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Caterpillar M318D Excavator

The Caterpillar M318D is a wheeled excavator in Caterpillar's M Series, designed for roadwork, utility, material handling, and general excavation applications. It is powered by a Caterpillar diesel engine and uses a hydraulic system optimized for digging, lifting, and attachment work. The M318D features a wheeled undercarriage for mobility between job sites and urban work areas, along with a cab designed for operator visibility and control. Common configurations include boom and stick options, blade or stabilizer equipment, and compatibility with a range of work tools. The M318D is used in construction, infrastructure maintenance, and municipal operations.


See all Caterpillar M318Ds for sale

Boom/Stick Excavator Option 1

Max Digging Depth20.70 ft (6.31 m)
Max Reach Along Ground31.50 ft (9.60 m)

Boom/Stick Mobile Excavator Option 1

Max Cutting Height31.90 ft (9.72 m)
Max Digging Depth18.90 ft (5.76 m)
Max Loading Height22.00 ft (6.71 m)
Max Reach Along Ground29.50 ft (8.99 m)
Max Vertical Wall Dig Depth10.60 ft (3.23 m)
Shipping Height of Unit10.50 ft (3.20 m)
Shipping Length of Unit29.20 ft (8.90 m)

Boom/Stick Mobile Excavator Option 2

Max Cutting Height33.50 ft (10.21 m)
Max Digging Depth20.90 ft (6.37 m)
Max Loading Height23.60 ft (7.19 m)
Max Reach Along Ground31.50 ft (9.60 m)
Max Vertical Wall Dig Depth13.00 ft (3.96 m)
Shipping Height of Unit10.90 ft (3.32 m)
Shipping Length of Unit29.00 ft (8.84 m)

Boom/Stick Mobile Excavator Option 3

Max Cutting Height28.80 ft (8.78 m)
Max Digging Depth18.80 ft (5.73 m)
Max Loading Height19.40 ft (5.91 m)
Max Reach Along Ground29.60 ft (9.02 m)
Max Vertical Wall Dig Depth9.50 ft (2.90 m)
Shipping Height of Unit10.50 ft (3.20 m)
Shipping Length of Unit29.20 ft (8.90 m)

Boom/Stick Mobile Excavator Option 4

Max Cutting Height30.10 ft (9.17 m)
Max Digging Depth20.70 ft (6.31 m)
Max Loading Height20.60 ft (6.28 m)
Max Reach Along Ground31.50 ft (9.60 m)
Max Vertical Wall Dig Depth11.90 ft (3.63 m)
Shipping Height of Unit11.00 ft (3.35 m)
Shipping Length of Unit29.40 ft (8.96 m)

Bucket

Bucket Capacities1.65 cu yd (1.26 cu m)
Maximum Bucket Capacity2.10 cu yd (1.61 cu m)
Minimum Bucket Capacity0.80 cu yd (0.61 cu m)
Reference Bucket Capacity1.00 cu yd (0.76 cu m)

Dimensions

Ground Clearance1.30 ft (0.40 m)
Height - Top of Cab10.50 ft (3.20 m)
Overall Width8.40 in (21.34 cm)
Overall Width - Outriggers Down12.60 ft (3.84 m)
Tail Swing Radius8.30 ft (2.53 m)
Upper Structure Clearance4.20 ft (1.28 m)
Wheelbase8.60 ft (2.62 m)

DRIVE SYSTEM

Maximum Travel Speed23.00 mph (37.01 kph)

Engine

Bore4.20 in (10.67 cm)
Displacement403.00 cu in (6,604.00 cu cm)
Engine ModelCat C6.6 with ACERT Technology
Gross Power174.00 hp (129.75 kw)
MakeCaterpillar
Maximum Torque - 1,400 rpm596.00 lbs ft (808.06 nm)
Net Power166.00 hp (123.79 kw)
Net Torque596.00 lbs ft (808.06 nm)
Number of Cylinders6
Ratings1800 rpm
Stroke5.00 in (12.70 cm)
Torque Measured @1400 rpm

