The Caterpillar 12H is a motor grader designed for road construction, maintenance, and site preparation. Built by Caterpillar, the 12H is part of the company's H-series graders and is commonly used for grading, ditching, shaping, and fine leveling applications. It features a front-mounted moldboard, articulated frame, and rear tandem drive for controlled blade positioning and traction. The 12H is typically equipped with a diesel engine, hydraulic controls, and an operator cab designed for visibility and precision. It is used in municipal, mining, and construction environments where accurate surface finishing and material control are required.
Circle
Caterpillar 12H Motor Grader Circle specifications
Max Lift Above Ground
18.00 in (45.72 cm)
Dimensions
Caterpillar 12H Motor Grader Dimensions specifications
Blade Base
8.44 ft (2.57 m)
Height To Top Of Isomount Cab
10.21 ft (3.11 m)
Overall Length
28.12 ft (8.57 m)
Wheelbase
19.99 ft (6.09 m)
Width Over Tires
8.01 ft (2.44 m)
Engine
Caterpillar 12H Motor Grader Engine specifications
Displacement
637.70 cu in (10,450.05 cu cm)
Engine Make
2236
Engine Model
3306 DIT
Max Power
140.00 hp (104.40 kw)
Net Power Gears 7-8
140.00 hp (104.40 kw)
Front Axle
Caterpillar 12H Motor Grader Front Axle specifications
Oscillation - Total
32 degrees
Wheel Lean
18 degrees
Hydraulic System
Caterpillar 12H Motor Grader Hydraulic System specifications
Pump Flow
54.50 gpm (206.28 lpm)
Pump Type
Axial Piston
Relief Valve Pressure
3500 psi
Moldboard
Caterpillar 12H Motor Grader Moldboard specifications
Moldboard Height
24.10 in (61.21 cm)
Moldboard Thickness
0.90 in (2.29 cm)
Moldboard Width
12.10 ft (3.69 m)
Operational
Caterpillar 12H Motor Grader Operational specifications
Alternator Supplied Amperage
35 amps
Fuel Capacity
75.10 gal (284.25 l)
Hydraulic System Fluid Capacity
21.20 gal (80.24 l)
Operating Voltage
24 V
Std Operation Weight - Total
31,409.30 lbs (14,247.04 kg)
Tire Size
12-24 10PR (G-2)
Steering
Caterpillar 12H Motor Grader Steering specifications
Articulation Angle
20 degrees
Turning Radius
24.30 ft (7.41 m)
Transmission
Caterpillar 12H Motor Grader Transmission specifications
Max Speed - Forward
24.70 mph (39.75 kph)
Max Speed - Reverse
19.70 mph (31.70 kph)
Number Of Gears - Forward
8
Number Of Gears - Reverse
6
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