Motor Graders

120 - 2019 - N Am, Global

Net Power Range (Tier 4)

139 HP

Lever/Steering Wheel Weight* Tier 4

35,067 lb

Basic Blade Width

12 ft


The Next Generation Cat® 120 motor grader offers the options of joystick or steering wheel and lever controls with the all-wheel drive option. Save up to 15 percent in fuel consumption. Cab and comfort options help improve performance. Factory integrated technology, such as Cat Grade with Cross Slope and Stable Blade options ensure grade for any project.

    Blade Range

    Maximum Depth of Cut

    30.5 in

    Moldboard Side Shift Left

    20.1 in

    Circle Center Shift Left

    26 in

    Blade Tip Range Forward


    Blade Tip Range Backward


    Maximum Lift Above Ground

    16.1 in

    Circle Center Shift Right

    26 in

    Maximum Shoulder Reach Right

    76 in

    Moldboard Side Shift Right

    26.1 in

    Maximum Shoulder Reach Left

    69.4 in


    Basic Blade Width

    12 ft

    Length of Machine*

    387 in

    Maximum Height

    136.4 in

    Width All Wheel Drive (AWD)

    2,551 mm


    102 in


    *Typically equipped with push block and ripper.


    Net Power Range (Tier 4)

    139 HP


    5.3 in

    Note (1)

    Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 Standards in effect at the time of manufacture."

    Number of Cylinders


    Standard Capability

    122 °F


    U.S. EPA Tier 4 Final/EU Stage V - U.S. EPA Tier 3/EU Stage IIIA

    Maximum Torque - ISO 9249

    606 lb/ft

    All-Wheel Drive Net Power Range (Tier 3)

    130 HP

    Net Power Range (Tier 3)

    130 HP

    Note (3)

    Power as declared per ISO 14396


    4.1 in

    Derating Altitude (AWD)

    5,499 ft

    Engine RPM


    Maximum Torque - AWD On

    611 lb/ft

    Torque Rise - ISO 9294


    Engine Model

    Cat 7.1

    Note (2)

    Net power advertised is the power available at rated speed of 2,000 rpm, measured at the flywheel when engine is equipped with fan, air cleaner, muffler and alternator.


    427.8 in³

    Derating Altitude

    9,842.5 ft

    Machine Weight

    Lever/Steering Wheel Weight* Tier 4

    35,067 lb

    Joystick Weight* Tier 4

    35,358 lb

    Note (1)

    *Typically equipped includes 4267 mm (14 ft) plus blade, tires, push plate, ripper, bottom guard, operator, and full fluids.

    Joystick All-Wheel Drive (AWD) Weight* Tier 4

    36,846 lb

    Lever/Steering Wheel All-Wheel drive (AWD) Weight* Tier 4

    36,731 lb


    Blade Height

    24 in

    Blade Width

    12 ft

    Arc Radius

    16.3 in

    Throat Clearance

    4.1 in

    End Bit


    Cutting Edge


    Service Refill Capacities

    Diesel Exhaust Fluid Tank (Tier 4 Only)

    gal (US)

    Engine Crankcase

    4.8 gal (US)

    Transmission and Differential

    gal (US)

    Circle Drive

    1.8 gal (US)

    Fuel Tank

    65 gal (US)

    Hydraulic System

    25.6 gal (US)

    Cooling System

    14 gal (US)

    • NOTE
      • Standard and optional equipment may vary. Consult your Cat dealer for details.
    • Cab
      • Vinyl Seat
      • ROPS, Standard Sound Suppression
      • Heating/Cooling Cab System
      • Base Cab
      • 254 mm (10 in) Hybrid Information Display
      • Halogen Lighting
    • Cat Connect Technology
      • Product Link
    • Engine
      • Cat C7.1
      • ECO Mode
      • Hydraulic Demand Fan
    • Drawbar Circle Moldboard
      • Standard
      • Circle Drive Slip Clutch
    • Safety
      • Parking brake
      • Signaling/warning horn
      • Rearview mirror
      • Hydraulic brakes
      • Secondary steering system
      • Side view mirrors
      • Walkways and Grab Rails

    • NOTE
      • Standard and optional equipment may vary. Consult your Cat dealer for details.
    • Cab
      • Cloth or Leather Seat
      • Steering Wheel/Lever Controls
      • Joystick Controls
      • Rear Wiper
      • Comfort Plus
      • Premium Plus
      • Seatbelt Indicator
      • Heated/Cooled Seat
      • Bluetooth/Auxiliary Radio
      • LED Lighting
      • Rear Window Screen
    • Cat Connect Technology
      • Cat GRADE with Digital Blade Slope Meter
      • Cat GRADE with Cross Slope Indicate
      • Cat GRADE with Cross Slope
      • Cat GRADE Attachment Ready Option (ARO)
      • Stable Blade
      • Remote Services
    • Engine
      • All-Wheel Drive (AWD)
    • Drawbar Circle Moldboard
      • Top Adjust
      • Circle Saver
    • Safety
      • Rearview camera
    • Versatility
      • Counterweight
      • Push Block
      • Ripper
      • Scarifier
      • Front Lift Group
      • Front Blade
      • Front Blade


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