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12M Motor Grader

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

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Product Specs

Engine

Base Power (1st Gear) - Net
158 mm H2O
Engine Model
Cat® C6.6 ACERT™ VHP
Engine Model
Cat® C6.6 ACERT™ VHP
Bore
4.13 in
Bore
4.13 in
Stroke
4.92 in
Stroke
4.92 in
Speed at Rated Power
2000 RPM
Base Power (All Gears) - Net
158 mm H2O
Maximum Torque
690 lb/ft
VHP Plus Range - Net
118-144 kW (158-193 hp)
VHP Range - Net
118 -129 kW (158-173 hp)
Base Power (all gears) - Net
158.0 hp
Maximum Torque
690.0 lb ft
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
403 in³
Displacement
403.0 in3
Number of Cylinders
6
Number of Cylinders
6
Derating Altitude
11500 ft
Derating Altitude
11500.0 ft
Standard - Fan Speed - Maximum
1150 RPM
Standard - Fan Speed - Maximum
1150 RPM
Standard - Fan Speed - Minimum
550 RPM
Standard - Fan Speed - Minimum
550 RPM
Standard - Ambient Capability
109.0 ° F
Standard - Ambient Capability
109 °F
High Ambient - Fan Speed - Maximum
1650 RPM
High Ambient - Fan Speed - Minimum
550 RPM
High - Ambient Capability
122 °F

Moldboard

Blade Width
12 ft
Moldboard - Height
24 in
Moldboard - Height
24.0 in
Moldboard - Thickness
0.87 in
Moldboard - Thickness
0.87 in
Arc Radius
16.3 in
Throat Clearance
4.88 in
Cutting Edge Width
6 in
Cutting Edge Thickness
0.6 in
End Bit - Width
6 in
End Bit - Thickness
0.6 in
Blade Pull - Base GVW
20830 lb
Blade Pull - Base GVW
20830.0 lb
Blade Pull - Maximum GVW
25862 lb
Blade Pull - Maximum GVW
25862.0 lb
Blade Down Pressure - Base GVW
17566 lb
Blade Down Pressure - Base GVW
17566.0 lb
Blade Down Pressure - Maximum GVW
28254 lb
Blade Down Pressure - Max GVW
28254.0 lb

Weights

Gross Vehicle Weight - Maximum - Front Axle
15954 lb
Gross Vehicle Weight - Maximum - Front Axle
15954.0 lb
Gross Vehicle Weight - Maximum - Rear Axle
48736 lb
Gross Vehicle Weight - Maximum - Rear Axle
48736.0 lb
Gross Vehicle Weight - Base - Front Axle
9919 lb
Gross Vehicle Weight - Base - Front Axle
9919.0 lb
Gross Vehicle Weight - Base - Rear Axle
23145 lb
Gross Vehicle Weight - Base - Rear Axle
23145.0 lb
Gross Vehicle Weight - Maximum - Total
44690 lb
Gross Vehicle Weight - Maximum - Total
44690.0 lb
Gross Vehicle Weight - Base - Total
33064 lb
Gross Vehicle Weight - Base - Total
33064.0 lb

Operating Specifications

Top Speed - Forward
27.7 mile/h
Top Speed - Reverse
23.5 mile/h
Turning Radius - Outside Front Tires
24.5 ft
Steering Range - Left/Right
47.5°
Articulation Angle - Left/Right
20°
Forward - 1st
2.4 mile/h
Forward - 2nd
3.3 mile/h
Forward - 3rd
4.75 mile/h
Forward - 4th
6.5 mile/h
Forward - 5th
10.2 mile/h
Forward - 6th
13.8 mile/h
Forward - 7th
19 mile/h
Forward - 8th
27.7 mile/h
Reverse - 1st
2 mile/h
Reverse - 2nd
3.8 mile/h
Reverse - 3rd
5.6 mile/h
Reverse - 4th
8.6 mile/h
Reverse - 5th
16.1 mile/h
Reverse - 6th
23.5 mile/h

Service Refill

Fuel Capacity
90 gal (US)
Cooling System
10.4 gal (US)
Hydraulic System - Tank
16 gal (US)
Engine Oil
4.1 gal (US)
Transmission - Differential - Final Drives
13.2 gal (US)
Transmission/Differential/Final Drives
13.2 gal
Tandem Housing - Each
16.9 gal (US)
Front Wheel Spindle Bearing Housing
0.1 gal (US)
Circle Drive Housing
1.8 gal (US)

Power Train

Forward/Reverse Gears
8 Fwd / 6 Rev
Transmission
Direct drive, power shift, countershaft
Brakes - Service
Multiple oil-disc
Brakes - Service - Surface Area
3565 in²
Brakes - Service, Surface Area
3565.0 in2
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
51 gal/min
Pump Output
51.0 gal/min
Maximum System Pressure
3500 psi
Standby Pressure
450 psi
Standby Pressure
450.0 psi

