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Caterpillar 12H Motor Grader

Including 12H ES, 12H NA

Circle

Blade Tip Angle - Front40 °
Blade Tip Angle - Rear5 °
Diameter60.2 in (153 cm)
Max Lift Above Ground18.9 in (48 cm)
Max Reach Outside Tires - Left73.6 in (187 cm)
Max Reach Outside Tires - Right71.2 in (181 cm)
Rotation360 °
Shift Left27.4 in (70 cm)
Shift Right28.7 in (73 cm)

Dimensions

Blade Base8.5 ft (3 m)
Front Ground Clearance2 ft (1 m)
Height to Top of Isomount Cab10.2 ft (3 m)
Overall Length28.2 ft (9 m)
Rear Ground Clearance1.2 ft (0 m)
Tandem Axle Wheelbase5 ft (2 m)
Wheelbase20 ft (6 m)
Width Over Tires8 ft (2 m)

Engine

Displacement537 cu in (0 m)
Engine ModelC-9 ETA VHP
Max Power165 hp (123 kw)
Net Power Gear 1-2145 hp (108 kw)
Net Power Gear 4-6165 hp (123 kw)
Net Power Gear 5-6165 hp (123 kw)
Net Power Gears 7-8165 hp (123 kw)
Number of Cylinders6
Power Measured @2000 rpm

Front Axle

Ground Clearance2 ft (1 m)
Oscillation - Total32 °
Wheel Lean18 °

Hydraulic System

Pump Flow51.9 gal/min (196 l/min)
Pump Typevariable piston
Relief Valve Pressure3500 psi

Moldboard

Blade Down Pressure23807.8 lbs (10,799 kg)
Blade Pull at Max Weight28867 lbs (13,094 kg)
Max Depth of Cut28.9 in (73 cm)
Moldboard Height24 in (61 cm)
Moldboard Thickness0.9 in (2 cm)
Moldboard Width12 ft (4 m)
Side Shift Left20.6 in (52 cm)
Side Shift Right26 in (66 cm)

Operating Specifications

Alternator Supplied Amperage75 A
Circle Gearbox Fluid Capacity1.8 gal (7 l)
Cooling System Fluid Capacity11.6 gal (44 l)
Fuel Capacity100 gal (379 l)
Hydraulic System Fluid Capacity19.5 gal (74 l)
Max Operation Weight - Front Axle13744 lbs (6,234 kg)
Max Operation Weight - Rear Axle32074 lbs (14,549 kg)
Max Operation Weight - Total45818 lbs (20,783 kg)
Oil System Fluid Capacity7.2 gal (27 l)
Operating Voltage24 V V
Rear Diff/Final Drive Fluid Capacity12.2 gal (46 l)
Std Operation Weight - Front Axle8346 lbs (3,786 kg)
Std Operation Weight - Rear Axle22974 lbs (10,421 kg)
Std Operation Weight - Total31320 lbs (14,207 kg)
Tandem Case Fluid Capacity (each)16.9 gal (64 l)
Tire Size14.00-24 12PR

Steering System

Articulation Angle50 °
Turning Radius24.3 ft (7 m)

Transmission

Max Speed - Forward27.4 mph (44 kph)
Max Speed - Reverse21.6 mph (35 kph)
Number of Gears - Forward8
Number of Gears - Reverse6
Transmission Typedirect drive power shift


12H ES

Circle

Max Lift Above Ground18 in (46 cm)

Dimensions

Blade Base8.5 ft (3 m)
Height to Top of Isomount Cab10.3 ft (3 m)
Overall Length28.2 ft (9 m)
Wheelbase20 ft (6 m)
Width Over Tires8.1 ft (2 m)

Engine

Displacement637.7 cu in (0 m)
Engine Model3306 DIT
Max Power140 hp (104 kw)
Net Power Gears 7-8140 hp (104 kw)

Front Axle

Oscillation - Total32 °
Wheel Lean18 °

Hydraulic System

Pump Flow54.5 gal/min (206 l/min)
Pump TypeAxial Piston
Relief Valve Pressure3500 psi

Moldboard

Moldboard Height24.1 in (61 cm)
Moldboard Thickness0.9 in (2 cm)
Moldboard Width12.1 ft (4 m)

Operating Specifications

Alternator Supplied Amperage50 A
Fuel Capacity75.1 gal (284 l)
Hydraulic System Fluid Capacity18 gal (68 l)
Operating Voltage24 V V
Std Operation Weight - Total31411.5 lbs (14,248 kg)
Tire Size12-24 10PR (G-2)

Steering System

Articulation Angle20 °
Turning Radius24.3 ft (7 m)

Transmission

Max Speed - Forward24.7 mph (40 kph)
Max Speed - Reverse19.5 mph (31 kph)
Number of Gears - Forward8
Number of Gears - Reverse6


12H NA

Circle

Max Lift Above Ground18.9 in (48 cm)

Dimensions

Blade Base8.5 ft (3 m)
Height to Top of Isomount Cab10.3 ft (3 m)
Overall Length28.2 ft (9 m)
Wheelbase20 ft (6 m)
Width Over Tires8.1 ft (2 m)

Engine

Displacement637.7 cu in (0 m)
Engine Model3306 DIT
Max Power140 hp (104 kw)
Net Power Gears 7-8140 hp (104 kw)

Front Axle

Oscillation - Total32 °
Wheel Lean18 °

Hydraulic System

Pump Flow51.8 gal/min (196 l/min)
Pump TypeAxial Piston
Relief Valve Pressure3500 psi

Moldboard

Moldboard Height24.1 in (61 cm)
Moldboard Thickness0.9 in (2 cm)
Moldboard Width12.1 ft (4 m)

Operating Specifications

Alternator Supplied Amperage35 A
Fuel Capacity75.1 gal (284 l)
Hydraulic System Fluid Capacity21.2 gal (80 l)
Operating Voltage24 V V
Std Operation Weight - Total31409.3 lbs (14,247 kg)
Tire Size13-24 10PR (G-2)

Steering System

Articulation Angle20 °
Turning Radius24.3 ft (7 m)

Transmission

Max Speed - Forward24.7 mph (40 kph)
Max Speed - Reverse19.7 mph (32 kph)
Number of Gears - Forward8
Number of Gears - Reverse6

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