- Shipping Length Of Unit: 29.11 ft / 8870 mm
- Shipping Height Of Unit: 10.41 ft / 3170 mm
- Max Cutting Height: 31.86 ft / 9710 mm
- Max Loading Height: 21.99 ft / 6700 mm
Published dimensions and weight
Caterpillar M318D
The Caterpillar M318D is a 20.1 t-class mobile excavator with a 166 hp engine.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale

01Dimensions referenceLength × width × height
02Operating Weight44313 lb20100 kg
03Selected published values129
Mobile excavators are commonly used for digging and material handling where wheeled travel between work areas is useful. Published rows for Caterpillar M318D include a published maximum digging depth of 18.87 ft / 5750 mm, published operating weight of 44313 lb / 20100 kg, published engine power of 174 hp / 129.8 kw. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Shipping Length Of Unit” field (29.11 ft / 8870 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Shipping Height Of Unit” field (10.41 ft / 3170 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Max Cutting Height” field (31.86 ft / 9710 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Boom/Stick Option (Mex) 1
Shipping Length Of Unit29.11 ft8870 mm
Shipping Height Of Unit10.41 ft3170 mm
Max Cutting Height31.86 ft9710 mm
Max Loading Height21.99 ft6700 mm
Max Reach Along Ground29.43 ft8970 mm
Max Vertical Wall Dig Depth10.57 ft3220 mm
Max Digging Depth18.87 ft5750 mm
Boom/Stick Option (Mex) 1VA Boom / stick 2.2mVA Boom / stick 2.2m
Boom/Stick Option (Mex) 2
Shipping Length Of Unit28.94 ft8820 mm
Shipping Height Of Unit10.83 ft3300 mm
Max Cutting Height33.5 ft10210 mm
Max Loading Height23.59 ft7190 mm
Max Reach Along Ground31.47 ft9590 mm
Max Vertical Wall Dig Depth13 ft3960 mm
Max Digging Depth20.87 ft6360 mm
Boom/Stick Option (Mex) 2VA Boom / stick 2.8mVA Boom / stick 2.8m
Boom/Stick Option (Mex) 3
Shipping Height Of Unit10.47 ft3190 mm
Shipping Length Of Unit29.11 ft8870 mm
Max Cutting Height28.75 ft8760 mm
Max Loading Height19.36 ft5900 mm
Max Reach Along Ground29.53 ft9000 mm
Max Vertical Wall Dig Depth9.45 ft2880 mm
Max Digging Depth18.71 ft5700 mm
Boom/Stick Option (Mex) 3One-piece Boom / stick 2.2mOne-piece Boom / stick 2.2m
Boom/Stick Option (Mex) 4
Shipping Height Of Unit10.93 ft3330 mm
Shipping Length Of Unit29.37 ft8950 mm
Max Cutting Height30.09 ft9170 mm
Max Loading Height20.58 ft6270 mm
Max Reach Along Ground31.5 ft9600 mm
Max Vertical Wall Dig Depth11.88 ft3620 mm
Max Digging Depth20.67 ft6300 mm
Boom/Stick Option (Mex) 4One-piece Boom / stick 2.8mOne-piece Boom / stick 2.8m
Dimensions
Wheelbase8.54 ft2600 mm
Tail Swing Radius8.21 ft2500 mm
Overall Width8.37 ft2550 mm
Ground Clearance1.22 ft370 mm
Overall Width - Outriggers Down12.54 ft3820 mm
Height To Top Of Cab10.41 ft3170 mm
Upper Structure Clearance4.2 ft1280 mm
Undercarriage
Ground Clearance1.25 ft381 mm
Minimum Turning Radius - Standard Axle - End Of Va Boom23 ft7.02 m
Minimum Turning Radius - Wide Axle - End Of Va Boom23 ft7.02 m
Minimum Turning Radius - Wide Axle - Outside Of Tire21 ft6.41 m
Oscillation Axle Angle9 degrees9 degrees
Minimum Turning Radius - Standard Axle - Outside Of Tire21 ft6.41 m
Minimum Turning Radius - Wide Axle - End Of One-Piece Boom28 ft8.54 m
Minimum Turning Radius - Standard Axle - End Of One-Piece Boom27 ft8.23 m
Engine
Cylinders66
Number Of Cylinders66
Engine Make22362236
Engine ModelC6.6 AcertC6.6 Acert
Gross Power174 hp129.8 kw
Net Power166 hp123.8 kw
Displacement403 cu in6.7 L
