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M Series Motor Graders(Non Current)

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.

12M Motor Grader

The 12M motor grader represents a revolution in operational efficiency, visibility, service ease and overall productivity, setting the new standard and building on the legacy of high quality you can trust.

  • Specification Summary

  • Base Power (1st gear) – Net 118 kW
  • Blade Width 3.7 m
  • Engine Model C6.6 ACERT VHP
  • Gross Vehicle Weight – Maximum – Total 20271 kg

Product Details

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
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.
Built for it