The Caterpillar 120M Motor Grader is a versatile and powerful machine designed for efficiently leveling and grading construction sites, roads, and other surfaces. With a range of advanced features and capabilities, the 120M boasts a robust engine with a net power of 138 horsepower, ensuring high performance in various operating conditions. Equipped with an electro-hydraulic load sensing hydraulic system and a direct drive, power shift, countershaft transmission, this motor grader offers precise control and smooth operation. Its sturdy build and ergonomic design make it suitable for a wide range of grading applications, providing superior productivity and performance on the job site. Explore the detailed specifications of the Caterpillar 120M Motor Grader below to learn more about its capabilities and features.
| Blade Tip Range - Backward | 5 degrees
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| Blade Tip Range - Forward | 40 degrees
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| Circle Centershift - Left | 26 in (66 cm)
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| Circle Centershift - Right | 26 in (66 cm)
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| Maximum Blade Position Angle | 90 degrees
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| Maximum Depth of Cut | 28 in (72 cm)
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| Maximum Lift Above Ground | 17 in (43 cm)
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| Maximum Shoulder Reach Outside of Tires - Left | 69 in (174 cm)
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| Maximum Shoulder Reach Outside of Tires - Right | 75 in (190 cm)
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| Moldboard Sideshift - Left | 20 in (51 cm)
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| Moldboard Sideshift - Right | 26 in (66 cm)
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| Blade Base | 8 ft (3 m)
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| Front Ground Clearance | 2 ft (1 m)
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| Ground Clearance - Rear Axle | 14 in (35 cm)
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| Height - Exhaust Stack | 112 in (285 cm)
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| Height - Front Axle Center | 23 in (57 cm)
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| Height - Top of Cab | 11 ft (3 m)
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| Height - Top of Cylinders | 114 in (289 cm)
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| Height to Top of Isomount Cab | 11 ft (3 m)
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| Length - Between Tandem Axles | 60 in (151 cm)
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| Length - Counterweight to Ripper | 389 in (989 cm)
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| Length - Front Axle to Mid Tandem | 233 in (591 cm)
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| Length - Front Axle to Moldboard | 99 in (251 cm)
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| Length - Front Tire to Rear of Machine | 334 in (849 cm)
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| Overall Length | 28 ft (9 m)
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| Rear Ground Clearance | 1 ft (0 m)
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| Tandem Axle Wheelbase | 5 ft (2 m)
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| Wheelbase | 19 ft (6 m)
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| Width - Outside Front Tires | 98 in (248 cm)
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| Width - Outside Rear Tires | 98 in (248 cm)
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| Width - Tire Center Lines | 84 in (214 cm)
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| Width Over Tires | 8 ft (2 m)
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| Base Power (1st Gear) - Net | 138 hp (103 kw)
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| Base Power (1st Gear) - Net - Metric | 140 hp (104 kw)
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| Base Power (All Gears) - Net | 138 hp (103 kw)
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| Bore | 4 in (11 cm)
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| Derating Altitude | 11,500 ft (3,505 m)
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| Displacement | 403 cu in (6,604 cu cm)
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| Emissions | U.S. EPA Tier 3/EU Stage IIIA equivalent
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| Engine Model | Cat C6.6 ACERT
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| High - Ambient Capability | 122 degrees
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| High Ambient - Fan Speed - Maximum | 1650 rpm
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| High Ambient - Fan Speed - Minimum | 600 rpm
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| Max Power | 138 hp (103 kw)
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| Maximum Torque | 690 lbs ft (936 nm)
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| Net Power Gears 7-8 | 138 hp (103 kw)
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| Number of Cylinders | 6
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| Power Measured @ | 2000 rpm
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| Speed at Rated Power | 2000 rpm
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| Standard - Ambient Capability | 109 degrees
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| Standard - Fan Speed - Maximum | 1150 rpm
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| Standard - Fan Speed - Minimum | 600 rpm
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| Stroke | 5 in (13 cm)
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| Torque Rise - V Plus | 40%
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| V Plus Range - Net | 103-136 kW (138-182)
