CAT 18M3 Motor Grader Specs, Weight & Dimensions

Contents

Ripper
Engine Details
Frame
Engine Details
Frame
Engine Details
Frame
Power Train
Weights
Hydraulic System
Moldboard
Hydraulic System
Moldboard
Operating Specifications
Dimensions (Approximate)
Standards
Service Refill
Blade Range
Tandems
Optional Tire Arrangements
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
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
Weights Tier 4 Final/Stage Iv/Japan 2014 (Tier 4 Final)*

Ripper

Pry-Out Force	43700 lb (19822 kg)
Ripping Depth – Maximum	17.8 in (452.2 mm)
Ripper Shank Holders	7
Penetration Force	30311 lb (13748.9 kg)
Machine Length Increase, Beam Raised	63.4 in (1610.4 mm)
Shank Holder Spacing – Minimum	17.5 in (444.5 mm)
Shank Holder Spacing – Maximum	20 in (508 mm)

Engine Details

Number Of Cylinders

Frame

Front Frame Structure – Height	1.6 ft in (459.8 mm)
Front Frame Structure – Width	1.2 ft in (355.6 mm)
Front Frame Structure – Thickness	0.1 ft in (15.3 mm)

Engine Details

Displacement	763 cu in (12.6 L)
Bore	5.1 in (129.6 mm)
Stroke	6.2 in (157.5 mm)
Engine Model	Cat C13 ACERT VHP
Base Power (1st Gear) – Net	304 hp (226.7 kw)
Speed At Rated Power	2,000 rpm
Base Power (1st Gear) – Net – Metric	309 hp (230.5 kw)

Frame

Circle – Diameter	71.7 in (1821.2 mm)
Drawbar – Height	8 in (203.2 mm)
Front Axle – Height To Center	26.4 in (670.6 mm)
Circle – Blade Beam Thickness	2 in (50.8 mm)
Front Axle – Total Oscillation Per Side	35 degrees
Drawbar – Width	3 in (76.2 mm)

Engine Details

Standard – Fan Speed – Maximum	1,450 rpm
Standard – Fan Speed – Minimum	550 rpm
Standard – Ambient Capability	122 degrees
Vhp Range – Net – Metric	227-266 kW (309-362 hp)
Vhp Range – Net	227-266 kW (304-357 hp)
Torque Rise – Tier 4/Stage Iv/Japan 2014 (Tier 4 Final)	40%
Torque Rise – Tier 3/Stage Iiia/Japan 2006 (Tier 3) Equivalent	38%
Emissions (1)	US EPA Tier 4 Final/EU Stage IV/Japan 2014 (Tier 4 Final)
Emissions (3)	Tier 2/Stage II/Japan 2001 (Tier 2) Equivalent Emission Standards
Emissions (2)	Tier 3/Stage IIIA/Japan 2006 (Tier 3) Equivalent Emission Standards
Torque Rise – Tier 2/Stage Ii/Japan 2001 (Tier 2) Equivalent	38%
Maximum Torque – Iso 9249 – Tier 4/Stage Iv/Japan 2014 (Tier 4 Final)	1306 lb ft (1770.7 Nm)
Maximum Torque – Iso 9249 – Tier 3/Stage Iiia/Japan 2006 (Tier 3) Equivalent	1270 lb ft (1721.9 Nm)
Maximum Torque – Iso 9249 – Tier 2/Stage Ii/Japan 2001 (Tier 2) Equivalent	1270 lb ft (1721.9 Nm)
Derating Altitude – Tier 4/Stage Iv/Japan 2014 (Tier 4 Final)	12500 ft in (3810 m)
Derating Altitude – Tier 3/Stage Iiia/Japan 2006 (Tier 3) Equivalent	12176 ft in (3711.3 m)
Derating Altitude – Tier 2/Stage Ii/Japan 2001 (Tier 2) Equivalent	12973 ft in (3954.2 m)
Optimized Vhp Range – Net	227-266 kW (304-357 hp)

