Overview
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.
Specifications
Units:
| Base Power (1st Gear) - Net | — |
| Operating Weight - Typically Equipped | — |
| Blade Width | — |
Benefits & Features
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
January 30, 2026
Specifications
Units:
| Base Power (1st Gear) - Net | — |
| Engine Model | Cat® C13 |
| Bore | — |
| Stroke | — |
| Speed at Rated Power | 2,000 rpm |
| Standard - Ambient Capability | — |
| Base Power (1st Gear) - Net - Metric | — |
| VHP Range - Net | 227-266 kW (304-357 hp) |
| Maximum Torque - ISO 9249 - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent | — |
| Derating Altitude - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent | — |
| Derating Altitude - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent | — |
| Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent | — |
| 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) | — |
| Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) | — |
| 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 |
| Optimized VHP Range - Net | 227-266 kW (304-357 hp) |
| Displacement | — |
| Number of Cylinders | 6 |
| Operating Weight - Typically Equipped | — |
| 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 | — |
| Brakes - Service | Oil-actuated, oil disc |
| Brakes - Secondary | Oil-actuated, oil-disc |
| Blade Width | — |
| Arc Radius | — |
| Throat Clearance | — |
| Down Force - Maximum GVW | — |
| Blade Pull* - Base GVW | — |
| Blade Pull* - Maximum GVW | — |
| End Bit - Width | — |
| Down Force - Base GVW | — |
| Cutting Edge Thickness | — |
| Thickness | — |
| Width | — |
| Cutting Edge Width | — |
| End Bit - Thickness | — |
| Height | — |
| Note | *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight. |
| Circuit Type | Electro-hydraulic load sensing, closed center |
| Pump Type | Variable piston |
| Maximum System Pressure | — |
| Standby Pressure | — |
| Pump Output* | — |
| Note | *Pump output measured at 2,150 rpm. |
| Forward - 6th | — |
| Forward - 2nd | — |
| Forward - 8th | — |
| Forward - 5th | — |
| Reverse - 3rd | — |
| Turning Radius - Outside Front Tires | — |
| Forward - 4th | — |
| Top Speed - Reverse | — |
| Forward - 7th | — |
| Articulation Angle - Left/Right | 20° |
| Reverse - 1st | — |
| Forward - 3rd | — |
| Reverse - 4th | — |
| Forward - 1st | — |
| Top Speed - Forward | — |
| Reverse - 6th | — |
| Steering Range - Left/Right | 47.5° |
| Reverse - 2nd | — |
| Reverse - 5th | — |
| Note | Calculated with no slip and 23.5R25 L-3 tires. |
| Fuel Capacity | — |
| Cooling System | — |
| Hydraulic System - Tank | — |
| Hydraulic System - Total | — |
| DEF Tank | — |
| Engine Oil | — |
| Transmission - Differential - Final Drives | — |
| Tandem Housing - Each | — |
| Front Wheel Spindle Bearing Housing | — |
| Circle Drive Housing | — |
| Front Frame Structure - Width | — |
| Front Axle - Height to Center | — |
| Circle - Diameter | — |
| Front Frame Structure - Thickness | — |
| Front Frame Structure - Height | — |
| Circle - Blade Beam Thickness | — |
| Drawbar - Width | — |
| Front Axle - Wheel Lean | 18° Left/17° Right |
| Front Axle - Total Oscillation per Side | 35° |
| Drawbar - Height | — |
| Sidewall Thickness - Outer | — |
| Sidewall Thickness - Inner | — |
| Tandem Oscillation - Front Up | 15° |
| Tandem Oscillation - Front Down | 25° |
| Height | — |
| Width | — |
| Drive Chain Pitch | — |
| Wheel Axle Spacing | — |
| Maximum Blade Position Angle | 65° |
| Maximum Lift Above Ground | — |
| Maximum Depth of Cut | — |
| Maximum Shoulder Reach Outside of Tires - Right | — |
| Circle Centershift - Right | — |
| Maximum Shoulder Reach Outside of Tires - Left | — |
| Moldboard Sideshift - Right | — |
| Blade Tip Range - Backward | 5° |
| Moldboard Sideshift - Left | — |
| Circle Centershift - Left | — |
| Blade Tip Range - Forward | 40° |
| Shank Holder Spacing - Minimum | — |
| Ripping Depth - Maximum | — |
| Shank Holder Spacing - Maximum | — |
| Ripper Shank Holders | 7 |
| Penetration Force | — |
| Pry-Out Force | — |
| Machine Length Increase, Beam Raised | — |
| Gross Vehicle Weight - Typically Equipped - Rear Axle | — |
| Gross Vehicle Weight - Base** - Total | — |
| Gross Vehicle Weight - Maximum Tested - Rear Axle | — |
| Gross Vehicle Weight - Maximum Tested - Front Axle | — |
| Gross Vehicle Weight - Typically Equipped - Front Axle | — |
| Gross Vehicle Weight - Base** - Front Axle | — |
| Gross Vehicle Weight - Maximum Tested - Total | — |
| Gross Vehicle Weight - Typically Equipped - Total | — |
| Gross Vehicle Weight - Base** - Rear Axle | — |
| 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. |
| Height - Top of Cylinders | — |
| Width - Outside Rear Tires | — |
| Height - Exhaust Stack | — |
| Length - Between Tandem Axles | — |
| Length - Front Axle to Mid Tandem | — |
| Width - Tire Center Lines | — |
| Length - Front Axle to Moldboard | — |
| Length - Counterweight to Ripper | — |
| Height - Front Axle Center | — |
| Width - Outside Front Tires | — |
| Length - Front Tire to Rear of Machine - Including Tow Hitch | — |
| Height - Top of Cab | — |
| Ground Clearance - Rear Axle | — |
| 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 |
| Gear - Forward 1st | — |
| Gear - Forward 2nd | — |
| Gear - Reverse 2nd | — |
| Gear - Forward 4th | — |
| Gear - Forward 6th | — |
| Gear - Forward 5th | — |
| Gear - Forward 8th | — |
| Gear - Reverse 1st | — |
| Gear - Forward 3rd | — |
| Gear - Forward 7th | — |
| Gear - Reverse 3rd-6th | — |
| 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 |
| Gear - Forward 4th | — |
| Gear - Reverse 2nd | — |
| Gear - Forward 1st | — |
| Gear - Reverse 3rd-6th | — |
| Gear - Forward 3rd | — |
| Gear - Forward 5th | — |
| Gear - Forward 7th | — |
| Gear - Forward 2nd | — |
| Gear - Reverse 1st | — |
| Gear - Forward 6th | — |
| Gear - Forward 8th | — |
| 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). |
Benefits & Features
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.
Data not available.
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)