Engine

Base Power (1st gear) – Net	118 kW
Engine Model	C6.6 ACERT VHP
Bore	105 mm
Stroke	125 mm
Speed @ Rated Power	2000 RPM
Base Power (all gears) – Net	118 kW
Maximum Torque	859 N·m
Torque Rise (VHP Plus)	40%
VHP Plus Range – Net	118-144 kW (158-193 hp)
VHP Range – Net	118 -129 kW (158-173 hp)
Displacement	6.6 L
Number of Cylinders	6
Derating Altitude	3505 m
Standard – Fan Speed – Maximum	1150 RPM
Standard – Fan Speed – Minimum	550 RPM
Standard – Ambient Capability	43 ° C
High Ambient – Fan Speed – Maximum	1650 RPM
High Ambient – Fan Speed – Minimum	550 RPM
High Ambient Capability	50 ° C

Weights

Gross Vehicle Weight – Maximum – Front Axle	6933 kg
Gross Vehicle Weight – Maximum – Rear Axle	13338 kg
Gross Vehicle Weight – Base – Front Axle	4008 kg
Gross Vehicle Weight – Base – Rear Axle	10514 kg
Gross Vehicle Weight – Maximum – Total	20271 kg
Gross Vehicle Weight – Base – Total	14522 kg

Moldboard

Blade Width	3.7 m
Moldboard – Height	609.6 mm
Moldboard – Thickness	22 mm
Arc Radius	413 mm
Throat Clearance	124 mm
Cutting Edge – Width	152.4 mm
Cutting Edge – Thickness	16 mm
End Bit – Width	152.4 mm
End Bit – Thickness	16 mm
Blade Pull – Base GVW	9463 kg
Blade Pull – Maximum GVW	12004 kg
Blade Down Pressure – Base GVW	7098 kg
Blade Down Pressure – Maximum GVW	12277 kg

Dimensions

Height – Top of Cab	3278 mm
Length – Counterweight to Ripper	9889 mm
Width – Outside Front Tires	2481 mm
Length – Front Axle to Mid Tandem	5915 mm
Length – Front Tire to Rear of Machine	8488 mm
Length – Front Axle to Moldboard	2511 mm
Length – Between Tandem Axles	1511 mm
Width – Outside Rear Tires	2481 mm
Width – Tire Center Lines	2136 mm
Height – Front Axle Center	572 mm
Height to Exhaust Stack	2855 mm
Height to Top of Cylinders	2890 mm
Ground Clearance at Rear Axle	347 mm

Operating Specifications

Top Speed – Forward	44.5 km/h
Top Speed – Reverse	37.8 km/h
Turning Radius, Outside Front Tires	7.46 m
Steering Range – Left/Right	47.5°
Articulation Angle – Left/Right	20°
Forward – 1st	3.9 km/h
Forward – 2nd	5.3 km/h
Forward – 3rd	7.6 km/h
Forward – 4th	10.5 km/h
Forward – 5th	16.4 km/h
Forward – 6th	22.2 km/h
Forward – 7th	30.6 km/h
Forward – 8th	44.5 km/h
Reverse – 1st	3.3 km/h
Reverse – 2nd	6.2 km/h
Reverse – 3rd	8.9 km/h
Reverse – 4th	13.9 km/h
Reverse – 5th	26 km/h
Reverse – 6th	37.8 km/h

Service Refill

Fuel Capacity	340 L
Cooling System	40 L
Hydraulic System – Tank	60 L
Engine Oil	15.5 L
Transmission/Differential/Final Drives	50 L
Tandem Housing (each)	61 L
Front Wheel Spindle Bearing Housing	0.5 L
Circle Drive Housing	7 L

Power Train

Forward/Reverse Gears	8 Fwd / 6 Rev
Transmission	Direct drive, power shift, countershaft
Brakes – Service	Multiple oil-disc
Brakes – Service, Surface Area	23000 cm2
Brakes – Parking	Multiple oil disc
Brakes – Secondary	Dual circuit control system

