Caterpillar 143H Motor Grader


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 - Left74.6 in (189 cm)
Max Reach Outside Tires - Right77.9 in (198 cm)
Shift Left27.4 in (70 cm)
Shift Right28.7 in (73 cm)


Blade Base8.4 ft (3 m)
Front Ground Clearance2 ft (1 m)
Height to Top of Isomount Cab10.3 ft (3 m)
Overall Length28.6 ft (9 m)
Rear Ground Clearance1.2 ft (0 m)
Tandem Axle Wheelbase5 ft (2 m)
Wheelbase20.3 ft (6 m)
Width Over Tires8.4 ft (3 m)


Displacement629 cu in (0 m)
Engine Model3176C DITA ATAAC VHP
Max Power205 hp (153 kw)
Net Power Gear 1-2165 hp (123 kw)
Net Power Gear 4-6185 hp (138 kw)
Net Power Gear 5-6185 hp (138 kw)
Net Power Gears 7-8205 hp (153 kw)

Front Axle

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

Hydraulic System

Pump Flow54.4 gal/min (206 l/min)
Pump Typeaxial piston
Relief Valve Pressure3500 psi


Blade Down Pressure30126.2 lbs (13,665 kg)
Blade Pull at Max Weight43977 lbs (19,948 kg)
Max Depth of Cut28.1 in (71 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

Circle Gearbox Fluid Capacity1.8 gal (7 l)
Cooling System Fluid Capacity10 gal (38 l)
Fuel Capacity105 gal (397 l)
Hydraulic System Fluid Capacity20.8 gal (79 l)
Max Operation Weight - Front Axle17443 lbs (7,912 kg)
Max Operation Weight - Rear Axle31420 lbs (14,252 kg)
Max Operation Weight - Total48863 lbs (22,164 kg)
Std Operation Weight - Front Axle9493 lbs (4,306 kg)
Std Operation Weight - Rear Axle24177 lbs (10,967 kg)
Std Operation Weight - Total33670 lbs (15,273 kg)
Tandem Case Fluid Capacity (each)16.9 gal (64 l)

Steering System

Articulation Angle20 °
Turning Radius24.6 ft (8 m)


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

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