18 Motor Grader

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.

Key Specs

  • Base Power (1st Gear) - Net 304 hp
  • Operating Weight - Typically Equipped 74324 lb
  • Blade Width 18 ft

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.

Engine

Base Power (1st Gear) - Net 304hp
Engine Model Cat® C13
Bore 5.1in
Stroke 6.2in
Speed at Rated Power 2,000 rpm
Optimized VHP Range - Net 227-266 kW (304-357 hp)
Standard - Ambient Capability 122°F
Base Power (1st Gear) - Net - Metric 309hp
VHP Range - Net 227-266 kW (304-357 hp)
Maximum Torque - ISO 9249 - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent 1270lb/ft
Derating Altitude - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent 12176ft
Derating Altitude - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent 12973ft
Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent 1270lb/ft
Standard - Fan Speed - Minimum 550 rpm
Emissions (1) U.S. EPA Tier 4 Final/EU Stage V/Japan 2014 (Tier 4 Final)
Torque Rise - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 40%
Maximum Torque - ISO 9249 - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 1306lb/ft
Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 12500ft
Torque Rise - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent 38%
Standard - Fan Speed - Maximum 1,450 rpm
Emissions (2) Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent Emission Standards
Torque Rise - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent 38%
VHP Range - Net - Metric 227-266 kW (309-362 hp)
Emissions (3) Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards
Displacement 763in³
Number of Cylinders 6

Weights

Operating Weight - Typically Equipped 74324lb

Moldboard

Blade Width 18ft
Arc Radius 16.3in
Throat Clearance 5in
Down Force - Maximum GVW 43861lb
Blade Pull* - Base GVW 47216lb
Blade Pull* - Maximum GVW 52878lb
End Bit - Width 6in
Down Force - Base GVW 34008lb
Cutting Edge Thickness 1.4in
Thickness 1in
Width 18ft
Cutting Edge Width 10in
End Bit - Thickness 0.75in
Height 31in
Note *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.

Service Refill

Fuel Capacity 131gal (US)
Cooling System 18.5gal (US)
Hydraulic System - Tank 18.5gal (US)
Hydraulic System - Total 38.6gal (US)
DEF Tank 4.2gal (US)
Engine Oil 9.5gal (US)
Transmission - Differential - Final Drives 26gal (US)
Tandem Housing - Each 34gal (US)
Front Wheel Spindle Bearing Housing 0.24gal (US)
Circle Drive Housing 2.6gal (US)

Power Train

Forward/Reverse Gears 8 Forward/6 Reverse
Transmission Direct drive, power shift, countershaft
Brakes - Parking Spring applied, hydraulically released
Brakes - Dynamic Brake Torque per Wheel 27069.27lb/ft
Brakes - Service Oil-actuated, oil disc
Brakes - Secondary Oil-actuated, oil-disc

Hydraulic System

Circuit Type Electro-hydraulic load sensing, closed center
Pump Type Variable piston
Maximum System Pressure 3590psi
Standby Pressure 856psi
Pump Output* 74gpm
Note *Pump output measured at 2,150 rpm.

Blade Range

Maximum Blade Position Angle 65°
Maximum Lift Above Ground 15.7in
Maximum Depth of Cut 18.5in
Maximum Shoulder Reach Outside of Tires - Right 103in
Circle Centershift - Right 22in
Maximum Shoulder Reach Outside of Tires - Left 103in
Moldboard Sideshift - Right 31.1in
Blade Tip Range - Backward
Moldboard Sideshift - Left 29.1in
Circle Centershift - Left 27.2in
Blade Tip Range - Forward 40°

Tandems

Tandem Oscillation - Front Up 15°
Tandem Oscillation - Front Down 25°
Sidewall Thickness - Outer 0.9in
Sidewall Thickness - Inner 0.9in
Height 25.5in
Width 9.3in
Drive Chain Pitch 2.5in
Wheel Axle Spacing 72.5in

