More power, more efficiency, improved emissions control and a wider moldboard help the Cat® 18 (18M3) 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.
Compare Models
Engine
Base Power (1st Gear) - Net
304.0 HP
227.0 kW
Engine Model
Cat® C13
Cat® C13
Bore
5.1 in
130.0 mm
Stroke
6.2 in
157.0 mm
Speed at Rated Power
2,000 rpm
2,000 rpm
Standard - Ambient Capability
122.0 °F
50.0 °C
Base Power (1st Gear) - Net - Metric
309.0 HP
227.0 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
1270.0 lb/ft
1721.0 N·m
Derating Altitude - Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent
12973.0 ft
3954.0 m
Derating Altitude - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
12176.0 ft
3711.0 m
Maximum Torque - ISO 9249 - Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent
1270.0 lb/ft
1721.0 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)
1306.0 lb/ft
1771.0 N·m
Derating Altitude - Tier 4/Stage IV/Japan 2014 (Tier 4 Final)
12500.0 ft
3810.0 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
Optimized VHP Range - Net
227-266 kW (304-357 hp)
227-266 kW (304-357 hp)
Displacement
763.0 in³
12.5 l
Number of Cylinders
6
6
Power Train
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
36701.0 N·m
Brakes - Service
Oil-actuated, oil disc
Oil-actuated, oil disc
Brakes - Secondary
Oil-actuated, oil-disc
Oil-actuated, oil-disc
Hydraulic System
Circuit Type
Electro-hydraulic load sensing, closed center
Electro-hydraulic load sensing, closed center
Pump Type
Variable piston
Variable piston
Maximum System Pressure
3590.0 psi
24750.0 kPa
Standby Pressure
856.0 psi
5900.0 kPa
Pump Output*
74.0 gal/min
280.0 l/min
Note
*Pump output measured at 2,150 rpm.
*Pump output measured at 2,150 rpm.
Operating Specifications
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°
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°
47.5°
Reverse - 2nd
4.1 mile/h
6.6 km/h
Reverse - 5th
17.4 mile/h
28.0 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
Fuel Capacity
131.0 gal (US)
496.0 l
Cooling System
18.5 gal (US)
70.0 l
Hydraulic System - Tank
18.5 gal (US)
70.0 l
Hydraulic System - Total
38.6 gal (US)
146.0 l
DEF Tank
4.2 gal (US)
16.0 l
Engine Oil
9.5 gal (US)
36.0 l
Transmission - Differential - Final Drives
26.0 gal (US)
98.5 l
Tandem Housing - Each
34.0 gal (US)
129.0 l
Front Wheel Spindle Bearing Housing
0.24 gal (US)
0.9 l
Circle Drive Housing
2.6 gal (US)
10.0 l
Frame
Front Frame Structure - Width
14.0 in
356.0 mm
Front Axle - Height to Center
26.4 in
670.0 mm
Circle - Diameter
71.7 in
1822.0 mm
Front Frame Structure - Thickness
0.6 in
14.0 mm
Front Frame Structure - Height
18.1 in
460.0 mm
Circle - Blade Beam Thickness
2.0 in
50.0 mm
Drawbar - Width
3.0 in
76.0 mm
Front Axle - Wheel Lean
18° Left/17° Right
18° Left/17° Right
Front Axle - Total Oscillation per Side
35°
35°
Drawbar - Height
8.0 in
203.0 mm
Tandems
Sidewall Thickness - Outer
0.9 in
22.0 mm
Sidewall Thickness - Inner
0.9 in
22.0 mm
Tandem Oscillation - Front Up
15°
15°
Tandem Oscillation - Front Down
25°
25°
Height
25.5 in
648.0 mm
Width
9.3 in
236.0 mm
Drive Chain Pitch
2.5 in
63.5 mm
Wheel Axle Spacing
72.5 in
1841.0 mm
Moldboard
Blade Width
18.0 ft
5.5 m
Arc Radius
16.3 in
413.0 mm
Throat Clearance
5.0 in
126.0 mm
Down Force - Maximum GVW
43861.0 lb
19895.0 kg
Blade Pull* - Base GVW
47216.0 lb
21417.0 kg
Blade Pull* - Maximum GVW
52878.0 lb
23985.0 kg
End Bit - Width
6.0 in
152.0 mm
Down Force - Base GVW
34008.0 lb
15426.0 kg
Cutting Edge Thickness
1.4 in
35.0 mm
Thickness
1.0 in
25.0 mm
Width
18.0 ft
5.5 m
Cutting Edge Width
10.0 in
254.0 mm
End Bit - Thickness
0.75 in
19.0 mm
Height
31.0 in
787.0 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.
