CAT® 120 Motor Grader

CAT® 120 Motor Grader


Net Power Range (Tier 4) 139 HP
Standard Capability 122 °F
Number of Cylinders 6
Derating Altitude (AWD) 5499 ft
Torque Rise - ISO 9294 42%
Note (2) Net power advertised is the power available at rated speed of 2,000 rpm, measured at the flywheel when engine is equipped with fan, air cleaner, muffler and alternator.
Displacement 427.8 in³
Derating Altitude 9842.5 ft
Maximum Torque - ISO 9249 606 lb/ft
All-Wheel Drive Net Power Range (Tier 3) 130 HP
Net Power Range (Tier 3) 130 HP
Note (3) Power as declared per ISO 14396
Bore 4.1 in
Engine RPM 2,000
Maximum Torque - AWD On 611 lb/ft
Note (1) Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 Standards in effect at the time of manufacture."
Engine Model Cat 7.1
Stroke 5.3 in
Emissions U.S. EPA Tier 4 Final/EU Stage V - U.S. EPA Tier 3/EU Stage IIIA


Lever/Steering Wheel Weight* Tier 4 35067 lb
Joystick All-Wheel Drive (AWD) Weight* Tier 4 36846 lb
Lever/Steering Wheel All-Wheel drive (AWD) Weight* Tier 4 36731 lb
Note (1) *Typically equipped includes 4267 mm (14 ft) plus blade, tires, push plate, ripper, bottom guard, operator, and full fluids.
Joystick Weight* Tier 4 35358 lb


Basic Blade Width 12 ft
Length of Machine* 387 in
Width All Wheel Drive (AWD) 2551 mm
Width 102 in
Note *Typically equipped with push block and ripper.
Maximum Height 151 in


Maximum Depth of Cut 30.5 in
Moldboard Side Shift Left 20.1 in
Circle Center Shift Left 26 in
Blade Tip Range Backward 5
Maximum Lift Above Ground 16.1 in
Circle Center Shift Right 26 in
Blade Tip Range Forward 40
Maximum Shoulder Reach Right 76 in
Moldboard Side Shift Right 26.1 in
Maximum Shoulder Reach Left 69.4 in


Engine Crankcase 4.8 gal (US)
Diesel Exhaust Fluid Tank (Tier 4 Only) 5 gal (US)
Hydraulic System 25.6 gal (US)
Fuel Tank 65 gal (US)
Transmission and Differential 9 gal (US)
Circle Drive 1.8 gal (US)
Cooling System 14 gal (US)


Arc Radius 16.3 in
End Bit 6 in
Cutting Edge 6 in
Blade Width 12 ft
Blade Height 24 in
Throat Clearance 4.1 in