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    Categories ↠ Motor Graders ↠ Caterpillar 120M

    Caterpillar 120M Motor Grader

    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.


    See all Caterpillar 120Ms for sale

    General Specifications

    Blades

    Blade Tip Range - Backward5 degrees
    Blade Tip Range - Forward40 degrees
    Circle Centershift - Left26 in (66 cm)
    Circle Centershift - Right26 in (66 cm)
    Maximum Blade Position Angle90 degrees
    Maximum Depth of Cut28 in (72 cm)
    Maximum Lift Above Ground17 in (43 cm)
    Maximum Shoulder Reach Outside of Tires - Left69 in (174 cm)
    Maximum Shoulder Reach Outside of Tires - Right75 in (190 cm)
    Moldboard Sideshift - Left20 in (51 cm)
    Moldboard Sideshift - Right26 in (66 cm)

    Circle

    Blade Tip Angle - Front40 degrees
    Blade Tip Angle - Rear5 degrees
    Diameter60 in (153 cm)
    Max Lift Above Ground17 in (43 cm)
    Max Reach Outside Tires - Left69 in (174 cm)
    Max Reach Outside Tires - Right75 in (190 cm)
    Shift Left26 in (66 cm)
    Shift Right26 in (66 cm)

    Dimensions

    Blade Base8 ft (3 m)
    Front Ground Clearance2 ft (1 m)
    Ground Clearance - Rear Axle14 in (35 cm)
    Height - Exhaust Stack112 in (285 cm)
    Height - Front Axle Center23 in (57 cm)
    Height - Top of Cab11 ft (3 m)
    Height - Top of Cylinders114 in (289 cm)
    Height to Top of Isomount Cab11 ft (3 m)
    Length - Between Tandem Axles60 in (151 cm)
    Length - Counterweight to Ripper389 in (989 cm)
    Length - Front Axle to Mid Tandem233 in (591 cm)
    Length - Front Axle to Moldboard99 in (251 cm)
    Length - Front Tire to Rear of Machine334 in (849 cm)
    Overall Length28 ft (9 m)
    Rear Ground Clearance1 ft (0 m)
    Tandem Axle Wheelbase5 ft (2 m)
    Wheelbase19 ft (6 m)
    Width - Outside Front Tires98 in (248 cm)
    Width - Outside Rear Tires98 in (248 cm)
    Width - Tire Center Lines84 in (214 cm)
    Width Over Tires8 ft (2 m)

    Engine

    Base Power (1st Gear) - Net138 hp (103 kw)
    Base Power (1st Gear) - Net - Metric140 hp (104 kw)
    Base Power (All Gears) - Net138 hp (103 kw)
    Bore4 in (11 cm)
    Derating Altitude11,500 ft (3,505 m)
    Displacement403 cu in (6,604 cu cm)
    EmissionsU.S. EPA Tier 3/EU Stage IIIA equivalent
    Engine ModelCat C6.6 ACERT
    High - Ambient Capability122 degrees
    High Ambient - Fan Speed - Maximum1650 rpm
    High Ambient - Fan Speed - Minimum600 rpm
    Max Power138 hp (103 kw)
    Maximum Torque690 lbs ft (936 nm)
    Net Power Gears 7-8138 hp (103 kw)
    Number of Cylinders6
    Power Measured @2000 rpm
    Speed at Rated Power2000 rpm
    Standard - Ambient Capability109 degrees
    Standard - Fan Speed - Maximum1150 rpm
    Standard - Fan Speed - Minimum600 rpm
    Stroke5 in (13 cm)
    Torque Rise - V Plus40%
    V Plus Range - Net103-136 kW (138-182)
    V Plus Range - Net - Metric103-136 kW (140-185)
    V Range - Net103-114 kW (138-153)

