Create a CEG Account  /  CEG Login
☰
Parts
Buyer's Guides
Digital Issues
Videos


Caterpillar 18M3 Motor Grader Specs

Blade Range

Caterpillar 18M3 Motor Grader Blade Range specifications
Blade Tip Range - Backward 5 degrees
Blade Tip Range - Forward 40 degrees
Circle Centershift - Left 27.20 in (69.09 cm)
Circle Centershift - Right 22.00 in (55.88 cm)
Maximum Blade Position Angle 65 degrees
Maximum Depth Of Cut 18.50 in (46.99 cm)
Maximum Lift Above Ground 15.70 in (39.88 cm)
Maximum Shoulder Reach Outside Of Tires - Left 103.00 in (261.62 cm)
Maximum Shoulder Reach Outside Of Tires - Right 103.00 in (261.62 cm)
Moldboard Sideshift - Left 29.10 in (73.91 cm)
Moldboard Sideshift - Right 31.10 in (78.99 cm)

Dimensions (Approximate)

Caterpillar 18M3 Motor Grader Dimensions (Approximate) specifications
Ground Clearance - Rear Axle 16.70 in (42.42 cm)
Height - Exhaust Stack 141.10 in (358.39 cm)
Height - Front Axle Center 29.90 in (75.95 cm)
Height - Top Of Cab 12.30 ft (3.75 m)
Height - Top Of Cylinders 122.60 in (311.40 cm)
Length - Between Tandem Axles 72.50 in (184.15 cm)
Length - Counterweight To Ripper 474.40 in (1,204.98 cm)
Length - Front Axle To Mid Tandem 290.00 in (736.60 cm)
Length - Front Axle To Moldboard 120.70 in (306.58 cm)
Length - Front Tire To Rear Of Machine - Including Tow Hitch 417.00 in (1,059.18 cm)
Width - Outside Front Tires 134.30 in (341.12 cm)
Width - Outside Rear Tires 134.30 in (341.12 cm)
Width - Tire Center Lines 106.40 in (270.26 cm)

Engine

Caterpillar 18M3 Motor Grader Engine specifications
Base Power (1st Gear) - Net 304.00 hp (226.70 kw)
Base Power (1st Gear) - Net - Metric 309.00 hp (230.43 kw)
Bore 5.10 in (12.95 cm)
Derating Altitude - Tier 2/Stage Ii/Japan 2001 (Tier 2) Equivalent 12,973.00 ft (3,954.17 m)
Derating Altitude - Tier 3/Stage Iiia/Japan 2006 (Tier 3) Equivalent 12,176.00 ft (3,711.24 m)
Derating Altitude - Tier 4/Stage Iv/Japan 2014 (Tier 4 Final) 12,500.00 ft (3,810.00 m)
Displacement 763.00 cu in (12,503.36 cu cm)
Emissions (1) U.S. EPA Tier 4 Final/EU Stage IV/Japan 2014 (Tier 4 Final)
Emissions (2) Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent Emission Standards
Emissions (3) Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards
Engine Model Cat C13 ACERT VHP
Maximum Torque - Iso 9249 - Tier 2/Stage Ii/Japan 2001 (Tier 2) Equivalent 1,270.00 lbs ft (1,721.87 nm)
Maximum Torque - Iso 9249 - Tier 3/Stage Iiia/Japan 2006 (Tier 3) Equivalent 1,270.00 lbs ft (1,721.87 nm)
Maximum Torque - Iso 9249 - Tier 4/Stage Iv/Japan 2014 (Tier 4 Final) 1,306.00 lbs ft (1,770.67 nm)
Number Of Cylinders 6
Optimized Vhp Range - Net 227-266 kW (304-357 hp)
Speed At Rated Power 2,000 rpm
Standard - Ambient Capability 122 degrees
Standard - Fan Speed - Maximum 1,450 rpm
Standard - Fan Speed - Minimum 550 rpm
Stroke 6.20 in (15.75 cm)
Torque Rise - Tier 2/Stage Ii/Japan 2001 (Tier 2) Equivalent 38%
Torque Rise - Tier 3/Stage Iiia/Japan 2006 (Tier 3) Equivalent 38%
Torque Rise - Tier 4/Stage Iv/Japan 2014 (Tier 4 Final) 40%
Vhp Range - Net 227-266 kW (304-357 hp)
Vhp Range - Net - Metric 227-266 kW (309-362 hp)