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| V Plus Range - Net - Metric | 103-136 kW (140-185)
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| V Range - Net | 103-114 kW (138-153)
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| Articulation Angle - Left/Right | 20 degrees
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| Circle Gearbox Fluid Capacity | 2 gal (7 l)
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| Cooling System Fluid Capacity | 10 gal (39 l)
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| Forward - 1st | 2 mph (4 kph)
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| Forward - 2nd | 3 mph (5 kph)
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| Forward - 3rd | 5 mph (8 kph)
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| Forward - 4th | 7 mph (10 kph)
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| Forward - 5th | 10 mph (16 kph)
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| Forward - 6th | 14 mph (22 kph)
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| Forward - 7th | 19 mph (31 kph)
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| Forward - 8th | 28 mph (45 kph)
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| Fuel Capacity | 90 gal (341 l)
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| Hydraulic System Fluid Capacity | 16 gal (60 l)
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| Max Operation Weight - Front Axle | 16,312 lbs (7,399 kg)
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| Max Operation Weight - Rear Axle | 28,378 lbs (12,872 kg)
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| Max Operation Weight - Total | 44,690 lbs (20,271 kg)
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| Operating Weight | 31,069 lbs (14,093 kg)
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| Rear Diff/Final Drive Fluid Capacity | 13 gal (50 l)
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| Reverse - 1st | 2
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| Reverse - 2nd | 4 mph (6 kph)
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| Reverse - 3rd | 6 mph (9 kph)
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| Reverse - 4th | 9 mph (14 kph)
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| Reverse - 5th | 16 mph (26 kph)
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| Reverse - 6th | 24 mph (38 kph)
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| Std Operation Weight - Front Axle | 8,233 lbs (3,734 kg)
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| Std Operation Weight - Rear Axle | 22,836 lbs (10,358 kg)
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| Std Operation Weight - Total | 31,069 lbs (14,093 kg)
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| Steering Range - Left/Right | 47.5 degrees
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| Tandem Case Fluid Capacity (each) | 17 gal (64 l)
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| Top Speed - Forward | 28 mph (45 kph)
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| Top Speed - Reverse | 24 mph (38 kph)
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| Turning Radius - Outside Front Tires | 25 ft (7 m)
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| Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing | 5 in (12 cm)
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| Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum | 18 in (47 cm)
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| Front, V-Type, 5 or 11 Tooth - Working Width | 47 in (120 cm)
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| Mid, Straight - Scarifier Shank Holder Spacing | 4 in (11 cm)
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| Mid, Straight - Scarifier Shank Holders | 17
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| Mid, Straight - Scarifying Depth, Maximum | 13 in (32 cm)
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| Mid, Straight - Working Width | 71 in (180 cm)
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| Mid, V-Type - Scarifier Shank Holder Spacing | 5 in (12 cm)
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| Mid, V-Type - Scarifier Shank Holders | 11
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| Mid, V-Type - Scarifying Depth, Maximum | 12 in (29 cm)
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| Mid, V-Type - Working Width | 47 in (118 cm)
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| Rear - Scarifier Shank Holder Spacing | 11 in (27 cm)
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| Rear - Scarifier Shank Holders | 9
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| Rear - Scarifying Depth, Maximum | 11 in (27 cm)
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| Rear - Working Width | 91 in (231 cm)
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| Gross Vehicle Weight - Base - Front Axle | 9,303 lbs (4,220 kg)
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| Gross Vehicle Weight - Base - Rear Axle | 26,479 lbs (12,011 kg)
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| Gross Vehicle Weight - Base - Total | 35,783 lbs (16,231 kg)
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| Gross Vehicle Weight - Maximum - Front Axle | 15,077 lbs (6,839 kg)
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| Gross Vehicle Weight - Maximum - Rear Axle | 33,523 lbs (15,206 kg)
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| Gross Vehicle Weight - Maximum - Total | 48,601 lbs (22,045 kg)
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| Gross Vehicle Weight - Typically Equipped - Front Axle | 11,221 lbs (5,090 kg)
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| Gross Vehicle Weight - Typically Equipped - Total | 40,565 lbs (18,400 kg)
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| Operating Weight - Typically Equipped | 40,565 lbs (18,400 kg)
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