New CAT Equipment

18 Motor Grader

Grade Mine Roads and Pair with 150-250 Tonne Haul Trucks

Cat® 18 motor grader powers through mining with high efficiency, advanced emissions control, and a wider moldboard. Ideal for haul road maintenance and mining operations, this heavy equipment cuts costs and ensures uptime with Cat durability.

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Benefits

Wide Coverage

Maximize productivity with an 18-ft moldboard for fewer passes, optimized power for smooth performance, and a high-capacity design that tackles heavy loads with ease.

Technology to Precisely Grade

Factory-installed Cat® Cross Slope automates accurate grading, integrates with Cat® MineStar for support, and adds VisionLink™ and CPM for insights to boost uptime and productivity.

Manage Your Fleet

Boost productivity with LED perimeter lighting for superior visibility, a cab sound suppression system for a quieter, safer ride, and an ergonomically designed seat offering multi-axis adjustments for all-day comfort.

Learn more about the 18 Motor Grader

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  • Air Conditioning System
    Air Conditioning
    The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system contains 2 kg (4.4 lb) of refrigerant which has a CO2 equivalent of 2.860 metric tonnes (3.152 tons).
  • Blade Range
    Blade Tip Range - Backward
    5°
    Blade Tip Range - Forward
    40°
    Circle Centershift - Left
    27.2 in
    Circle Centershift - Right
    22 in
    Maximum Blade Position Angle
    65°
    Maximum Depth of Cut
    18.5 in
    Maximum Lift Above Ground
    15.7 in
    Maximum Shoulder Reach Outside of Tires - Left
    103 in
    Maximum Shoulder Reach Outside of Tires - Right
    103 in
    Moldboard Sideshift - Left
    29.1 in
    Moldboard Sideshift - Right
    31.1 in
  • Dimensions (Approximate)
    Ground Clearance - Rear Axle
    16.7 in
    Height - Exhaust Stack
    141.1 in
    Height - Front Axle Center
    29.9 in
    Height - Top of Cab
    147.5 in
    Height - Top of Cylinders
    122.6 in
    Length - Between Tandem Axles
    72.5 in
    Length - Counterweight to Ripper
    474.4 in
    Length - Front Axle to Mid Tandem
    290 in
    Length - Front Axle to Moldboard
    120.7 in
    Length - Front Tire to Rear of Machine - Including Tow Hitch
    417 in
    Width - Outside Front Tires
    134.3 in
    Width - Outside Rear Tires
    134.3 in
    Width - Tire Center Lines
    106.4 in
  • Engine
    Base Power (1st Gear) - Net
    304 hp
    Base Power (1st Gear) - Net - Metric
    309 hp
    Bore
    5.1 in
    Derating Altitude - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
    12176 ft
    Derating Altitude - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
    12973 ft
    Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
    12500 ft
    Displacement
    763 in³
    Emissions (1)
    U.S. EPA Tier 4 Final/EU Stage V/Japan 2014 (Tier 4 Final)
    Emissions (2)
    Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent Emission Standards
    Emissions (3)
    Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards
    Engine Model
    Cat® C13
    Maximum Torque - ISO 9249 - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
    1270 lb/ft
    Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
    1270 lb/ft
    Maximum Torque - ISO 9249 - Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
    1306 lb/ft
    Number of Cylinders
    6
    Optimized VHP Range - Net
    227-266 kW (304-357 hp)
    Speed at Rated Power
    2,000 rpm
    Standard - Ambient Capability
    122 °F
    Standard - Fan Speed - Maximum
    1,450 rpm
    Standard - Fan Speed - Minimum
    550 rpm
    Stroke
    6.2 in
    Torque Rise - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
    38%
    Torque Rise - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
    38%
    Torque Rise - Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
    40%
    VHP Range - Net
    227-266 kW (304-357 hp)
    VHP Range - Net - Metric
    227-266 kW (309-362 hp)
  • Frame
    Circle - Blade Beam Thickness
    2 in
    Circle - Diameter
