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The hard working 12M3 gives you the muscle you need for everyday jobs like road maintenance and snow removal. Like all M Series 3 motor graders, this machine offers the best in productivity and operator comfort.

Cat Specs
Photos
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Engine

Base Power (1st Gear) - Net
179 HP
Bore
4.5 in
Stroke
5.9 in
Displacement
567.5 in³
Derating Altitude
10000 ft
Number of Cylinders
6
Speed at Rated Power
2,000 rpm
Torque Rise
38%
Emissions
U.S. EPA Tier 4 Final/EU Stage IV
Engine Model
Cat® C9.3 ACERT™
Standard Capability
109 °F
Base Power (1st Gear) - Net - Metric
181 HP

Weights

Operating Weight - Typically Equipped
42647 lb

Moldboard

Blade Width
12 ft
Arc Radius
16.3 in
Throat Clearance
6.5 in
End Bit - Thickness
0.6 in
Cutting Edge Thickness
0.6 in
End Bit - Width
6 in
Cutting Edge Width
6 in

Service Refill

Fuel Capacity
104 gal (US)
Hydraulic System - Total
26.4 gal (US)
Hydraulic System - Tank
16.9 gal (US)
Transmission - Differential - Final Drives
18.5 gal (US)
Tandem Housing - Each
20 gal (US)
Front Wheel Spindle Bearing Housing
0.13 gal (US)
Circle Drive Housing
1.8 gal (US)
Cooling System
15 gal (US)
Engine Oil
7.9 gal (US)

Power Train

Forward/Reverse Gears
8 Forward/6 Reverse
Transmission
APECS, Direct Drive, Powershift
Brakes - Secondary
Dual Circuit
Brakes - Service
Multiple Oil Disc
Brakes - Parking
Multiple Oil Disc

Dimensions

Width - Outside Rear Tires
98.9 in
Height - Top of Cab
130 in

Hydraulic System

Circuit Type
Parallel
Pump Type
Variable Piston
Pump Output
55.7 gal/min
Maximum System Pressure
3500 psi
Standby Pressure
885 psi

Standards

ROPS/FOPS
ISO 3471/ISO 3499
Brakes
ISO 3450
Sound
ISO 6394; ISO 6395
Steering
ISO 5010

Blade Range

Maximum Blade Position Angle
90°
Maximum Depth of Cut
28.1 in
Maximum Shoulder Reach Outside of Tires - Right
77.9 in
Moldboard Sideshift - Right
26 in
Blade Tip Range - Forward
40°
Circle Centershift - Right
28.7 in
Maximum Shoulder Reach Outside of Tires - Left
70.5 in
Moldboard Sideshift - Left
20.1 in
Blade Tip Range - Backward
Circle Centershift - Left
27.4 in
Maximum Lift Above Ground
18.9 in

Operating Specifications

Forward - 6th
14.5 mile/h
Reverse - 6th
23 mile/h
Turning Radius - Outside Front Tires
25.59 ft
Reverse - 1st
2 mile/h
Forward - 1st
2.5 mile/h
Reverse - 4th
8.4 mile/h
Top Speed - Forward
29 mile/h
Forward - 4th
6.9 mile/h
Forward - 7th
19.9 mile/h
Steering Range - Left/Right
50°
Reverse - 2nd
3.7 mile/h
Forward - 2nd
3.4 mile/h
Reverse - 5th
15.7 mile/h
Top Speed - Reverse
23 mile/h
Forward - 5th
10.6 mile/h
Forward - 8th
29 mile/h
Articulation Angle - Left/Right
20°
Reverse - 3rd
5.4 mile/h
Forward - 3rd
5 mile/h

Frame

Front Axle - Height to Center
23.5 in
Circle - Diameter
60.2 in
Front Frame Structure - Height
12.6 in
Front Axle - Total Oscillation per Side
32°
Circle - Blade Beam Thickness
1.6 in
Front Frame Structure - Width
12 in
Drawbar - Width
3 in
Drawbar - Height
6 in

Tandems

Tandem Oscillation - Front Up
15°
Tandem Oscillation - Front Down
25°
Sidewall Thickness - Inner
0.63 in
Sidewall Thickness - Outer
0.71 in
Height
19.9 in
Width
7.9 in
Drive Chain Pitch
2 in
Wheel Axle Spacing
60 in

Ripper

Ripping Depth - Maximum
16.8 in
Ripper Shank Holders
5
Penetration Force
20812 lb
Pry-Out Force
27794 lb
Machine Length Increase, Beam Raised
40.6 in