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Caterpillar 120M2 Motor Grader

The Caterpillar 120M2 is a motor grader designed for road construction, maintenance, and site preparation. It is used for grading, leveling, ditching, and shaping surfaces on highways, municipal roads, mining sites, and general earthmoving projects. The 120M2 features a Caterpillar diesel engine, articulated frame, and moldboard control system for precise blade positioning and material handling. It is commonly configured with front-wheel drive, rear ripper, and various cab and control options depending on application. The model is part of Caterpillar's M-series motor grader line and is known for its balance of visibility, control, and versatility in grading operations.


See all Caterpillar 120M2s for sale

Circle

Blade Tip Angle - Front40 degrees
Blade Tip Angle - Rear5 degrees
Diameter60.30 in (153.16 cm)
Max Lift Above Ground16.90 in (42.93 cm)
Max Reach Outside Tires - Left68.60 in (174.24 cm)
Max Reach Outside Tires - Right75.00 in (190.50 cm)
Rotation360 degrees
Shift Left25.90 in (65.79 cm)
Shift Right25.90 in (65.79 cm)

Dimensions

Blade Base8.30 ft (2.53 m)
Height to Top of Isomount Cab10.90 ft (3.32 m)
Overall Length29.00 ft (8.84 m)
Rear Ground Clearance1.20 ft (0.37 m)
Tandem Axle Wheelbase5.00 ft (1.52 m)
Wheelbase19.50 ft (5.94 m)
Width Over Tires8.30 ft (2.53 m)

Engine

Bore4.20 in (10.67 cm)
Displacement427.80 cu in (7,010.40 cu cm)
Engine ModelC7.1 ACERT
Net Power Gear 1-2145.00 hp (108.13 kw)
Number of Cylinders6
Power Measured @2100 rpm
Stroke5.40 in (13.72 cm)
Torque692.60 lbs ft (939.03 nm)

Front Axle

Ground Clearance1.90 ft (0.58 m)
Oscillation - Total32 degrees
Wheel Lean18 degrees

Hydraulic System

Pump Flow55.70 gpm (210.82 lpm)
Pump TypeVariable Piston
Relief Valve Pressure3500 psi

Moldboard

Blade Down Pressure27,236.00 lbs (12,354.06 kg)
Blade Pull at Max Weight29,980.70 lbs (13,599.03 kg)
Max Depth of Cut28.40 in (72.14 cm)
Moldboard Height24.00 in (60.96 cm)
Moldboard Thickness0.90 in (2.29 cm)
Moldboard Width12.00 ft (3.66 m)
Side Shift Left20.10 in (51.05 cm)
Side Shift Right26.00 in (66.04 cm)

Operating Specifications

Circle Gearbox Fluid Capacity1.90 gal (7.19 l)
Cooling System Fluid Capacity13.00 gal (49.21 l)
Fuel Capacity99.90 gal (378.12 l)
Hydraulic System Fluid Capacity17.00 gal (64.35 l)
Max Operation Weight - Front Axle15,675.00 lbs (7,110.07 kg)
Max Operation Weight - Rear Axle33,312.00 lbs (15,110.09 kg)
Max Operation Weight - Total48,987.00 lbs (22,220.16 kg)
Oil System Fluid Capacity8.00 gal (30.28 l)
Rear Diff/Final Drive Fluid Capacity16.60 gal (62.83 l)
Std Operation Weight - Front Axle10,563.00 lbs (4,791.30 kg)
Std Operation Weight - Rear Axle29,329.00 lbs (13,303.43 kg)
Std Operation Weight - Total39,892.00 lbs (18,094.73 kg)
Tandem Case Fluid Capacity (each)15.60 gal (59.05 l)
Tire Size17.5 R25

Steering System

Articulation Angle20 degrees
Turning Radius24.30 ft (7.41 m)

Transmission

Max Speed - Forward28.40 mph (45.71 kph)
Max Speed - Reverse22.50 mph (36.21 kph)
Number of Gears - Forward8
Number of Gears - Reverse6
Transmission TypeDirect Drive Powershift

  • Caterpillar 120M2s currently for sale
  • A 2016 Caterpillar 120M2 From Fabick Cat for $89,000.00 USD
  • A 2012 Caterpillar 120M2 From JL Hollinger & Sons for $90,000.00 USD
  • A 2014 Caterpillar 120M2 From 4M Iron LLC for $94,750.00 USD
  • A 2016 Caterpillar 120M2 From A. Montano Co., Inc. for $169,500.00 USD



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