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M318 Wheeled Excavator

M318 Wheeled Excavator

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 14396174HP

Engine Power - ISO 14396 (DIN)176hp (metric)

Engine ModelC4.4

Net Power - ISO 9249171HP

Net Power - ISO 9249 (DIN)174hp (metric)




Biodiesel CapabilityUp to B20¹

EmissionsMeets U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 emission standards.

Note (1)Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, CEM exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standar

Note (2)¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO

Operating Weight Maximum43980lb

Operating Weight Minimum38580lb

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.

Maximum Travel Speed21.7mile/h

Main System - Maximum Flow - Implement67gal/min

Maximum Pressure - Equipment5366psi

Maximum Pressure - Swing5149gal/min

Maximum Pressure - Travel5076gal/min

Cooling System8.5gal (US)

Diesel Exhaust Fluid (DEF)5.3gal (US)

Hydraulic System - Including Tank68.7gal (US)

Hydraulic Tank31.7gal (US)

Final Drive0.7gal (US)

Fuel Tank92.5gal (US)

Boom5205 mm (17'1")

Bucket0.91 m³ GD (1.19 yd³)

Stick2.5 m (8' 2")

Shipping Height - Top of Cab11ft

Shipping Length27.8ft

Counterweight Clearance4.3ft

Ground Clearance1.1ft

Support Point11.5ft

Tail Swing Radius7.7ft

Wheel Base8.9ft

Boom TypeVA Boom

Bucket0.91 m³ GD (1.19 yd³)

Digging Height19.3ft

Stick2.5 m (8' 2")

Reach at Ground Level30.2ft

Vertical Wall Digging Depth15.1ft

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 Height33.7ft

Maximum Swing Speed32560ft·lbf

Swing Speed9.4r/min

Engine Oil2.9gal (US)

NoteThe 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.



Standard and optional equipment may vary. Consult your Cat dealer for details.


Standard and optional equipment may vary. Consult your Cat dealer for details.


ROPS, sound suppression

High-resolution 254 mm (10 in) LCD touchscreen monitor


Deluxe cab

Premium cab

Auxiliary relay



Remote Flash

Remote Troubleshoot


Cat Grade Connectivity

Cat Grade 2D

Cat Grade with Attachment Ready Option (ARO)

Cat Grade 3D dual GNSS

Laser catcher

Grade Assist

Cat Payload

Cat Tilt Rotator (TRS) Integration


Power mode selector

One-touch low idle with auto engine speed control

Auto Engine Idle Shutdown

52° C (125° F) high-ambient cooling capacity

Cold start capability -18° C (0° F)

Double element air filter with integrated precleaner

Electric priming pump


LED lights on boom and cab

Roading and indicator lights, front and rear

Maintenance free batteries

Centralized electrical disconnect switch


LED lights on chassis (left-hand, right-hand) and counterweight

Electrical refueling pump


Automatic swing brake

Auto hydraulic oil warmup

Electronic main control valve

Boom and stick drift reduction valves


Boom/stick lowering check valves


Ride control

Cat TRS support

Joystick steering

Slider joysticks (2 types)

Combined flow/high-pressure auxiliary circuit

Quick coupler circuit


Rearview and right-side view cameras

Wide angle mirrors

Ground level engine shutoff switch

Anti-skid plate

Signaling/warning horn

Integrated vehicle health management system


360° visibility

Rotating beacon

Inspection lighting


Sampling ports for Scheduled Oil Sampling (S-O-S)

Ground-level and platform-level engine oil dipsticks


Automatic lubrication system for implement and swing system


Automatic brake/axle lock

All-wheel drive


10.00-20 16 PR, dual tires

315/70R22.5, no gap dual tires

445/70R 19.5, single tires

300-80-22.5 dual pneumatic, spacerless tires

3700 kg (8,157 lb) counterweight

4200 kg (9,259 lb) counterweight


5100 mm (16'9") One-piece boom

5205 mm (17'1") variable adjustable boom

2200 mm (7'3") stick

2500 mm (8'2") stick

2900 mm (9'6") stick

View used options

See Available Used options



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