Frame

Drawbar - Width
3 in
Circle - Diameter
60.2 in
Circle - Blade Beam Thickness
1.4 in
Drawbar - Height
6 in
Front Frame Structure - Thickness
0.63 in
Front Frame Structure - Height
10 in
Front Frame Structure - Thickness
0.63 in
Front Frame Structure - Width
10 in
Drawbar - Thickness
0.4 in
Drawbar - Thickness
0.4 in
Drawbar - Yoke Bar Thickness
0.75 in
Front Axle - Height to Center
22.5 in
Front Axle - Wheel Lean, Left/Right
18°
Front Axle - Wheel Lean - Left/Right
18°
Front Axle - Total Oscillation per Side
32°

Blade Range

Circle Centershift - Right
25.8 in
Circle Centershift - Left
25.8 in
Moldboard Sideshift - Right
26 in
Moldboard Sideshift - Left
20.1 in
Maximum Blade Position Angle
90°
Blade Tip Range - Forward
40°
Blade Tip Range - Backward
5°
Maximum Shoulder Reach Outside of Tires - Right
75 in
Maximum Shoulder Reach Outside of Tires - Left
68.6 in
Maximum Lift Above Ground
16.8 in
Maximum Depth of Cut
28.3 in

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
4.6 in
Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holders
5 / 11
Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum
18.4 in
Front, V-Type, 5 or 11 Tooth - Working Width
47.4 in
Mid, V-Type - Scarifier Shank Holder Spacing
4.6 in
Mid, V-Type - Scarifier Shank Holders
11
Mid, V-Type - Scarifying Depth, Maximum
11.5 in
Mid, V-Type - Working Width
46.6 in
Mid, Straight - Scarifier Shank Holder Spacing
4.4 in
Mid, Straight - Scarifier Shank Holders
17
Mid, Straight - Scarifying Depth, Maximum
12.5 in
Mid, Straight - Working Width
71 in
Rear - Scarifying Depth, Maximum
10.5 in
Mid, V-Type - Scarifier Shank Holder Spacing
4.6 in
Mid, V-Type - Scarifying Depth, Maximum
11.5 in
Mid, V-Type - Working Width
46.6 in
Rear - Scarifying Depth, Maximum
10.5 in
Rear - Working Width
91.0 in
Rear - Working Width
91 in
Rear - Scarifier Shank Holders
9
Rear - Scarifier Shank Holder Spacing
10.5 in
Rear - Scarifier Shank Holder Spacing
10.5 in

Ripper

Penetration Force
18911 lb
Pry-Out Force
25972 lb
Machine Length Increase, Beam Raised
39.2 in

Tandems

Height
19.76 in
Width
6.76 in
Sidewall Thickness - Inner
0.5 in
Sidewall Thickness - Outer
0.6 in
Drive Chain Pitch
1.8 in
Wheel Axle Spacing
59.5 in
Tandem Oscillation - Front Up
15°
Tandem Oscillation - Front Down
25°

Dimensions

Height - Top of Cab
129 in
Height - Top of Cab
129.0 in
Length - Counterweight to Ripper
389.3 in
Length - counterweight to ripper
389.3 in
Width - Outside Front Tires
97.7 in
Width - Outside Front Tires
97.7 in
Length - Front Axle to Mid Tandem
232.8 in
Length - Front Axle to Mid Tandem
232.8 in
Length - Front Tire to Rear of Machine
334.1 in
Length - Front Tire to Rear of Machine
334.1 in
Length - Front Axle to Moldboard
98.85 in
Length - Front Axle to Moldboard
98.85 in
Length - Between Tandem Axles
59.5 in
Length - Between Tandem Axles
59.5 in
Width - Outside Rear Tires
97.7 in
Width - Outside Rear Tires
97.7 in
Width - Tire Center Lines
84.1 in
Width - Tire Center Lines
84.1 in
Height - Front Axle Center
22.5 in
Height - Front Axle Center
22.5 in
Height - Exhaust Stack
112.4 in
Height to Exhaust Stack
112.4 in
Height - Top of Cylinders
113.7 in
Height to Top of Cylinders
113.7 in
Ground Clearance - Rear Axle
13.6 in
Ground Clearance at Rear Axle
13.6 in

