Ag EquipmentCaterpillar MachinesArticulated TrucksBackhoe LoadersCold PlanersCompactorsFeller BunchersForest MachinesForwardersHarvestersHydraulic ExcavatorsIndustrial LoadersKnuckleboom LoadersMaterial HandlersMotor GradersMulti Terrain LoadersOff Highway TractorsOff Highway TrucksPaving EquipmentPipelayersRoad ReclaimersScrapersSkid Steer LoadersSkiddersTelehandlersTrack LoadersTrack-Type TractorsUnderground MiningWheel DozersWheel ExcavatorsWheel LoadersUsed EquipmentManufacturer List
E-MAIL NEWSLETTERS
News, tips, specials & more
SUBSCRIBE NOW >>

Caterpillar 12M Motor Grader

The 12M delivers multiple technological breakthroughs to give you the best return on your investment.


View/Download Product Brochure (PDF)

View Product Tour


Overview &
Specifications		Features
& Benefits		Standard
Equipment		Optional
Equipment		Work Tools &
Attachments		 

Engine
Base Power (all gears) Net158 hp / 118 kW
Engine ModelCat® C6.6 ACERT™ VHP
Displacement403 in3 / 6.6 L
Bore4.13 in / 105 mm
Stroke4.92 in / 125 mm
Speed @ rated power2000 RPM
Number of cylinders6
Derating altitude11500 ft / 3505 m
Std - Fan speed - max1150 RPM
Std - Fan speed - min550 RPM
Std - Ambient Capability109 ° F / 43 ° C
Hi Ambient - Fan speed - max1650 RPM
Hi Ambient - Fan speed - min550 RPM
Hi Ambient Capability122 ° F / 50 ° C

Weights
Gross Vehicle Weight - base32016 lb / 14522 kg
Gross Vehicle Weight, max44690 lb / 20271 kg
Gross Vehicle Wt, max - front axle15284 lb / 6933 kg
Gross Vehicle Wt, max - rear axle29406 lb / 13338 kg
Gross Vehicle Wt, base - front axle8836 lb / 4008 kg
Gross Vehicle Wt, base - rear axle23180 lb / 10514 kg

Moldboard
Blade width12 ft / 3.668 m
Moldboard - height24 in / 609.6 mm
Moldboard - thickness.87 in / 22 mm
Arc radius16.3 in / 413 mm
Throat clearance4.88 in / 124 mm
Cutting edge - width6 in / 152.4 mm
Cutting edge - thickness.6 in / 16 mm
End Bit - width6 in / 152.4 mm
End Bit - thickness.6 in / 16 mm
Blade Pull - base GVW20862 lb / 9463 kg
Blade Pull - max GVW26465 lb / 12004 kg
Down Pressure - base GVW15649 lb / 7098 kg
Down Pressure - max GVW27067 lb / 12277 kg

Frame
Drawbar - yoke bar thickness.75 in / 19.1 mm
Drawbar - thickness.4 in / 9.5 mm
Drawbar - width3 in / 76.2 mm
Circle - diameter60.2 in / 1530 mm
Circle - blade beam thickness1.4 in / 35 mm
Drawbar - height6 in / 152 mm
Front axle - height to center22.5 in / 572 mm
Front axle - wheel lean, left/right18°
Front axle - total oscillation per side32°

Operating Specifications
Top Speed - Fwd.27.7 mph / 44.5 km/h
Top Speed - Rev.23.5 mph / 37.8 km/h
Turning radius, outside front tires24.5 ft / 7.46 m
Steering range - left/right47.5°
Articulation angle - left/right20°
Fwd. 1st2.4 mph / 3.9 km/h
Fwd. 2nd3.3 mph / 5.3 km/h
Fwd. 3rd4.75 mph / 7.6 km/h
Fwd. 4th6.5 mph / 10.5 km/h
Fwd. 5th10.2 mph / 16.4 km/h
Fwd. 6th13.8 mph / 22.2 km/h
Fwd. 7th19 mph / 30.6 km/h
Fwd. 8th27.7 mph / 44.5 km/h
Rev. 1st2 mph / 3.3 km/h
Rev. 2nd3.8 mph / 6.2 km/h
Rev. 3rd5.6 mph / 8.9 km/h
Rev. 4th8.6 mph / 13.9 km/h
Rev. 5th16.1 mph / 26 km/h
Rev. 6th23.5 mph / 37.8 km/h

