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M Series Motor Graders

Cat motor graders continue their reputation for offering world-class cab and controls, advanced electronics and hydraulics, and optimum productivity... to match your needs in any application.

120M Motor Grader

The Cat® 120M Motor Grader is designed to help you get more work done in less time. Unprecedented operator comfort and ease of service help to maximize your return on investment.

Product Details

Engine

Base Power (1st gear) - Net 103 kW
Engine Model Cat C6.6 ACERT™
Bore 105 mm
Stroke 127 mm
Speed @ Rated Power 2,000 rpm
Base Power (1st gear) – Net (Metric) 103 kW
Maximum Torque (VHP Plus-Net) 906 N·m
Torque Rise (VHP Plus) 40%
VHP Plus Range – Net 103-136 kW (138-182 hp)
VHP Plus Range – Net (Metric) 103-136 kW (140-185 hp)
Displacement 6.6 L
Number of Cylinders 6
Derating Altitude 3505 m
Standard Fan Speed – Maximum 1,150 rpm
Standard Fan Speed – Minimum 600 rpm
Emissions U.S. EPA Tier 3/EU Stage IIIA equivalent
High Ambient Fan Speed – Maximum 1,650 rpm
High Ambient Fan Speed – Minimum 600 rpm
High Ambient Capability 50 ° C
Note No engine derating required up to 3048 m (10,000 ft).

Weights

Operating Weight - Typically Equipped 18400 kg
Gross Vehicle Weight – Base: Total 16231 kg
Gross Vehicle Weight – Base: Front Axle 4220 kg
Gross Vehicle Weight – Base: Rear Axle 12011 kg
Gross Vehicle Weight – Maximum: Total 22045 kg
Gross Vehicle Weight – Maximum: Front Axle 6839 kg
Gross Vehicle Weight – Maximum: Rear Axle 15206 kg
Gross Vehicle Weight – Typically Equipped: Total 18400 kg
Gross Vehicle Weight – Typically Equipped: Front Axle 5090 kg
Gross Vehicle Weight – Typically Equipped: Rear Axle 13310 kg

Moldboard

Blade Width 3.7 m
Moldboard – Height 610 mm
Arc Radius 413 mm
Throat Clearance 134 mm
Moldboard – Width 3.7 m

Frame

Drawbar – Width 76.2 mm
Circle – Diameter 1530 mm
Drawbar – Height 152 mm
Front Frame Structure – Height 280 mm
Front Frame Structure – Width 255 mm
Front Axle – Wheel Lean, Left/Right 18°
Front Axle – Total Oscillation per Side 32°

Blade Range

Circle Centershift – Right 656 mm
Circle Centershift – Left 656 mm
Moldboard Sideshift – Right 660 mm
Moldboard Sideshift – Left 510 mm
Blade Tip Range – Forward 40°
Blade Tip Range – Backward
Maximum Shoulder Reach Outside of Tires – Right 1905 mm
Maximum Shoulder Reach Outside of Tires – Left 1742 mm
Maximum Lift Above Ground 427 mm
Maximum Depth of Cut 720 mm
Catepillar Equipments