    71.7 in
    Drawbar - Height
    8 in
    Drawbar - Width
    3 in
    Front Axle - Height to Center
    26.4 in
    Front Axle - Total Oscillation per Side
    35°
    Front Axle - Wheel Lean
    18° Left/17° Right
    Front Frame Structure - Height
    18.1 in
    Front Frame Structure - Thickness
    0.6 in
    Front Frame Structure - Width
    14 in
  • Hydraulic System
    Circuit Type
    Electro-hydraulic load sensing, closed center
    Maximum System Pressure
    3590 psi
    Note
    *Pump output measured at 2,150 rpm.
    Pump Output*
    74 gpm
    Pump Type
    Variable piston
    Standby Pressure
    856 psi
  • Moldboard
    Arc Radius
    16.3 in
    Blade Pull* - Base GVW
    47216 lb
    Blade Pull* - Maximum GVW
    52878 lb
    Blade Width
    18 ft
    Cutting Edge Thickness
    1.4 in
    Cutting Edge Width
    10 in
    Down Force - Base GVW
    34008 lb
    Down Force - Maximum GVW
    43861 lb
    End Bit - Thickness
    0.75 in
    End Bit - Width
    6 in
    Height
    31 in
    Note
    *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.
    Thickness
    1 in
    Throat Clearance
    5 in
    Width
    18 ft
  • Operating Specifications
    Articulation Angle - Left/Right
    20°
    Forward - 1st
    2.8 mile/h
    Forward - 2nd
    3.8 mile/h
    Forward - 3rd
    5.5 mile/h
    Forward - 4th
    7.6 mile/h
    Forward - 5th
    11.8 mile/h
    Forward - 6th
    16 mile/h
    Forward - 7th
    22 mile/h
    Forward - 8th
    32.1 mile/h
    Note
    Calculated with no slip and 23.5R25 L-3 tires.
    Reverse - 1st
    2.2 mile/h
    Reverse - 2nd
    4.1 mile/h
    Reverse - 3rd
    6 mile/h
    Reverse - 4th
    9.3 mile/h
    Reverse - 5th
    17.4 mile/h
    Reverse - 6th
    25.3 mile/h
    Steering Range - Left/Right
    47.5°
    Top Speed - Forward
    32.1 mile/h
    Top Speed - Reverse
    25.3 mile/h
    Turning Radius - Outside Front Tires
    30.5 ft
  • Optional Tire Arrangements
    Wheel Group - 19.5×25 MP (1)
    Tires: 23.5R25 Bridgestone VKT 2 Star
    Wheel Group - 19.5×25 MP (2)
    Tires: 23.5R25 Bridgestone VKT 1 Star
    Wheel Group - 19.5×25 MP (3)
    Tires: 23.5R25 Bridgestone VJT 1 Star
    Wheel Group - 19.5×25 MP (4)
    Tires: 23.5R25 Michelin XHA 2 Star
    Wheel Group - 19.5×25 MP (5)
    Tires: 23.5R25 Michelin XLDD 2 Star L5
  • Power Train
    Brakes - Dynamic Brake Torque per Wheel
    27069.27 lb/ft
    Brakes - Parking
    Spring applied, hydraulically released
    Brakes - Secondary
    Oil-actuated, oil-disc
    Brakes - Service
    Oil-actuated, oil disc
    Forward/Reverse Gears
    8 Forward/6 Reverse
    Transmission
    Direct drive, power shift, countershaft
  • Ripper
    Machine Length Increase, Beam Raised
    63.4 in
    Penetration Force
    30311 lb
    Pry-Out Force
    43700 lb
    Ripper Shank Holders
    7
    Ripping Depth - Maximum
    17.8 in
    Shank Holder Spacing - Maximum
    20 in
    Shank Holder Spacing - Minimum
    17.5 in
  • Service Refill
    Circle Drive Housing
    2.6 gal (US)
    Cooling System
    18.5 gal (US)
    DEF Tank
    4.2 gal (US)
    Engine Oil
    9.5 gal (US)
    Front Wheel Spindle Bearing Housing
    0.24 gal (US)
    Fuel Capacity
    131 gal (US)
    Hydraulic System - Tank
    18.5 gal (US)
    Hydraulic System - Total
    38.6 gal (US)
    Tandem Housing - Each
    34 gal (US)
    Transmission - Differential - Final Drives
    26 gal (US)
  • Standards
    Brakes
    ISO 3450: 2011
    ROPS/FOPS
    ISO 3471: 2008/ISO 3449: 2005
    Sound
    ISO 6394: 2008/ISO 6395: 2008/ISO 6396: 2008
    Steering
    ISO 5010: 2007
  • Tandems
    Drive Chain Pitch
    2.5 in
    Height
    25.5 in
    Sidewall Thickness - Inner
    0.9 in
    Sidewall Thickness - Outer
    0.9 in
    Tandem Oscillation - Front Down
    25°
    Tandem Oscillation - Front Up
    15°
    Wheel Axle Spacing
    72.5 in
    Width
    9.3 in
  • Variable Power Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final), Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent or Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards - Metric
    Gear - Forward 1st
    309 hp
