The Cat® 140K 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 ACERT™ engine, direct-drive power shift transmission and load sensing hydraulics work together ensuring you have the power and precision you need when you need it.

Base Power (1st Gear) - Net 171 HP 128 kW
Gross Vehicle Weight - Typically Equipped 38076 lb 17271 kg
Blade Width 12 ft 3.7 m

Technicial Specifications

Base Power (1st Gear) - Net 171 HP 128 kW
Engine Model Cat C7 Cat C7
Displacement 439 in³ 7.2 l
Bore 4.1 in 105 mm
Stroke 5 in 127 mm
High - Ambient Capability 122 °F 50 °C
Derating Altitude 10000 ft 3048 m
Number of Cylinders 6 6
Maximum Torque 735 ft-lb 996 N·m
Torque Rise 46% 46%
Note (1) Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 standards in effect at the time of manufacture. Net power is tested per ISO 9249, SAE J1349, and EEC 80/1269 standards in effect at the time of manufacture.
VHP Range - Net 128-143 kW (171-191 hp) 128-143 kW (171-191 hp)
Note (3) Maximum torque measured at 1,000 rpm in gears 4-8. Maximum torque measured at 1,000 rpm in gears 4-8.
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. 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.
Gross Vehicle Weight - Typically Equipped 38076 lb 17271 kg
Gross Vehicle Weight - Typically Equipped - Rear Axle 27193 lb 12335 kg
Gross Vehicle Weight - Typically Equipped - Front Axle 10883 lb 4936 kg
Gross Vehicle Weight - Base - Total 32518 lb 14750 kg
Gross Vehicle Weight - Base - Rear Axle 23128 lb 10491 kg
Gross Vehicle Weight - Base - Front Axle 9390 lb 4259 kg
Gross Vehicle Weight - Typically Equipped - Total 38076 lb 17271 kg
Blade Width 12 ft 3.7 m
Arc Radius 16.3 in 413 mm
Throat Clearance 4.7 in 120 mm
End Bit - Width 6 in 152 mm
Cutting Edge Width 6 in 152 mm
End Bit - Thickness 0.6 in 16 mm
Cutting Edge Thickness 0.6 in 16 mm
Moldboard - Height 24 in 610 mm
Moldboard - Thickness 0.9 in 22 mm
Blade Range
Moldboard Sideshift - Left 20.2 in 512 mm
Circle Centershift - Left 29.6 in 752 mm
Moldboard Sideshift - Right 26.1 in 663 mm
Circle Centershift - Right 28.7 in 728 mm
Maximum Lift Above Ground 18.9 in 480 mm
Maximum Shoulder Reach Outside of Tires - Left 74.6 in 1896 mm
Blade Tip Range - Forward 40° 40°
Maximum Shoulder Reach Outside of Tires - Right 77.9 in 1978 mm
Maximum Depth of Cut 28.9 in 735 mm
Blade Tip Range - Backward
Circle - Outer Diameter 60.2 in 1530 mm
Front Axle - Wheel Lean - Left/Right 18° 18°
Front Axle - Total Oscillation per Side 32° 32°

Advantages and Features


  • Cat C7 engine meets U.S. EPA Tier 3/EU Stage IIIA equivalent or Tier 2/Stage II equivalent emissions standards, depending on emission standards of specific country.
  • Power Shift Countershaft Transmission matched to engine, maximizing power to the ground.


  • Electronic Throttle Control helps improve productivity by optimizing HP and torque to match the power demands of the application.
  • Aggressive blade angles, optimized moldboard curvature and large throat clearance allows material to roll more freely along blade, increasing efficiency.
  • Hydraulic demand fan automatically adjusts speed according to cooling requirements maximizing power to the ground and improving fuel efficiency.
  • Engine Idle Shutdown is available to shut down engine after a set period of time, saving fuel and helping reduce emissions.


  • Proportional Priority Pressure-Compensating (PPPC) provides load-sensing hydraulics with superior control, enhanced performance, and efficiency.
  • Optional AutoShift Transmission improves ease of operation and maximizes productivity by automatically shifting the transmission at optimal shift points.
  • Rocker and control switches are in easy reach.
  • Proven conventional controls provide industry-standard control pattern and feel for precise cutting edge movement.


