New CAT Equipment

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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    Learn more about the M318 Wheeled Excavator


    Product Specs


    Engine Power - ISO 14396 174 HP
    Engine Model C4.4
    Bore 4 in
    Displacement 285.5 in³
    Stroke 5 in
    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)

    Hydraulic System

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

    Machine Weight

    Operating Weight Maximum 43980 lb
    Operating Weight Minimum 38580 lb
    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.

    Service Refill Capacities

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

    Service Refill

    Engine Oil 2.9 gal (US)


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

    Working Ranges and Forces

    Boom Type VA Boom
    Bucket 0.91 m³ GD (1.19 yd³)
    Digging Height 19.3 ft
    Stick 2.5 m (8' 2")
    Reach at Ground Level 30.2 ft
    Vertical Wall Digging Depth 15.1 ft
    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 of 1378 mm (4'6").
    Bucket Forces (ISO) 26752 lbf
    Stick Forces (ISO) 16861 lbf
    Cutting Height 33.7 ft

    Swing Mechanism

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

    Air Conditioning System

    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.


    Maximum Travel Speed 21.7 mile/h


    Recyclability 92%