    Frame

    Circle - Blade Beam Thickness1 in (4 cm)
    Circle - Diameter60 in (153 cm)
    Drawbar - Height6 in (15 cm)
    Drawbar - Thickness0 in (1 cm)
    Drawbar - Width3 in (8 cm)
    Front Axle - Height to Center23 in (57 cm)
    Front Axle - Total Oscillation per Side32 degrees
    Front Axle - Wheel Lean - Left/Right18 degrees
    Front Frame Structure - Height1 ft (0 m)
    Front Frame Structure - Width1 ft (0 m)

    Front Axle

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

    Hydraulic System

    Circuit TypeElectro-hydraulic load sensing closed center
    Maximum System Pressure3500 psi
    Pump Flow40 gpm (151 lpm)
    Pump Output40 gpm (151 lpm)
    Pump TypeVariable piston
    Relief Valve Pressure3500 psi
    Standby Pressure450 psi

    Moldboard

    Arc Radius16 in (41 cm)
    Blade Down Pressure28,887 lbs (13,103 kg)
    Blade Down Pressure - Base GVW16,435 lbs (7,455 kg)
    Blade Down Pressure - Maximum GVW29,125 lbs (13,211 kg)
    Blade Pull - Base GVW20,350 lbs (9,231 kg)
    Blade Pull - Maximum GVW24,218 lbs (10,985 kg)
    Blade Pull at Max Weight40,221 lbs (18,244 kg)
    Blade Width12 ft (4 m)
    Cutting Edge Thickness1 in (2 cm)
    Cutting Edge Width6 in (15 cm)
    End Bit - Thickness1 in (2 cm)
    End Bit - Width6 in (15 cm)
    Max Depth of Cut28 in (72 cm)
    Moldboard - Height24 in (61 cm)
    Moldboard - Thickness1 in (2 cm)
    Moldboard - Width12 ft (4 m)
    Moldboard Height24 in (61 cm)
    Moldboard Length12 ft (4 m)
    Moldboard Thickness1 in (2 cm)
    Moldboard Width12 ft (4 m)
    Side Shift Left20 in (51 cm)
    Side Shift Right26 in (66 cm)
    Throat Clearance5 in (13 cm)

    Operating Specifications

    Articulation Angle - Left/Right20 degrees
    Circle Gearbox Fluid Capacity2 gal (7 l)
    Cooling System Fluid Capacity10 gal (39 l)
    Forward - 1st2 mph (4 kph)
    Forward - 2nd3 mph (5 kph)
    Forward - 3rd5 mph (8 kph)
    Forward - 4th7 mph (10 kph)
    Forward - 5th10 mph (16 kph)
    Forward - 6th14 mph (22 kph)
    Forward - 7th19 mph (31 kph)
    Forward - 8th28 mph (45 kph)
    Fuel Capacity90 gal (341 l)
    Hydraulic System Fluid Capacity16 gal (60 l)
    Max Operation Weight - Front Axle16,312 lbs (7,399 kg)
    Max Operation Weight - Rear Axle28,378 lbs (12,872 kg)
    Max Operation Weight - Total44,690 lbs (20,271 kg)
    Operating Weight 31,069 lbs (14,093 kg)
    Rear Diff/Final Drive Fluid Capacity13 gal (50 l)
    Reverse - 1st2
    Reverse - 2nd4 mph (6 kph)
    Reverse - 3rd6 mph (9 kph)
    Reverse - 4th9 mph (14 kph)
    Reverse - 5th16 mph (26 kph)
    Reverse - 6th24 mph (38 kph)
    Std Operation Weight - Front Axle8,233 lbs (3,734 kg)
    Std Operation Weight - Rear Axle22,836 lbs (10,358 kg)
    Std Operation Weight - Total31,069 lbs (14,093 kg)
    Steering Range - Left/Right47.5 degrees
    Tandem Case Fluid Capacity (each)17 gal (64 l)
    Top Speed - Forward28 mph (45 kph)
    Top Speed - Reverse24 mph (38 kph)
    Turning Radius - Outside Front Tires25 ft (7 m)

    Power Train

    Brakes - ParkingMultiple oil disc
    Brakes - SecondaryDual circuit control system
    Brakes - ServiceMultiple oil-disc
    Brakes - Service - Surface Area3,565 cu in (58,420 cu cm)
    Forward/Reverse Gears8 Fwd / 6 Rev
    TransmissionDirect drive power shift countershaft

