- Category: Motor Graders ➔
- Manufacturer: Caterpillar ➔
- Model: 120H ➔
The Caterpillar 120H is a motor grader used for road construction, maintenance, and site preparation. Built by Caterpillar, the 120H is known for its articulated frame, moldboard control, and hydraulic systems that support precise grading and leveling work. It is commonly used in highway projects, mining operations, and municipal road maintenance. The machine is designed for blade control, traction, and operator visibility in grading applications. The Caterpillar 120H typically features a diesel engine, tandem drive, and enclosed cab options depending on configuration. It remains a recognized model in the used heavy equipment market for grading and earthmoving tasks.
Circle
| Blade Tip Angle - Front | 40 degrees
|
| Blade Tip Angle - Rear | 5 degrees
|
| Diameter | 60.30 in (153.16 cm)
|
| Max Lift Above Ground | 18.00 in (45.72 cm)
|
| Max Reach Outside Tires - Left | 72.50 in (184.15 cm)
|
| Max Reach Outside Tires - Right | 75.30 in (191.26 cm)
|
| Rotation | 360 degrees
|
| Shift Left | 24.70 in (62.74 cm)
|
| Shift Right | 24.80 in (62.99 cm)
|
Dimensions
| Blade Base | 8.60 ft (2.62 m)
|
| Front Ground Clearance | 2.00 ft (0.61 m)
|
| Height to Top of Isomount Cab | 10.30 ft (3.14 m)
|
| Overall Length | 27.10 ft (8.26 m)
|
| Tandem Axle Wheelbase | 5.00 ft (1.52 m)
|
| Wheelbase | 19.30 ft (5.88 m)
|
| Width Over Tires | 8.10 ft (2.47 m)
|
Engine
| Aspiration | turbocharged
|
| Displacement | 402.80 cu in (6,600.72 cu cm)
|
| Engine Model | 3116 DITA
|
| Max Power | 140.00 hp (104.40 kw)
|
| Net Power Gear 1-2 | 125.00 hp (93.21 kw)
|
| Net Power Gear 4-6 | 125.00 hp (93.21 kw)
|
| Net Power Gears 7-8 | 140.00 hp (104.40 kw)
|
| Number of Cylinders | 6
|
| Power Measured @ | 2000 rpm
|
| Torque Measured @ | 1400 rpm
|
Front Axle
| Ground Clearance | 2.00 ft (0.61 m)
|
| Oscillation - Total | 32 degrees
|
| Wheel Lean | 18 degrees
|
Hydraulic System
| Pump Flow | 39.10 gpm (147.99 lpm)
|
| Pump Type | Axial Piston
|
| Relief Valve Pressure | 3500 psi
|
Moldboard
| Blade Down Pressure | 20,062.10 lbs (9,100.03 kg)
|
| Blade Pull at Max Weight | 23,503.50 lbs (10,661.02 kg)
|
| Max Depth of Cut | 30.60 in (77.72 cm)
|
| Moldboard Height | 24.10 in (61.21 cm)
|
| Moldboard Thickness | 0.90 in (2.29 cm)
|
| Moldboard Width | 12.10 ft (3.69 m)
|
| Side Shift Left | 20.70 in (52.58 cm)
|
| Side Shift Right | 26.00 in (66.04 cm)
|
Operating Specifications
| Alternator Supplied Amperage | 50 amps
|
| Circle Gearbox Fluid Capacity | 1.90 gal (7.19 l)
|
| Cooling System Fluid Capacity | 10.60 gal (40.12 l)
|
| Hydraulic System Fluid Capacity | 18.00 gal (68.13 l)
|
| Oil System Fluid Capacity | 6.10 gal (23.09 l)
|
| Operating Voltage | 24 volts
|
| Rear Diff/Final Drive Fluid Capacity | 12.50 gal (47.31 l)
|
| Std Operation Weight - Front Axle | 7,880.00 lbs (3,574.31 kg)
|
| Std Operation Weight - Rear Axle | 19,720.00 lbs (8,944.85 kg)
|
| Tandem Case Fluid Capacity (each) | 13.00 gal (49.21 l)
|
Steering System
| Articulation Angle | 20 degrees
|
| Turning Radius | 23.70 ft (7.22 m)
|
Transmission
| Max Speed - Forward | 26.50 mph (42.65 kph)
|
| Max Speed - Reverse | 21.00 mph (33.80 kph)
|
| Number of Gears - Forward | 8
|
| Number of Gears - Reverse | 6
|
| Transmission Type | direct drive powershift
|