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Caterpillar 143H Motor Grader Specs

The Caterpillar 143H is a motor grader designed for road construction, maintenance, and site preparation. Built for grading, leveling, ditching, and slope work, it is commonly used in highway projects, mining support, and municipal applications. The 143H features a center-mounted moldboard, articulated frame, and hydraulic controls for precise blade positioning and material control. Caterpillar designed the model for durability, operator visibility, and service access in demanding earthmoving environments. As part of the Caterpillar motor grader lineup, the 143H is recognized for its balance of grading performance, traction, and control on varied terrain and working conditions.


General Specifications

Caterpillar 143H Motor Grader General Specifications specifications
Approx. Ship Wt. 33,670.00 lbs (15,270.00 kg) - Starting 2002
Controls Hyd. - Starting 1995
Displacement 628.00 cu in (10.30 L) - Starting 2006
Displacement [NA] 638.00 cu in (10.45 L) - Starting 1998
Electrical - Std. Alternator 75 amp - Starting 2006
Electrical - Std. Alternator [NA] 50 A - Starting 1998
Electrical - Std. Battery CCA @ 0° F 1100 - Starting 2006
Electrical - Std. Battery CCA @ 0° F [NA] 950 A - Starting 1998
Electrical - System Size 24V - Starting 2001
Electrical - System Size [NA] 24 V - Starting 1998
Engine Model 3176C - Starting 2006
Engine Model [NA] 3306 DIT - Starting 1998
Front Axle/Steering - Articulation Angle 20 deg - Starting 2001
Front Axle/Steering - Articulation Angle [NA] 20 deg - Starting 1998
Front Axle/Steering - Minimum Turning Radius 295.00 in (7.50 m) - Starting 2006
Front Axle/Steering - Minimum Turning Radius [NA] 291.00 in (7.40 m) - Starting 1998
Front Axle/Steering - Oscillation Angle 32 deg - Starting 2001
Front Axle/Steering - Oscillation Angle [NA] 32 deg - Starting 1998
Front Axle/Steering - Steering Angle 50 deg - Starting 2001
Front Axle/Steering - Steering Angle [NA] 50 deg - Starting 1998
Front Axle/Steering - Wheel Lean Angle 18 deg - Starting 2001
Front Axle/Steering - Wheel Lean Angle [NA] 18 deg - Starting 1998
Front Frame Section Modulus - Max. 291.00 cu in (4,785.00 cu cm) - Starting 2001
Front Frame Section Modulus - Max. [NA] 291.00 cu in (4,785.00 cu cm) - Starting 1998
Front Frame Section Modulus - Min. 127.00 cu in (2,083.00 cu cm) - Starting 2001
Front Frame Section Modulus - Min. [NA] 127.00 cu in (2,083.00 cu cm) - Starting 1998
Fuel Tank Capacity 105.00 US gal (397.00 L) - Starting 2006
Fuel Tank Capacity [NA] 90.00 US gal (341.00 L) - Starting 1998
GENERAL DIMENSIONS - Blade Base 101.00 in (2.57 m) - Starting 2001
GENERAL DIMENSIONS - Blade Base [NA] 101.00 in (2.57 m) - Starting 1998
GENERAL DIMENSIONS - Height (stripped top) 120.00 in (3.04 m) - Starting 2001
GENERAL DIMENSIONS - Height (stripped top) [NA] 120.00 in (3.04 m) - Starting 1998
GENERAL DIMENSIONS - Height (to top of ROPS) 123.00 in (3.12 m) - Starting 2001
GENERAL DIMENSIONS - Height (to top of ROPS) [NA] 123.00 in (3.12 m) - Starting 1998
GENERAL DIMENSIONS - Lift Above Ground 18.90 in (480.00 mm) - Starting 2001
GENERAL DIMENSIONS - Lift Above Ground [NA] 18.90 in (480.00 mm) - Starting 1998
GENERAL DIMENSIONS - Overall Length 343.00 in (8.71 m) - Starting 2006
GENERAL DIMENSIONS - Overall Length With Ripper & Pushplate [NA] 394.00 in (10.01 m) - Starting 1998
GENERAL DIMENSIONS - Overall Length [NA] 339.00 in (8.60 m) - Starting 1998
GENERAL DIMENSIONS - Overall Width (at top of front tires) 101.00 in (2.55 m) - Starting 2001
GENERAL DIMENSIONS - Standard Blade: Height 24.00 in (610.00 mm) - Starting 2001
GENERAL DIMENSIONS - Standard Blade: Height [NA] 24.00 in (610.00 mm) - Starting 1998
GENERAL DIMENSIONS - Standard Blade: Length 144.00 in (3.66 m) - Starting 2001
GENERAL DIMENSIONS - Standard Blade: Length [NA] 144.00 in (3.66 m) - Starting 1998