Frame

Front Axle – Wheel Lean

18 degrees Left/17 degrees Right

Power Train

Brakes – Parking	Spring applied, hydraulically released
Brakes – Service	Oil-actuated, oil disc
Transmission	Direct drive, power shift, countershaft
Forward/Reverse Gears	8 Forward/6 Reverse
Brakes – Secondary	Oil-actuated, oil-disc
Brakes – Dynamic Brake Torque Per Wheel	27069.3 lb ft (36701.1 Nm)

Weights

Operating Weight – Typically Equipped

74324 lb (33712.9 kg)

Hydraulic System

Standby Pressure	856 psi
Maximum System Pressure	3590 psi
Pump Type	Variable piston
Circuit Type	Electro-hydraulic load sensing, closed center
Note	*Pump output measured at 2,150 rpm.

Moldboard

Blade Width	18 ft in (5.5 m)
Arc Radius	16.3 in (414.1 mm)
Throat Clearance	5 in (127 mm)
Thickness	1 in (25.4 mm)
Cutting Edge Width	10 in (254 mm)
Cutting Edge Thickness	1.4 in (35.6 mm)
End Bit – Width	6 in (152.4 mm)
End Bit – Thickness	0.8 in (19.1 mm)
Note	*Blade pull calculated at 0.9 traction coefficient, which is equal to ideal no-slip conditions, and Gross Machine Weight.
Width	18 ft in (5.5 m)
Height	31 in (787.4 mm)

Hydraulic System

Pump Output*

74 gal/min

Moldboard

Blade Pull* – Maximum Gvw	52878 lb (23985.1 kg)
Down Force – Maximum Gvw	43861 lb (19895.1 kg)
Blade Pull* – Base Gvw	47216 lb (21416.9 kg)
Down Force – Base Gvw	34008 lb (15425.8 kg)

Operating Specifications

Note	Calculated with no slip and 23.5R25 L-3 tires.
Top Speed – Forward	32.1 mph (51.7 km/h)
Top Speed – Reverse	25.3 mph (40.8 km/h)
Turning Radius – Outside Front Tires	30.5 ft in (9.3 m)
Steering Range – Left/Right	47.5 degrees
Articulation Angle – Left/Right	20 degrees
Forward – 8th	32.1 mph (51.7 km/h)
Forward – 7th	22 mph (35.5 km/h)
Forward – 6th	16 mph (25.8 km/h)
Forward – 5th	11.8 mph (19 km/h)
Forward – 4th	7.6 mph (12.3 km/h)
Forward – 3rd	5.5 mph (8.9 km/h)
Forward – 2nd	3.8 mph (6.2 km/h)
Forward – 1st	2.8 mph (4.6 km/h)
Reverse – 6th	25.3 mph (40.8 km/h)
Reverse – 5th	17.4 mph (28.1 km/h)
Reverse – 4th	9.3 mph (15 km/h)
Reverse – 3rd	6 mph (9.7 km/h)
Reverse – 2nd	4.1 mph (6.6 km/h)
Reverse – 1st	2.2 mph (3.6 km/h)

Dimensions (Approximate)

Height – Top Of Cab	12.3 ft in (0.4 m)
Length – Front Axle To Mid Tandem	290 in (7366 mm)
Length – Between Tandem Axles	72.5 in (1841.5 mm)
Height – Front Axle Center	29.9 in (759.5 mm)
Length – Front Axle To Moldboard	120.7 in (3065.8 mm)
Length – Counterweight To Ripper	474.4 in (12049.8 mm)
Length – Front Tire To Rear Of Machine – Including Tow Hitch	417 in (10591.8 mm)
Height – Exhaust Stack	141.1 in (3584 mm)
Width – Tire Center Lines	106.4 in (2702.6 mm)
Width – Outside Rear Tires	134.3 in (3411.3 mm)
Width – Outside Front Tires	134.3 in (3411.3 mm)
Height – Top Of Cylinders	122.6 in (3114.1 mm)
Ground Clearance – Rear Axle	16.7 in (424.2 mm)