    Ripper

    Machine Length Increase, Beam Raised39 in (100 cm)
    Penetration Force17,705 lbs (8,031 kg)
    Pry-Out Force26,303 lbs (11,931 kg)
    Ripper Shank Holder Spacing21 in (53 cm)
    Ripper Shank Holders5
    Ripping Depth - Maximum17 in (43 cm)

    Scarifier

    Front, V-Type, 5 or 11 Tooth - Scarifier Shank Holder Spacing5 in (12 cm)
    Front, V-Type, 5 or 11 Tooth - Scarifying Depth, Maximum18 in (47 cm)
    Front, V-Type, 5 or 11 Tooth - Working Width47 in (120 cm)
    Mid, Straight - Scarifier Shank Holder Spacing4 in (11 cm)
    Mid, Straight - Scarifier Shank Holders17
    Mid, Straight - Scarifying Depth, Maximum13 in (32 cm)
    Mid, Straight - Working Width71 in (180 cm)
    Mid, V-Type - Scarifier Shank Holder Spacing5 in (12 cm)
    Mid, V-Type - Scarifier Shank Holders11
    Mid, V-Type - Scarifying Depth, Maximum12 in (29 cm)
    Mid, V-Type - Working Width47 in (118 cm)
    Rear - Scarifier Shank Holder Spacing11 in (27 cm)
    Rear - Scarifier Shank Holders9
    Rear - Scarifying Depth, Maximum11 in (27 cm)
    Rear - Working Width91 in (231 cm)

    Service Refill

    Circle Drive Housing2 gal (7 l)
    Cooling System9 gal (33 l)
    Engine Oil4 gal (14 l)
    Front Wheel Spindle Bearing Housing0 gal (0 l)
    Fuel Capacity90 gal (341 l)
    Hydraulic System - Tank17 gal (64 l)
    Tandem Housing - Each16 gal (59 l)
    Transmission - Differential - Final Drives17 gal (62 l)

    Standards

    BrakesISO 3450:1996
    ROPS/FOPSISO 3471:1992 / ISO 3449:1992
    SoundISO 6394:1998 / ISO 6395:1988
    SteeringISO 5010:1992

    Steering System

    Articulation Angle 20 degrees
    Turning Radius25 ft (7 m)

    Tandems

    Drive Chain Pitch2 in (5 cm)
    Height20 in (50 cm)
    Sidewall Thickness - Inner1 in (1 cm)
    Sidewall Thickness - Outer1 in (2 cm)
    Tandem Oscillation - Front Down25 degrees
    Tandem Oscillation - Front Up15 degrees
    Wheel Axle Spacing60 in (151 cm)
    Width7 in (17 cm)

    Transmission

    Max Speed - Forward28 mph (45 kph)
    Max Speed - Reverse24 mph (38 kph)
    Number of Gears - Forward8
    Number of Gears - Reverse6
    Transmission Typedirect drive power shift countershaft

    Weights

    Gross Vehicle Weight - Base - Front Axle9,303 lbs (4,220 kg)
    Gross Vehicle Weight - Base - Rear Axle26,479 lbs (12,011 kg)
    Gross Vehicle Weight - Base - Total35,783 lbs (16,231 kg)
    Gross Vehicle Weight - Maximum - Front Axle15,077 lbs (6,839 kg)
    Gross Vehicle Weight - Maximum - Rear Axle33,523 lbs (15,206 kg)
    Gross Vehicle Weight - Maximum - Total48,601 lbs (22,045 kg)
    Gross Vehicle Weight - Typically Equipped - Front Axle11,221 lbs (5,090 kg)
    Gross Vehicle Weight - Typically Equipped - Total40,565 lbs (18,400 kg)
    Operating Weight - Typically Equipped40,565 lbs (18,400 kg)


    39.95234 \\ -75.16379 \\ Philadelphia \\ PA \\ US \\ 19019