CAT 120H Motor Grader

Dimensions

Overall Length 31′ 8″ (9641 mm)
Base Grader Length 26′ 9″ (8140 mm)
Overall Width 8′ 0″ (2441 mm)
Wheelbase 19′ 3″ (5871 mm)
Tandem Axle Wheelbase 4′ 11″ (1510 mm)
Front Ground Clearance 2′ (608 mm)
Height to Top of Cab 10′ 2″ (3108 mm)

CAT 120H Motor Grader Dimensions

Weight

Engine Cat 3116 DITA Cat 3126B DITA
Operation Weight (GVW) 25040 lb (11358 kg) 27880 lb (12650 kg)
Operation Weight – Front Axle 6976 lb (3164 kg) 7959 lb (3611 kg)
Operation Weight – Rear Axle 18064 lb (8194 kg) 19921 lb (9039 kg)
Max Operation Weight (Max GVW) 27483 lb (12466 kg) 37306 lb (16922 kg)
Max Operation Weight – Front Axle 7618 lb (3455 kg) 11190 lb (5076 kg)
Max Operation Weight – Rear Axle 19865 lb (9011 kg) 23116 lb (11846 kg)

Circle

Diameter 60.3 in (1530 mm)
Rotation 360 degrees
Shift Left 24.7 in (625 mm)
Shift Right 24.8 in (628 mm)
Max Reach Outside Tires – Left 72.5 in (1840 mm)
Max Reach Outside Tires – Right 75.3 in (1912 mm)
Max Lift Above Ground 18 in (457 mm)
Blade Tip Angle – Front 40 degrees
Blade Tip Angle – Rear 5 degrees

CAT 120H Motor Grader Scarifier

Moldboard

Moldboard Width 12.1 ft in (3660 mm)
Moldboard Height 24.1 in (610 mm)
Moldboard Thickness 0.9 in (22 mm)
Max Depth Of Cut 30.6 in (775 mm)
Side Shift Left 20.7 in (524 mm)
Side Shift Right 26 in (660 mm)
Blade Pull At Max Weight 23503.5 lb (10661 kg)
Blade Down Pressure 20062.1 lb (9100 kg)

Engine Details

Engine Cat 3116 DITA Cat 3126B DITA ATAAC VHP
Number Of Cylinders 6 6
Displacement 403 cu in (6.6 L) 403 cu in (6.6 L)
Max Power 151 hp (113 kw) 154 hp (115 kw)
Net Power 140 hp (104 kw) 140 hp (104 kw)
Power Measured @ 2000 rpm 2000 rpm
Peak Torque 478 lb ft (650 Nm) 544 lb ft (737 Nm)
Torque Measured @ 1400 rpm 1400 rpm
Torque Rise 30% 50%
Aspiration Turbocharged and aftercooled (TA) Turbocharged and air-to-air aftercooled (ATAAC)
Emission Standards Tier I U.S. EPA Tier II and EU Stage II

CAT 120H Motor Grader Specs

Operational Specs

Tire Size 13-24 10 PR (G-2)
Operating Voltage 24 V
Alternator Supplied Amperage 35 amps
Battery 2x 12 V, CCA 750

Steering

Articulation Angle 20 degrees
Turning Radius 23.7 ft in (7.2 m)

CAT 120H Motor Grader Cab and Dash

Transmission

Transmission Type Direct drive, powershift transmission
Number Of Gears – Forward 8
Number Of Gears – Reverse 6
Max Speed – Forward 26.5 mph (42.6 km/h)
Max Speed – Reverse 21 mph (33.7 km/h)

Front Axle

Wheel Lean 18 degrees
Oscillation – Total 32 degrees
Ground Clearance 2 ft in (608 mm)

Hydraulic System

Pump Type Axial Piston
Pump Flow 39.1 gal/min (148 L/min)
Relief Valve Pressure 3500 psi (24100 kPa)

CAT 120H Service Refill Capacities

Service Refill Capacities

Engine Cat 3116 DITA Cat 3126B DITA
Fuel Tank Capacity 75 gal (284 L) 90 gal (340 L)
Cooling System Capacity 10.4 gal (40 L) 10.4 gal (40 L)
Engine Oil Capacity 6 gal (23 L) 6 gal (29.5 L)
Hydraulic System Capacity 16 gal (61 L) 17.7 gal (68 L)
Hydraulic Tank Capacity 9.9 gal (38 L) 9.9 gal (38 L)
Tandem Case Fluid Capacity (Each) 12.7 gal (49 L) 12.7 gal (49 L)
Transmission, Differential + Final Drives 12.2 gal (47 L) 12.2 gal (47 L)
Circle Gearbox Fluid Capacity 1.8 gal (7 L) 1.8 gal (7 L)
Front Wheel Spindle Bearing Housing 0.13 gal (0.5 L) 0.13 gal (0.5 L)
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