Ripper

Shank Holder Spacing - Minimum 17.5in
Ripping Depth - Maximum 17.8in
Shank Holder Spacing - Maximum 20in
Ripper Shank Holders 7
Penetration Force 30311lb
Pry-Out Force 43700lb
Machine Length Increase, Beam Raised 63.4in

Weights Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final)*

Gross Vehicle Weight - Typically Equipped - Rear Axle 53830lb
Gross Vehicle Weight - Base** - Total 72298lb
Gross Vehicle Weight - Maximum Tested - Rear Axle 58753lb
Gross Vehicle Weight - Maximum Tested - Front Axle 26125lb
Gross Vehicle Weight - Typically Equipped - Front Axle 20494lb
Gross Vehicle Weight - Base** - Front Axle 19837lb
Gross Vehicle Weight - Maximum Tested - Total 84877lb
Gross Vehicle Weight - Typically Equipped - Total 74324lb
Gross Vehicle Weight - Base** - Rear Axle 52461lb
Note (2) **Base operating weight calculated on standard machine configuration with 23.5R25 tires, full fuel tank operator and rops cab.
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.

Dimensions (Approximate)

Height - Top of Cylinders 122.6in
Width - Outside Rear Tires 134.3in
Height - Exhaust Stack 141.1in
Length - Between Tandem Axles 72.5in
Length - Front Axle to Mid Tandem 290in
Width - Tire Center Lines 106.4in
Length - Front Axle to Moldboard 120.7in
Length - Counterweight to Ripper 474.4in
Height - Front Axle Center 29.9in
Width - Outside Front Tires 134.3in
Length - Front Tire to Rear of Machine - Including Tow Hitch 417in
Height - Top of Cab 147.5in
Ground Clearance - Rear Axle 16.7in

Standards

Sound ISO 6394: 2008/ISO 6395: 2008/ISO 6396: 2008
ROPS/FOPS ISO 3471: 2008/ISO 3449: 2005
Brakes ISO 3450: 2011
Steering ISO 5010: 2007

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 309hp
Gear - Forward 2nd 309hp
Gear - Reverse 2nd 309hp
Gear - Forward 4th 325hp
Gear - Forward 6th 341hp
Gear - Forward 5th 332hp
Gear - Forward 8th 362hp
Gear - Reverse 1st 309hp
Gear - Forward 3rd 315hp
Gear - Forward 7th 347hp
Gear - Reverse 3rd-6th 315hp

Optional Tire Arrangements

Wheel Group - 19.5×25 MP (2) Tires: 23.5R25 Bridgestone VKT 1 Star
Wheel Group - 19.5×25 MP (1) Tires: 23.5R25 Bridgestone VKT 2 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

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 4th 321hp
Gear - Reverse 2nd 304hp
Gear - Forward 1st 304hp
Gear - Reverse 3rd-6th 311hp
Gear - Forward 3rd 311hp
Gear - Forward 5th 327hp
Gear - Forward 7th 342hp
Gear - Forward 2nd 304hp
Gear - Reverse 1st 304hp
Gear - Forward 6th 337hp
Gear - Forward 8th 357hp

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 con

Operating Specifications

Note Calculated with no slip and 23.5R25 L-3 tires.
Forward - 6th 16mile/h
Forward - 2nd 3.8mile/h
Forward - 8th 32.1mile/h
Forward - 5th 11.8mile/h
Reverse - 3rd 6mile/h
Turning Radius - Outside Front Tires 30.5ft
Forward - 4th 7.6mile/h
Top Speed - Reverse 25.3mile/h
Forward - 7th 22mile/h
Articulation Angle - Left/Right 20°
Reverse - 1st 2.2mile/h
Forward - 3rd 5.5mile/h
Reverse - 4th 9.3mile/h
Forward - 1st 2.8mile/h
Top Speed - Forward 32.1mile/h
Reverse - 6th 25.3mile/h
Steering Range - Left/Right 47.5°
Reverse - 2nd 4.1mile/h
Reverse - 5th 17.4mile/h

