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, and construction sites. The 120M2 is part of Caterpillar's M Series motor grader line and is commonly configured with a moldboard, articulated frame, and rear tandem drive for controlled blade performance. Typical applications include fine grading, snow removal, and material spreading. The machine is valued for its balance of visibility, maneuverability, and grading control in earthmoving and infrastructure work.
Circle
Caterpillar 120M2 Motor Grader Circle specifications
Blade Tip Angle - Front
40 degrees
Blade Tip Angle - Rear
5 degrees
Diameter
60.30 in (153.16 cm)
Max Lift Above Ground
16.90 in (42.93 cm)
Max Reach Outside Tires - Left
68.60 in (174.24 cm)
Max Reach Outside Tires - Right
75.00 in (190.50 cm)
Rotation
360 degrees
Shift Left
25.90 in (65.79 cm)
Shift Right
25.90 in (65.79 cm)
Dimensions
Caterpillar 120M2 Motor Grader Dimensions specifications
Blade Base
8.24 ft (2.51 m)
Height
10.75 ft (3.28 m)
Height To Top Of Isomount Cab
10.86 ft (3.31 m)
Length
28.75 ft (8.76 m)
Overall Length
28.94 ft (8.82 m)
Rear Ground Clearance
1.15 ft (0.35 m)
Tandem Axle Wheelbase
4.96 ft (1.51 m)
Weight
39,892.00 lbs (18,094.73 kg)
Wheelbase
19.42 ft (5.92 m)
Width
8.17 ft (2.49 m)
Width Over Tires
8.24 ft (2.51 m)
Engine
Caterpillar 120M2 Motor Grader Engine specifications
Bore
4.20 in (10.67 cm)
Displacement
427.80 cu in (7,010.40 cu cm)
Engine Model
C7.1 ACERT
Net Power Gear 1-2
145.00 hp (108.13 kw)
Number Of Cylinders
6
Power Measured @
2100 rpm
Stroke
5.40 in (13.72 cm)
Torque
692.60 lbs ft (939.03 nm)
Front Axle
Caterpillar 120M2 Motor Grader Front Axle specifications
Ground Clearance
1.90 ft (0.58 m)
Oscillation - Total
32 degrees
Wheel Lean
18 degrees
Hydraulic System
Caterpillar 120M2 Motor Grader Hydraulic System specifications
Pump Flow
55.70 gpm (210.82 lpm)
Pump Type
Variable Piston
Relief Valve Pressure
3500 psi
Moldboard
Caterpillar 120M2 Motor Grader Moldboard specifications
Blade Down Pressure
27,236.00 lbs (12,351.93 kg)
Blade Pull At Max Weight
29,980.70 lbs (13,596.69 kg)
Max Depth Of Cut
28.40 in (72.14 cm)
Moldboard Height
24.00 in (60.96 cm)
Moldboard Thickness
0.90 in (2.29 cm)
Moldboard Width
12.00 ft (3.66 m)
Side Shift Left
20.10 in (51.05 cm)
Side Shift Right
26.00 in (66.04 cm)
Operational
Caterpillar 120M2 Motor Grader Operational specifications
Circle Gearbox Fluid Capacity
1.90 gal (7.19 l)
Cooling System Fluid Capacity
13.00 gal (49.21 l)
Fuel Capacity
99.90 gal (378.12 l)
Hydraulic System Fluid Capacity
17.00 gal (64.35 l)
Max Operation Weight - Front Axle
15,675.00 lbs (7,108.84 kg)
Max Operation Weight - Rear Axle
33,312.00 lbs (15,107.48 kg)
Max Operation Weight - Total
48,987.00 lbs (22,216.33 kg)
Oil System Fluid Capacity
8.00 gal (30.28 l)
Rear Diff/Final Drive Fluid Capacity
16.60 gal (62.83 l)
Std Operation Weight - Front Axle
10,563.00 lbs (4,790.48 kg)
Std Operation Weight - Rear Axle
29,329.00 lbs (13,301.13 kg)
Std Operation Weight - Total
39,892.00 lbs (18,091.61 kg)
Tandem Case Fluid Capacity (Each)
15.60 gal (59.05 l)
Tire Size
17.5 R25
Steering
Caterpillar 120M2 Motor Grader Steering specifications
Articulation Angle
20 degrees
Turning Radius
24.30 ft (7.41 m)
Transmission
Caterpillar 120M2 Motor Grader Transmission specifications
Max Speed - Forward
28.40 mph (45.71 kph)
Max Speed - Reverse
22.50 mph (36.21 kph)
Number Of Gears - Forward
8
Number Of Gears - Reverse
6
Transmission Type
Direct Drive, Powershift
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