    Gear - Forward 2nd
    309 hp
    Gear - Forward 3rd
    315 hp
    Gear - Forward 4th
    325 hp
    Gear - Forward 5th
    332 hp
    Gear - Forward 6th
    341 hp
    Gear - Forward 7th
    347 hp
    Gear - Forward 8th
    362 hp
    Gear - Reverse 1st
    309 hp
    Gear - Reverse 2nd
    309 hp
    Gear - Reverse 3rd-6th
    315 hp
  • Variable Power Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final), Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent or Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards - Net
    Gear - Forward 1st
    304 hp
    Gear - Forward 2nd
    304 hp
    Gear - Forward 3rd
    311 hp
    Gear - Forward 4th
    321 hp
    Gear - Forward 5th
    327 hp
    Gear - Forward 6th
    337 hp
    Gear - Forward 7th
    342 hp
    Gear - Forward 8th
    357 hp
    Gear - Reverse 1st
    304 hp
    Gear - Reverse 2nd
    304 hp
    Gear - Reverse 3rd-6th
    311 hp
  • Weights
    Operating Weight - Typically Equipped
    74324 lb
  • Weights Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final)*
    Gross Vehicle Weight - Base** - Front Axle
    19837 lb
    Gross Vehicle Weight - Base** - Rear Axle
    52461 lb
    Gross Vehicle Weight - Base** - Total
    72298 lb
    Gross Vehicle Weight - Maximum Tested - Front Axle
    26125 lb
    Gross Vehicle Weight - Maximum Tested - Rear Axle
    58753 lb
    Gross Vehicle Weight - Maximum Tested - Total
    84877 lb
    Gross Vehicle Weight - Typically Equipped - Front Axle
    20494 lb
    Gross Vehicle Weight - Typically Equipped - Rear Axle
    53830 lb
    Gross Vehicle Weight - Typically Equipped - Total
    74324 lb
    Note (1)
    *No Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final) emission engine: subtract 150 kg (331 lb) from rear axle wt. & total wt.
    Note (2)
    **Base operating weight calculated on standard machine configuration with 23.5R25 tires, full fuel tank operator and rops cab.
NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
OPERATOR ENVIRONMENT
  • Adjustable electric arm rest
  • Adjustable wrist rest
  • Air conditioner with heater
  • Air horn
  • Articulation, automatic Return-to-Center
  • Centershift pin indicator
  • Coat hook
  • Cup holder
  • Display, digital speed and gear
  • Doors, left and right side with wiper
  • Gauges (analog) inside the cab (includes fuel, articulation, engine coolant temp, engine RPM, and hydraulic oil temp)
  • Gauges, machine level
  • Information display touch screen
  • Joystick gear selection
  • Joystick hydraulic controls for implements, steering, transmission
  • Ladders, cab, left and right side
  • Lights, left and right side lights
  • Lights, night time cab
  • Meter, hour, digital
  • Mirror, inside rearview, wide angle
  • Power port, 12V
  • Radio ready, entertainment
  • ROPS cab, sound suppressed, less than 73 dB(A) ISO 6394 (70% fan speed)
  • Seat, cloth-covered, comfort air suspension
  • Storage compartments
  • Throttle control, electronic
POWER TRAIN
  • Air cleaner, dual stage dry type radial seal with service indicator through messenger and automatic dust ejector
  • Air-to-air after cooler (ATAAC)
  • Auto Diff Lock
  • Belt, serpentine, automatic tensioner
  • Brake wear indication
  • Brakes, oil disc, four-wheel, hydraulic
  • Consistent power to ground
  • Critically Low Fluid Level Monitoring System
  • Differential, lock/unlock
  • Drain, engine oil, high speed
  • Electronic over speed protection
  • Engine ECO Mode: Tier 4 Final/Stage V/Japan 2014 (Tier 4 Final) and Tier 2/Stage II/Japan 2001 (Tier 2) equivalent emission standards
  • Engine, compression brake
  • Ether starting aid
  • Fuel tank, fast fill, ground level
  • Fuel-water separator
  • Hydraulic Demand Fan
  • Muffler, under hood (Tier 2/Stage II/Japan 2001 (Tier 2) equivalent and Tier 3/Stage IIIA/Japan 2006 (Tier 3) equivalent emission standards
  • OK-to-Start
  • Optimized VHP
  • Parking brake – multi disc, sealed, oil-cooled
  • Priming pump, fuel
  • Rear axle, modular
  • Sediment drain, fuel tank
