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Overview

The Cat® 12M Motor Grader is designed to help you get more work done in less time with a 4.2 m (14 ft) moldboard. Unprecedented operator comfort and ease of service help to maximize your return on investment.

Engine

Units:
Base Power (1st gear) - Net 183.0 hp 136.0 kW Less
Engine Model Cat C7 ACERT™ Cat C7 ACERT™ Less
Bore 4.3 in 110.0 mm Less
Stroke 5.0 in 127.0 mm Less
Speed @ Rated Power 2,000 rpm 2,000 rpm Less
Base Power (1st gear) – Net (Metric) 186.0 hp 136.0 kW Less
Maximum Torque 776.0 lbf-ft 1052.0 N·m Less
Torque Rise 39% 39% Less
VHP Plus Range – Net 136-159 kW (183-213 hp) 136-159 kW (183-213 hp) Less
VHP Plus Range – Net (Metric) 136-159 kW (186-216 hp) 136-159 kW (186-216 hp) Less
Standard – Maximum Fan Speed 1,450 rpm 1,450 rpm Less
Standard – Minimum Fan Speed 600 rpm 600 rpm Less
Emissions Equivalent to U.S. EPA Tier 3/EU Stage IIIA Equivalent to U.S. EPA Tier 3/EU Stage IIIA Less
High Ambient – Maximum Fan Speed 1,650 rpm 1,650 rpm Less
High Ambient – Minimum Fan Speed 600 rpm 600 rpm Less
Note Maximum torque (VHP Plus) measured at 1,000 rpm. Maximum torque (VHP Plus) measured at 1,000 rpm. Less
Note Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 Standards in effect at the time of manufacture. Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 Standards in effect at the time of manufacture. Less
Note Net power advertised is the power available at rated speed of 2,000 rpm, measured at the flywheel when engine is equipped with fan running at minimum speed, air cleaner, muffler and alternator. Net power advertised is the power available at rated speed of 2,000 rpm, measured at the flywheel when engine is equipped with fan running at minimum speed, air cleaner, muffler and alternator. Less
Note Power as declared per ISO 14396 – Rated Speed = 2,000 rpm – VHP Plus = 160 kW (214 hp) Power as declared per ISO 14396 – Rated Speed = 2,000 rpm – VHP Plus = 160 kW (214 hp) Less
Note No engine derating required up to 3048 m (10,000 ft). No engine derating required up to 3048 m (10,000 ft). Less
Displacement 439.0 in3 7.2 L Less
Number of Cylinders 6 6 Less
Derating Altitude 10000.0 ft 3048.0 m Less
High Ambient Capability 122.0 ° F 50.0 ° C Less

Frame

Circle Diameter 60.2 in 1530.0 mm Less
Drawbar Height 6.0 in 152.0 mm Less
Drawbar Width 3.0 in 76.2 mm Less
Front Frame Structure – Height 12.0 in 305.0 mm Less
Front Frame Structure – Width 12.0 in 305.0 mm Less
Front Frame Structure – Thickness 0.6 in 16.0 mm Less
Front Axle – Wheel Lean, Left/Right 18° 18° Less
Front Axle – Total Oscillation per Side 32° 32° Less

Moldboard

Blade Width 14.0 ft 4.2 m Less
Arc Radius 16.3 in 413.0 mm Less
Throat Clearance 6.5 in 166.0 mm Less
Moldboard – Width 14.0 ft 4.2 m Less
Moldboard – Height 24.0 in 610.0 mm Less

Blade Range

Maximum Depth of Cut 29.5 in 750.0 mm Less
Circle Centershift – Right 28.7 in 728.0 mm Less
Circle Centershift – Left 27.4 in 695.0 mm Less
Moldboard Sideshift – Right 26.0 in 660.0 mm Less
Moldboard Sideshift – Left 20.1 in 510.0 mm Less
Blade Tip Range – Forward 40° 40° Less
Blade Tip Range – Backward Less
Maximum Shoulder Reach Outside of Tires – Right 89.7 in 2278.0 mm Less
Maximum Shoulder Reach Outside of Tires – Left 82.3 in 2090.0 mm Less
Maximum Lift Above Ground 17.8 in 452.0 mm Less

