12M3 Motor Grader

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12M3 Motor Grader

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 ...
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Engine

Base Power (1st Gear) - Net
179HP
Engine Model
Cat® C9.3 ACERT™
Bore
4.5in
Stroke
5.9in
Speed at Rated Power
2,000 rpm
VHP Plus Range - Net - Metric
133-172 kW (181-234 hp)
VHP Plus Range - Net
133-172 kW (179-231 hp)
VHP Plus - Gear - Net Power - Forward 7th
225HP
VHP Plus - Gear - Net Power - Forward 6th
220HP
VHP Plus - Gear - Net Power - Forward 5th
215HP
VHP Plus - Gear - Net Power - Forward 4th
210HP
VHP Plus - Gear - Net Power - Forward 3rd
200HP
VHP Plus - Gear - Net Power - Forward 2nd
189HP
Torque Rise
38%
VHP Plus - Gear - Net Power - Forward 1st
179HP
Standard Capability
109°F
Maximum Torque - VHP Plus
840lb/ft
High Ambient - Fan Speed - Standard
1,400 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV
Base Power (1st Gear) - Net - Metric
181HP
VHP Plus - Gear - Net Power - Forward 8th
231HP
VHP Plus - Gear - Net Power - Reverse 1st
179HP
VHP Plus - Gear - Net Power - Reverse 2nd
189HP
VHP Plus - Gear - Net Power - Reverse 3rd-6th
200HP
Displacement
567.5in³
Number of Cylinders
6
Derating Altitude
10000ft
High Ambient - Fan Speed - Maximum
1,550 rpm
High Ambient - Fan Speed - Minimum
500 rpm
High - Ambient Capability
122°F

Weights

Operating Weight - Typically Equipped
42647lb
Gross Vehicle Weight - Maximum - Front Axle
17075lb
Gross Vehicle Weight - Maximum - Rear Axle
38069lb
Operating Weight - Typically Equipped - Front Axle
12055lb
Operating Weight - Typically Equipped - Rear Axle
30592lb
Gross Vehicle Weight - Base - Front Axle
9343lb
Gross Vehicle Weight - Base - Rear Axle
28077lb
Gross Vehicle Weight - Maximum - Total
55144lb
Gross Vehicle Weight - Base - Total
37420lb
Operating Weight - Typically Equipped - Total
42647lb

Moldboard

Blade Width
12ft
Moldboard - Height
24in
Moldboard - Thickness
0.87in
Arc Radius
16.3in
Throat Clearance
6.5in
Cutting Edge Width
6in
Cutting Edge Thickness
0.6in
End Bit - Width
6in
End Bit - Thickness
0.6in
Blade Pull - Base GVW
25269lb
Blade Pull - Maximum GVW
34262lb
Blade Down Pressure - Base GVW
16038lb
Blade Down Pressure - Maximum GVW
29309lb
Moldboard - Blade Width
12ft

Operating Specifications

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

Service Refill

Fuel Capacity
104gal (US)
Cooling System
15gal (US)
Hydraulic System - Total
26.4gal (US)
Hydraulic System - Tank
16.9gal (US)
Diesel Exhaust Fluid
5.8gal (US)
Transmission - Differential - Final Drives
18.5gal (US)
Engine Oil
7.9gal (US)
Tandem Housing - Each
20gal (US)
Front Wheel Spindle Bearing Housing
0.13gal (US)
Circle Drive Housing
1.8gal (US)

Power Train

Forward/Reverse Gears
8 Forward/6 Reverse
Transmission
APECS, Direct Drive, Powershift
Brakes - Service
Multiple Oil Disc
Brakes - Service - Surface Area
3565in²
Brakes - Parking
Multiple Oil Disc
Brakes - Secondary
Dual Circuit

Hydraulic System

Circuit Type
Parallel
Pump Type
Variable Piston
Pump Output
55.7gal/min
Maximum System Pressure
3500psi
Reservoir Tank Capacity
16.9gal (US)
Standby Pressure
885psi

Frame

Drawbar - Width
3in
Circle - Diameter
60.2in
Circle - Blade Beam Thickness
1.6in
Drawbar - Height
6in
Circle - Height
5.4in
Front Frame Structure - Height
12.6in
Front Frame Structure - Width
12in
Drawbar - Thickness
0.5in
Front-Top/Bottom Plate - Width
12in
Front-Top/Bottom Plate - Thickness
0.87in
Front Axle - Height to Center
23.5in
Front Axle - Wheel Lean - Left/Right
18°
Front Axle - Total Oscillation per Side
32°

