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K Series Motor Graders

Cat motor graders continue their reputation for offering world-class cab and controls, advanced electronics and hydraulics, and optimum productivity... to match your needs in any application.

140K Motor Grader

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.

  • Specification Summary

  • Base Power (1st gear) – Net 128 kW
  • Gross Vehicle Weight – Typically Equipped 17510 kg
  • Blade Width 3.7 m
  • Gross Vehicle Weight: Base – total 14292 kg
  • Product Brochure

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Product Details

Engine

Base Power (1st gear) – Net 128 kW
Engine Model Cat® C7 ACERT™
VHP – gears 1-2 Net 128 kW
VHP – gear 3 Net 135 kW
VHP – gears 4-8 Net 143 kW
VHP – gears 1-2 Gross 140 kW
VHP – gear 3 Gross 147 kW
VHP – gears 4-8 Gross 155 kW
Displacement 7.2 L
Bore 105 mm
Stroke 127 mm
Speed @ rated power 2000 RPM
Number of cylinders 6
Derating altitude 3048 m
High Ambient Capability 50 ° C
VHP Range – Net 128-143 kW (171-191 hp)
Base Power (1st gear) – Net (Metric) 128 kW
Fan Speed Maximum 1925 RPM
Maximum Torque Net 996 N·m
Torque Rise 46 %

Weights

Gross Vehicle Weight – Typically Equipped 17510 kg
Gross Vehicle Weight: Base – total 14292 kg
Gross Vehicle Weight: Maximum – total 22870 kg
Gross Vehicle Weight: Typically Equipped – front axle 5053 kg
Gross Vehicle Weight: Typically Equipped – rear axle 12457 kg
Gross Vehicle Weight: Typically Equipped – total 17510 kg
Gross Vehicle Weight: Base – front axle 4172 kg
Gross Vehicle Weight: Base – rear axle 10120 kg
Gross Vehicle Weight: Maximum – front axle 8005 kg
Gross Vehicle Weight: Maximum – rear axle 14866 kg

Moldboard

Blade Width 3.7 m
Moldboard – height 610 mm
Moldboard – thickness 22 mm
Arc Radius 413 mm
Throat Clearance 120 mm
Cutting Edge – width 152 mm
Cutting Edge – thickness 16 mm
End Bit – width 152 mm
End Bit – thickness 16 mm
Blade Pull – maximum GVW 13379 kg
Down Pressure – maximum GVW 13963 kg
Blade Pull – base GVW 9108 kg
Down Pressure – base GVW 7278 kg

Weights – Typically Equipped

Operating Weight – Typically Equipped 15108 kg
Gross Vehicle Weight 17510 kg

Power Train

Forward/Reverse Gears 8 forward/6 reverse
Transmission Direct drive, Power shift
Brakes – Service Air actuated, multiple oil-disc
Brakes – Service, surface area 23948 cm2
Brakes – Parking Air actuated, multiple oil-disc
Brakes – Secondary Dual circuit

Operating Specifications

Top Speed – forward 47.3 km/h
Top Speed – reverse 37.4 km/h
Turning Radius, outside front tires 7.5 m
Steering Range – left/right 47.5 Degrees
Articulation Angle – left/right 20 Degrees
Forward – 1st 4.1 km/h
Forward – 2nd 5.5 km/h
Forward – 3rd 8 km/h
Forward – 4th 11 km/h
Forward – 5th 17.4 km/h
Forward – 6th 23.6 km/h
Forward – 7th 32.5 km/h
Forward – 8th 47.3 km/h
Reverse – 1st 3.2 km/h
Reverse – 2nd 6 km/h
Reverse – 3rd 8.7 km/h
Reverse – 4th 13.7 km/h
Reverse – 5th 25.7 km/h
Reverse – 6th 37.4 km/h

Hydraulic System

Circuit Type Load Sensing, Closed Center, Proportional Priority Pressure Compensating System
Pump Type Variable Piston
Maximum System Pressure 25500 kPa
Standby Pressure 3600 kPa
Reservoir Tank Capacity 55 L
Optional High Output Pump 210.5 L/min
Pump Output Standard Pump 159.1 L/min