Weights

Operating Weight - Typically Equipped 40565.0 lb 18400.0 kg Less
Gross Vehicle Weight, Base with 4.2 m × 610 mm × 22 mm (14 ft × 24 in × 7⁄8 in) blade – Total 36003.0 lb 16331.0 kg Less
Gross Vehicle Weight, Base with 4.2 m × 610 mm × 22 mm (14 ft × 24 in × 7⁄8 in) blade – Front Axle 9431.0 lb 4278.0 kg Less
Gross Vehicle Weight, Base with 4.2 m × 610 mm × 22 mm (14 ft × 24 in × 7⁄8 in) blade – Rear Axle 26572.0 lb 12053.0 kg Less
Gross Vehicle Weight, Maximum – Total 48601.0 lb 22045.0 kg Less
Gross Vehicle Weight, Maximum – Front Axle 15077.0 lb 6839.0 kg Less
Gross Vehicle Weight, Maximum – Rear Axle 33523.0 lb 15206.0 kg Less
Operating Weight, Typically Equipped – Total 40565.0 lb 18400.0 kg Less
Operating Weight, Typically Equipped – Front Axle 11221.0 lb 5090.0 kg Less
Operating Weight, Typically Equipped – Rear Axle 29343.0 lb 13310.0 kg Less

Performance

  • Programmable Autoshift option simplifies operation by allowing transmission to be programmed to shift at optimal points to match application.
  • Power Shift Countershaft Transmission matches to engine, maximizing power to the ground.
  • Electronic Throttle Control helps improve productivity by providing best match of horsepower and torque for application demands.

Efficiency

  • Aggressive blade angle, optimized moldboard curvature and large throat clearance allow material to roll more freely along blade, increasing efficiency.
  • Hydraulic demand fan automatically adjusts speed according to cooling requirements resulting in more power to the ground and improved fuel efficiency.
  • Engine idle shutdown is available to shut down engine after a set period of time saving fuel and helping reduce emissions.

Ease of Operation

  • Selectable blade lift modes – Fine, Normal, or Coarse – allow you to choose the blade lift modulation mode that best fits your application or operating style.
  • Joystick controls with electronically adjustable control pods reduce hand and arm movement by 78%, helping reduce operator fatigue.
  • Left joystick controls steering, articulation, return-to-center, wheel lean, gear selection, left moldboard lift cylinder and float.
  • Right joystick controls drawbar, circle and moldboard functions as well as electronic throttle control and manual differential lock/unlock.
  • Articulation Return-to-Center automatically returns machine to a straight frame position from any angle with the touch of a button.

Safety

  • Angled cab doors, tapered engine enclosure and sloped rear window make it easy to see moldboard and tires, as well as behind the machine.
  • Optional rear vision camera enhances sight to rear of machine.

Serviceability

  • Sacrificial brass wear strips between blade mounting group and moldboard can be easily adjusted and replaced.
  • Shimless Moldboard Retention System uses vertical and horizontal adjusting screws to keep moldboard wear strips aligned for reduced blade chatter and precise blade control.

Comfort

  • Control pods can be adjusted electronically, making it easy to set to ideal operating position.
  • Standard Cat Comfort Series suspension seat is fully adjustable.
  • High capacity Heating, Ventilation, and Air Conditioning (HVAC) system dehumidifies and pressurizes cab, sealing out dust, and helps keep windows clear.

Technology

  • Shuttle Shift allows smooth, fast direction shifts without requiring you to manipulate the throttle or inching pedal.
  • Cat Product Link™ aids your equipment management with remote monitoring capabilities.
  • Optional Stable Blade improves grading precision by decreasing engine speed at 15 percent intervals when machine bounce is detected then increases engine rpm systematically when grader stabilizes.
  • Optional Auto Articulation allows you to articulate automatically while steering in tight spaces or around curves, obstacles, and turnarounds.
  • Optional Cat GRADE with Cross Slope helps maintain desired cross slope by automatically controlling one side of the blade.
  • Optional Cat AccuGrade uses positioning and guidance technologies, machine sensors, and automatic blade control to help get to grade faster, easier and more efficiently.
  • Optional Cat Advanced Control Joysticks allow you to control automated grading solutions efficiently and safely without removing your hands from the joysticks.