120 – 2019 – N Am, Global



Technical Specifications
Benefits and Features

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.

Net Power Range (Tier 4) 139 HP
Standard Capability 122 °F
Number of Cylinders 6
Derating Altitude (AWD) 5499 ft
Torque Rise - ISO 9294 42%
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.
Displacement 427.8 in³
Derating Altitude 9842.5 ft
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
Bore 4.1 in
Engine RPM 2,000
Maximum Torque - AWD On 611 lb/ft
Note (1) Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 Standards in effect at the time of manufacture."
Engine Model Cat 7.1
Stroke 5.3 in
Emissions U.S. EPA Tier 4 Final/EU Stage V - U.S. EPA Tier 3/EU Stage IIIA
Machine Weight
Lever/Steering Wheel Weight* Tier 4 35067 lb
Joystick All-Wheel Drive (AWD) Weight* Tier 4 36846 lb
Lever/Steering Wheel All-Wheel drive (AWD) Weight* Tier 4 36731 lb
Note (1) *Typically equipped includes 4267 mm (14 ft) plus blade, tires, push plate, ripper, bottom guard, operator, and full fluids.
Joystick Weight* Tier 4 35358 lb
Basic Blade Width 12 ft
Length of Machine* 387 in
Width All Wheel Drive (AWD) 2551 mm
Width 102 in
Note *Typically equipped with push block and ripper.
Maximum Height 136.4 in
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 Backward 5
Maximum Lift Above Ground 16.1 in
Circle Center Shift Right 26 in
Blade Tip Range Forward 40
Maximum Shoulder Reach Right 76 in
Moldboard Side Shift Right 26.1 in
Maximum Shoulder Reach Left 69.4 in
Service Refill Capacities
Engine Crankcase 4.8 gal (US)
Diesel Exhaust Fluid Tank (Tier 4 Only) 5 gal (US)
Hydraulic System 25.6 gal (US)
Fuel Tank 65 gal (US)
Transmission and Differential 9 gal (US)
Circle Drive 1.8 gal (US)
Cooling System 14 gal (US)
Arc Radius 16.3 in
End Bit 6 in
Cutting Edge 6 in
Blade Width 12 ft
Blade Height 24 in
Throat Clearance 4.1 in


  • Get to work with balanced weight and power in the Cat C7.1 engine.
  • Increase your fuel economy up to 15% with the standard ECO mode.
  • Cat GRADE technology helps you get to the target grade in fewer passes.
  • The powershift transmission works hard with machine balance to ensure drawbar power to the ground.
  • Power train components are specifically made to be rebuilt.


  • Choose your comfort level in the cab with standard, comfort plus, and premium plus options.
  • With one 203 mm (8 in) color touchscreen, view your machine information from fuel levels to GRADE technology options and machine alerts. The anti-glare screen makes it easy to read no matter how bright it gets.
  • Connect your phone with Bluetooth™ or auxiliary cord option to listen to music and podcasts throughout your work day.
  • Decrease clutter with more storage areas in the cab.
  • The high capacity Heating, Ventilation and Air Conditioning (HVAC) system dehumidifies and pressurizes the cab, circulates fresh air, seals out dust and keeps windows clear from fogging.
  • With the auto-controlled climate option, you can set your ideal temperature.
  • Easily add a radio to the cab using the built-in mounting location.
  • Keep your phone charged with the optional USB charging port along with a spot designed to hold your phone.


  • The next generation motor grader offers updated GRADE technology displayed on the 203 mm (8 in) color touchscreen option.
  • Use the Digital Blade Slope Meter to get to grade without relying on manual grade checkers.
  • Cat GRADE with Cross Slope Indicate option provides a real-time readout of cross slope and can be scaled to Cat GRADE with Cross Slope for automatic blade movement.
  • Cat GRADE Attachment Ready Option (ARO) gives you the connections that you need to add grade control technologies.
  • Stable Blade senses blade bounce before you to reduce manual throttle use and site rework.
  • Product Link™ provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes, and other machine data on demand through the VisionLink® online interface, which helps you improve jobsite efficiency with lower operating costs.
  • Update machine software with Remote Services without taking the machine out of service.


  • View your surroundings with the rear camera option to ensure the safety of you and those around you. The dedicated display can be always on to ensure a safe work environment.
  • The heated lens keeps the rearview camera clear.
  • In the event of an engine stall, count on the secondary steering system to turn on to help you stop the machine safely.
  • Ensure three points of contact when entering and exiting the machine with strategically placed walkways and grab rails.
  • Ground level engine shut-off switch stops all fuel to the engine when activated and shuts down the machine.
  • See the rear of your machine with connecting windows.
  • Work past sundown using the LED light option for increased night time visibility.
  • Keep your work site safer with Cat GRADE technology, which reduces the need for manual grade checking with working machines.


  • Filters, such as fuel, engine air, and oil filters, are grouped together for easy access and preventative maintenance.
  • Be more environmentally friendly with the next generation filters to get up to 15 percent in reduced filtration costs.
  • Maintain roads with the standard drawbar circle moldboard with hardened circle teeth for increased durability.
  • For tight finish grading, consider the top adjust drawbar option for applications that require maximum accuracy. It offers up to 45 percent reduction in maintenance cost over the standard.
  • Hydraulic brakes are well oiled to keep them maintenance free.
  • Lower costly repairs to your circle and pinion with the Circle Saver.


  • Improve the balance of your machine with the counterweight or push block for increased performance and efficiency.
  • Ripper and scarifier options are available to assist with grading hardened ground.
  • The front lift group option is ready for attachments like the straight or front blade.
  • For more road coverage, add a moldboard extension to add 605 mm (24 in).

Standard Equipment:

  • 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

Optional Equipment:

  • 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