GENERAL DIMENSIONS - Standard Blade: Thickness 0.87 in (22.00 mm) - Starting 2001
GENERAL DIMENSIONS - Standard Blade: Thickness [NA] 0.87 in (22.00 mm) - Starting 1998
GENERAL DIMENSIONS - Wheelbase 243.00 in (6.17 m) - Starting 2006
GENERAL DIMENSIONS - Wheelbase [NA] 240.00 in (6.09 m) - Starting 1998
GENERAL DIMENSIONS - With Ripper & Pushplate 397.00 in (10.10 m) - Starting 2006
Horse- power, Rated 165/205 hp - Starting 2002
Hydraulic System Capacity [NA] 25.50 US gal (98.00 L) - Starting 1998
Hydraulics: Pump Type Axial Piston - Starting 2001
Hydraulics: Pump Type [NA] Axial Piston - Starting 1998
Implement Pressure: Max. 3,500.00 psi (24,150.00 kPa) - Starting 2001
Implement Pressure: Max. [NA] 3,500.00 psi (24,150.00 kPa) - Starting 1998
Implement Pressure: Min. 450.00 psi (3,100.00 kPa) - Starting 2001
Implement Pressure: Min. [NA] 450.00 psi (3,100.00 kPa) - Starting 1998
Interior Sound Level (SAE J919) [NA] 77 dB(A) - Starting 1998
Interior Sound Level/SAE J919 77 dBA - Starting 2001
Length 343.00 in (8.71 m) - Starting 2002
Max. Pump Flow 54.40 US gpm (206.00 L/min) - Starting 2001
Max. Pump Flow [NA] 54.40 US gpm (206.00 L/min) - Starting 1998
Max. Shoulder Reach - Articulated Position 115.00 in (2.91 m) - Starting 2006
Max. Shoulder Reach - Frame Straight 78.00 in (1.97 m) - Starting 2006
Max. Shoulder Reach: § - Articulated Position 115.00 in (2.91 m) - Starting 2001
Max. Shoulder Reach: § - Frame Straight 78.00 in (1.97 m) - Starting 2001
Max. Torque Rise 30 % - Starting 2001
Max. Torque Rise [NA] 30 % - Starting 1998
Max.Torque Rise 50 % - Starting 2006
Maximum Forward Speed 27.40 mph (44.00 km/h) - Starting 2002
Maximum Reverse Speed 21.60 mph (34.70 km/h) - Starting 2002
Maximum Right Shoulder Reach (standard blade; hydraulic sideshift and tip control) - Articulated Position [NA] 115.00 in (2.91 m) - Starting 1998
Maximum Right Shoulder Reach (standard blade; hydraulic sideshift and tip control) - Frame Straight [NA] 78.00 in (1.97 m) - Starting 1998
Mold- board Length 144.00 in (3.66 m) - Starting 1995
Net Flywheel Power 165.00 hp (123.00 kW) - Starting 2001
Net Flywheel Power [NA] 165.00 hp (123.00 kW) - Starting 1998
No. Circle Support Shoes 6 - Starting 2001
No. Circle Support Shoes [NA] 6 - Starting 1998
No. of Cylinders 6 - Starting 2001
No. of Cylinders [NA] 6 - Starting 1998
No. of Speeds Forward/Reverse 8/6 - Starting 2001
No. of Speeds Forward/Reverse [NA] 8/6 - Starting 1998
Operating Weight 33,670.00 lbs (15,270.00 kg) - Starting 2006
Operating Weight [NA] 33,120.00 lbs (15,023.00 kg) - Starting 1998
Product Identification Prefix APN(U.S.) - Starting 2003
Rated Engine RPM 2000 rpm - Starting 2006
Rated Engine RPM [NA] 1900 rpm - Starting 1998
Std. Tires - Front & Rear 14.00-24 (10 PR) (G-2 - Starting 2001
Std. Tires - Front & Rear [NA] 14.00-24 (10 PR) (G-2) - Starting 1998
Std.Tires - Front & Rear 14.00-24 (10 PR) (G-2 - Starting 2006
System Capacity 25.50 US gal (98.00 L) - Starting 2001
Top Speed Forward [NA] 25.50 mph (41.10 km/h) - Starting 1998
Top Speed Reverse [NA] 20.20 mph (32.40 km/h) - Starting 1998
Top Speed: Forward 27.40 mph (44.00 km/h) - Starting 2006
Top Speed: Reverse 21.60 mph (34.70 km/h) - Starting 2006
Turning Radius 295.00 in (7.50 m) - Starting 2002
Variable Horsepower Plus: Gears 7-8 205.00 hp (153.00 kW) - Starting 2006
Variable Horsepower: Gears 4-8 185.00 hp (138.00 kW) - Starting 2006
Variable horsepower: Gears 4-8 [NA] 185.00 hp (138.00 kW) - Starting 1998
Variable horsepower: Gears 4-8 ¶ 185.00 hp (138.00 kW) - Starting 2001
Wheel- base 243.00 in (6.17 m) - Starting 2002
Width 101.00 in (2.55 m) - Starting 2002

Dimensions

Caterpillar 143H Motor Grader Dimensions specifications
Height 11.00 ft (3.35 m)
Length 33.08 ft (10.08 m)
Weight 48,863.00 lbs (22,163.91 kg)
Width 8.00 ft (2.44 m)
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