Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200
The Caterpillar 12M Motor Grader is a robust and versatile machine designed for efficient road maintenance and construction work. With a powerful Cat C6.6 ACERT VHP engine producing up to 173 horsepower, this grader offers exceptional performance in a variety of applications. Equipped with a range of blade and circle adjustments, the 12M allows for precise grading and shaping of roads, shoulders, and ditches. Its advanced hydraulic system provides excellent control and maneuverability, while the sturdy frame and construction ensure durability and reliability in challenging work environments. Explore the detailed specifications of the Caterpillar 12M Motor Grader to see how it can enhance your next project.
Blade Tip Range - Backward | 5 degrees |
Blade Tip Range - Forward | 40 degrees |
Circle Centershift - Left | 26 in (66 cm) |
Circle Centershift - Right | 26 in (66 cm) |
Maximum Blade Position Angle | 90 degrees |
Maximum Depth of Cut | 28 in (72 cm) |
Maximum Lift Above Ground | 17 in (43 cm) |
Maximum Shoulder Reach Outside of Tires - Left | 69 in (174 cm) |
Maximum Shoulder Reach Outside of Tires - Right | 75 in (190 cm) |
Moldboard Sideshift - Left | 20 in (51 cm) |
Moldboard Sideshift - Right | 26 in (66 cm) |
Blade Tip Angle - Front | 40 degrees |
Blade Tip Angle - Rear | 5 degrees |
Diameter | 60 in (153 cm) |
Max Lift Above Ground | 17 in (43 cm) |
Max Reach Outside Tires - Left | 69 in (174 cm) |
Max Reach Outside Tires - Right | 75 in (190 cm) |
Shift Left | 26 in (66 cm) |
Shift Right | 26 in (66 cm) |
Blade Base | 8 ft (3 m) |
Front Ground Clearance | 2 ft (1 m) |
Ground Clearance - Rear Axle | 14 in (35 cm) |
Height - Exhaust Stack | 112 in (285 cm) |
Height - Front Axle Center | 23 in (57 cm) |
Height - Top of Cab | 11 ft (3 m) |
Height - Top of Cylinders | 114 in (289 cm) |
Height to Top of Isomount Cab | 11 ft (3 m) |
Length - Between Tandem Axles | 60 in (151 cm) |
Length - Counterweight to Ripper | 389 in (989 cm) |
Length - Front Axle to Mid Tandem | 233 in (591 cm) |
Length - Front Axle to Moldboard | 99 in (251 cm) |
Length - Front Tire to Rear of Machine | 334 in (849 cm) |
Overall Length | 28 ft (9 m) |
Rear Ground Clearance | 1 ft (0 m) |
Tandem Axle Wheelbase | 5 ft (2 m) |
Wheelbase | 19 ft (6 m) |
Width - Outside Front Tires | 98 in (248 cm) |
Width - Outside Rear Tires | 98 in (248 cm) |
Width - Tire Center Lines | 84 in (214 cm) |
Width Over Tires | 8 ft (2 m) |
Base Power (1st Gear) - Net | 158 hp (118 kw) |
Base Power (All Gears) - Net | 158 hp (118 kw) |
Bore | 4 in (11 cm) |
Derating Altitude | 11,500 ft (3,505 m) |
Displacement | 403 cu in (6,604 cu cm) |
Engine Model | Cat C6.6 ACERT VHP |
High - Ambient Capability | 122 degrees |
Max Power | 173 hp (129 kw) |
Maximum Torque | 690 lbs ft (936 nm) |
Net Power Gear 1-2 | 163 hp (122 kw) |
Net Power Gear 4-6 | 173 hp (129 kw) |
Net Power Gear 5-6 | 173 hp (129 kw) |
