Caterpillar 12M Motor Grader

Weights
Blade Pull At Max Weight

26465 lb

Max Operation Weight - Total

44690 lb

Std Operation Weight - Total

32016 lb

Platform
Articulation Angle

20 degrees

Articulation Angle - Left/Right

20 degrees

Shanks
Rear - Scarifier Shank Holders

9

Ripper
Circle - Blade Beam Thickness

1.4 in

Blade
Blade Base

8.24 ft in

Blade Down Pressure

27066.2 lb

Blade Down Pressure - Base Gvw

17566 lb

Blade Pull - Base Gvw

20830 lb

Blade Pull - Maximum Gvw

25862 lb

Blade Tip Angle - Front

40 degrees

Blade Tip Angle - Rear

5 degrees

Blade Tip Range Backward

5 degrees

Blade Tip Range Forward

40 degrees

Blade Width

12 ft in

Maximum Blade Position Angle

90 degrees

Cutting Edge Thickness

0.6 in

Cutting Edge Width

6 in

Engine & Fuel System
Engine Make

2236

Engine Model

Cat C6.6 ACERT VHP

Engine Oil

4.1 gal

Fuel Capacity

90 gal

Maximum Torque

690 lb ft

Torque Rise - Vhp Plus

40%

Net Power Gear 1-2

163 hp

Net Power Gear 4-6

173 hp

Net Power Gear 5-6

173 hp

Net Power Gears 7-8

173 hp

Number Of Cylinders

6

Power Measured @

2000 rpm

Cooling System

10.4 gal

Cooling System Fluid Capacity

10.4 gal

Displacement

403 cu in

Max Power

173 hp

Standard - Fan Speed - Maximum

1,150 rpm

Standard - Fan Speed - Minimum

550 RPM

Drive System
Brakes

ISO 3450:1996

Brakes - Parking

Multiple Oil Disc

Brakes - Secondary

Dual circuit control system

Brakes - Service

Multiple Oil Disc

Brakes - Service - Surface Area

3565 in2

Drawbar - Height

6 in

Drawbar - Thickness

0.4 in

Drawbar - Width

3 in

Drawbar - Yoke Bar Thickness

0.8 in

Steering

ISO 5010:1992

Steering Range - Left/Right

47.5 degrees

Hydraulic System
Hydraulic System Tank

16 gal

Pump Flow

51 gal/min

Pump Type

Variable piston

Relief Valve Pressure

3500 psi

Pump Output

51 gal/min

Maximum System Pressure

3500 psi

Dimensions, Wheels & Tires
Max Reach Outside Tires - Left

68.6 in

Max Reach Outside Tires - Right

75 in

Tandem Axle Wheelbase

4.96 ft in

Wheelbase

19.4 ft in

Width - Outside Front Tires

97.7 in

Width - Outside Rear Tires

97.7 in

Width Over Tires

8.14 ft in

Width - Tire Center Lines

84.1 in

Front Ground Clearance

1.87 ft in

Ground Clearance

1.9 ft in

Ground Clearance - Rear Axle

13.6 in

Rear Ground Clearance

1.13 ft in

Throat Clearance

4.9 in

Turning Radius

24.5 ft in

Overall Length

27.85 ft in

Front Axle - Height To Center

22.5 in

Height To Top Of Isomount Cab

10.75 ft in

Wheel Axle Spacing

59.5 in

Width

6.8 in

Height

19.8 in

Rops/Fops

ISO 3471:1992 / ISO 3449:1992

Transmission
Circle Gearbox Fluid Capacity

1.8 gal

Transmission

Direct drive, power shift, countershaft

Transmission Type

direct drive, power shift, countershaft

Max Speed - Forward

27.7 mph

Max Speed - Reverse

23.5 mph

Number Of Gears - Forward

8

Number Of Gears - Reverse

6

Speed At Rated Power

2000 RPM

Top Speed - Forward

27.7 mph

Top Speed - Reverse

23.5 mph

Forward - 1st

2.4 mph

Forward - 2nd

3.3 mph

Forward - 3rd

4.8 mph

Forward - 4th

6.5 mph

Forward - 5th

10.2 mph

Forward - 6th

13.8 mph

Forward - 7th

19 mph

Forward - 8th

27.7 mph

Forward/Reverse Gears

8 Fwd/6 Rev

Reverse - 1st

2 mph

Reverse - 2nd

3.8 mph

Reverse - 3rd

5.6 mph

Reverse - 4th

8.6 mph

Reverse - 5th

16.1 mph

Reverse - 6th

23.5 mph

Technical Specs
Length - Between Tandem Axles

59.5 in

Height - Top Of Cylinders

113.7 in

Height - Top Of Cab

10.75 ft in

Height - Front Axle Center

22.5 in

Height - Exhaust Stack

112.4 in

Pry-Out Force

25972 lb

Penetration Force

18911 lb

Front Frame Structure - Height

0.9 ft in

Front Frame Structure - Width

0.9 ft in

Bore

4.2 in

Stroke

5 in

Derating Altitude

11500 ft in

Base Power (1st Gear) - Net

158 hp

High - Ambient Capability

122 degrees

Vhp Plus Range - Net

118-144 kW (158-193 hp)

Circle - Diameter

60.2 in

Base Power (All Gears) - Net

158 hp

Standard - Ambient Capability

109 degrees

Vhp Range - Net

118 -129 kW (158-173 hp)

Wheel Lean

18 degrees

Oscillation - Total

32 degrees

Standby Pressure

450 psi

Moldboard Width

12 ft in

Max Depth Of Cut

28.3 in

Side Shift Left

20.1 in

Side Shift Right

26 in

Circuit Type

Electro-hydraulic closed center, load sensing,

Arc Radius

16.3 in

End Bit - Width

6 in

End Bit - Thickness

0.6 in

Moldboard Height

24 in

Moldboard Thickness

0.9 in

Diameter

60.2 in

Shift Left

25.8 in

Shift Right

25.8 in

Max Lift Above Ground

16.8 in

Sound

ISO 6394:1998 / ISO 6395:1988

Tandem Housing - Each

16.9 gal

Circle Drive Housing

1.8 gal

Circle Centershift - Right

25.8 in

Circle Centershift - Left

25.8 in

Moldboard Sideshift - Right

26 in

Moldboard Sideshift - Left

20.1 in

Maximum Lift Above Ground

16.8 in

Maximum Depth Of Cut

28.3 in

Mid, V-Type - Working Width

46.6 in

Rear - Working Width

91 in

Rear - Scarifying Depth, Maximum

10.5 in

Mid, Straight - Working Width

71 in

Sidewall Thickness - Inner

0.5 in

Sidewall Thickness - Outer

0.6 in

Drive Chain Pitch

1.8 in

Tandem Oscillation - Front Up

15 degrees

Tandem Oscillation - Front Down

25 degrees