Torque Measured @1400 rpm1400 rpm
Net Torque596 lb ft808.1 Nm
Bore4.2 in105 mm
Stroke5 in127 mm
Net Power - Iso 9249166 hp123.8 kw
Net Power - 80/1269/Eec166 hp123.8 kw
Maximum Torque - 1,400 Rpm596 lb ft808.1 Nm
Ratings1800 rpm1800 rpm
Net Power - 1,800 Rpm - Iso 9249166 hp123.8 kw
Operational
Operating Weight44313 lb20100 kg
Fuel Capacity102 gal386.2 L
Cooling System Fluid Capacity8.5 gal32.2 L
Engine Oil Capacity4 gal15.2 L
Front Diff Fluid Capacity2.8 gal10.6 L
Rear Diff Fluid Capacity3.7 gal14.1 L
Hydraulic System Fluid Capacity71 gal268.8 L
Alternator Supplied Amperage75 amps75 amps
Hydraulic System Relief Valve Pressure5076 psi34997.8 kPa
Hydraulic Pump Flow Capacity77 gal/min291.5 L/min
Oscillating Axle Angle9 degrees9 degrees
Max Steering Angle35 degrees35 degrees
Tire Size10.00-20 16PR, dual10.00-20 16PR, dual
Swing Mechanism
Swing Speed10.5 rpm10.5 rpm
Swing Torque35403 lb ft48000.1 Nm
Transmission
Number Of Forward Gears22
Number Of Reverse Gears22
Max Travel Speed23 mph37.1 km/h
Creeper Speed - 2nd Gear8 mph12.9 km/h
Forward/Reverse - 1st Gear5 mph8.1 km/h
Creeper Speed - 1st Gear2 mph3.3 km/h
Forward/Reverse - 2nd Gear23 mph37.1 km/h
Maximum Gradeability60%60%
Tires
Standard1) 10.00-20 (dual pneumatic)1) 10.00-20 (dual pneumatic)
Optional1) 11.00-20 (dual pneumatic) 2) 18 R 19.5 XF (single pneumatic) 3) 10.00-20 (dual solid rubber)1) 11.00-20 (dual pneumatic) 2) 18 R 19.5 XF (single pneumatic) 3) 10.00-20 (dual solid rubber)
Weights
Counterweight8810 lb3996.2 kg
Dozer Blade1700 lb771.2 kg
Outriggers2270 lb1029.7 kg
Va Boom* - Rear Dozer Only39353 lb17850.3 kg
Va Boom* - Rear Dozer, Front Outriggers41667 lb18899.9 kg
Va Boom* - Front And Rear Outriggers42108 lb19099.9 kg
One-Piece Boom* - Rear Dozer Only38250 lb17350 kg
One-Piece Boom* - Front And Rear Outriggers40896 lb18550.2 kg
One-Piece Boom* - Rear Dozer, Front Outriggers40455 lb18350.1 kg
Sticks - Short (2200 Mm)1213 lb550.3 kg
Sticks - Medium (2500 Mm)1279 lb580.2 kg
Sticks - Long (2800 Mm)1323 lb600.2 kg
Sticks - Industrial (3300 Mm)1146 lb519.9 kg
Buckets
Reference Bucket Capacity1 yd30.8 m3
Minimum Bucket Capacity0.8 yd30.6 m3
Maximum Bucket Capacity2.1 yd31.6 m3
Hydraulic System
System67 gal (US)67 gal (US)
Tank Capacity45 gal170.4 L
Maximum Pressure - Auxiliary Circuit - High Pressure5076 psi5076 psi
Maximum Pressure - Implement Circuit - Normal5076 psi5076 psi
Maximum Pressure - Implement Circuit - Heavy Lift5439 psi5439 psi
Maximum Pressure - Auxiliary Circuit - Medium Pressure2683 psi2683 psi
Maximum Pressure - Travel Circuit5076 psi5076 psi
Maximum Flow - Implement/Travel Circuit77 gal/min77 gal/min
Maximum Flow - Swing Mechanism30 gal/min30 gal/min
Maximum Flow - Auxiliary Circuit - High Pressure66 gal/min66 gal/min
Maximum Flow - Auxiliary Circuit - Medium Pressure13 gal/min13 gal/min
Maximum Pressure - Swing Mechanism4496 psi4496 psi
Service Refill Capacities
Fuel Tank102 gal386.2 L
Engine Crankcase4 gal15.2 L
Final Drive0.7 gal2.7 L
Powershift Transmission0.7 gal2.7 L
Front Steering Axle - Differential2.8 gal10.6 L
Rear Axle - Housing (Differential)3.7 gal14.1 L
Cooling9.5 gal36 L
Drive
Maximum Travel Speed23 mph37.1 km/h
Sound Levels
Exterior SoundExterior SoundExterior Sound
Working Ranges
Maximum Digging Depth20.9 ft6.4 m
Maximum Reach - Ground Level31.5 ft9.7 m
Bucket Specifications
Bucket Capacities0.38 to 1.26 m3 (0.5 to 1.65 yd3)0.38 to 1.26 m3 (0.5 to 1.65 yd3)
Cab/Rops/Fogs
StandardsStandardsStandards
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