- Overall Length: 27.27 ft / 8310 mm
- Width Over Tires: 7.91 ft / 2410 mm
- Wheelbase: 19.43 ft / 5920 mm
- Tandem Axle Wheelbase: 4.99 ft / 1520 mm
Published dimensions and weight
Caterpillar 12G
The Caterpillar 12G is a motor grader powered by a 135 hp engine.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Std Operation Weight - Total27998.8 lb12700 kg
03Selected published values52
Motor graders are commonly used to shape, level and maintain roads, pads and drainage surfaces. Published rows for Caterpillar 12G include published moldboard width of 12 ft / 3650 mm, published maximum power of 135 hp / 100.7 kw, published operating weight of 27998.8 lb / 12700 kg. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Overall Length” field (27.27 ft / 8310 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Width Over Tires” field (7.91 ft / 2410 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Wheelbase” field (19.43 ft / 5920 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Dimensions
Overall Length27.27 ft8310 mm
Width Over Tires7.91 ft2410 mm
Wheelbase19.43 ft5920 mm
Tandem Axle Wheelbase4.99 ft1520 mm
Blade Base8.44 ft2570 mm
Height To Top Of Isomount Cab10.93 ft3330 mm
Engine
Number Of Cylinders66
Engine Make22362236
Power Measured @2200 rpm2200 rpm
Net Power Gear 5-6135 hp100.7 kw
Max Power135 hp100.7 kw
Displacement640.8 cu in10.5 L
Operational
Std Operation Weight - Front Axle7870.6 lb3570 kg
Std Operation Weight - Rear Axle20128.3 lb9130 kg
Hydraulic System Fluid Capacity20.1 gal76 L
Std Operation Weight - Total27998.8 lb12700 kg
Max Operation Weight - Front Axle9987 lb4530 kg
Max Operation Weight - Rear Axle21605.4 lb9800 kg
Max Operation Weight - Total31592.3 lb14330 kg
Oil System Fluid Capacity7.7 gal29 L
Fuel Capacity74.8 gal283 L
Cooling System Fluid Capacity12.5 gal47 L
Transmission Fluid Capacity23 gal87 L
Tandem Case Fluid Capacity (Each)17 gal64 L
Operating Voltage24 V24 V
Alternator Supplied Amperage19 amps19 amps
Steering
Articulation Angle50 degrees50 degrees
Turning Radius24 ft7.4 m
Transmission
Transmission TypeCat-built direct drive power shiftCat-built direct drive power shift
Number Of Gears - Forward66
Number Of Gears - Reverse66
Max Speed - Forward25.5 mph41 km/h
Max Speed - Reverse25.5 mph41 km/h
Front Axle
Wheel Lean18 degrees18 degrees
Oscillation - Total32 degrees32 degrees
Ground Clearance2.1 ft610 mm
Moldboard
Moldboard Width12 ft3650 mm
Moldboard Height24.1 in610 mm
Moldboard Thickness0.9 in22 mm
Max Depth Of Cut17.8 in450 mm
Side Shift Left26.4 in670 mm
Side Shift Right20.5 in520 mm
Hydraulic System
Pump Typeclosed-center, constant-pressure system w/ variable displacement pistonclosed-center, constant-pressure system w/ variable displacement piston
Pump Flow51 gal/min193 L/min
Relief Valve Pressure2150 psi14823.8 kPa
Circle
Diameter60.3 in1530 mm
Rotation360 degrees360 degrees
Max Reach Outside Tires - Left72.1 in1830 mm
Max Reach Outside Tires - Right73.7 in1870 mm
Max Lift Above Ground17.3 in438 mm
Blade Tip Angle - Front90 degrees90 degrees
Blade Tip Angle - Rear90 degrees90 degrees
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Manufacturer-published specifications.