Net Power Gears 7-8 | 173 hp (129 kw) |
Number of Cylinders | 6 |
Power Measured @ | 2000 rpm |
Standard - Ambient Capability | 109 degrees |
Stroke | 5 in (13 cm) |
Torque Rise - V Plus | 40% |
V Plus Range - Net | 118-144 kW (158-193) |
V Range - Net | 118 -129 kW (158-173) |
Circle - Blade Beam Thickness | 1 in (4 cm) |
Circle - Diameter | 60 in (153 cm) |
Drawbar - Height | 6 in (15 cm) |
Drawbar - Thickness | 0 in (1 cm) |
Drawbar - Width | 3 in (8 cm) |
Front Axle - Height to Center | 23 in (57 cm) |
Front Axle - Total Oscillation per Side | 32 degrees |
Front Axle - Wheel Lean - Left/Right | 18 degrees |
Front Frame Structure - Height | 1 ft (0 m) |
Front Frame Structure - Width | 1 ft (0 m) |
Ground Clearance | 2 ft (1 m) |
Oscillation - Total | 32 degrees |
Wheel Lean | 18 degrees |
Circuit Type | Electro-hydraulic closed center load sensing |
Maximum System Pressure | 3500 psi |
Pump Flow | 51 gpm (193 lpm) |
Pump Output | 51 gpm (193 lpm) |
Pump Type | Variable piston |
Relief Valve Pressure | 3500 psi |
Standby Pressure | 450 psi |
Arc Radius | 16 in (41 cm) |
Blade Down Pressure | 27,066 lbs (12,277 kg) |
Blade Down Pressure - Base GVW | 17,566 lbs (7,968 kg) |
Blade Down Pressure - Maximum GVW | 28,254 lbs (12,816 kg) |
Blade Pull - Base GVW | 20,830 lbs (9,448 kg) |
Blade Pull - Maximum GVW | 25,862 lbs (11,731 kg) |
Blade Pull at Max Weight | 26,465 lbs (12,004 kg) |
Blade Width | 12 ft (4 m) |
Cutting Edge Thickness | 1 in (2 cm) |
Cutting Edge Width | 6 in (15 cm) |
End Bit - Thickness | 1 in (2 cm) |
End Bit - Width | 6 in (15 cm) |
Max Depth of Cut | 28 in (72 cm) |
Moldboard - Height | 24 in (61 cm) |
Moldboard - Thickness | 1 in (2 cm) |
Moldboard Height | 24 in (61 cm) |
Moldboard Length | 12 ft (4 m) |
Moldboard Thickness | 1 in (2 cm) |
Moldboard Width | 12 ft (4 m) |
Side Shift Left | 20 in (51 cm) |
Side Shift Right | 26 in (66 cm) |
Throat Clearance | 5 in (12 cm) |
Articulation Angle - Left/Right | 20 degrees |
Circle Gearbox Fluid Capacity | 2 gal (7 l) |
Cooling System Fluid Capacity | 10 gal (39 l) |
Forward - 1st | 2 mph (4 kph) |
Forward - 2nd | 3 mph (5 kph) |
Forward - 3rd | 5 mph (8 kph) |
Forward - 4th | 7 mph (10 kph) |
Forward - 5th | 10 mph (16 kph) |
Forward - 6th | 14 mph (22 kph) |
Forward - 7th | 19 mph (31 kph) |
Forward - 8th | 28 mph (45 kph) |
Fuel Capacity | 90 gal (341 l) |
Hydraulic System Fluid Capacity | 16 gal (61 l) |
Max Operation Weight - Front Axle | 15,284 lbs (6,933 kg) |
Max Operation Weight - Rear Axle | 29,406 lbs (13,338 kg) |
Max Operation Weight - Total | 44,690 lbs (20,271 kg) |
Operating Weight | 32,016 lbs (14,522 kg) |
Rear Diff/Final Drive Fluid Capacity | 13 gal (50 l) |
Reverse - 1st | 2 |
Reverse - 2nd | 4 mph (6 kph) |
Reverse - 3rd | 6 mph (9 kph) |
Reverse - 4th | 9 mph (14 kph) |
Reverse - 5th | 16 mph (26 kph) |
Reverse - 6th | 24 mph (38 kph) |
Std Operation Weight - Front Axle | 8,836 lbs (4,008 kg) |
Std Operation Weight - Rear Axle | 23,180 lbs (10,514 kg) |