Blade Range

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

Standards

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

Scarifier

Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing
4.6in
Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holders
5/11
Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum
18.4in
Front, V-Type, 5 or 11 Tooth - Working Width
40.6in
Front, V-Type - Working Width
47.4in
Mid, V-Type - Scarifier Shank Holders
11
Mid, V-Type - Scarifier Shank Holder Spacing
4.6in
Mid, V-Type - Scarifying Depth, Maximum
11.5in
Mid, V-Type - Working Width
46.6in
Rear - Scarifying Depth, Maximum
16.8in
Rear - Working Width
84in
Rear - Scarifier Shank Holders
9
Rear - Scarifier Shank Holder Spacing
10.5in

Ripper

Ripping Depth - Maximum
16.8in
Ripper Shank Holder Spacing
21in
Ripper Shank Holders
5
Penetration Force
20812lb
Pry-Out Force
27794lb
Machine Length Increase, Beam Raised
40.6in

Tandems

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

Dimensions

Height - Top of Cab
130in
Length - Counterweight to Ripper
399in
Width - Outside Front Tires
98.9in
Length - Front Axle to Mid Tandem
241in
Length - Front Tire to Rear of Machine
351in
Length - Front Axle to Moldboard
100in
Length - Between Tandem Axles
60in
Width - Outside Rear Tires
98.9in
Width - Tire Center Lines
84.3in
Height - Front Axle Center
23.5in
Height - Exhaust Stack
128in
Height - Top of Cylinders
120in
Ground Clearance - Rear Axle
13.3in

Standard Equipment:

Optional Equipment:

    Electrical
    • Alternator, 280 ampere
    • Batteries: extreme duty, 1,400 CCA
    • Lights: Headlights, high
    • Lights: Headlights, low
    • Lights: Working lights, basic
    • Lights: Working lights, plus, LED
    • Lights: Warning: beacon or strobe
    • Lights: Mounting for warning light
    Guards
    • Articulation guard
    • Fenders, front
    • Fenders, rear
    • Front axle guard
    • Sound suppression (bottom)
    • Sound suppression (enclosure)
    • Transmission
    Operator Environment
    • Mirrors, outside: heated 24V
    • Mirrors, outside: mounted
    • Comfort Plus Arrangement
    • Comfort Premium Arrangement
    Power Train
    • All Wheel Drive
    • Precleaner, snow
    • Starter, extreme duty, 1,000 Amps
    • Transmission, autoshift
    Other Attachments
    • AccuGrade ARO
    • Integrated cross slope
    • Accumulators, blade lift
    • Camera, rearview
    • Cat Product Link 321SR
    • Cat Product Link 522
    • Drain, ecology, engine Wiggins
    • Heater, engine coolant: 120V
    • Heater, engine coolant: 240V
    • Hydraulic arrangements with one or more additional hydraulic valves are available for rear ripper, dozer, snow plow and snow wing.
    • Snow wing mounting, frame ready
    • Starting aid, ether
    • Reversing fan, automatic or manual
    Work Tools/g.e.t.
    • Blade extension, left hand, 610 mm (2 ft)
    • Blade extension, right hand, 610 mm (2 ft)
    • Counterweight
    • Cutting edges, curved
    • Endbits, overlay
    • Front lift group, mounting
    • Front lift group, mechanical
    • Grader bit, narrow and super penetration
    • Mid-Mount Scarifier, Package
    • Moldboard: 4267 mm × 610 mm × 22 mm (14 ft × 24 in × 7/8 in)
    • Moldboard: 4267 mm × 686 mm × 25 mm (14 ft × 27 in × 1 in)
    • Push plate
    • Ripper, rear
    • Ripper tooth
    • Scarifier, front
    • Snow Arrangement
    • Snow Wing Ready Package
    • Tow hitch
    Machine Arrangements
    • Canadian Arrangement
    • European Arrangement
    • TUV Roading Arrangement
    Optional Tire Arrangements
    • Rim Size - 9 × 24; Wheel Group - Single-Piece; Tires - 14.0R24
    • Rim Size - 13 × 25; Wheel Group - Single-Piece; Tires - 17.5R25
    • Rim Size - 10 × 24; Wheel Group - Multi-Piece; Tires - 14.0R24
    • Rim Size - 10 × 24; Wheel Group - Multi-Piece; Tires - 14.0-24
    • Rim Size - 14 × 25; Wheel Group - Multi-Piece; Tires - 17.5R25
    • Rim Size - 14 × 25; Wheel Group - Multi-Piece; Tires - 17.5-25
    • Note: Consult your dealer for individual tire width, size and brand.