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Motor Graders

120K

Overview

The K Series Motor Grader is the machine you can count on when you need to get work done. Cat motor graders help you make the most of your investment by delivering maximum productivity and durability. The Cat C7 engine, direct-drive power shift transmission and load sensing hydraulics work together to ensure the power and precision you need to work in demanding conditions. And Cat motor graders are backed by the world-class Cat dealer network to keep you up and running.

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    • Scarifier
      Mid, V-Type - Scarifier Shank Holder Spacing 116 mm
      Mid, V-Type - Scarifier Shank Holders Quantity 11
      Mid, V-Type - Scarifying Depth, Maximum 229 mm
      Mid, V-Type - Working Width 1184 mm
      Note (1) The mid-mount scarifier is positioned under the drawbar between the moldboard and front axle.
    • Tandems
      Drive Chain Pitch 44.5 mm
      Height 438 mm
      Sidewall Thickness - Inner 1 mm
      Sidewall Thickness - Outer 16 mm
      Tandem Oscillation - Front Down 25 °
      Tandem Oscillation - Front Up 15 °
      Wheel Axle Spacing 1510 mm
      Width 172 mm
    • Service Refill
      Circle Drive Housing 7 l
      Cooling System 40 l
      Engine Oil 18 l
      Front Wheel Spindle Bearing Housing 0.5 l
      Fuel Capacity 305 l
      Tandem Housing - Each 49 l
      Transmission - Differential - Final Drives 48 l
    • Dimensions
      Ground Clearance - Center Front Axle 602 mm
      Ground Clearance - Trans. Case 341 mm
      Height - Exhaust Stack 2865 mm
      Height - Non-ROPS Cab 3321 mm
      Height - ROPS Cab 3326 mm
      Height - ROPS/Canopy 3326 mm
      Height - Top of Cylinders 2885 mm
      Length - Between Tandem Axles 1510 mm
      Length - Counterweight to Ripper 9769 mm
      Length - Front Axle to Mid Tandem 5870 mm
      Length - Front Axle to Moldboard 2598 mm
      Length - Front Tire to Rear of Machine 8265 mm
      Width - Outside Front Tires 2449 mm
      Width - Outside Rear Tires 2439 mm
      Width - Tire Center Lines 2056 mm
    • Ripper
      Machine Length Increase, Beam Raised 1058 mm
      Note (1) Ripper tow package.
      Penetration Force 4083 kg
      Pry-Out Force 2108 kg
      Ripper Shank Holder Spacing 533 mm
      Ripper Shank Holders, Quantity 5
      Ripping Depth - Maximum 262 mm
    • Frame
      Circle - Blade Beam Thickness 30 mm
      Circle - Diameter 1530 mm
      Drawbar - Height 127 mm
      Drawbar - Width 76.2 mm
      Front Axle - Height to Center 615 mm
      Front Axle - Total Oscillation per Side 32 °
      Front Axle - Wheel Lean - Left/Right 18 °
      Front-Linear Weights - Maximum 172 kg/m
      Front-Linear Weights - Minimum 134 kg/m
      Front-Section Modulus - Maximum 3681 cm³
      Front-Section Modulus - Minimum 1619 cm³
      Front-Side Plates - Thickness 10 mm
      Front-Side Plates - Width 236 mm
      Front-Top/Bottom Plate - Thickness 22 mm
      Front-Top/Bottom Plate - Width 280 mm
    • Gross Vehicle Weight - Maximum
      Gross Vehicle Weight 17000 kg
    • Standards
      Brakes ISO 3450:1996
      Note (1) These standards are met when the machine is equipped with a cab.
      Note (2) The static operator sound pressure level is 77 dB(A) when “ISO 6394:2008” is used to measure the value for an enclosed cab. The measurement was conducted with the cab doors and the cab windows closed. The cab was properly installed and maintained.
      ROPS/FOPS ISO 3471:1994/ISO 3449:2005
      Sound ISO 6394:2008/ISO 6396:2008
      Steering ISO 5010:2007
    • Engine
      Base Power (1st Gear) - Net 93 kW
      Base Power (1st Gear) - Net - Metric 93 kW
      Bore 105 mm
      Derating Altitude 3048 m
      Displacement 7.2 l
      Engine Model Cat® C7 ACERT™
      Fan Speed Maximum 1575 r/min
      High - Ambient Capability 50 °C
      Maximum Torque - Net 774 N·m
      Note (1) Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 standards in effect at the time of manufacture.
      Note (2) Net power advertised is the power available at rated speed of 2,000 rpm, measured at the flywheel when engine is equipped with fan, air cleaner, muffler and alternator.
