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M318 Wheeled Excavator

M318 Wheeled Excavator

At a Glance

Engine Power - ISO 14396
174 HP
Operating Weight Maximum
43980 lb
Maximum Travel Speed
21.7 mile/h
Engine Model
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The Cat® M318 Wheeled Excavator provides top performance with 14 percent more swing torque and features unmatched versatility with full tiltrotator integration and advanced hydraulics. Save time and money with up to 10 percent overall savings in maintenance costs, longer service intervals, and 100 percent daily ground level maintenance. The M318 gives you the power to work longer while keeping money in your pocket.


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Engine Power - ISO 14396 174HP
Engine Model C4.4
Bore 4in
Displacement 285.5in³
Stroke 5in
Note (1) Meets U.S. EPA Tier 4 Final, EU Stage V, and Korea Tier 4 Final emission standards.
Note (2) Net power advertised is the power available at the flywheel when engine is equipped with fan, air cleaner, CEM exhaust gas aftertreatment, alternator, and cooling fan running at intermediate speed.
Note (3) Recommended for use up to 3000 m (9,843 ft) altitude with engine power derate above 3000 m (9,843 ft).
Note (4) Rated speed 2,200 rpm.
Engine Power - Maximum Gross - ISO 14396 - Metric 131 kW (176 hp) (PS)

Machine Weight

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Operating Weight Maximum 43980lb
Operating Weight Minimum 38580lb
Note (1) Operating weight includes full fuel tank, operator, bucket 610 kg (1,340 lb), and dual pneumatic tires. Weight varies depending on configuration.
Note (2) Typical configurations include 2500 mm (8'2") medium stick and 3700 kg (8,157 lb) counterweight.


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Maximum Travel Speed 21.7mile/h

Hydraulic System

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Main System - Maximum Flow - Implement 67gal/min
Maximum Pressure - Equipment 5366psi
Maximum Pressure - Swing 5149gal/min
Maximum Pressure - Travel 5076gal/min

Service Refill Capacities

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Cooling System 8.5gal (US)
Diesel Exhaust Fluid (DEF) 5.3gal (US)
Hydraulic System - Including Tank 68.7gal (US)
Hydraulic Tank 31.7gal (US)
Final Drive 0.7gal (US)
Fuel Tank 92.5gal (US)


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Boom 5205 mm (17'1")
Bucket 0.91 m³ GD (1.19 yd³)
Stick 2.5 m (8' 2")
Shipping Height - Top of Cab 11ft
Shipping Length 27.8ft
Counterweight Clearance 4.3ft
Ground Clearance 1.1ft
Support Point 11.5ft
Tail Swing Radius 7.7ft
Wheel Base 8.9ft

Working Ranges and Forces

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Boom Type VA Boom
Bucket 0.91 m³ GD (1.19 yd³)
Digging Height 19.3ft
Stick 2.5 m (8' 2")
Reach at Ground Level 30.2ft
Vertical Wall Digging Depth 15.1ft
Note (1) Range values are with dual pneumatic tires (10.00-20). Range values are calculated with a GD bucket (CW) and CW-30 quick coupler with a tip radius of 1484 mm (4'10"). Force values are calculated with heavy lift on, a GD bucket (pin-on), and a tip radius o
Bucket Forces (ISO) 26752lbf
Stick Forces (ISO) 16861lbf
Cutting Height 33.7ft

Swing Mechanism

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Maximum Swing Speed 32560ft·lbf
Swing Speed 9.4r/min

Service Refill

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Engine Oil 2.9gal (US)

Air Conditioning System

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Note The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg of refrigerant which has a CO2 equivalent of 1.216 metric tonnes.


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Recyclability 92%