Categories ↠ Motor Graders ↠ Caterpillar 12G

Caterpillar 12G Motor Grader

Category: Motor Graders ➔
Manufacturer: Caterpillar ➔
Model: 12G ➔

The Caterpillar 12G is a motor grader used for road construction, maintenance, and surface finishing. Built by Caterpillar, the 12G is part of the company's G-series grader line and is known for its mechanical drivetrain, articulated frame, and moldboard control system. It is commonly used for grading gravel roads, shaping shoulders, ditching, and fine leveling on construction and mining sites. The 12G typically features a diesel engine, rear-wheel drive, and a centrally mounted blade for precise material movement. As a used equipment model, the Caterpillar 12G remains recognized for durability, serviceability, and broad application in earthmoving operations.

See all Caterpillar 12Gs for sale

Circle

Blade Tip Angle - Front	90 degrees
Blade Tip Angle - Rear	90 degrees
Diameter	60 in (153 cm)
Max Lift Above Ground	17 in (44 cm)
Max Reach Outside Tires - Left	72 in (183 cm)
Max Reach Outside Tires - Right	74 in (187 cm)
Rotation	360 degrees

Dimensions

Blade Base	9 ft (3 m)
Height to Top of Isomount Cab	11 ft (3 m)
Overall Length	27 ft (8 m)
Tandem Axle Wheelbase	5 ft (2 m)
Wheelbase	20 ft (6 m)
Width Over Tires	8 ft (2 m)

Engine

Displacement	641 cu in (10,501 cu cm)
Max Power	135 hp (101 kw)
Net Power Gear 5-6	135 hp (101 kw)
Number of Cylinders	6
Power Measured @	2200 rpm

Front Axle

Ground Clearance	2 ft (1 m)
Oscillation - Total	32 degrees
Wheel Lean	18 degrees

Hydraulic System

Pump Flow	51 gpm (193 lpm)
Pump Type	closed-center constant-pressure system w/ variable displacement piston
Relief Valve Pressure	2150 psi

Moldboard

Max Depth of Cut	18 in (45 cm)
Moldboard Height	24 in (61 cm)
Moldboard Thickness	1 in (2 cm)
Moldboard Width	12 ft (4 m)
Side Shift Left	26 in (67 cm)
Side Shift Right	21 in (52 cm)

Operating Specifications

Alternator Supplied Amperage	19 amps
Cooling System Fluid Capacity	13 gal (47 l)
Fuel Capacity	75 gal (283 l)
Hydraulic System Fluid Capacity	20 gal (76 l)
Max Operation Weight - Front Axle	9,987 lbs (4,530 kg)
Max Operation Weight - Rear Axle	21,605 lbs (9,800 kg)
Max Operation Weight - Total	31,592 lbs (14,330 kg)
Oil System Fluid Capacity	8 gal (29 l)
Operating Voltage	24 volts
Std Operation Weight - Front Axle	7,871 lbs (3,570 kg)
Std Operation Weight - Rear Axle	20,128 lbs (9,130 kg)
Std Operation Weight - Total	27,999 lbs (12,700 kg)
Tandem Case Fluid Capacity (each)	17 gal (64 l)
Transmission Fluid Capacity	23 gal (87 l)

Steering System

Articulation Angle	50 degrees
Turning Radius	24 ft (7 m)

Transmission

Max Speed - Forward	26 mph (41 kph)
Max Speed - Reverse	26 mph (41 kph)
Number of Gears - Forward	6
Number of Gears - Reverse	6
Transmission Type	Cat-built direct drive power shift

Caterpillar 12Gs currently for sale

A 1989 Caterpillar 12G From Clark Heavy Equipment for $49,900.00 USD

A 1985 Caterpillar 12G From Ideal Tractor, Inc. for $48,500.00 USD

A 1990 Caterpillar 12G From Ritchie Bros. Auctioneers for Auction Pricing

A 1974 Caterpillar 12G From Ritchie Bros. Auctioneers for Auction Pricing

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