Blade Range

Circle Centershift – right 728 mm
Circle Centershift – left 752 mm
Moldboard Sideshift – right 663 mm
Moldboard Sideshift – left 512 mm
Maximum Blade Position Angle 90 Degrees
Blade Tip Range – forward 40 Degrees
Blade Tip Range – backward 5 Degrees
Maximum shoulder reach outside of tires – right 1978 mm
Maximum shoulder reach outside of tires – left 1896 mm
Maximum lift above ground 480 mm
Maximum depth of cut 735 mm

Ripper

Ripping depth – maximum 462 mm
Ripper shank holders, quantity 5
Ripper shank holder spacing 533 mm
Penetration force 8694 kg
Pryout force 11673 kg
Machine length increase, beam raised 970 mm
Scarifier shank holder quantity 9

Scarifier

Mid, V-Type: Working width 1184 mm
Mid, V-Type: Scarifying depth, maximum 229 mm
Mid, V-Type: Scarifier shank holders quantity 11
Mid, V-Type: Scarifier shank holder spacing 116 mm
Rear: Working width 2300 mm
Rear: Scarifying depth, maximum 266 mm
Rear: Scarifier shank holders quantity 9
Rear: Scarifier shank holder spacing 267 mm

Gross Vehicle Weight – Maximum

Gross Vehicle Weight 22870 kg

Frame

Front axle – total oscillation 32 Degrees
Front-section modulus – maximum 4785 cm3
Front-section modulus – minimum 2083 cm3
Circle – diameter 1530 mm
Circle – blade beam thickness 35 mm
Drawbar – height 127 mm
Drawbar – width 76.2 mm
Front axle – height to center 628 mm
Front axle – wheel lean, left/right 18 Degrees
Front-top/bottom plate – width 305 mm
Front-top/bottom plate – thickness 25 mm
Front-side plates – width 242 mm
Front-side plates – thickness 12 mm
Front-linear weights – minimum 165 kg/m
Front-linear weights – maximum 213 kg/m

Tandems

Height 506 mm
Width 201 mm
Sidewall thickness – inner 16 mm
Sidewall thickness – outer 18 mm
Drive chain pitch 51 mm
Wheel axle spacing 1522 mm
Tandem oscillation – front up 15 Degrees
Tandem oscillation – front down 25 Degrees

Service Refill

Fuel Capacity 305 L
Cooling system 40 L
Engine Oil 18 L
Transmission/Differential/Final Drives 60 L
Tandem housing (each) 64 L
Front wheel spindle bearing housing 0.5 L
Circle drive housing 7 L

Dimensions

Height – ROPS Cab 3354 mm
Height – Non-ROPS Cab 3348 mm
Height – ROPS Canopy 3354 mm
Ground Clearance – Center Front Axle 626 mm
Length – Between Tandem Axles 1523 mm
Length – Front Axle to Moldboard 2598 mm
Length – Front Axle to Mid Tandem 6086 mm
Length – Front Tire to Rear of Machine 8504 mm
Length – Counterweight to Ripper 10013 mm
Ground Clearance, Trans. Case 362 mm
Height – Top of Cylinders 3049 mm
Height to Exhaust Stack 2895 mm
Width – Tire Center Lines 2065 mm
Width – Outside Rear Tires 2452 mm
Width – Outside Front Tires 2481 mm

Standards

ROPS/FOPS ISO 3471:1994/ISO 3449:2005
Steering ISO 5010:2007
Brakes ISO 3450:1996
Sound ISO 6394:2008/ISO 6396:2008

Power Train

Reliable performance

Smooth Shifting Transmission

  • Full Electronic Clutch Pressure Control ensures smooth shifting and directional changes.
  • Shift Torque Management helps to smooth gear changes without the use of the inching pedal, helping the operator to remain focused on the task at hand.
  • Load Compensation ensures consistent shift quality regardless of blade or machine load.
  • Optional Autoshift automatically shifts the transmission at optimal points for easier operation.