Standard Equipment

  • Operator Environment
    • Air Conditioner with heater
    • Arm and wrist rest, adjustable
    • Articulation, automatic Return-to-Center
    • Ashtray and lighter
    • Cat Messenger, operator information system
    • Centershift pin indicator
    • Coat hook
    • Cup holder
    • Display, digital speed and gear
    • Doors, left and right side with wiper
    • Gauge cluster - articulation, engine coolant temp,
    • Gauge, machine level
    • Hour meter, digital
    • Joystick hydraulic controls
    • Ladders, cab, left and right side
    • Lights, night time cab
    • Mirror, inside rearview, wide angle
    • Power port, 12V
    • Radio Ready, Entertainment
    • ROPS cab, sound suppressed
    • Seat belt, retractable 76 mm (3 in)
    • Seat, cloth-covered, comfort suspension
    • Storage area for cooler/lunchbox
    • Throttle control, electronic
    • Windows, laminated glass:
  • Electrical
    • Alarm, back up
    • Alternator, 80 ampere, sealed
    • Batteries, maintenance free, heavy duty 1125 CCA
    • Breaker panel, ground accessible
    • Electrical system, 24V
    • Grade Control Ready - Cab harness, software,
    • Lights, reversing
    • Lights, roading, roof-mounted
    • Lights, stop and tail, LED
    • Product Link Ready
    • Starter, electric
  • Power Train
    • Air cleaner, dual stage, dry type, automatic dust ejector,
    • Air-to-air after cooler (ATAAC)
    • Belt, serpentine, automatic tensioner
    • Brakes, four-wheel hydraulic
    • Differential, lock / unlock
    • Drain, engine oil, ecology
    • Electronic over speed protection
    • Engine, Cat® C6.6 with ACERT™ Technology
    • Fuel-water separator
    • Hydraulic demand fan
    • Muffler, under hood
    • Parking brake - multi-disc, sealed, oil-cooled
    • Priming pump, fuel
    • Rear axle, modular
    • Sediment drain, fuel tank
    • Transmission, 8F/6R, power shift, direct drive
    • VHP (Variable Horsepower)
  • Other Standard Equipment
    • Brake accumulators, dual certified
    • Bumper, rear, integrated with hitch
    • CD ROM Parts Book
    • Clutch, circle drive slip
    • Cutting edges
    • Doors (3), engine compartment, locking
    • Drawbar - 6 shoe with replaceable wear strips
    • Endbits
    • Extended Life Coolant to -35° C (-30° F)
    • Fluid check, ground level
    • Frame, articulated, with safety lock
    • Fuel tank, ground level access
    • Ground level engine shutdown
    • Hammer (emergency exit)
    • Horn, electric
    • Hydraulics, base 8 implement controls
    • Hydraulics, load-sensing
    • Lockout, hydraulic implement for roading
    • Moldboard
    • Mounting, cab roof accessories
    • Paint, glare reducing - top of front frame
    • Pump, hydraulic, high capacity (98 cc/6 in3)
    • Radiator cleanout access
    • Secondary steering
    • Serviceability, LH side
    • SOSSM ports: engine, hydraulic, transmission, coolant, fuel
    • Tandem walkway/guards
    • Tool box
    • Tow hitch
  • Tires, Rims, & Wheels
    • Partial allowance for tires and multi-piece rims

Attachments

  • Electrical Kg Lb
    • Alternator, 150 ampere 2 5
    • Batteries:
    • Converter, communication (CB) 5 11
    • Lights:
  • Guards
    • covers, screen 4 9
    • debris        9    20
    • Transmission Sides/Sound
    • transmission 141 310
  • Operator Environment
    • Fan, defroster, rear window 2 4
    • Mirrors, outside:
    • Precleaner, HVAC 5 10
    • Seat, air suspension, cloth 2 5
    • Shade, sun 2 5
    • Wiper, each side 0 1
    • Wiper/washer, rear 0 1
  • Power Train
    • Engine, variable horsepower plus (VHP Plus)
    • Precleaner, Sy-Klone 9 20
    • Transmission, autoshift 2 5
  • Other Attachments Kg Lb
    • AccuGrade ARO 39 85
    • Accumulators, blade lift 77 170
    • AutoLube, Lincoln 23 50
    • AutoLube, Lincoln, ripper enhancement 5 10
    • Camera, rearview 9 20
    • Caterpillar Product Link 321SR 5 10
    • Compressor/tank, Air 23 50
    • Fenders, front, AWD 56 124
    • Fenders, rear 119 262
    • Heater, engine coolant:
    • Hydraulic arrangements with one or more additional
    • Security system 2 5
    • Snow wing mounting, frame ready 91 200
    • Starting aid, Ether .5 1
  • Work Tools / G.e.t.
    • Blade extension, 610 mm (2 ft)
    • Cutting Edges, curved 43 95
    • Endbits, overlay 24 52
    • Front lift group, mechanical 680 1500
    • Front lift group, hydraulic 680 1500
    • Grader bit, narrow and super penetration 181 400
    • Mid Mount Scarifier 939 2071
    • Moldboard
    • Push plate, counterweight 907 2000
    • Ripper, rear 962 2120
    • Ripper tooth 28 61
    • Scarifier, Tooth 69 152
  • Machine Arrangements
    • European Arrangement
    • Roading Arrangement
    • Snow Arrangement
    • Canadian Arrangement

While Michigan CAT is now MacAllister Machinery, all other aspects of our interactions with customers and vendors will not change – including our banking information, where customers remit payment, or where vendors submit invoices for payment.

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