18

18
Cat
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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.
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.

Brochures and Spec Sheets

Gallery

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Specifications

Specification Value Unit
Base Power (1st Gear) - Net 304 hp
Engine Model
Bore 5.1 in
Stroke 6.2 in
Speed at Rated Power
Standard - Ambient Capability 122 °F
Base Power (1st Gear) - Net - Metric 309 hp
VHP Range - Net
Maximum Torque - ISO 9249 - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent 1270 lb/ft
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
Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent 1270 lb/ft
Standard - Fan Speed - Minimum
Emissions (1)
Torque Rise - Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
Maximum Torque - ISO 9249 - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 1306 lb/ft
Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final) 12500 ft
Torque Rise - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
Standard - Fan Speed - Maximum
Emissions (2)
Torque Rise - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
VHP Range - Net - Metric
Emissions (3)
Displacement 763 in³
Number of Cylinders
Operating Weight - Typically Equipped 74324 lb
Forward/Reverse Gears
Transmission
Brakes - Parking
Brakes - Dynamic Brake Torque per Wheel 27069.27 lb/ft
Brakes - Service
Brakes - Secondary
Blade Width 18 ft
Circuit Type
Pump Type
Maximum System Pressure 3590 psi
Standby Pressure 856 psi
Pump Output* 74 gpm
Note
Forward - 6th 16.0 mile/h
Forward - 2nd 3.8 mile/h
Forward - 8th 32.1 mile/h
Forward - 5th 11.8 mile/h
Reverse - 3rd 6.0 mile/h
Turning Radius - Outside Front Tires 30.5 ft
Forward - 4th 7.6 mile/h
Top Speed - Reverse 25.3 mile/h
Forward - 7th 22.0 mile/h
Articulation Angle - Left/Right
Reverse - 1st 2.2 mile/h
Forward - 3rd 5.5 mile/h
Reverse - 4th 9.3 mile/h
Forward - 1st 2.8 mile/h
Top Speed - Forward 32.1 mile/h
Reverse - 6th 25.3 mile/h
Steering Range - Left/Right
Reverse - 2nd 4.1 mile/h
Reverse - 5th 17.4 mile/h
Fuel Capacity 131 gal (US)
Cooling System 18.5 gal (US)
Hydraulic System - Tank 18.5 gal (US)
Hydraulic System - Total 38.6 gal (US)
DEF Tank 4.2 gal (US)
Engine Oil 9.5 gal (US)
Transmission - Differential - Final Drives 26 gal (US)
Tandem Housing - Each 34 gal (US)
Front Wheel Spindle Bearing Housing 0.24 gal (US)
Circle Drive Housing 2.6 gal (US)
Front Frame Structure - Width 14.0 in
Front Axle - Height to Center 26.4 in
Circle - Diameter 71.7 in
Front Frame Structure - Thickness 0.6 in
Front Frame Structure - Height 18.1 in
Circle - Blade Beam Thickness 2 in
Drawbar - Width 3 in
Front Axle - Wheel Lean
Front Axle - Total Oscillation per Side
Drawbar - Height 8 in
Sidewall Thickness - Outer 0.9 in
Sidewall Thickness - Inner 0.9 in
Tandem Oscillation - Front Up
Tandem Oscillation - Front Down
Height 25.5 in
Width 9.3 in
Drive Chain Pitch 2.5 in
Wheel Axle Spacing 72.5 in
Arc Radius 16.3 in
Throat Clearance 5 in
Down Force - Maximum GVW 43861 lb
