Exterior View
Interior View

18 Motor Grader

The 18 builds on the success of the 16 and offers additional power, a wider moldboard and the possibility to use a more aggressive blade angle, making it an ideal fit for mining operations that run 172-tonne (190-ton) or smaller trucks. The 18 enhances operational efficiencies by increasing coverage and reducing the number of passes required to complete the width of the road in certain applications. The 18 includes features that provide large benefits on operating cost reduction, uptime, performance improvements, and enhanced safety.

Base Power (1st Gear) – Net
304hp
Engine Model
Cat® C13
Bore
5.1in
Stroke
6.2in
Speed at Rated Power
2,000 rpm
Optimized VHP Range – Net
227-266 kW (304-357 hp)
Standard – Ambient Capability
122°F
Base Power (1st Gear) – Net – Metric
309hp
VHP Range – Net
227-266 kW (304-357 hp)
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)
1306lb/ft
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
Maximum Torque – ISO 9249 – Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
1270lb/ft
Derating Altitude – Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
12176ft
Derating Altitude – Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
12973ft
Maximum Torque – ISO 9249 – Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
1270lb/ft
Derating Altitude – Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
12500ft
Displacement
763in³
Number of Cylinders
6
Operating Weight – Typically Equipped
74324lb
Blade Width
18ft
Arc Radius
16.3in
Throat Clearance
5in
Down Force – Maximum GVW
43861lb
End Bit – Width
6in
Down Force – Base GVW
34008lb
Cutting Edge Thickness
1.4in
Width
18ft
Cutting Edge Width
10in
End Bit – Thickness
0.75in
Note
*Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.
Blade Pull* – Base GVW
47216lb
Blade Pull* – Maximum GVW
52878lb
Thickness
1in
Height
31in
Fuel Capacity
131gal (US)
Cooling System
18.5gal (US)
DEF Tank
4.2gal (US)
Hydraulic System – Tank
18.5gal (US)
Hydraulic System – Total
38.6gal (US)
Engine Oil
9.5gal (US)
Transmission – Differential – Final Drives
26gal (US)
Tandem Housing – Each
34gal (US)
Front Wheel Spindle Bearing Housing
0.24gal (US)
Circle Drive Housing
2.6gal (US)
Forward/Reverse Gears
8 Forward/6 Reverse
Transmission
Direct drive, power shift, countershaft
Brakes – Parking
Spring applied, hydraulically released
Brakes – Service
Oil-actuated, oil disc
Brakes – Secondary
Oil-actuated, oil-disc
Brakes – Dynamic Brake Torque per Wheel
27069.27lb/ft
Circuit Type
Electro-hydraulic load sensing, closed center
Pump Type
Variable piston
Maximum System Pressure
3590psi
Standby Pressure
856psi
Pump Output*
74gal/min
Note
*Pump output measured at 2,150 rpm.
Maximum Blade Position Angle
65°
Maximum Lift Above Ground
15.7in
Maximum Depth of Cut
18.5in
Maximum Shoulder Reach Outside of Tires – Right
103in
Circle Centershift – Right
22in
Maximum Shoulder Reach Outside of Tires – Left
103in
Moldboard Sideshift – Right
31.1in
Blade Tip Range – Backward
Moldboard Sideshift – Left
29.1in
Circle Centershift – Left
27.2in
Blade Tip Range – Forward
40°
Gear – Forward 7th
342hp
Gear – Forward 2nd
304hp
Gear – Reverse 1st
304hp
Gear – Forward 6th
337hp
Gear – Forward 8th
357hp
Gear – Reverse 2nd
304hp
Gear – Forward 4th
321hp
Gear – Forward 1st
304hp
Gear – Reverse 3rd-6th
311hp
Gear – Forward 3rd
311hp
Gear – Forward 5th
327hp
Gear – Reverse 1st
309hp
Gear – Forward 7th
347hp
Gear – Reverse 3rd-6th
315hp
Gear – Forward 1st
309hp
Gear – Forward 2nd
309hp
Gear – Forward 4th
325hp
Gear – Forward 5th
332hp
Gear – Forward 8th
362hp
Gear – Forward 3rd
315hp
Gear – Reverse 2nd
309hp
Gear – Forward 6th
341hp
Front Frame Structure – Width
14in
Front Axle – Height to Center
26.4in
Circle – Diameter
71.7in
Front Frame Structure – Thickness
0.6in
Front Frame Structure – Height
18.1in
Circle – Blade Beam Thickness
2in
Drawbar – Width
3in
Front Axle – Wheel Lean
18° Left/17° Right
Front Axle – Total Oscillation per Side
35°
Drawbar – Height
8in
Sidewall Thickness – Outer
0.9in
Sidewall Thickness – Inner
0.9in
Tandem Oscillation – Front Up
15°
Tandem Oscillation – Front Down
25°
Height
25.5in
Width
9.3in
Drive Chain Pitch
2.5in
Wheel Axle Spacing
72.5in
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.
Shank Holder Spacing – Minimum
17.5in
Ripping Depth – Maximum
17.8in
Shank Holder Spacing – Maximum
20in
Ripper Shank Holders
7
Penetration Force
30311lb
Pry-Out Force
43700lb
Machine Length Increase, Beam Raised
63.4in
Gross Vehicle Weight – Maximum Tested – Front Axle
26125lb
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.
Gross Vehicle Weight – Typically Equipped – Rear Axle
53830lb
Gross Vehicle Weight – Base** – Total
72298lb
Gross Vehicle Weight – Maximum Tested – Rear Axle
58753lb
Gross Vehicle Weight – Typically Equipped – Front Axle
20494lb
Gross Vehicle Weight – Base** – Front Axle
19837lb
Gross Vehicle Weight – Maximum Tested – Total
84877lb
Gross Vehicle Weight – Typically Equipped – Total
74324lb
Gross Vehicle Weight – Base** – Rear Axle
52461lb
Height – Exhaust Stack
141.1in
Length – Between Tandem Axles
72.5in
Width – Tire Center Lines
106.4in
Length – Front Axle to Moldboard
120.7in
Length – Counterweight to Ripper
474.4in
Height – Top of Cab
147.5in
Height – Top of Cylinders
122.6in
Width – Outside Rear Tires
134.3in
Length – Front Axle to Mid Tandem
290in
Height – Front Axle Center
29.9in
Width – Outside Front Tires
134.3in
Length – Front Tire to Rear of Machine – Including Tow Hitch
417in
Ground Clearance – Rear Axle
16.7in
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
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
Note
Calculated with no slip and 23.5R25 L-3 tires.
Forward – 6th
16mile/h
Forward – 2nd
3.8mile/h
Forward – 8th
32.1mile/h
Forward – 5th
11.8mile/h
Reverse – 3rd
6mile/h
Turning Radius – Outside Front Tires
30.5ft
Forward – 4th
7.6mile/h
Top Speed – Reverse
25.3mile/h
Forward – 7th
22mile/h
Articulation Angle – Left/Right
20°
Reverse – 1st
2.2mile/h
Forward – 3rd
5.5mile/h
Reverse – 4th
9.3mile/h
Forward – 1st
2.8mile/h
Top Speed – Forward
32.1mile/h
Reverse – 6th
25.3mile/h
Steering Range – Left/Right
47.5°
Reverse – 2nd
4.1mile/h
Reverse – 5th
17.4mile/h
  • 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)
  • 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)

