120 GC

Cat® Motor Graders for Road Construction, Site Prep, and Material Moving Jobsites - Cat® Motor Graders are built to deliver precision and performance on road construction, road maintenance, site preparation, and material moving projects. Backed by decades of Caterpillar design expertise, these machines offer exceptional grading accuracy and durability in a range of applications—from highway building and urban infrastructure to large-scale mining and heavy-duty earthmoving. Available in multiple sizes to match your specific jobsite needs, Cat Motor Graders feature advanced technology to boost operator productivity and grading efficiency. Enhance machine performance with Cat® Motor Grader attachments designed to dig, spread, plow, and precisely meet grade specifications across varying terrain and material types.

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Specifications

Air Conditioning System

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas.
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Blade Range

Blade Tip Range - Backward

5°
{"Name":"Blade Tip Range - Backward","SpecificationId":null,"TextValue":"5°","EnglishUnit":null,"EnglishValue":null,"MetricUnit":null,"MetricValue":null,"Type":"text","SpecificationGroup":"Blade Range","SortOrder":"99"}
Moldboard Sideshift - Right

26.1 in 663 mm
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Moldboard Sideshift - Left

20.2 in 512 mm
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Maximum Lift Above Ground

16.1 in 410 mm
{"Name":"Maximum Lift Above Ground","SpecificationId":null,"TextValue":null,"EnglishUnit":"in","EnglishValue":"16.1","MetricUnit":"mm","MetricValue":"410","Type":"measurement","SpecificationGroup":"Blade Range","SortOrder":"99"}
Circle Centershift - Left

25.8 in 656 mm
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Blade Tip Range - Forward

40°
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Circle Centershift - Right

25.8 in 656 mm
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Maximum Depth of Cut

30.5 in 775 mm
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Dimensions

Length of Machine*

391.4 in 9941 mm
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Maximum Height

149.1 in 3787.8 mm
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Width

94.6 in 2402 mm
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Note

*Typically equipped with push block and ripper.
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Engine

Net Power - ISO 9249/SAE J1349

171 hp 128 kW
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Maximum Torque

544 lb/ft 738 N·m
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Displacement

268.5 in³ 4.4 l
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Engine Power AWD (ISO 14396)

128 kW 171 hp
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Note (1)

Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 standards in effect at the time of manufacture. 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. Power as declared per ISO 14396.
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Emissions

Meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 5 emission standards
{"Name":"Emissions","SpecificationId":null,"TextValue":"Meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 5 emission standards","EnglishUnit":null,"EnglishValue":null,"MetricUnit":null,"MetricValue":null,"Type":"text","SpecificationGroup":"Engine","SortOrder":"99"}
Stroke

5 in 127 mm
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Derating Altitude

9842 ft 3000 m
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Bore

4.1 in 105 mm
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Engine Model

Cat® C4.4
{"Name":"Engine Model","SpecificationId":null,"TextValue":"Cat® C4.4","EnglishUnit":null,"EnglishValue":null,"MetricUnit":null,"MetricValue":null,"Type":"text","SpecificationGroup":"Engine","SortOrder":"99"}
Torque Rise - ISO 9294

21%
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Machine Weight

All-Wheel Drive (AWD) Weight

36376 lb 16500 kg
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Moldboard

Blade Width

12 ft 3.7 m
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Cutting Edge Width

6 in 152 mm
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Throat Clearance

4.7 in 112 mm
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Arc Radius

16.3 in 413 mm
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End Bit - Width

152 in 6 mm
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Blade Height

20 in 580 mm
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Service Refill Capacities

Cooling System

10.3 gal (US) 39 l
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Circle Drive without Slip Clutch

0.4 gal (US) 1.5 l
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Hydraulic System

14.5 gal (US) 55 l
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Circle Drive with Slip Clutch

1.8 gal (US) 7 l
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Transmission

4.5 gal (US) 17 l
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Diesel Exhaust Fluid Tank (Tier 4 Only)

3.2 gal (US) 12 l
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Fuel Tank

71 gal (US) 269 l
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Engine Crankcase

