Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200
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.
| 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) |
| Blade Base | 8.30 ft (2.53 m) |
| Height to Top of Isomount Cab | 10.90 ft (3.32 m) |
| Overall Length | 29.00 ft (8.84 m) |
| Rear Ground Clearance | 1.20 ft (0.37 m) |
| Tandem Axle Wheelbase | 5.00 ft (1.52 m) |
| Wheelbase | 19.50 ft (5.94 m) |
| Width Over Tires | 8.30 ft (2.53 m) |
| 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) |
| Ground Clearance | 1.90 ft (0.58 m) |
| Oscillation - Total | 32 degrees |
| Wheel Lean | 18 degrees |
| Pump Flow | 55.70 gpm (210.82 lpm) |
| Pump Type | Variable Piston |
| Relief Valve Pressure | 3500 psi |
| Blade Down Pressure | 27,236.00 lbs (12,354.06 kg) |
| Blade Pull at Max Weight | 29,980.70 lbs (13,599.03 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) |
| 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 (7,110.07 kg) |
| Max Operation Weight - Rear Axle | 33,312.00 lbs (15,110.09 kg) |
| Max Operation Weight - Total | 48,987.00 lbs (22,220.16 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 (4,791.30 kg) |
| Std Operation Weight - Rear Axle | 29,329.00 lbs (13,303.43 kg) |
| Std Operation Weight - Total | 39,892.00 lbs (18,094.73 kg) |
| Tandem Case Fluid Capacity (each) | 15.60 gal (59.05 l) |
| Tire Size | 17.5 R25 |
| Articulation Angle | 20 degrees |
| Turning Radius | 24.30 ft (7.41 m) |
| 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 |