Why Choose Louisiana Cat

We serve to build and power our community for a better future.

  • Provide a safe & meaningful work environment
  • Deliver innovative solutions through our expertise
  • Committed to the long-term growth and success of our employees and customers
  • Grow our business profitably

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Small Excavators Big Savings: Terms and Conditions

* Offer valid from October 1, 2024 through December 31, 2024 on new 313 through 317 Cat® excavators sold by participating Cat dealers to customers in the USA or Canada. Purchase must occur during offer period. Offer subject to machine availability and credit approval by Cat Financial. Not all customers will qualify. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply.

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*Offer valid from October 1, 2024 through December 31, 2024. Offer only available on select new Cat® machines listed in our Heavy Equipment Promotion page. Purchase must occur by December 31, 2024. Offer subject to machine availability. Offer is subject to credit approval by Caterpillar Financial Services Corporation for US customers, and Caterpillar Financial Services Limited for Canadian customers. Not all customers will qualify. The offered Cat Customer Value Agreement (CVA) includes 6 maintenance parts kits; S∙O∙SSM; and 36 month VisionLink® ConnectPro. The maintenance parts cover the first 3,000 hours^ (estimated 3 years) of machine utilization. Each kit contains one set of parts for regular planned maintenance under normal operating conditions. In some severe applications where maintenance parts need to be replaced more frequently, additional parts will be at customer’s expense. Offer excludes additional maintenance parts, dealer labor, wear parts, and fluids. Offer also includes a 36 month/5000 hour (whichever occurs first) Powertrain, Hydraulics and Technology Equipment Protection Plan (EPP). In some areas, EPP might be sold separately from the CVA. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply. Contact your Cat dealer for details.

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*Offer valid from October 1, 2024 through December 31, 2024. Offer only available on purchases of new mini excavators, micro excavators, skid steer loaders, and compact track loaders sold by participating Cat dealers to customers in the USA or Canada. Purchases (both machine and CVA) and machine delivery must occur by December 31, 2024. Offer subject to machine availability. Offer is subject to credit approval by Caterpillar Financial Services Corporation for US customers, and Caterpillar Financial Services Limited for Canadian customers. Not all customers will qualify. The credit $500 USD for CVA purchase can only be applied toward the purchase of a qualifying Cat Customer Value Agreement (CVA). CVA must be at least 2yr/1000hr and must include 1-year Preventative Maintenance Parts Kit, TA1 annual Inspection, signed CVA contract, and Product LinkTM. Amount of CVA credit is the same for all models and cannot exceed the price of the qualifying CVA. Offer may change without prior notice and cannot be combined with any other offers. Additional terms and conditions may apply.

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