  • Durable nylon composite wear inserts maximize circle torque and component life.
  • Sacrificial brass moldboard slide rail wear strips between blade mounting group and moldboard can be easily adjusted and replaced.
  • Left-side, ground level service area access speeds up maintenance and ensures that routine service is performed on time.


  • Utilizing rigorous component design and machine validation processes results in unmatched reliability, durability and high uptime.
  • Components are designed and manufactured to Caterpillar quality standards throughout all Caterpillar facilities.


  • Optional HVAC, defroster fan and sun shades keep you comfortable, while conveniently placed power ports keep additional communication devices charged and ready.


  • Optional Cat AccuGrade™ uses positioning and guidance technologies, machine sensors, and automatic blade control to help get to grade faster, easier, and more efficiently.
  • Optional Cat Product Link™ aids your equipment management with remote monitoring capabilities.
  • AccuGrade Attachment Ready Option (ARO) can be ordered as a factory or dealer installed option making installation of the AccuGrade grade control system faster and easier.


  • Brakes located at each tandem wheel offer the largest total brake surface area in the industry, delivering dependable stopping power.
  • Standard circle drive slip clutch protects the drawbar, circle and moldboard from shock loads when the blade encounters an immovable object.
  • Ground level engine shutoff allows anyone nearby to shut the machine down in case of an emergency.
  • Built-in lock check valves
  • Clear view to moldboard heel and tandem tires enhance productivity and safe operation.
  • Blade Lift Accumulators help absorb impact loads to the moldboard by allowing vertical blade travel.

Standard Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Electrical
    • Alternator, 115 ampere
    • Backup alarm, reversing lights
    • Batteries, maintenance free 750 CCA
    • Common fuse block
    • Electrical system, 24 volt
    • Horn, electric
    • Indication display
    • 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
    • Eco mode
    • Engine idle shutdown
    • Engine, Cat C7 diesel with automatic engine derate and idle control - emits equivalent to Tier 3/Stage IIIA
    • Fuel water separator
    • Muffler, under hood
    • Next gen filter design
    • 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
    • Blade Float
    • Bumper, rear
    • CD ROM Parts Book
    • Circle drive slip clutch
    • Cutting edges, 152 mm x 16 mm (6 in x 5/8 in) curved DH-2 steel
    • Doors, engine compartment
    • Drawbar, 6 shoe, replaceble nylon composite wear strips
    • End bits, 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
    • SOS ports, engine, hydraulic, transmission and cooling
    • Toolbox with padlock
    • Vandlism 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 degrees Celcius (-30 degrees Fahrenheit)

Optional Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Guards
    • Guard, transmission
  • Operator Environment
    • 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
    • Mirror, heated
    • Mirrors, outside mounted
    • Power port, 12V accessory
    • Radio, Bluetooth
    • Radio ready entertainment
    • Rear vision camera
    • Tachometer/speedometer
  • Ripper/Scarifier
    • Ripper/scarifier, rear mounted
    • Scarifier, mid mounted, V-Type
  • Lights
    • Bar mounted, low, directional and headlights
    • Beacon light
    • Combination headlight
    • Cab and bar mounted, high, directional, headlights and work lights
    • Rear facing cab lights
  • Power Train
    • Autoshift
  • Other Attachments
    • Cross Slope Indicate
    • Product Link
    • Product Link Elite
    • Snow Wing Mounting, frame-ready
    • AccuGrade ARO
    • Dryer, air
    • Push plate, counterweight
    • Accumulator, blade lift
    • Battery, extreme duty (1,400 CCA)
    • Ether, starting aid
    • Heater, engine coolant, 220V
    • Circle Saver
    • Ripper tow package
  • 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 x 610 mm x 22 mm (14' x 24" x 7/8")
    • Moldboard, top adjust drawbar, circle
    • Blade, front
    • Cutting edge, 203 mm x 19 mm (8" x 3/4") - for use with 4.3 m (14') blade
    • End bits, overlay, reversible pair for use with 203 mm (8") cutting edges