      Note (3) Maximum torque measured at 1,000 rpm in gears 4-8.
      Number of Cylinders 6
      Speed at Rated Power 2000 r/min
      Stroke 127 mm
      Torque Rise 50 %
      VHP - Gear 3, Gross 110 kW
      VHP - Gear 3, Net 101 kW
      VHP - Gears 1-2, Gross 103 kW
      VHP - Gears 1-2, Net 93 kW
      VHP - Gears 4-8, Gross 118 kW
      VHP - Gears 4-8, Net 108 kW
      VHP Range - Net 93-108 kW (125-145 hp)
    • Hydraulic System
      Circuit Type Load Sensing, Closed Center, PPPC
      Maximum System Pressure 25500 kPa
      Note (1) Pump output measured at 2,150 rpm.
      Optional High Output Pump 210.5 l/min
      Pump Output - Standard Pump 159.1 l/min
      Pump Type Variable Piston
      Reservoir Tank Capacity 24.5 l
      Standby Pressure 3600 kPa
    • Power Train
      Brakes - Parking Air actuated, multiple oil-disc
      Brakes - Secondary Dual Circuit
      Brakes - Service Air actuated, multiple oil-disc
      Brakes - Service - Surface Area 18606 cm²
      Forward/Reverse Gears 8 forward/6 reverse
      Note (1) Brakes meet the following standards: SAE J/ISO 3450 JAN98.
      Transmission Direct drive, Powershift
    • Weights
      Gross Vehicle Weight - Base - Front Axle 3120 kg
      Gross Vehicle Weight - Base - Rear Axle 9013 kg
      Gross Vehicle Weight - Base - Total 12133 kg
      Gross Vehicle Weight - Maximum - Front Axle 5197 kg
      Gross Vehicle Weight - Maximum - Rear Axle 11803 kg
      Gross Vehicle Weight - Maximum - Total 17000 kg
      Gross Vehicle Weight - Typically Equipped 13843 kg
      Gross Vehicle Weight - Typically Equipped - Front Axle 3970 kg
      Gross Vehicle Weight - Typically Equipped - Rear Axle 9873 kg
      Gross Vehicle Weight - Typically Equipped - Total 13843 kg
      Note (1) Base weight calculated on standard machine configuration with 13.00-24 12PR (G-2) tires, SP rims, full fuel tank, coolant, lubricants and 90 kg (198 lb) operator.
      Note (2) Typical operating weight calculated on standard machine configuration with HVAC ROPS cab, 13.00-24 12PR (G-2) tires, MP rims, MMS, hydraulic tip, full fuel tank, coolant, lubricants and 90 kg (198 lb) operator.
    • Blade Range
      Blade Tip Range - Backward 5 °
      Blade Tip Range - Forward 40 °
      Circle Centershift - Left 658 mm
      Circle Centershift - Right 656 mm
      Maximum Blade Position Angle 90 °
      Maximum Digging Depth 775 mm
      Maximum Lift Above Ground 410 mm
      Maximum Shoulder Reach Outside of Tires - Left 1764 mm
      Maximum Shoulder Reach Outside of Tires - Right 1928 mm
      Moldboard Sideshift - Left 512 mm
      Moldboard Sideshift - Right 663 mm
    • Moldboard
      Arc Radius 413 mm
      Blade Pull - Base GVW 8112 kg
      Blade Pull - Maximum GVW 10623 kg
      Blade Width 3.7 m
      Cutting Edge Thickness 16 mm
      Cutting Edge Width 152 mm
      Down Pressure - Base GVW 5594 kg
      Down Pressure - Maximum GVW 9317 kg
      End Bit - Thickness 16 mm
      End Bit - Width 152 mm
      Moldboard - Height 610 mm
      Moldboard - Thickness 22 mm
      Note (1) Blade Pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Vehicle Weight (GVW).
      Throat Clearance 58 mm
    • Weights - Typically Equipped
      Gross Vehicle Weight 13843 kg
      Operating Weight - Typically Equipped 30519 kg
    • Operating Specifications
      Articulation Angle - Left/Right 20 °
      Forward - 1st 4.1 km/h
      Forward - 2nd 5.5 km/h
      Forward - 3rd 8 km/h
      Forward - 4th 11.1 km/h
      Forward - 5th 17.5 km/h
      Forward - 6th 23.7 km/h
      Forward - 7th 32.7 km/h
      Forward - 8th 47.5 km/h
      Note (1) Maximum travel speeds calculated at high idle on standard machine configuration with 14.00-24 12PR (G-2) tires.
      Reverse - 1st 3.2 km/h
      Reverse - 2nd 6 km/h
      Reverse - 3rd 8.7 km/h
      Reverse - 4th 13.8 km/h
      Reverse - 5th 25.8 km/h
      Reverse - 6th 37.5 km/h
      Steering Range - Left/Right 47.5 °
      Top Speed - Forward 47.5 km/h
      Top Speed - Reverse 37.5 km/h
      Turning Radius - Outside Front Tires 7.3 m

    Product Downloads

    K Series Motor Graders Product Brochure

    120K Key Features and Benefits

    120K Key Features and Benefits

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