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18

Motor Graders
Specifications
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.
Blade Range
  • Maximum Blade Position Angle
    65°
  • Maximum Lift Above Ground
    15.7 in 400 mm
  • Maximum Depth of Cut
    18.5 in 470 mm
  • Maximum Shoulder Reach Outside of Tires - Right
    103 in 2605 mm
  • Circle Centershift - Right
    22 in 560 mm
  • Maximum Shoulder Reach Outside of Tires - Left
    103 in 2605 mm
  • Moldboard Sideshift - Right
    31.1 in 790 mm
  • Blade Tip Range - Backward
  • Moldboard Sideshift - Left
    29.1 in 740 mm
  • Circle Centershift - Left
    27.2 in 690 mm
  • Blade Tip Range - Forward
    40°
Dimensions (Approximate)
  • Height - Top of Cylinders
    122.6 in 3115 mm
  • Width - Outside Rear Tires
    134.3 in 3411 mm
  • Height - Exhaust Stack
    141.1 in 3584 mm
  • Length - Between Tandem Axles
    72.5 in 1841 mm
  • Length - Front Axle to Mid Tandem
    290 in 7365 mm
  • Width - Tire Center Lines
    106.4 in 2703 mm
  • Length - Front Axle to Moldboard
    120.7 in 3066 mm
  • Length - Counterweight to Ripper
    474.4 in 12051 mm
  • Height - Front Axle Center
    29.9 in 760 mm
  • Width - Outside Front Tires
    134.3 in 3411 mm
  • Length - Front Tire to Rear of Machine - Including Tow Hitch
    417 in 10593 mm
  • Height - Top of Cab
    147.5 in 3746 mm
  • Ground Clearance - Rear Axle
    16.7 in 423 mm
Engine
  • Base Power (1st Gear) - Net
    304 hp 227 kW
  • Engine Model
    Cat® C13
  • Bore
    5.1 in 130 mm
  • Stroke
    6.2 in 157 mm
  • Speed at Rated Power
    2,000 rpm
  • Standard - Ambient Capability
    122 °F 50 °C
  • Base Power (1st Gear) - Net - Metric
    309 hp 227 kW
  • VHP Range - Net
    227-266 kW (304-357 hp)
  • Maximum Torque - ISO 9249 - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
    1270 lb/ft 1721 N·m
  • Derating Altitude - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
    12176 ft 3711 m
  • Derating Altitude - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
    12973 ft 3954 m
  • Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
    1270 lb/ft 1721 N·m
  • 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)
    1306 lb/ft 1771 N·m
  • Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
    12500 ft 3810 m
  • 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
    763 in³ 12.5 l
  • Number of Cylinders
    6
Frame
  • Front Frame Structure - Width
    14 in 356 mm
  • Front Axle - Height to Center
    26.4 in 670 mm
  • Circle - Diameter
    71.7 in 1822 mm
  • Front Frame Structure - Thickness
    0.6 in 14 mm
  • Front Frame Structure - Height
    18.1 in 460 mm
  • Circle - Blade Beam Thickness
    2 in 50 mm
  • Drawbar - Width
    3 in 76 mm
  • Front Axle - Wheel Lean
    18° Left/17° Right
  • Front Axle - Total Oscillation per Side
    35°
  • Drawbar - Height
    8 in 203 mm
Hydraulic System
  • Circuit Type
    Electro-hydraulic load sensing, closed center
  • Pump Type
    Variable piston
  • Maximum System Pressure
    3590 psi 24750 kPa
  • Standby Pressure
    856 psi 5900 kPa
  • Pump Output*
    74 gal/min 280 l/min
  • Note
    *Pump output measured at 2,150 rpm.
Moldboard
  • Blade Width
    18 ft 5.5 m
  • Arc Radius
    16.3 in 413 mm
  • Throat Clearance
    5 in 126 mm
  • Down Force - Maximum GVW
    43861 lb 19895 kg
  • Blade Pull* - Base GVW
    47216 lb 21417 kg
  • Blade Pull* - Maximum GVW
    52878 lb 23985 kg
  • End Bit - Width
    6 in 152 mm
  • Down Force - Base GVW
    34008 lb 15426 kg
  • Cutting Edge Thickness
    1.4 in 35 mm
  • Thickness
    1 in 25 mm
  • Width
    18 ft 5.5 m
  • Cutting Edge Width
    10 in 254 mm
  • End Bit - Thickness
    0.75 in 19 mm
  • Height
    31 in 787 mm
  • Note
    *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.
Operating Specifications
  • Forward - 6th
    16 mile/h 25.8 km/h
  • Forward - 2nd
    3.8 mile/h 6.1 km/h
  • Forward - 8th
    32.1 mile/h 51.7 km/h
  • Forward - 5th
    11.8 mile/h 19 km/h
  • Reverse - 3rd
    6 mile/h 9.7 km/h
  • Turning Radius - Outside Front Tires
    30.5 ft 9.3 m
  • Forward - 4th
    7.6 mile/h 12.3 km/h
  • Top Speed - Reverse
    25.3 mile/h 40.8 km/h
  • Forward - 7th
    22 mile/h 35.5 km/h
  • Articulation Angle - Left/Right
    20°
  • Reverse - 1st
    2.2 mile/h 3.6 km/h
  • Forward - 3rd
    5.5 mile/h 8.9 km/h
  • Reverse - 4th
    9.3 mile/h 15 km/h
  • Forward - 1st
    2.8 mile/h 4.5 km/h
  • Top Speed - Forward
    32.1 mile/h 51.7 km/h
  • Reverse - 6th