Standards

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

Service Refill

Cooling System	18.5 gal (70.1 L)
Hydraulic System – Total	38.6 gal (146.2 L)
Engine Oil	9.5 gal (36 L)
Hydraulic System – Tank	18.5 gal (70.1 L)
Def Tank	4.2 gal (15.9 L)
Tandem Housing – Each	34 gal (128.8 L)
Circle Drive Housing	2.6 gal (9.9 L)
Front Wheel Spindle Bearing Housing	0.3 gal (1 L)
Fuel Tank Capacity	131 gal (495.9 L)
Transmission – Differential – Final Drives	26 gal (98.5 L)

Blade Range

Circle Centershift – Right	22 in (558.8 mm)
Circle Centershift – Left	27.2 in (690.9 mm)
Moldboard Sideshift – Right	31.1 in (790 mm)
Moldboard Sideshift – Left	29.1 in (739.2 mm)
Blade Tip Range – Forward	40 degrees
Blade Tip Range – Backward	5 degrees
Maximum Shoulder Reach Outside Of Tires – Right	103 in (2616.2 mm)
Maximum Shoulder Reach Outside Of Tires – Left	103 in (2616.2 mm)
Maximum Lift Above Ground	15.7 in (398.8 mm)
Maximum Depth Of Cut	18.5 in (469.9 mm)
Maximum Blade Position Angle	65 degrees

Tandems

Height	25.5 in (647.7 mm)
Width	9.3 in (236.3 mm)
Sidewall Thickness – Inner	0.9 in (22.9 mm)
Sidewall Thickness – Outer	0.9 in (22.9 mm)
Drive Chain Pitch	2.5 in (63.5 mm)
Wheel Axle Spacing	72.5 in (1841.5 mm)
Tandem Oscillation – Front Up	15 degrees
Tandem Oscillation – Front Down	25 degrees

Optional Tire Arrangements

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

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 hp (230.5 kw)
Gear – Forward 2nd	309 hp (230.5 kw)
Gear – Forward 3rd	315 hp (234.9 kw)
Gear – Forward 4th	325 hp (242.4 kw)
Gear – Forward 5th	332 hp (247.6 kw)
Gear – Forward 6th	341 hp (254.3 kw)
Gear – Forward 7th	347 hp (258.8 kw)
Gear – Forward 8th	362 hp (270 kw)
Gear – Reverse 1st	309 hp (230.5 kw)
Gear – Reverse 2nd	309 hp (230.5 kw)
Gear – Reverse 3rd-6th	315 hp (234.9 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

Gear – Forward 1st	304 hp (226.7 kw)
Gear – Forward 2nd	304 hp (226.7 kw)
Gear – Forward 3rd	311 hp (232 kw)
Gear – Forward 4th	321 hp (239.4 kw)
Gear – Forward 5th	327 hp (243.9 kw)
Gear – Forward 6th	337 hp (251.4 kw)
Gear – Forward 7th	342 hp (255.1 kw)
Gear – Forward 8th	357 hp (266.3 kw)
Gear – Reverse 1st	304 hp (226.7 kw)
Gear – Reverse 2nd	304 hp (226.7 kw)
Gear – Reverse 3rd-6th	311 hp (232 kw)

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

Gross Vehicle Weight – Maximum Tested – Total	84877 lb (38499.6 kg)
Gross Vehicle Weight – Typically Equipped – Front Axle	20494 lb (9296 kg)
Gross Vehicle Weight – Maximum Tested – Front Axle	26125 lb (11850.2 kg)
Gross Vehicle Weight – Base** – Rear Axle	52461 lb (23796 kg)
Gross Vehicle Weight – Typically Equipped – Total	74324 lb (33712.9 kg)
Gross Vehicle Weight – Base** – Front Axle	19837 lb (8998 kg)
Gross Vehicle Weight – Maximum Tested – Rear Axle	58753 lb (26650 kg)
Gross Vehicle Weight – Typically Equipped – Rear Axle	53830 lb (24416.9 kg)
Gross Vehicle Weight – Base** – Total	72298 lb (32793.9 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.