Hydraulic System

Maximum Flow - Auxiliary Circuit - High Pressure66.00 gpm (249.81 lpm)
Maximum Flow - Auxiliary Circuit - Medium Pressure13.00 gpm (49.21 lpm)
Maximum Flow - Implement/Travel Circuit77.00 gpm (291.45 lpm)
Maximum Flow - Swing Mechanism30.00 gpm (113.55 lpm)
Maximum Pressure - Auxiliary Circuit - High Pressure5076 psi
Maximum Pressure - Auxiliary Circuit - Medium Pressure2683 psi
Maximum Pressure - Implement Circuit - Heavy Lift5439 psi
Maximum Pressure - Implement Circuit - Normal5076 psi
Maximum Pressure - Swing Mechanism4496 psi
Maximum Pressure - Travel Circuit5076 psi
System67.00 gal (253.60 l)
Tank Capacity45.00 gal (170.33 l)

Operating Specifications

Alternator Supplied Amperage75 amps
Cooling System Fluid Capacity8.50 gal (32.17 l)
Engine Oil Capacity4.00 gal (15.14 l)
Front Diff Fluid Capacity2.80 gal (10.60 l)
Fuel Capacity102.00 gal (386.07 l)
Hydraulic Pump Flow Capacity77.00 gpm (291.45 lpm)
Hydraulic System Fluid Capacity71.00 gal (268.74 l)
Hydraulic System Relief Valve Pressure5076 psi
Max Steering Angle35 degrees
Operating Weight44,313.00 lbs (20,100.06 kg)
Oscillating Axle Angle9 degrees
Rear Diff Fluid Capacity3.70 gal (14.00 l)
Tire Size10.00-20 16PR dual

Service Refill Capacities

Cooling9.50 gal (35.96 l)
Engine Crankcase4.00 gal (15.14 l)
Final Drive0.70 gal (2.65 l)
Front Steering Axle - Differential2.80 gal (10.60 l)
Fuel Tank102.00 gal (386.07 l)
Powershift Transmission0.70 gal (2.65 l)
Rear Axle - Housing (Differential)3.70 gal (14.00 l)

Swing Mechanism

Swing Speed10.5 rpm
Swing Torque35,403.00 lbs ft (47,999.39 nm)

Tires

Optional1) 11.00-20 (dual pneumatic) 2) 18 R 19.5 XF (single pneumatic) 3) 10.00-20 (dual solid rubber)
Standard1) 10.00-20 (dual pneumatic)

Transmission

Creeper Speed - 1st Gear2.00 mph (3.22 kph)
Creeper Speed - 2nd Gear8.00 mph (12.87 kph)
Forward/Reverse - 1st Gear5.00 mph (8.05 kph)
Forward/Reverse - 2nd Gear23.00 mph (37.01 kph)
Max Travel Speed23.00 mph (37.01 kph)
Maximum Gradeability60%
Number of Forward Gears2
Number of Reverse Gears2

Undercarriage

Ground Clearance1.30 ft (0.40 m)
Oscillation Axle Angle9 degrees

Weights

Counterweight8,810.00 lbs (3,996.15 kg)
Dozer Blade1,700.00 lbs (771.11 kg)
One-Piece Boom - Front and Rear Outriggers40,896.00 lbs (18,550.14 kg)
One-Piece Boom - Rear Dozer, Front Outriggers40,455.00 lbs (18,350.10 kg)
Outriggers2,270.00 lbs (1,029.66 kg)
VA Boom - Front and Rear Outriggers42,108.00 lbs (19,099.89 kg)
VA Boom - Rear Dozer Only39,353.00 lbs (17,850.24 kg)
VA Boom - Rear Dozer, Front Outriggers41,667.00 lbs (18,899.86 kg)

Working Ranges

Maximum Digging Depth20.90 ft (6.37 m)
Maximum Reach - Ground Level31.50 ft (9.60 m)

  • Caterpillar M318Ds currently for sale
  • A 2007 Caterpillar M318D From Tracey Road Equipment, Inc. for $52,900.00 USD
  • A 2007 Caterpillar M318D From Caledonia Diesel LLC for $102,000.00 USD
  • A 2014 Caterpillar M318D From Ritchie Bros. Auctioneers for Auction Pricing
  • A Caterpillar M318D From Zeppelin Baumaschinen for $49,000.00 USD



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