Std Operation Weight - Total | 32,016 lbs (14,522 kg) |
Steering Range - Left/Right | 47.5 degrees |
Tandem Case Fluid Capacity (each) | 17 gal (64 l) |
Top Speed - Forward | 28 mph (45 kph) |
Top Speed - Reverse | 24 mph (38 kph) |
Turning Radius - Outside Front Tires | 25 ft (7 m) |
Brakes - Parking | Multiple oil disc |
Brakes - Secondary | Dual circuit control system |
Brakes - Service | Multiple oil-disc |
Brakes - Service - Surface Area | 3,565 cu in (58,420 cu cm) |
Forward/Reverse Gears | 8 Fwd / 6 Rev |
Transmission | Direct drive power shift countershaft |
Machine Length Increase, Beam Raised | 39 in (100 cm) |
Penetration Force | 18,911 lbs (8,578 kg) |
Pry-Out Force | 25,972 lbs (11,781 kg) |
Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing | 5 in (12 cm) |
Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum | 18 in (47 cm) |
Front, V-Type, 5 or 11 Tooth - Working Width | 47 in (120 cm) |
Mid, Straight - Scarifier Shank Holder Spacing | 4 in (11 cm) |
Mid, Straight - Scarifier Shank Holders | 17 |
Mid, Straight - Scarifying Depth, Maximum | 13 in (32 cm) |
Mid, Straight - Working Width | 71 in (180 cm) |
Mid, V-Type - Scarifier Shank Holder Spacing | 5 in (12 cm) |
Mid, V-Type - Scarifier Shank Holders | 11 |
Mid, V-Type - Scarifying Depth, Maximum | 12 in (29 cm) |
Mid, V-Type - Working Width | 47 in (118 cm) |
Rear - Scarifier Shank Holder Spacing | 11 in (27 cm) |
Rear - Scarifier Shank Holders | 9 |
Rear - Scarifying Depth, Maximum | 11 in (27 cm) |
Rear - Working Width | 91 in (231 cm) |
Circle Drive Housing | 2 gal (7 l) |
Cooling System | 10 gal (39 l) |
Engine Oil | 4 gal (16 l) |
Front Wheel Spindle Bearing Housing | 0 gal (0 l) |
Fuel Capacity | 90 gal (341 l) |
Hydraulic System - Tank | 16 gal (61 l) |
Tandem Housing - Each | 17 gal (64 l) |
Transmission - Differential - Final Drives | 13 gal (50 l) |
Brakes | ISO 3450:1996 |
ROPS/FOPS | ISO 3471:1992 / ISO 3449:1992 |
Sound | ISO 6394:1998 / ISO 6395:1988 |
Steering | ISO 5010:1992 |
Articulation Angle | 20 degrees |
Turning Radius | 25 ft (7 m) |
Drive Chain Pitch | 2 in (5 cm) |
Height | 20 in (50 cm) |
Sidewall Thickness - Inner | 1 in (1 cm) |
Sidewall Thickness - Outer | 1 in (2 cm) |
Tandem Oscillation - Front Down | 25 degrees |
Tandem Oscillation - Front Up | 15 degrees |
Wheel Axle Spacing | 60 in (151 cm) |
Width | 7 in (17 cm) |
Max Speed - Forward | 28 mph (45 kph) |
Max Speed - Reverse | 24 mph (38 kph) |
Number of Gears - Forward | 8 |
Number of Gears - Reverse | 6 |
Transmission Type | direct drive power shift countershaft |
Gross Vehicle Weight - Base - Front Axle | 9,919 lbs (4,499 kg) |
Gross Vehicle Weight - Base - Rear Axle | 23,145 lbs (10,498 kg) |
Gross Vehicle Weight - Base - Total | 33,064 lbs (14,998 kg) |
Gross Vehicle Weight - Maximum - Front Axle | 15,954 lbs (7,237 kg) |
Gross Vehicle Weight - Maximum - Rear Axle | 48,736 lbs (22,106 kg) |
Gross Vehicle Weight - Maximum - Total | 44,690 lbs (20,271 kg) |