Oil Disc Brakes - Completely Sealed, Adjustment Free

Oil-bathed, air actuated and spring-released, located at each tandem wheel to eliminate power train braking loads and to reduce service time. The large brake surface area provides dependable braking capability and extended life before rebuild.

Front Axle with Cat Live Spindle Design

Cat sealed spindle keeps the bearings free from contaminants and lubricated in a lightweight oil to reduce owning and operating costs. A larger tapered roller bearing is outboard where the load is greater, extending bearing life.

Cat C7 Engine

Maximum power and efficiency

Power Management

The Cat C7 engine with ACERT Technology uses electronic control, precision fuel delivery and refined air management to provide outstanding performance and lower emissions. Variable Horse Power (VHP) is standard to provide more power in the higher gears. The Electronic Throttle Control provides easier, more precise and consistent throttle operation. Engine Over-Speed Protection prevents downshifting until an acceptable safe travel speed has been established.

Hydraulics

Balanced hydraulics deliver consistent, precise and responsive control

Balanced Flow, Independent Oil Supply

Hydraulic flow is proportioned to ensure all implements operate simultaneously. Independent oil supply prevents cross-contamination and provides proper oil cooling, which means less heat build-up and extended component life.

Implement Control Valves

Provide outstanding operator “feel” and predictable system response for unmatched implement control. To help maintain exact blade settings, lock valves are built into all control valves. Line relief valves are also incorporated into selected control valves to protect the cylinders from over pressurization.

Load-Sensing Hydraulics

A load sensing variable displacement pump and advanced hydraulic valves provide superior implement control and better machine performance. Continuously matching hydraulic flow and pressure to power demands creates less heat and reduces power consumption.

Consistent and Predictable Movement

The hydraulic system valves are specifically designed for each hydraulic function on the motor grader. They compensate for differences in flow requirements, based on cylinder size and the difference in surface volume between the rod end (blue) and barrel end (red) of the cylinder. The result is predictable, consistent hydraulic speeds whether extending or retracting the cylinder.

Structures/Drawbar-Circle-Moldboard

Designed for strength and durability

Frame Structure - Provides Consistency and Strength

Front frame is a continuous top and bottom plate construction. Flanged box section design removes welds from high stress areas, improving reliability and durability. The rear frame structure has two box section channels with fully welded differential case for a solid working platform. An integrated bumper ties the rear frame together into a cohesive unit to handle high stress loads.

Drawbar, Circle and Moldboard

The K Series drawbar is designed for high strength and optimum durability for any application. The circle stands up to high stress loads. Raised wear surfaces prevent circle teeth wear against the drawbar. The 64 uniformly spaced circle teeth are flame cut and heat induction hardened to resist wear, and the circle is secured to the drawbar by six support shoes for maximum support. The moldboard provides optimal curvature and large throat clearance that helps move all soil types quickly and efficiently. These features deliver excellent load distribution and minimal material buildup in the circle area while allowing large blade loads to roll freely.

Blade Lift Accumulators

This optional feature uses accumulators to help absorb impact loads to the moldboard by allowing vertical blade travel. Blade lift accumulators reduce unnecessary wear and help to avoid unintended machine movement for increased operator safety.

Work Tools and Attachments

Allows expansion of machine versatility, utilization, and performance

Moldboard Options

Standard moldboard length is 3.7 m (12 ft), with an optional 4.3 m (14 ft) moldboard available from the factory. Moldboard extensions are available to increase moldboard surface area and extend reach capability.

Ground Engaging Tools

A wide variety of cutting edges and end bits are available, all designed for maximum service life and productivity.

Rear Ripper/Scarifier

The K Series optional ripper/scarifier is made to penetrate tough material fast and rip thoroughly for easier material movement with the moldboard. The ripper includes three shanks with the ability to add two more if needed. Nine scarifier shanks can also be added for additional versatility.