Hydraulic System

Circuit Type	Electro-hydraulic closed center, load sensing,
Pump Type	Variable piston
Pump Output	193 L/min
Maximum System Pressure	24100 kPa
Standby Pressure	3100 kPa

Frame

Drawbar – Width	76.2 mm
Circle – Diameter	1530 mm
Circle – Blade Beam Thickness	35 mm
Drawbar – Height	152 mm
Front Frame Structure – Height	254 mm
Front Frame Structure – Thickness	16 mm
Front Frame Structure – Width	254 mm
Drawbar – Thickness	9.5 mm
Drawbar - yoke bar thickness	19.1 mm
Front Axle – Height to Center	572 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
Maximum Blade Position Angle	90°
Blade Tip Range – Forward	40°
Blade Tip Range – Backward	5°
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

Standards

Brakes	ISO 3450:1996
ROPS/FOPS	ISO 3471:1992 / ISO 3449:1992
Sound	ISO 6394:1998 / ISO 6395:1988
Steering	ISO 5010:1992

Scarifier

Front, V-Type, 5 or 11 Tooth – Scarifier Shank Holder Spacing	116 mm
Front, V-Type, 5 or 11 Tooth – Scarifier Shank Holders	5 / 11
Front, V-Type, 5 or 11 Tooth – Scarifying Depth, Maximum	467 mm
Front, V-Type, 5 or 11 Tooth – Working Width	1205 mm
Mid, Straight – Scarifier Shank Holder Spacing	111 mm
Mid, Straight – Scarifier Shank Holders	17
Mid, Straight – Scarifying Depth, Maximum	317 mm
Mid, Straight – Working Width	1800 mm
Mid, V-Type – Scarifier Shank Holder Spacing	116 mm
Mid, V-Type – Scarifier Shank Holders	11
Mid, V-Type – Scarifying Depth, Maximum	292 mm
Mid, V-Type – Working Width	1184 mm
Rear – Scarifying Depth, Maximum	266 mm
Rear – Working Width	2300 mm
Rear – Scarifier Shank Holders	9
Rear – Scarifier Shank Holder Spacing	267 mm

Tandems

Height	502 mm
Width	172 mm
Sidewall Thickness – Inner	14 mm
Sidewall Thickness – Outer	16 mm
Drive Chain Pitch	44.5 mm
Wheel Axle Spacing	1510 mm
Tandem Oscillation – Front Up	15°
Tandem Oscillation – Front Down	25°

Operator Station

A technologically advanced cab, featuring joystick controls, provides unmatched comfort and visibility.

Integrated Electronic Solutions

Full systems integration with advanced electronics including Cat® Messenger, AccuGrade™ blade control system and Cat ET, create a “Smart Machine” that optimizes performance and availability.

Steering and Implement Controls

Two joysticks offer precise control and unparalleled ease of operation. This advanced technology makes the 12M the most operator-friendly motor grader in the world.

Work Tools and Attachments

The Work Tools and optional attachments for the 12M expand machine versatility, utilization and performance.

Structures, Drawbar, Circle

The 12M frame provides a solid working platform, and the DCM delivers service ease and precise blade control for maximum productivity.

Power Train

An electronically controlled power shift transmission assures smooth shifting and maximum power to the ground. A modular rear axle and hydraulic brakes simplify serviceability and reduce operating costs.

Engine

The Cat® C6.6 engine combines power management with ACERT™ Technology to deliver maximum power and efficiency in every gear while reducing the environmental impact.

Safety

Caterpillar® has been and continues to be proactive in developing machines that meet or exceed safety standards.

Hydraulics

The electro-hydraulic load-sensing system provides the foundation for advanced machine controls, enabling superior controllability and precise and predictable hydraulic movements, with the reliability you expect from Caterpillar.

Serviceability and Customer Support

Fast component replacement and minimum downtime are possible with Caterpillar’s exceptional parts availability and dealers’ advanced rebuild and repair capabilities.