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.
Base Power (1st Gear) - Net 304 hp
Operating Weight - Typically Equipped 74324 lb
Blade Width 18 ft
Engine Model Cat® C13
Base Power (1st Gear) - Net 304hp
Base Power (1st Gear) - Net - Metric 309hp
Bore 5.1in
Derating Altitude - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent 12176ft
Derating Altitude - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent 12973ft
Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 12500ft
Displacement 763in³
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 1270lb/ft
Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent 1270lb/ft
Maximum Torque - ISO 9249 - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 1306lb/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 6.2in
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)
Operating Weight - Typically Equipped 74324lb
Arc Radius 16.3in
Blade Pull* - Base GVW 47216lb
Blade Pull* - Maximum GVW 52878lb
Blade Width 18ft
Cutting Edge Thickness 1.4in
Cutting Edge Width 10in
Down Force - Base GVW 34008lb
Down Force - Maximum GVW 43861lb
End Bit - Thickness 0.75in
End Bit - Width 6in
Height 31in
Note *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.
Thickness 1in
Throat Clearance 5in
Width 18ft
Circle Drive Housing 2.6gal (US)
Cooling System 18.5gal (US)
DEF Tank 4.2gal (US)
Engine Oil 9.5gal (US)
Front Wheel Spindle Bearing Housing 0.24gal (US)
Fuel Capacity 131gal (US)
Hydraulic System - Tank 18.5gal (US)
Hydraulic System - Total 38.6gal (US)
Tandem Housing - Each 34gal (US)
Transmission - Differential - Final Drives 26gal (US)
Brakes - Dynamic Brake Torque per Wheel 27069.27lb/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
Circuit Type Electro-hydraulic load sensing, closed center
Maximum System Pressure 3590psi
Note *Pump output measured at 2,150 rpm.
Pump Output* 74gpm
Pump Type Variable piston
Standby Pressure 856psi
Blade Tip Range - Backward 5°
Blade Tip Range - Forward 40°
Circle Centershift - Left 27.2in
Circle Centershift - Right 22in
Maximum Blade Position Angle 65°
Maximum Depth of Cut 18.5in
Maximum Lift Above Ground 15.7in
Maximum Shoulder Reach Outside of Tires - Left 103in
Maximum Shoulder Reach Outside of Tires - Right 103in
Moldboard Sideshift - Left 29.1in
Moldboard Sideshift - Right 31.1in
Articulation Angle - Left/Right 20°
Forward - 1st 2.8mile/h
Forward - 2nd 3.8mile/h
Forward - 3rd 5.5mile/h
Forward - 4th 7.6mile/h
Forward - 5th 11.8mile/h
Forward - 6th 16mile/h
Forward - 7th 22mile/h
Forward - 8th 32.1mile/h
Note Calculated with no slip and 23.5R25 L-3 tires.
Reverse - 1st 2.2mile/h
Reverse - 2nd 4.1mile/h
Reverse - 3rd 6mile/h
Reverse - 4th 9.3mile/h
Reverse - 5th 17.4mile/h
Reverse - 6th 25.3mile/h
Steering Range - Left/Right 47.5°
Top Speed - Forward 32.1mile/h
Top Speed - Reverse 25.3mile/h
Turning Radius - Outside Front Tires 30.5ft
Circle - Blade Beam Thickness 2in
Circle - Diameter 71.7in
Drawbar - Height 8in
Drawbar - Width 3in
Front Axle - Height to Center 26.4in
Front Axle - Total Oscillation per Side 35°
Front Axle - Wheel Lean 18° Left/17° Right
Front Frame Structure - Height 18.1in
Front Frame Structure - Thickness 0.6in
Front Frame Structure - Width 14in
Drive Chain Pitch 2.5in
Height 25.5in
Sidewall Thickness - Inner 0.9in
Sidewall Thickness - Outer 0.9in
Tandem Oscillation - Front Down 25°
Tandem Oscillation - Front Up 15°
Wheel Axle Spacing 72.5in
Width 9.3in
Machine Length Increase, Beam Raised 63.4in
Penetration Force 30311lb
Pry-Out Force 43700lb
Ripper Shank Holders 7
Ripping Depth - Maximum 17.8in
Shank Holder Spacing - Maximum 20in
Shank Holder Spacing - Minimum 17.5in
Gross Vehicle Weight - Base** - Front Axle 19837lb
Gross Vehicle Weight - Base** - Rear Axle 52461lb
Gross Vehicle Weight - Base** - Total 72298lb
Gross Vehicle Weight - Maximum Tested - Front Axle 26125lb
Gross Vehicle Weight - Maximum Tested - Rear Axle 58753lb
Gross Vehicle Weight - Maximum Tested - Total 84877lb
Gross Vehicle Weight - Typically Equipped - Front Axle 20494lb
Gross Vehicle Weight - Typically Equipped - Rear Axle 53830lb
Gross Vehicle Weight - Typically Equipped - Total 74324lb
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.
Ground Clearance - Rear Axle 16.7in
Height - Exhaust Stack 141.1in
Height - Front Axle Center 29.9in
Height - Top of Cab 147.5in
Height - Top of Cylinders 122.6in
Length - Between Tandem Axles 72.5in
Length - Counterweight to Ripper 474.4in
Length - Front Axle to Mid Tandem 290in
Length - Front Axle to Moldboard 120.7in
Length - Front Tire to Rear of Machine - Including Tow Hitch 417in
Width - Outside Front Tires 134.3in
Width - Outside Rear Tires 134.3in
Width - Tire Center Lines 106.4in
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
Gear - Forward 1st 309hp
Gear - Forward 2nd 309hp
Gear - Forward 3rd 315hp
Gear - Forward 4th 325hp
Gear - Forward 5th 332hp
Gear - Forward 6th 341hp
Gear - Forward 7th 347hp
Gear - Forward 8th 362hp
Gear - Reverse 1st 309hp
Gear - Reverse 2nd 309hp
Gear - Reverse 3rd-6th 315hp
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
Gear - Forward 1st 304hp
Gear - Forward 2nd 304hp
Gear - Forward 3rd 311hp
Gear - Forward 4th 321hp
Gear - Forward 5th 327hp
Gear - Forward 6th 337hp
Gear - Forward 7th 342hp
Gear - Forward 8th 357hp
Gear - Reverse 1st 304hp
Gear - Reverse 2nd 304hp
Gear - Reverse 3rd-6th 311hp
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 con
Standard and optional equipment may vary. Consult your Cat dealer for details.
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
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
Front axle cylinder guard
Transmission guard
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
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
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
5.5 m (18 ft) blade with flat cutting edge 254 mm × 35 mm (10 in × 13⁄8 in)
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
Extended Life Coolant to –35° C (–31° F)
Standard and optional equipment may vary. Consult your Cat dealer for details.
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
Transmission, autoshift
Debris guard
Rear fenders
Sound suppression, engine enclosure and transmission
Additional monitor for rearview camera
Enhanced access platform
Machine Security System Key
Service access platform
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
5.5 m (18 ft) blade with curved cutting edge 203 mm × 25 mm (8 in × 1 in)
Tooth, ripper
Coolant, –51° C (–60° F)