    25.3 mile/h 40.8 km/h
  • Steering Range - Left/Right
    47.5°
  • Reverse - 2nd
    4.1 mile/h 6.6 km/h
  • Reverse - 5th
    17.4 mile/h 28 km/h
  • Note
    Calculated with no slip and 23.5R25 L-3 tires.
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
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
    27069.27 lb/ft 36701 N·m
  • Brakes - Service
    Oil-actuated, oil disc
  • Brakes - Secondary
    Oil-actuated, oil-disc
Ripper
  • Shank Holder Spacing - Minimum
    17.5 in 445 mm
  • Ripping Depth - Maximum
    17.8 in 452 mm
  • Shank Holder Spacing - Maximum
    20 in 500 mm
  • Ripper Shank Holders
    7
  • Penetration Force
    30311 lb 13749 kg
  • Pry-Out Force
    43700 lb 19822 kg
  • Machine Length Increase, Beam Raised
    63.4 in 1610 mm
Service Refill
  • Fuel Capacity
    131 gal (US) 496 l
  • Cooling System
    18.5 gal (US) 70 l
  • Hydraulic System - Tank
    18.5 gal (US) 70 l
  • Hydraulic System - Total
    38.6 gal (US) 146 l
  • DEF Tank
    4.2 gal (US) 16 l
  • Engine Oil
    9.5 gal (US) 36 l
  • Transmission - Differential - Final Drives
    26 gal (US) 98.5 l
  • Tandem Housing - Each
    34 gal (US) 129 l
  • Front Wheel Spindle Bearing Housing
    0.24 gal (US) 0.9 l
  • Circle Drive Housing
    2.6 gal (US) 10 l
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
Tandems
  • Sidewall Thickness - Outer
    0.9 in 22 mm
  • Sidewall Thickness - Inner
    0.9 in 22 mm
  • Tandem Oscillation - Front Up
    15°
  • Tandem Oscillation - Front Down
    25°
  • Height
    25.5 in 648 mm
  • Width
    9.3 in 236 mm
  • Drive Chain Pitch
    2.5 in 63.5 mm
  • Wheel Axle Spacing
    72.5 in 1841 mm
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 227 kW
  • Gear - Forward 2nd
    309 hp 227 kW
  • Gear - Reverse 2nd
    309 hp 227 kW
  • Gear - Forward 4th
    325 hp 239 kW
  • Gear - Forward 6th
    341 hp 251 kW
  • Gear - Forward 5th
    332 hp 244 kW
  • Gear - Forward 8th
    362 hp 266 kW
  • Gear - Reverse 1st
    309 hp 227 kW
  • Gear - Forward 3rd
    315 hp 232 kW
  • Gear - Forward 7th
    347 hp 255 kW
  • Gear - Reverse 3rd-6th
    315 hp 232 kW
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
    321 hp 239 kW
  • Gear - Reverse 2nd
    304 hp 227 kW
  • Gear - Forward 1st
    304 hp 227 kW
  • Gear - Reverse 3rd-6th
    311 hp 232 kW
  • Gear - Forward 3rd
    311 hp 232 kW
  • Gear - Forward 5th
    327 hp 244 kW
  • Gear - Forward 7th
    342 hp 255 kW
  • Gear - Forward 2nd
    304 hp 227 kW
  • Gear - Reverse 1st
    304 hp 227 kW
  • Gear - Forward 6th
    337 hp 251 kW
  • Gear - Forward 8th
    357 hp 266 kW
Weights
  • Operating Weight - Typically Equipped
    74324 lb 33713 kg
Weights Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final)*
  • Gross Vehicle Weight - Typically Equipped - Rear Axle
    53830 lb 24417 kg
  • Gross Vehicle Weight - Base** - Total
    72298 lb 32794 kg
  • Gross Vehicle Weight - Maximum Tested - Rear Axle
    58753 lb 26650 kg
  • Gross Vehicle Weight - Maximum Tested - Front Axle
    26125 lb 11850 kg
  • Gross Vehicle Weight - Typically Equipped - Front Axle
    20494 lb 9296 kg
  • Gross Vehicle Weight - Base** - Front Axle
    19837 lb 8998 kg
  • Gross Vehicle Weight - Maximum Tested - Total
    84877 lb 38500 kg
  • Gross Vehicle Weight - Typically Equipped - Total
    74324 lb 33713 kg
  • Gross Vehicle Weight - Base** - Rear Axle
    52461 lb 23796 kg
  • 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.
Benefits

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 Product Link™ Elite 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 VisionLink® 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 18has numerous safety features such as but not limited to -
  1. Access to Tandem
  2. Light Emitting Diode (LED) Enclosure Service Lights
  3. Seat Belt Indication
  4. Fire Suppression Ready System
  5. Rearview Camera
  6. Optional Access Platform
  7. 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.
Equipment Info

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

FLUIDS

Extended Life Coolant to –35° C (–31° F)

OPERATOR ENVIRONMENT

Adjustable electric arm rest

POWER TRAIN

Air cleaner, dual stage dry type radial seal with service indicator through messenger and automatic dust ejector

GUARDS

Front axle cylinder guard

ELECTRICAL

Alternator, 150 ampere, sealed

SAFETY

Alarm, back up

OTHER STANDARD EQUIPMENT

3-bolt blade bracket

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
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