Frame

Caterpillar 18M3 Motor Grader Frame specifications
Circle - Blade Beam Thickness 2.00 in (5.08 cm)
Circle - Diameter 71.70 in (182.12 cm)
Drawbar - Height 8.00 in (20.32 cm)
Drawbar - Width 3.00 in (7.62 cm)
Front Axle - Height To Center 26.40 in (67.06 cm)
Front Axle - Total Oscillation Per Side 35 degrees
Front Axle - Wheel Lean 18 degrees Left/17 degrees Right
Front Frame Structure - Height 1.60 ft (0.49 m)
Front Frame Structure - Thickness 0.10 ft (0.03 m)
Front Frame Structure - Width 1.20 ft (0.37 m)

Hydraulic System

Caterpillar 18M3 Motor Grader Hydraulic System specifications
Circuit Type Electro-hydraulic load sensing, closed center
Maximum System Pressure 3590 psi
Note *Pump output measured at 2,150 rpm.
Pump Output* 74.00 gpm (280.09 lpm)
Pump Type Variable piston
Standby Pressure 856 psi

Moldboard

Caterpillar 18M3 Motor Grader Moldboard specifications
Arc Radius 16.30 in (41.40 cm)
Blade Pull* - Base Gvw 47,216.00 lbs (21,416.84 kg)
Blade Pull* - Maximum Gvw 52,878.00 lbs (23,985.09 kg)
Blade Width 18.00 ft (5.49 m)
Cutting Edge Thickness 1.40 in (3.56 cm)
Cutting Edge Width 10.00 in (25.40 cm)
Down Force - Base Gvw 34,008.00 lbs (15,425.79 kg)
Down Force - Maximum Gvw 43,861.00 lbs (19,895.04 kg)
End Bit - Thickness 0.80 in (2.03 cm)
End Bit - Width 6.00 in (15.24 cm)
Height 31.00 in (78.74 cm)
Note *Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.
Thickness 1.00 in (2.54 cm)
Throat Clearance 5.00 in (12.70 cm)
Width 18.00 ft (5.49 m)

Operating Specifications

Caterpillar 18M3 Motor Grader Operating Specifications specifications
Articulation Angle - Left/Right 20 degrees
Forward - 1st 2.80 mph (4.51 kph)
Forward - 2nd 3.80 mph (6.12 kph)
Forward - 3rd 5.50 mph (8.85 kph)
Forward - 4th 7.60 mph (12.23 kph)
Forward - 5th 11.80 mph (18.99 kph)
Forward - 6th 16.00 mph (25.75 kph)
Forward - 7th 22.00 mph (35.41 kph)
Forward - 8th 32.10 mph (51.66 kph)
Note Calculated with no slip and 23.5R25 L-3 tires.
Reverse - 1st 2.20 mph (3.54 kph)
Reverse - 2nd 4.10 mph (6.60 kph)
Reverse - 3rd 6.00 mph (9.66 kph)
Reverse - 4th 9.30 mph (14.97 kph)
Reverse - 5th 17.40 mph (28.00 kph)
Reverse - 6th 25.30 mph (40.72 kph)
Steering Range - Left/Right 47.5 degrees
Top Speed - Forward 32.10 mph (51.66 kph)
Top Speed - Reverse 25.30 mph (40.72 kph)
Turning Radius - Outside Front Tires 30.50 ft (9.30 m)

Optional Tire Arrangements

Caterpillar 18M3 Motor Grader Optional Tire Arrangements specifications
Wheel Group - 19.525 Mp (1) Tires: 23.5R25 Bridgestone VKT 2 Star
Wheel Group - 19.525 Mp (2) Tires: 23.5R25 Bridgestone VKT 1 Star
Wheel Group - 19.525 Mp (3) Tires: 23.5R25 Bridgestone VJT 1 Star
Wheel Group - 19.525 Mp (4) Tires: 23.5R25 Michelin XHA 2 Star
Wheel Group - 19.525 Mp (5) Tires: 23.5R25 Michelin XLDD 2 Star L5

Power Train

Caterpillar 18M3 Motor Grader Power Train specifications
Brakes - Dynamic Brake Torque Per Wheel 27,069.30 lbs ft (36,700.56 nm)
Brakes - Parking Spring applied, hydraulically released
Brakes - Secondary Oil-actuated, oil-disc
Brakes - Service Oil-actuated, oil disc
Forward/Reverse Gears 8 Forward/6 Reverse
Transmission Direct drive, power shift, countershaft

Ripper

Caterpillar 18M3 Motor Grader Ripper specifications
Machine Length Increase, Beam Raised 63.40 in (161.04 cm)
Penetration Force 30,311.00 lbs (13,748.86 kg)
Pry-Out Force 43,700.00 lbs (19,822.01 kg)
Ripper Shank Holders 7
Ripping Depth - Maximum 17.80 in (45.21 cm)
Shank Holder Spacing - Maximum 20.00 in (50.80 cm)
Shank Holder Spacing - Minimum 17.50 in (44.45 cm)

