Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

18 Motor Grader with ripper and push block

18

Motor Graders
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.
Base Power (1st Gear) - Net
304 hp/227 kW
Engine Model
Cat® C13
Speed at Rated Power
2,000 rpm
Standard - Ambient Capability
122 °F/50 °C

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Base Power (1st Gear) - Net
304 hp 227 kW
Engine Model
Cat® C13
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
Number of Cylinders
6
Optimized VHP Range - Net
227-266 kW (304-357 hp)
Operating Weight - Typically Equipped
74324 lb 33713 kg
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
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
9.3 in 236 mm
Cutting Edge Width
10 in 254 mm
End Bit - Thickness
0.75 in 19 mm
Height
25.5 in 648 mm
Note
*Pump output measured at 2,150 rpm.
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 gpm 280 L/min
Note
*Pump output measured at 2,150 rpm.
Forward - 6th
16.0 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 19.0 km/h
Reverse - 3rd
6.0 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
22.0 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 15.0 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 28.0 km/h
Note
*Pump output measured at 2,150 rpm.
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
Front Frame Structure - Width
14.0 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
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
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°
Shank Holder Spacing - Minimum
17.5 in 445 mm
Ripping Depth - Maximum
17.8 in 452 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
Shank Holder Spacing - Maximum
20 in 500 mm
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.
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
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
Gear - Forward 1st
309 hp 227 kW
Gear - Forward 2nd
309 hp 227 kW
Gear - Reverse 2nd
304 hp 227 kW
Gear - Forward 4th
321 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
311 hp 232 kW
Gear - Forward 7th
342 hp 255 kW
Gear - Reverse 3rd-6th
311 hp 232 kW
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
Gear - Forward 4th
321 hp 239 kW
Gear - Reverse 2nd
304 hp 227 kW
Gear - Forward 1st
309 hp 227 kW
Gear - Reverse 3rd-6th
311 hp 232 kW
Gear - Forward 3rd
311 hp 232 kW
Gear - Forward 5th
332 hp 244 kW
Gear - Forward 7th
342 hp 255 kW
Gear - Forward 2nd
309 hp 227 kW
Gear - Reverse 1st
309 hp 227 kW
Gear - Forward 6th
341 hp 251 kW
Gear - Forward 8th
362 hp 266 kW
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. - If equipped with R134a (Global Warming Potential = 1430), the system contains 2 kg (4.4 lb) of refrigerant which has a CO2 equivalent of 2.860 metric tonnes (3.152 tons).

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Bore
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