Frame

Front Frame Structure - Width 14in
Front Axle - Height to Center 26.4in
Circle - Diameter 71.7in
Front Frame Structure - Thickness 0.6in
Front Frame Structure - Height 18.1in
Circle - Blade Beam Thickness 2in
Drawbar - Width 3in
Front Axle - Wheel Lean 18° Left/17° Right
Front Axle - Total Oscillation per Side 35°
Drawbar - Height 8in

BETTER COMFORT AND CONTROL

  • 18 foot moldboard and straight 10 inch by 1-3/8 inch cutting edge, allowing operators to increase coverage by 12.5% compared to a 16 foot moldboard. The operator can use a more aggressive blade angle and still be able to deposit the windrow away from the tires to protect tire life. More aggressive blade angles reduce the load on the machine and maintain better ground speed for enhanced performance.
  • Variable Horse Power (VHP) provides the ideal amount of power in all gears to efficiently perform diverse motor grader applications while protecting structure and drive train components.
  • With optimized combination of weight and balance the 18delivers enhanced traction and the ability to keep ground speed, especially when carrying a large load on the board.
  • Emissions reduction technology is transparent and automated with no action required from the operator.
  • Rear Ripper / Scarifier penetrates tough material fast for easier movement with the moldboard. Standard ripper with three shanks can add four more for additional versatility.
  • Multi-color, touch screen Information Display is the operator's gateway to monitoring machine performance and offers a convenient way of modifying machine parameters to tailor performance to the current task. Provides access to service information for initial troubleshooting.
  • Cat VisionLink is deeply integrated into the machine, helping take the guesswork out of equipment management. Easy access to timely information like machine location, hours, fuel usage, idle time and event codes via the online user interface can help effectively manage fleets and lower operating costs.
  • Manage your fleet of machines while reducing fuel burn with Cat Production Measurement System option. The Efficiency Coach and Application Segmentation work together to monitor operators and machines simultaneously. Measure your jobsite’s efficiency and productivity from anywhere on the website.

ACHIEVE GREATER PRODUCTIVITY

  • The 18 helps to reduce downtime and operating costs through improved serviceability, fuel economy and reduced maintenance. Major components are modular in design, so most can be removed and reinstalled without disturbing other components.
  • Eco mode improves fuel economy by reducing high idle engine speed while maintaining machine power. Eco mode controls the high engine idle speed (capped at 1,900 rpm in working gears) to ensure the engine is performing as efficiently as possible. Provides significant fuel savings especially in operations that typically run light to moderate loads.
  • Center shift section of the front frame is made of heavy duty steel casting which improves stress distribution to this high load area for enhanced durability.
  • The rear frame structure is lengthened to provide easy service access to components in the engine enclosure as well as improve machine balance.
  • Front axle steering cylinder has been designed to enhance durability and hydraulic hoses have been routed to improve reliability.
  • A front guard helps protect the front axle from rocks or other debris that could damage the axle or its components.
  • The transmission guard provides a steel protection from ground debris.
  • Modular cooling package makes for simple removal and installation of components on the cooling system which reduces service time.
  • Engine enclosure doors provide complete and easy access to the engine without the impediment of any enclosure post.
  • Extended maintenance intervals reduce the number of touches and downtime.
  • Ok to Start and critically low fluid monitoring systems help prevent critical components from damage when low fluid levels are present. All information is available via the Information Display within the cab, and diagnostic codes are logged.

BUILT-IN SAFETY FEATURES

  • Caterpillar considers the safety of everyone in, on, or around Cat equipment when developing new products or enhancing safety features for existing products.
  • The 18 has numerous safety features such as but not limited to
  • Access to Tandem
  • Light Emitting Diode (LED) Enclosure Service Lights
  • Seat Belt Indication
  • Fire Suppression Ready System
  • Rearview Camera
  • Optional Access Platform
  • Optional Service Access Platform

TOP-TIER SERVICE AND SUPPORT

  • Your local Cat dealer is committed to helping you succeed, by ensuring you have the right machine for the job, making parts and service readily available, offering operator training and providing you with versatile work tools.

Standard Equipment

  • 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)

Optional Equipment

  • 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)