Service Refill

Caterpillar 18M3 Motor Grader Service Refill specifications
Circle Drive Housing 2.60 gal (9.84 l)
Cooling System 18.50 gal (70.02 l)
Def Tank 4.20 gal (15.90 l)
Engine Oil 9.50 gal (35.96 l)
Front Wheel Spindle Bearing Housing 0.30 gal (1.14 l)
Fuel Capacity 131.00 gal (495.84 l)
Hydraulic System - Tank 18.50 gal (70.02 l)
Hydraulic System - Total 38.60 gal (146.10 l)
Tandem Housing - Each 34.00 gal (128.69 l)
Transmission - Differential - Final Drives 26.00 gal (98.41 l)

Standards

Caterpillar 18M3 Motor Grader Standards specifications
Brakes ISO 3450: 2011
Rops/Fops ISO 3471: 2008/ISO 3449: 2005
Sound ISO 6394: 2008/ISO 6395: 2008/ISO 6396: 2008
Steering ISO 5010: 2007

Tandems

Caterpillar 18M3 Motor Grader Tandems specifications
Drive Chain Pitch 2.50 in (6.35 cm)
Height 25.50 in (64.77 cm)
Sidewall Thickness - Inner 0.90 in (2.29 cm)
Sidewall Thickness - Outer 0.90 in (2.29 cm)
Tandem Oscillation - Front Down 25 degrees
Tandem Oscillation - Front Up 15 degrees
Wheel Axle Spacing 72.50 in (184.15 cm)
Width 9.30 in (23.62 cm)

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

Caterpillar 18M3 Motor Grader 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 specifications
Gear - Forward 1st 309.00 hp (230.43 kw)
Gear - Forward 2nd 309.00 hp (230.43 kw)
Gear - Forward 3rd 315.00 hp (234.90 kw)
Gear - Forward 4th 325.00 hp (242.36 kw)
Gear - Forward 5th 332.00 hp (247.58 kw)
Gear - Forward 6th 341.00 hp (254.29 kw)
Gear - Forward 7th 347.00 hp (258.76 kw)
Gear - Forward 8th 362.00 hp (269.95 kw)
Gear - Reverse 1st 309.00 hp (230.43 kw)
Gear - Reverse 2nd 309.00 hp (230.43 kw)
Gear - Reverse 3rd-6th 315.00 hp (234.90 kw)

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

Caterpillar 18M3 Motor Grader 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 specifications
Gear - Forward 1st 304.00 hp (226.70 kw)
Gear - Forward 2nd 304.00 hp (226.70 kw)
Gear - Forward 3rd 311.00 hp (231.92 kw)
Gear - Forward 4th 321.00 hp (239.37 kw)
Gear - Forward 5th 327.00 hp (243.85 kw)
Gear - Forward 6th 337.00 hp (251.31 kw)
Gear - Forward 7th 342.00 hp (255.03 kw)
Gear - Forward 8th 357.00 hp (266.22 kw)
Gear - Reverse 1st 304.00 hp (226.70 kw)
Gear - Reverse 2nd 304.00 hp (226.70 kw)
Gear - Reverse 3rd-6th 311.00 hp (231.92 kw)

Weights

Caterpillar 18M3 Motor Grader Weights specifications
Operating Weight - Typically Equipped 74,324.00 lbs (33,712.84 kg)

Weights Tier 4 Final/Stage Iv/Japan 2014 (Tier 4 Final)*

Caterpillar 18M3 Motor Grader Weights Tier 4 Final/Stage Iv/Japan 2014 (Tier 4 Final)* specifications
Gross Vehicle Weight - Base** - Front Axle 19,837.00 lbs (8,997.92 kg)
Gross Vehicle Weight - Base** - Rear Axle 52,461.00 lbs (23,795.94 kg)
Gross Vehicle Weight - Base** - Total 72,298.00 lbs (32,793.86 kg)
Gross Vehicle Weight - Maximum Tested - Front Axle 26,125.00 lbs (11,850.12 kg)
Gross Vehicle Weight - Maximum Tested - Rear Axle 58,753.00 lbs (26,649.95 kg)
Gross Vehicle Weight - Maximum Tested - Total 84,877.00 lbs (38,499.61 kg)
Gross Vehicle Weight - Typically Equipped - Front Axle 20,494.00 lbs (9,295.93 kg)
Gross Vehicle Weight - Typically Equipped - Rear Axle 53,830.00 lbs (24,416.91 kg)
Gross Vehicle Weight - Typically Equipped - Total 74,324.00 lbs (33,712.84 kg)
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.
Note (2) **Base operating weight calculated on standard machine configuration with 23.5R25 tires, full fuel tank operator and rops cab.
×

Stay Ahead of the Market

Get weekly equipment news, auction updates, and dealer insights — trusted by thousands of industry professionals.