Caterpillar 120 GC

Name: Caterpillar 120 GC
Brand: Caterpillar

Configuration: Standard (non-AWD) machine, base weight (ROPS HVAC cab, 10 ft blade, 14-24 tires on single-piece rims, operator); standard 3.7 m (12 ft) moldboard for blade width.

21 sourced values · Sources: Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25

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Dimension diagram

A	Overall length	8,523 mm
B	Overall height	3,347 mm
C	Wheelbase	5,833 mm
D	Ground clearance	369 mm
E	Overall width	2,402 mm
F	Track gauge / tread	Not published

Weights

Spec	Value	Source
Operating weight	12,966 kg	Published: 12,966 kg Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Base machine weight, non-AWD (28,585 lb). AWD 13 705 kg. Typically equipped (12 ft blade, push plate, ripper): 14 496 kg.
Max gross (laden) weight	Not published	Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Not published in this document. (Blade pull table lists "Maximum GVW" blade pull 10 944 kg, which is a force rating, not a weight limit.)

Dimensions

Spec	Value	Source
Overall length	8,523 mm	Published: 8,523 mm Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Front tire to rear of machine, non-AWD. Push plate to ripper 9941 mm.
Overall width	2,402 mm	Published: 2,402 mm Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Width outside front tires, non-AWD (outside rear tires also 2402 mm).
Overall height	3,347 mm	Published: 3,347 mm Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Height to top of cab, high profile. Low profile 3127 mm; max with attachments 3787.8 mm.
Wheelbase	5,833 mm	Published: 5,833 mm Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Front axle to mid tandem, non-AWD. Between tandem axles 1510 mm.
Track gauge / tread	Not published	Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Not published in this document. Front tire center lines (AWD) 2214.9 mm; inside rear tires 1732 mm.
Ground clearance	369 mm	Published: 369 mm Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 At rear axle. At front axle center 610 mm.
Turning radius	≈ 7,600 mm	Published: 7.6 m Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Outside front tires (24.9 ft).

Undercarriage / tires

Spec	Value	Source
Undercarriage type	Wheeled, articulated frame, tandem rear	Published: Wheeled, articulated frame, tandem rear Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Articulation 20.5° left and right.
Number of axles	3	Published: 3 Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Front axle plus tandem rear.
Wheels (count)	6	Published: 6 Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25
Tire size	14-24 (speeds measured with 14.00R24 radial)	Published: 14-24 (speeds measured with 14.00R24 radial) Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25

Ground pressure

Spec	Value	Source
Ground pressure	Not published	Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Not published in this document.

Axle loads

Spec	Value	Source
Axle load, front (unladen/operating)	3,516 kg	Published: 3,516 kg Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Base weight, non-AWD.
Axle load, rear (unladen/operating)	9,450 kg	Published: 9,450 kg Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Base weight, non-AWD (tandem).
Axle load, front (laden/max)	Not published	Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Not published in this document. Typically equipped front axle 3950 kg.
Axle load, rear (laden/max)	Not published	Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Not published in this document. Typically equipped rear axle 10 546 kg.

Engine

Spec	Value	Source
Engine model	Cat C4.4	Published: Cat C4.4 Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 U.S. EPA Tier 4 Final, EU Stage V, Korea Tier 5.
Net power	115 kW	Published: 115 kW Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 ISO 9249/SAE J1349 net, non-AWD (154 hp); range 115-128 kW. AWD 121 kW.
Gross power	Not published	Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Not published in this document.
Displacement	4.4 L	Published: 4.4 L Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 268.5 in³.
Rated speed	2,000 rpm	Published: 2,000 rpm Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Rated speed for net power.

Hydraulics

Spec	Value	Source
Pump / aux flow	155 L/min	Published: 155 L/min Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 System flow 0-155 L/min (40.9 gal/min), variable piston pump.
System / relief pressure	≈ 24.2 MPa	Published: 24,150 kPa Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Pump output pressure (3,503 psi); relief setting not separately stated.

Performance

Spec	Value	Source
Max travel speed	41.5 km/h	Published: 41.5 km/h Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Top speed forward (25.8 mph).
Blade / moldboard width	≈ 3,700 mm	Published: 3.7 m Cat 120 GC Motor Grader Specifications AEXQ3894-00 (09-2024); Cat C4.4, U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 5. Retrieved 2026-10-25 Standard moldboard (12 ft). Options 4.3 m (14 ft), 3.1 m (10 ft).

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