  • Three variations of the C13 engine. One meets U.S. EPA Tier 4 Final/EU Stage IV/Japan 2014 (Tier 4 Final) emission standards and is required for sale in higher regulated countries. The other options are capable of meeting Tier 2/Stage II/Japan 2001 (Tier 2) equivalent or Tier 3/Stage IIIA/Japan 2006 (Tier 3) equivalent emission standards.
  • Transmission, 8F/6R, power shift
  • VIMS no telematics
GUARDS
  • Front axle cylinder guard
  • Transmission guard
ELECTRICAL
  • Alternator, 150 ampere, sealed
  • Batteries, maintenance free, heavy duty, 1,400 CCA
  • Breaker panel
  • Electrical system, 24V
  • Lights: brake, reversing, roof-mounted roading, stop and tail (LED), work front
  • Product Link
  • Starter, electric, heavy duty
SAFETY
  • Alarm, back up
  • Ground level engine shutdown
  • Hammer (emergency exit)
  • Horn, electric
  • Lockout, hydraulic implement for roading
  • Operator not present monitoring system
  • Paint, glare reducing – top of front frame, rear enclosure and ripper cylinders
  • Rearview camera
  • Seat belt indicator
  • Seat belt, retractable 76 mm (3 in)
  • Secondary steering
  • Windows, laminated glass: – Fixed front with intermittent wiper – Door with intermittent wipers (two)
  • Windows, tempered: – Left and right side wipers – Rear with intermittent wiper
  • Light, LED, warning strobe
  • Lights front LED
  • Lights, front headlights high
  • Lights, front headlights low
  • Mounting, for warning light
  • Service lights
  • Working lights Halogen
  • Working lights LED
OTHER STANDARD EQUIPMENT
  • 3-bolt blade bracket
  • AccuGrade ARO
  • Accumulators, blade lift
  • Brake accumulators, dual certified
  • Cat Grade Control Cross Slope
  • CD ROM Parts Book
  • Clutch, circle drive slip
  • Cutting edges, flat DH-2 steel: – 254 mm × 35 mm (10 in × 1.4 in) – 19 mm (3⁄4 in) mounting bolts
  • Doors (four), engine compartment, (two left, two right hand) locking
  • Doors, two service, left and right side
  • Drawbar – six shoe with replaceable wear strips
  • End bits, 16 mm (5⁄8 in) DH-2 steel, 19 mm (3⁄4 in) mounting bolts
  • Fast fill fuel 567.8 L/min (150 gpm)
  • Fluid check
  • Frame, articulated, with safety lock
  • Hydraulics, load-sensing
  • Metallic fuel tank, 496 L (131 gal)
  • Metallic DCM wear strips
  • Modular cooling package
  • Moldboard: – 5.5 m × 787 mm × 25 mm (18 ft × 31 in × 1 in) – Hydraulic side shift and tip
  • Radiator, two cleanout access doors
  • Rear bumper
  • Rear tandem access steps and hand bars
  • S·O·S ports: engine, hydraulic, transmission, coolant
  • Tandem walkway
  • Top adjust circle wear strips
  • Fire suppression ready
  • Ripper, rear
  • Push block, counterweight
WORK TOOLS/G.E.T.
  • 5.5 m (18 ft) blade with flat cutting edge 254 mm × 35 mm (10 in × 13⁄8 in)
TIRES, RIMS, AND WHEELS
  • A partial allowance for tires on 597 mm × 609.6 mm (23.5 in × 24 in) multi-piece rims is included in the base machine price and weight
FLUIDS
  • Extended Life Coolant to –35° C (–31° F)
NOTE
  • Standard and optional equipment may vary. Consult your Cat dealer for details.
OPERATOR ENVIRONMENT
  • Comfort package
  • Heated door
  • Mirrors high visibility
  • Mirrors, outside heated 24V
  • Mirrors, outside mounted
  • Seat heated
  • Seat heated/ventilated
  • Windows cleaning platform and ladders left-right hand side
POWER TRAIN
  • Transmission, autoshift
GUARDS
  • Debris guard
  • Rear fenders
  • Sound suppression, engine enclosure and transmission
SAFETY
  • Additional monitor for rearview camera
  • Enhanced access platform
  • Machine Security System Key
  • Service access platform
OTHER ATTACHMENTS
  • Auto-lube, Centro-matic
  • Auto-lube, ripper enhancement
  • Control, blade, variable float
  • Heater, engine coolant, 120V
  • Heater, engine coolant, 240V
  • Hydraulic arrangements with additional hydraulic valves Base+1
  • Hydraulic arrangements with additional hydraulic valves Base+5
  • Product Link Elite dual
  • Rim, 495.3 mm × 635 mm (19.5 in × 25 in) MP (spare)
  • Weather, Cold Plus package
WORK TOOLS/G.E.T.
  • 5.5 m (18 ft) blade with curved cutting edge 203 mm × 25 mm (8 in × 1 in)
  • Tooth, ripper
FLUIDS
  • Coolant, –51° C (–60° F)

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