Front Mounted Groups

A front mounted push plate/counterweight or front blade can be ordered.

Mid-Mount Scarifier

Positioned between the front axle and the circle to break up tough material that the blade can then move, all in a single pass. The V-type scarifier can accommodate up to 11 teeth.

Snow Removal Work Tools

Includes snow wings, angle blades, and V-plows. Multiple mounting options are available, increasing machine versatility. (Availability may differ by region.)

Operator Station

Caterpillar sets the standard for comfort, convenience and visibility

Designed for Productivity

K Series cabs are designed to keep operators comfortable, relaxed and productive. Features like low effort pedals and controls, adjustable implement controls and adjustable steering wheel angle help make work easier on the operator. A clear view to the moldboard heel and tandem tires enhance productivity and safe operation. Rocker switches and transmission shifter are backlit for night time operation.

In-dash Instrument Cluster

The instrument panel, with easy-to read, high-visibility gauges and warning lamps, places vital machine information and diagnostic capability in easy view of the operator. The dash includes an engine coolant temperature gauge, an articulation gauge, voltage gauge and fuel level gauge. Service brake air pressure gauges are also standard. Speedometer and tachometer are optional. All major systems are monitored by warning lights.

Additional Cab Features

Additional cab features include storage area, an adjustable control console and coat hook. Optional offerings include power port, air conditioner/heater, suspension seat, defroster fan, sun shade, backup lights, Product Link™ ready, and AccuGrade™ System ready. NOTE: Some attachments are not available in all regions.

Integrated Technologies

Solutions to make work easier and more efficient

Cat AccuGrade

AccuGrade uses positioning and guidance technologies, machine sensors, and automatic blade control to help operators get to grade faster, easier and more efficiently. Digital design plans, real-time cut/fill data, and in-cab guidance give operators detailed information to work more confidently and achieve greater accuracy, in fewer passes, using less material. Operators can stay on grade and improve productivity and accuracy by nearly 50 percent over conventional methods. Grade stakes and checkers are minimized, making the work site safe, efficient, and cost effective. AccuGrade technologies include Cross Slope, Sonic, Laser, GPS, and/or Universal Total Station (UTS).

AccuGrade Attachment Ready Option (ARO)

K Series machines can be equipped with the AccuGrade ARO. It can be ordered as a factory or dealer installed option. The attachment option includes built-in mounting points and internal wiring, making installation of the AccuGrade grade control system faster and easier.

Cat Product Link

Product Link helps take the guesswork out of equipment management with remote monitoring capabilities for your machine or your entire fleet. Track asset location, hours, fuel usage, diagnostic codes, idle time and more through the secure VisionLink™ user interface. Knowing where your equipment is, what it’s doing and how it’s performing enables you or your Cat dealer to manage your fleet in real-time so you can maximize efficiency, improve productivity, and lower operating costs.

Safety

Designed with safety in mind

ROPS/FOPS Cab Offers Low Sound and Vibration Levels

The operator sound pressure level for the cab offered by Caterpillar, when properly installed, maintained and tested with the doors closed, meets or exceeds requirements set forth in ISO 6394:2008. The quiet environment helps improve operator working conditions.

Brake Systems and Machine Protection

Brakes located at each tandem wheel offer the largest total brake surface area in the industry, delivering dependable stopping power and longer brake life. Standard circle drive slip clutch protects the drawbar, circle and moldboard from shock loads when the blade encounters an immovable object. Blade lift accumulators help absorb impact loads to the moldboard by allowing vertical blade travel.

Electrical Disconnect Switch and Engine Shutoff Switch

Disconnect switch provides ground-level lockout of the electrical system to prevent inadvertent machine starts. Engine shutoff allows anyone nearby to shut the machine down in case of an emergency.

Additional Safety Features

Laminated glass on the front windows and lockable doors to reduce theft and vandalism are available with the optional cab. Brake lights, conveniently located grab rails, back up lights and alarm also help ensure a safe work environment.

