BETTER COMFORT AND CONTROL
Main content
Cat
18 Motor Grader
Base Power (1st Gear) – Net
304 hp
227 kW
Operating Weight – Typically Equipped
74324 lb
33713 kg
Blade Width
18 ft
5.5 m
Overview
More power, more efficiency, improved emissions control and a wider moldboard help the Cat® 18 rise up to the challenge of mining operations. Technologies assist the operator and work to minimize operating costs. And, Cat durability helps ensure peak availability.
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Exterior
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Interior
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Details
Specifications
Engine
Spec | Value |
---|---|
Base Power (1st Gear) – Net | 304 hp 227 kW |
Engine Model | Cat® C13 Cat® C13 |
Bore | 5.1 in 130 mm |
Stroke | 6.2 in 157 mm |
Speed at Rated Power | 2,000 rpm 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) 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 550 rpm |
Emissions (1) | U.S. EPA Tier 4 Final/EU Stage V/Japan 2014 (Tier 4 Final) 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% 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% 38% |
Standard – Fan Speed – Maximum | 1,450 rpm 1,450 rpm |
Emissions (2) | Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent Emission Standards Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent Emission Standards |
Torque Rise – Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent | 38% 38% |
VHP Range – Net – Metric | 227-266 kW (309-362 hp) 227-266 kW (309-362 hp) |
Emissions (3) | Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards |
Displacement | 763 in³ 12.5 l |
Number of Cylinders | 6 6 |
Optimized VHP Range – Net | 227-266 kW (304-357 hp) 227-266 kW (304-357 hp) |
Weights
Spec | Value |
---|---|
Operating Weight – Typically Equipped | 74324 lb 33713 kg |
Power Train
Spec | Value |
---|---|
Forward/Reverse Gears | 8 Forward/6 Reverse 8 Forward/6 Reverse |
Transmission | Direct drive, power shift, countershaft Direct drive, power shift, countershaft |
Brakes – Parking | Spring applied, hydraulically released Spring applied, hydraulically released |
Brakes – Dynamic Brake Torque per Wheel | 27069.27 lb/ft 36701 N·m |
Brakes – Service | Oil-actuated, oil disc Oil-actuated, oil disc |
Brakes – Secondary | Oil-actuated, oil-disc Oil-actuated, oil-disc |
Moldboard
Spec | Value |
---|---|
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. *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight. |
Hydraulic System
Spec | Value |
---|---|
Circuit Type | Electro-hydraulic load sensing, closed center Electro-hydraulic load sensing, closed center |
Pump Type | Variable piston 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. *Pump output measured at 2,150 rpm. |
Operating Specifications
Spec | Value |
---|---|
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° 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° 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. Calculated with no slip and 23.5R25 L-3 tires. |
Service Refill
Spec | Value |
---|---|
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 |
Frame
Spec | Value |
---|---|
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 18° Left/17° Right |
Front Axle – Total Oscillation per Side | 35° 35° |
Drawbar – Height | 8 in 203 mm |
Tandems
Spec | Value |
---|---|
Sidewall Thickness – Outer | 0.9 in 22 mm |
Sidewall Thickness – Inner | 0.9 in 22 mm |
Tandem Oscillation – Front Up | 15° 15° |
Tandem Oscillation – Front Down | 25° 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 |
Blade Range
Spec | Value |
---|---|
Maximum Blade Position Angle | 65° 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 | 5° 5° |
Moldboard Sideshift – Left | 29.1 in 740 mm |
Circle Centershift – Left | 27.2 in 690 mm |
Blade Tip Range – Forward | 40° 40° |
Ripper
Spec | Value |
---|---|
Shank Holder Spacing – Minimum | 17.5 in 445 mm |
Ripping Depth – Maximum | 17.8 in 452 mm |
Ripper Shank Holders | 7 7 |
Penetration Force | 30311 lb 13749 kg |
Pry-Out Force | 43700 lb 19822 kg |
Machine Length Increase, Beam Raised | 63.4 in 1610 mm |
Shank Holder Spacing – Maximum | 20 in 500 mm |
Weights Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final)*
Spec | Value |
---|---|
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. **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. *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)
Spec | Value |
---|---|
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 |
Standards
Spec | Value |
---|---|
Sound | ISO 6394: 2008/ISO 6395: 2008/ISO 6396: 2008 ISO 6394: 2008/ISO 6395: 2008/ISO 6396: 2008 |
ROPS/FOPS | ISO 3471: 2008/ISO 3449: 2005 ISO 3471: 2008/ISO 3449: 2005 |
Brakes | ISO 3450: 2011 ISO 3450: 2011 |
Steering | ISO 5010: 2007 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
Spec | Value |
---|---|
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 |
Optional Tire Arrangements
Spec | Value |
---|---|
Wheel Group – 19.5×25 MP (2) | Tires: 23.5R25 Bridgestone VKT 1 Star Tires: 23.5R25 Bridgestone VKT 1 Star |
Wheel Group – 19.5×25 MP (1) | Tires: 23.5R25 Bridgestone VKT 2 Star Tires: 23.5R25 Bridgestone VKT 2 Star |
Wheel Group – 19.5×25 MP (3) | Tires: 23.5R25 Bridgestone VJT 1 Star Tires: 23.5R25 Bridgestone VJT 1 Star |
Wheel Group – 19.5×25 MP (4) | Tires: 23.5R25 Michelin XHA 2 Star Tires: 23.5R25 Michelin XHA 2 Star |
Wheel Group – 19.5×25 MP (5) | Tires: 23.5R25 Michelin XLDD 2 Star L5 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
Spec | Value |
---|---|
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 |
Air Conditioning System
Spec | Value |
---|---|
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. 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. |
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)