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18 Motor Grader

18 Motor Grader

Keep Haul Roads Productive and Efficient

More Comfort ÔÇô More Performance ÔÇô More Versatility

  • Move more with less fuel

    Eco Mode saves fuel while maintaining productivity.

  • Maintain cross slope

    Cat Grade Control helps operator maintain desired cross slope.

  • Manage your fleet

    Cat MineStar helps manage your fleet to optimize quality and operating costs.

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 in┬│
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)

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

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 gal/min
Pump Type Variable piston
Standby Pressure 856 psi

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

Service Refill

Circle Drive Housing 2.6 gal (US)
Cooling System 18.5 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)

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

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

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

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

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

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.

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

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

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

Optional Tire Arrangements

Wheel Group - 19.5├Ś25 MP (1) Tires: 23.5R25 Bridgestone VKT 2 Star
Wheel Group - 19.5├Ś25 MP (2) Tires: 23.5R25 Bridgestone VKT 1 Star
Wheel Group - 19.5├Ś25 MP (3) Tires: 23.5R25 Bridgestone VJT 1 Star
Wheel Group - 19.5├Ś25 MP (4) Tires: 23.5R25 Michelin XHA 2 Star
Wheel Group - 19.5├Ś25 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 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

Download resources

18 Product Brochure
18 Product Brochure (Brazil)
Motor Grader Rig Out Catalog
18 Poster

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