraulic Output
    100gal/min
    Width - 180° Turn - Right
    40.1ft
  • Service Refill Capacities - Tractor

  • Transmission
    29.0gal
    Differential
    39.0gal
    Final Drive (per side)
    6.1gal
    Cooling System
    29.0gal
    Hydraulic Reservoir
    50.2gal
    Cooling System
    29gal (US)
    Differential
    39gal (US)
    Final Drive - Each
    6.1gal (US)
    Hydraulic Reservoir
    50.2gal (US)
    Transmission
    29gal (US)
    Crankcase
    11.9gal (US)
    Fuel Tank - 637G
    335gal (US)
    Wheel Coolant - Each
    19.8gal (US)
    Windshield Washer
    1.5gal (US)
  • 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
    Relief Valve - Steering Circuit
    1987.0psi
    Relief Valve - Implement Circuit
    2030.0psi
    Compensator Setting - Cushion Hitch Circuit
    2320.0psi
    Ejector Cylinder Bore
    8.2in
    Ejector Cylinder Stroke
    74in
    Steering Circuit
    100gal/min
    Scraper Circuit
    91gal/min
    Cushion Hitch Circuit
    9gal/min
    Relief Valve - Steering Circuit
    1987psi
    Relief Valve - Implement Circuit
    2030psi
    Compensator Settings - Cushion Hitch Circuit
    2320psi
    Secondary Steering Circuit
    100gal/min
    Bowl Cylinder Bore
    7.2in
    Bowl Cylinder Stroke
    34.4in
    Apron Cylinder Bore
    8.2in
    Apron Cylinder Stroke
    28.6in
  • Scraper Engine

  • Net Power
    198 kW (266 hp) / 211 kW (283 hp)
    Gross Power - Gear 1
    286HP
    Gross Power - Gears 2-4
    303HP
    Net Power - Gear 1
    266HP
    Net Power - Gears 2-4
    283HP
    Bore
    4.4in
    Stroke
    5.9in
    Displacement
    538in³
  • Weights - Standard, Tandem

  • Total Shipping
    112760lb
    Tractor Shipping
    66529lb
    Scraper Shipping
    46231lb
    Total Operating - Empty
    114744lb
    Front Axle
    67700lb
    Rear Axle
    47044lb
    Total Operating - Loaded
    196944lb
    Front Axle Weight - Loaded
    96503lb
    Rear Axle - Weight - Loaded
    100441lb
  • Weights - Push-Pull

  • Total Shipping
    116100lb
    Tractor Shipping
    68499lb
    Scraper Shipping
    47601lb
    Total Operating - Empty
    118084lb
    Front Axle
    69670lb
    Rear Axle
    48414lb
    Total Operating - Loaded
    200284lb
    Front Axle - Loaded
    98139lb
    Rear Axle - Loaded
    102145lb
  • Service Refill Capacities - Scraper

  • Fuel Tank - 637G
    335gal (US)
    Crankcase
    7.9gal (US)
    Transmission
    19gal (US)
    Differential
    3.2gal (US)
    Final Drive - Each
    5gal (US)
    Wheel Coolant - Each
    19.8gal (US)
    Cooling System
    20gal (US)
  • Transmission - 637G

  • 1 Forward
    3.4mile/h
    2 Forward
    6.2mile/h
    3 Forward
    7.6mile/h
    4 Forward
    10.3mile/h
    5 Forward
    13.8mile/h
    6 Forward
    18.7mile/h
    7 Forward
    25.2mile/h
    8 Forward
    34.1mile/h
    Reverse
    6.2mile/h

Equipment

  • Electrical
    • Alarm, backup
    • Alternator, 75 amp - tractor engine
    • Alternator, 35 amp - scraper engine
    • Batteries (4), 12V Maintenance Free, High Output
    • Batteries (2), 12V Maintenance Free, High Output
    • Electrical System, 24V
    • Lighting System - Tractor
    • Lighting System - Scraper
    • Starting Receptacle - tractor and scraper engines
  • 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
    • Scraper Engine Controls
    • 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:
    • Scraper:

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