Complete Customer Support

When uptime counts

Renowned Cat Dealer Support

From helping you choose the right machine to financing and ongoing support, your Cat dealer provides the best in sales and service. Manage your costs with preventive maintenance programs like S•O•SSM fluids analysis, coolant sampling and guaranteed maintenance contracts. Stay productive with best-in-class parts availability. Your Cat dealer can help you boost your profits with operator training. And when it’s time for component replacement, your Cat dealer can help you save even more. Genuine Cat Remanufactured parts carry the same warranty and reliability as new products at savings of 40 to 70 percent for power train and hydraulic components.

Sustainability

Thinking generations ahead

  • Integrated machine systems and technologies improve productivity for greater accuracy, lower fuel use and reduced machine wear.
  • Replaceable wear parts save maintenance time and cost, and extend major component life.
  • Ecology drains help make draining fluids more convenient and help prevent spills.
  • Major components are built to be rebuilt, eliminating waste and saving customers money by giving the machine and/or major components a second - and even third life.
  • A variety of safety features help safeguard operators and others on the job site.

Serviceability

Convenient service points make routine maintenance quick and easy

Grouped Service Points on the left side to help ensure proper maintenance

Easy access to service areas speeds up maintenance and ensures that routine service is performed on time. Ecology drains shorten service times and help prevent spills. Radiator cleanout access gives the operator the ability to clear away debris and other materials that build up around the radiator.

Extended Service Intervals Reduce Downtime, Operating Cost

  • 500 hour engine oil changes
  • 4,000 hour hydraulic oil changes
  • 12,000 hour engine coolant changes

Diagnostics and Machine Monitoring

The dash cluster panel provides enhanced machine information and diagnostic capability, which allows faster servicing of the transmission and engine.

O-Ring Face Seals

O-Ring face seals create a reliable connection and are used in all hydraulic circuits to minimize the possibility of oil leaks.

Separate Wiring Harnesses

Modular harness design provides simple disconnects for major machine repairs or rebuilds which reduces machine downtime.