Blade Pull* - Base GVW 47216 lb
Blade Pull* - Maximum GVW 52878 lb
End Bit - Width 6 in
Down Force - Base GVW 34008 lb
Cutting Edge Thickness 1.4 in
Thickness 1 in
Width 18 ft
Cutting Edge Width 10 in
End Bit - Thickness 0.75 in
Height 31 in
Maximum Blade Position Angle
Maximum Lift Above Ground 15.7 in
Maximum Depth of Cut 18.5 in
Maximum Shoulder Reach Outside of Tires - Right 103 in
Circle Centershift - Right 22 in
Maximum Shoulder Reach Outside of Tires - Left 103 in
Moldboard Sideshift - Right 31.1 in
Blade Tip Range - Backward
Moldboard Sideshift - Left 29.1 in
Circle Centershift - Left 27.2 in
Blade Tip Range - Forward
Shank Holder Spacing - Minimum 17.5 in
Ripping Depth - Maximum 17.8 in
Ripper Shank Holders
Penetration Force 30311 lb
Pry-Out Force 43700 lb
Machine Length Increase, Beam Raised 63.4 in
Gross Vehicle Weight - Typically Equipped - Rear Axle 53830 lb
Gross Vehicle Weight - Base** - Total 72298 lb
Gross Vehicle Weight - Maximum Tested - Rear Axle 58753 lb
Gross Vehicle Weight - Maximum Tested - Front Axle 26125 lb
Gross Vehicle Weight - Typically Equipped - Front Axle 20494 lb
Gross Vehicle Weight - Base** - Front Axle 19837 lb
Gross Vehicle Weight - Maximum Tested - Total 84877 lb
Gross Vehicle Weight - Typically Equipped - Total 74324 lb
Gross Vehicle Weight - Base** - Rear Axle 52461 lb
Height - Top of Cylinders 122.6 in
Width - Outside Rear Tires 134.3 in
Height - Exhaust Stack 141.1 in
Length - Between Tandem Axles 72.5 in
Length - Front Axle to Mid Tandem 290 in
Width - Tire Center Lines 106.4 in
Length - Front Axle to Moldboard 120.7 in
Length - Counterweight to Ripper 474.4 in
Height - Front Axle Center 29.9 in
Width - Outside Front Tires 134.3 in
Length - Front Tire to Rear of Machine - Including Tow Hitch 417 in
Height - Top of Cab 147.5 in
Ground Clearance - Rear Axle 16.7 in
Sound
ROPS/FOPS
Brakes
Steering
Gear - Forward 1st 309 hp
Wheel Group - 19.5×25 MP (2)
Optimized VHP Range - Net
Gear - Forward 4th 321 hp
Gear - Reverse 2nd 304 hp
Gear - Forward 2nd 309 hp
Gear - Reverse 2nd 309 hp
Gear - Forward 4th 325 hp
Gear - Forward 6th 341 hp
Wheel Group - 19.5×25 MP (1)
Gear - Forward 1st 304 hp
Gear - Reverse 3rd-6th 311 hp
Gear - Forward 3rd 311 hp
Gear - Forward 5th 332 hp
Gear - Forward 5th 327 hp
Gear - Forward 7th 342 hp
Wheel Group - 19.5×25 MP (3)
Shank Holder Spacing - Maximum 20 in
Note (2)
Gear - Forward 2nd 304 hp
Gear - Forward 8th 362 hp
Gear - Reverse 1st 309 hp
Gear - Forward 3rd 315 hp
Gear - Forward 7th 347 hp
Air Conditioning
Wheel Group - 19.5×25 MP (4)
Gear - Reverse 1st 304 hp
Note (1)
Gear - Forward 6th 337 hp
Gear - Forward 8th 357 hp
Gear - Reverse 3rd-6th 315 hp
Wheel Group - 19.5×25 MP (5)
Note
Note

Standard Equipment

  • NOTE
  • OPERATOR ENVIRONMENT
  • POWER TRAIN
  • GUARDS
  • ELECTRICAL
  • SAFETY
  • OTHER STANDARD EQUIPMENT
  • WORK TOOLS/G.E.T.
  • TIRES, RIMS, AND WHEELS
  • FLUIDS

Optional Equipment

  • NOTE
  • OPERATOR ENVIRONMENT
  • POWER TRAIN
  • GUARDS
  • SAFETY
  • OTHER ATTACHMENTS
  • WORK TOOLS/G.E.T.
  • FLUIDS