2 gal (US) 7.6 l
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Sustainability

Recyclability

92%
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Weights

Operating Weight - Typically Equipped

31958 lb 14496 kg
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Benefits

Productive and Economical

Increase your fuel economy up to 5% with the standard ECO mode.
The on-demand fan reduces fuel consumption and under-hood heat for longer component life.
Improve productivity with the Electronic Throttle Control which matches engine power and torque to application requirements.
The powershift transmission and machine balanced design ensures that you get full drawbar power to the ground with the Cat C4.4 engine.
The hydraulic system makes the machines more precise and predictable for a consistent grade.
The all-wheel drive (AWD) option assists with traction and maneuvering the machine. The increased power helps you to handle slopes and loose material better.
The Digital Blade Slope Meter option shows you the grade without relying on manual grade checkers.
Product Link™ provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes, and other machine data ondemand through the VisionLink® online interface, which helps you improve jobsite efficiency with lower operating costs.

Cab Keeps You Comfortable All Day Long

Choose your comfort level in the cab with standard, mechanical suspension or air suspension seat.
Easily adjust the control console and steering wheel.

The high capacity Heating, Ventilation and Air Conditioning (HVAC) system option circulates fresh air, prevents dust entry, and keeps windows from fogging.

Easily add a radio to the cab using the built-in mounting location option.

Reliable Performance

The drawbar circle moldboard stays factory tight providing precision grading pass after pass.
The machine structure is built for a long life. It’s designed to use several types of work tools, such as a front blade.
A slip clutch option protects the circle drive if the machine strikes an immovable object.
The front axle maximizes bearing life while also minimizing maintenance.
Reduce daily greasing requirements and costly repairs to your circle and pinion with the Circle Saver option.

Safely Home Every Day

See what’s behind you with the rear camera option. The dedicated display can be always on to ensure a safe workenvironment.
In the event of an engine stall, count on the secondary steering system option to help stop the machine safely.
Use 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 side and rearview mirrors.
Work past sundown using the strategically placed lights for nighttime visibility.

Maintenance Made Easy

Filters, such as fuel, engine air, and oil filters, are grouped together for easy access and preventative maintenance.
The standard drawbar circle moldboard increases durability using hardened circle teeth and replaceable wear inserts to help sustain factory tightness.
Brake adjustments are maintenance free and easily accessible.
The standard bottom guard shields the transmission and filter. Optional guarding protects your machine from damage in demanding applications.
Spend less time cleaning the cooling system with the reversing fan option, which reduces costs when cleaned once per week for more uptime.

Attachments to Fit Your Needs

Improve the performance and efficiency of your machine with the push block option.
Ripper and scarifier options are available to assist with grading hard ground.
Add the front blade option to spread more material faster.
The optional tow hitch allows you to tow equipment or implements behind the machine.

Sustainability

The Cat® C4.4 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrogenated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
Cat® Grade helps reduce fuel burn and greenhouse gas emissions by enabling you to achieve grade faster and more accurately by automating blade actions.
Cat Scheduled Oil Sampling (S•O•S?) Services helps reveal excessive wear, contaminated fluids or other “unseen” issues that can shorten component life. In many cases, you can extend oil and coolant change intervals by using fluid monitoring. Consult your Cat dealer or the machine's operation and maintenance manual for more information.
Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
VisionLink® displays the CO2 emissions for monitored assets, calculated by fuel type for the Runtime Fuel Burned each day in a selected date range.
Don't waste fuel idling. Cat VisionLink® online fleet monitoring helps you manage idle time and reduce fuel burn and greenhouse gas emissions.
Cat® Reman parts are a sustainable choice. New Cat parts are designed with the potential to have more than one life, so Cat Reman parts are truly remanufactured — not just repaired, rebuilt or reconditioned. Because the process ensures the latest design changes are incorporated into Cat Reman parts, you get like new quality and outstanding performance at lower cost.

*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Equipment Info

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

CAB

Standard Seat

ENGINE

Cat C4.4

DRAWBAR CIRCLE MOLDBOARD

Standard

SAFETY

Parking brake

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