Cat Electronic Technician

Cat Electronic Technician is a two-way communication tool that gives service technicians easy access to stored diagnostic data, reducing machine downtime and lowering operating costs.
  • ELECTRICAL
    •  Alternator, 115 Ampere
    •  Backup alarm, reversing lights
    •  Batteries, maintenance free 750 CCA
    •  Electrical system, 24 volt
    •  Horn, electric
    •  Lights, stop and tail
    •  Motor, starting
    •  Product Link Ready
    •  Working lights
  • OPERATOR ENVIRONMENT
    •  Accelerator
    •  Control console, adjustable
    •  Gauge cluster (includes voltmeter, articulation, engine coolant temperature, air brake pressure and fuel level)
    •  Guard rails, operator station
    •  Hydraulic controls, load sensing (right/left blade lift, circle drive, centershift, sideshift, front wheel lean and articulation)
    •  Indicator lights (includes high beam, LH and RH turn, low engine oil pressure, throttle lock, check engine, transmission filter bypass and check, centershift pin, brake air pressure, parking brake engaged, auto shift)
    •  Key start/stop switch
    •  Meter, hour
    •  Power steering, hydraulic
    •  Seat, vinyl-covered static
    •  Seat belt
    •  Steering wheel, tilt, adjustable
    •  Storage area, cooler/lunch box
    •  Throttle, electronic control
  • POWER TRAIN
    •  Air cleaner, dry type radial seal with service indicator and automatic dust ejector
    •  Air to air after cooler (ATAAC)
    •  Blower fan
    •  Brakes, oil disc, four-wheel air actuated
    •  Differential with lock/unlock
    •  Engine, Cat C7 with ACERT Technology, diesel with automatic engine derate and idle control. Meets non-current U.S. EPA Tier 2 and EU Stage II emission standards.
    •  Fuel water separator
    •  Muffler, under hood
    •  Parking brake, multi-disc, sealed and oil cooled
    •  Prescreener
    •  Priming pump, fuel, resiliently mounted
    •  Sediment drain, fuel tank
    •  Tandem drive
    •  Transmission, 8 speed forward and 6 speed reverse, power shift, direct drive with electronic shift control and overspeed protection
    •  VHP (Variable Horse Power)
  • OTHER STANDARD EQUIPMENT
    •  Bumper, rear
    •  CD ROM Parts Book
    •  Circle drive slip clutch
    •  Cutting edges, 152 mm × 16 mm (6 in × 5/8 in) curved DH-2 steel
    •  Doors, Engine compartment
    •  Drawbar, 6 shoe replaceable nylon composite wear strips
    •  Endbits, 16 mm (5/8 in) DH-2 steel
    •  Frame, articulated with safety lock
    •  Fuel tank, 305 L (80.6 gal)
    •  Ground level engine shutdown
    •  Link bar, 7 position
    •  Moldboard, 3658 mm × 610 mm × 22 mm (12 ft × 24 in × 7/8 in) blade with hydraulic sideshift and mechanical tip
    •  S·O·S ports, engine, hydraulic, transmission and cooling
    •  Toolbox with padlock
    •  Vandalism protection - including cap locks for hydraulic tank, radiator access cover, fuel tank, engine and transmission oil check/fill and lockable battery boxes.
  • ANTIFREEZE
    •  Extended Life Coolant to -35° C (-30° F)
  • GUARDS
    •  Guard, transmission
  • OPERATOR ENVIRONMENT
    •  Air conditioner with heater
    •  Heater, cab
  • Air conditioner with heater
    • Heater, cab
      • CAB/CANOPY
        •  Cab, ROPS*
        •  Cab, Non-ROPS*
        •  Canopy, ROPS*
        •  Seat, vinyl adjustable
        •  Seat, cloth, contour
        •  Fan, defroster, front window
        •  Fan, defroster, rear window
        •  Sun shade, rear
        •  Wiper/washer, rear
        •  Wipers, intermittent front
        •  Mirrors, dual inside
        •  Mirrors, outside mounted
        •  Power port, 12V accessory
        •  Radio ready entertainment
        •  Tachometer/Speedometer
        •  * Weights represent changes to Typically Equipped machine weights.
      • RIPPER/SCARIFIER
        •  Ripper/Scarifier, rear mounted*
        •  Scarifier, mid mounted, V-type
      • Ripper/Scarifier, rear mounted*
        • Scarifier, mid mounted, V-type
          • LIGHTS
            •  Bar mounted, low, directional and headlights
            •  Cab and bar mounted, high, directional, headlights and work lights
          • POWER TRAIN
            •  Autoshift
          • Autoshift
            • OTHER ATTACHMENTS
              •  Product Link
              •  Snow Wing Mounting, frame-ready
              •  AccuGrade ARO
              •  Dryer, air
              •  Push plate, counterweight*
              •  Accumulator, blade lift
              •  Battery, extreme duty (1400 CCA)
              •  Ether, starting aid
              •  Heater, engine coolant, 220V
            • HYDRAULICS
              •  Pump, hydraulic, high capacity (210 L/min 55.7 gal/min)
              •  Hydraulic arrangements with one or more additional hydraulic valves are available for rear ripper, mid-mount scarifier, dozer, snow plow and snow wing.
            • BLADES, MOLDBOARDS
              •  Moldboard: Blade, 4267 mm × 610 mm × 22 mm (14' × 24" × 7/8")
              •  Blade, front
              •  Cutting edge, 203 mm × 19 mm (8" × 3/4"). For use with 14' blade
              •  Endbits, overlay, reversible pair for use with 203 mm (8") cutting edges
            • Moldboard: Blade, 4267 mm × 610 mm × 22 mm (14' × 24" × 7/8")
              • Blade, front
                • Cutting edge, 203 mm × 19 mm (8" × 3/4"). For use with 14' blade
                  • Endbits, overlay, reversible pair for use with 203 mm (8") cutting edges
                    Built for it