Service Refill
Fuel Capacity90 gal / 340 L
Cooling system10.4 gal / 40 L
Hydraulic system - tank16 gal / 60 L
Engine Oil4.1 gal / 15.5 L
Trans./Diff./Final Drives13.2 gal / 50 L
Tandem housing (each)16.9 gal / 61 L
Front wheel spindle bearing housing.1 gal / .5 L
Circle drive housing1.8 gal / 7 L

Power Train
Forward/Reverse Gears8 Fwd / 6 Rev
TransmissionDirect drive, power shift, countershaft
Brakes - ServiceMultiple oil-disc
Brakes - Service, surface area3565 in2 / 23000 cm2
Brakes - ParkingMultiple oil disc
Brakes - SecondaryDual circuit control system

Hydraulic System
Circuit typeElectro-hydraulic closed center, load sensing,
Pump typeVariable piston
Pump output51 gal/min / 193 L/min
Maximum system pressure3500 psi / 24100 kPa
Standby Pressure450 psi / 3100 kPa

Blade Range
Circle centershift - right25.8 in / 656 mm
Circle centershift - left25.8 in / 656 mm
Moldboard sideshift - right26 in / 660 mm
Moldboard sideshift - left20.1 in / 510 mm
Maximum blade position angle90°
Blade tip range - forward40°
Blade tip range - backward5°
Maximum shoulder reach outside of tires - right75 in / 1905 mm
Maximum shoulder reach outside of tires - left68.6 in / 1742 mm
Maximum lift above ground16.8 in / 427 mm
Maximum depth of cut28.3 in / 720 mm

Scarifier
Rear: Working width91 in / 2300 mm
Rear: Scarifier shank holders9
Rear: Scarifier shank holder spacing10.5 in / 267 mm

Tandems
Height19.76 in / 502 mm
Width6.76 in / 172 mm
Sidewall thickness - inner.5 in / 14 mm
Sidewall thickness - outer.6 in / 16 mm
Drive chain pitch1.8 in / 44.5 mm
Wheel axle spacing59.5 in / 1510 mm
Tandem oscillation - front up15°
Tandem oscillation - front down25°

Dimensions
Height - top of cab129 in / 3278 mm
Length - counterweight to ripper389.3 in / 9889 mm
Width - outside front tires97.7 in / 2481 mm
Length - front axle to mid tandem232.8 in / 5915 mm
Length - front tire to rear of machine334.1 in / 8488 mm
Length - front axle to moldboard98.85 in / 2511 mm
Length - between tandem axles59.5 in / 1511 mm
Width - outside rear tires97.7 in / 2481 mm
Width - tire center lines84.1 in / 2136 mm
Height - front axle center22.5 in / 572 mm
Height to exhaust stack112.4 in / 2855 mm
Height to top of cylinders113.7 in / 2890 mm
Ground clearance at rear axle13.6 in / 347 mm

 
INDIANA'S LEADING EQUIPMENT DEALER

MacAllister Machinery has 14 convenient locations throughout Indiana: Beech Grove, Bloomington, Fishers, Fort Wayne, Greensburg, Indianapolis (HQ, Power Systems), Indianapolis (West), Lafayette, Muncie, Richmond, South Bend, Terre Haute, and Washington.

Headquarters: 7515 E 30th St, Indianapolis, IN 46219
Phone: (317) 545-2151  In-State Toll Free: (800) 382-1896  Out of State Toll Free: (800) 227-3228