Blade Range
Maximum Blade Position Angle
65°
65°
Maximum Lift Above Ground
15.7 in
400.0 mm
Maximum Depth of Cut
18.5 in
470.0 mm
Maximum Shoulder Reach Outside of Tires - Right
103.0 in
2605.0 mm
Circle Centershift - Right
22.0 in
560.0 mm
Maximum Shoulder Reach Outside of Tires - Left
103.0 in
2605.0 mm
Moldboard Sideshift - Right
31.1 in
790.0 mm
Blade Tip Range - Backward
5°
5°
Moldboard Sideshift - Left
29.1 in
740.0 mm
Circle Centershift - Left
27.2 in
690.0 mm
Blade Tip Range - Forward
40°
40°
Ripper
Shank Holder Spacing - Minimum
17.5 in
445.0 mm
Ripping Depth - Maximum
17.8 in
452.0 mm
Shank Holder Spacing - Maximum
20.0 in
500.0 mm
Ripper Shank Holders
7
7
Penetration Force
30311.0 lb
13749.0 kg
Pry-Out Force
43700.0 lb
19822.0 kg
Machine Length Increase, Beam Raised
63.4 in
1610.0 mm
Weights
Operating Weight - Typically Equipped
74324.0 lb
33713.0 kg
Weights Tier 4 Final/Stage IV/Japan 2014 (Tier 4 Final)*
Gross Vehicle Weight - Typically Equipped - Rear Axle
53830.0 lb
24417.0 kg
Gross Vehicle Weight - Base** - Total
72298.0 lb
32794.0 kg
Gross Vehicle Weight - Maximum Tested - Rear Axle
58753.0 lb
26650.0 kg
Gross Vehicle Weight - Maximum Tested - Front Axle
26125.0 lb
11850.0 kg
Gross Vehicle Weight - Typically Equipped - Front Axle
20494.0 lb
9296.0 kg
Gross Vehicle Weight - Base** - Front Axle
19837.0 lb
8998.0 kg
Gross Vehicle Weight - Maximum Tested - Total
84877.0 lb
38500.0 kg
Gross Vehicle Weight - Typically Equipped - Total
74324.0 lb
33713.0 kg
Gross Vehicle Weight - Base** - Rear Axle
52461.0 lb
23796.0 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)
Height - Top of Cylinders
122.6 in
3115.0 mm
Width - Outside Rear Tires
134.3 in
3411.0 mm
Height - Exhaust Stack
141.1 in
3584.0 mm
Length - Between Tandem Axles
72.5 in
1841.0 mm
Length - Front Axle to Mid Tandem
290.0 in
7365.0 mm
Width - Tire Center Lines
106.4 in
2703.0 mm
Length - Front Axle to Moldboard
120.7 in
3066.0 mm
Length - Counterweight to Ripper
474.4 in
12051.0 mm
Height - Front Axle Center
29.9 in
760.0 mm
Width - Outside Front Tires
134.3 in
3411.0 mm
Length - Front Tire to Rear of Machine - Including Tow Hitch
417.0 in
10593.0 mm
Height - Top of Cab
147.5 in
3746.0 mm
Ground Clearance - Rear Axle
16.7 in
423.0 mm
Standards
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
Gear - Forward 1st
309.0 HP
227.0 kW
Gear - Forward 2nd
309.0 HP
227.0 kW
Gear - Reverse 2nd
309.0 HP
227.0 kW
Gear - Forward 4th
325.0 HP
239.0 kW
Gear - Forward 6th
341.0 HP
251.0 kW
Gear - Forward 5th
332.0 HP
244.0 kW
Gear - Forward 8th
362.0 HP
266.0 kW
Gear - Reverse 1st
309.0 HP
227.0 kW
Gear - Forward 3rd
315.0 HP
232.0 kW
Gear - Forward 7th
347.0 HP
255.0 kW
Gear - Reverse 3rd-6th
315.0 HP
232.0 kW
Optional Tire Arrangements
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
Gear - Forward 4th
321.0 HP
239.0 kW
Gear - Reverse 2nd
304.0 HP
227.0 kW
Gear - Forward 1st
304.0 HP
227.0 kW
Gear - Reverse 3rd-6th
311.0 HP
232.0 kW
Gear - Forward 3rd
311.0 HP
232.0 kW
Gear - Forward 5th
327.0 HP
244.0 kW
Gear - Forward 7th
342.0 HP
255.0 kW
Gear - Forward 2nd
304.0 HP
227.0 kW
Gear - Reverse 1st
304.0 HP
227.0 kW
Gear - Forward 6th
337.0 HP
251.0 kW
Gear - Forward 8th
357.0 HP
266.0 kW