M318 Wheel Excavator

M318 Wheel Excavator

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The Cat® M318 Wheel Excavator helps provide top performance with high swing torque, featuring versatility with Cat tiltrotator (TRS) integration and advanced hydraulics. Long service intervals and 100 percent daily ...
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Engine

Engine Power - ISO 14396
174hp
Engine Power - ISO 14396 (DIN)
176hp (metric)
Engine Model
Cat® C4.4
Net Power - ISO 9249
171hp
Net Power - ISO 9249 (DIN)
174hp (metric)
Bore
4.1in
Stroke
5in
Displacement
268.5in³
Biodiesel Capability
Up to B20¹
Emissions
Meets U.S. EPA Tier 4 Final, EU Stage V, and Korea Stage V emission standards.
Note (1)
Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested p
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

Machine Weight

Operating Weight Maximum
43980lb
Operating Weight Minimum
37700lb
Note (1)
Operating weight includes full fuel tank, operator, bucket 610 kg (1,340 lb), and dual pneumatic tires. Weight varies depending on configuration. Typical configurations include 2.5 m (8' 2") medium stick and 3700 kg (8,157 lb) counterweight.

Drive

Maximum Travel Speed
21.7mile/h

Hydraulic System

Main System - Maximum Flow - Implement
67gal/min
Maximum Pressure - Implement Circuit - Normal
5076psi
Maximum Pressure - Implement Circuit - Heavy Lift
5366psi
Maximum Pressure - Implement Circuit - Travel Circuit
5076psi

Swing Mechanism

Maximum Swing Speed*
9.4r/min
Maximum Swing Torque
34739lbf·ft
Note (1)
*For CE-marked machine default value may be set lower.

Service Refill Capacities

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

Dimensions

Boom
Variable Adjustable Boom 5.2 m (17'1")
Stick
2.5 m (8' 2")
Bucket
GD 0.91 m³ (1.19 yd³)
Shipping Height - Top of Cab
11ft
Shipping Length
27.4ft
Support Point
10.1ft
Tail Swing Radius
7.7ft
Counterweight Clearance
4.3ft
Ground Clearance
1.1ft
Undercarriage Length
16.6ft
Wheel Base
8.9ft

Working Ranges and Forces

Boom
Variable Adjustable Boom 5.2 m (17'1")
Stick
2.5 m (8' 2")
Bucket
GD 0.91 m³ (1.19 yd³)
Maximum Cutting Height
33.7ft
Maximum Loading Height
24ft
Maximum Digging Depth
19.3ft
Maximum Vertical Wall Digging Depth
15.1ft
Maximum Reach at Ground Line
30.2ft
Stick Forces (ISO)
16861lbf
Bucket Forces (ISO)
26752lbf
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

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 (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).

Sustainability

Recyclability
92%

Optional Equipment:

    Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
    Boom And Sticks
    • 5100 mm (16'9") One-piece boom
    • 5205 mm (17'1") Variable Adjustable boom
    • 2200 mm (7'3") stick (All regions except N Am)
    • 2500 mm (8'2") stick
    • 2900 mm (9'6") stick (All regions except S Korea)
    Cab
    • Operator Protective Guards (OPG)
    Cat Technology
    • Cat Grade with 2D
    • Cat Grade with 2D with Attachment Ready Option (ARO)
    • Laser catcher
    • Cat Grade 3D ready
    • Cat Grade Connectivity
    • Cat Grade with Assist
    • Cat Payload
    • Cat Tiltrotator (TRS) integration
    Electrical System
    • LED lights on chassis (left-hand, right-hand) and counterweight
    • Electrical refueling pump
    Hydraulic System
    • Boom/stick lowering check valves
    • Bucket cylinder check valves
    • One-slider joysticks
    • Two-slider joysticks
    • Joystick steering
    Safety And Security
    • 360° visibility
    • Inspection lighting
    • 2D E-fence
    • Cab avoidance
    Service And Maintenance
    • Automatic lubrication system for implement and swing system
    Undercarriage And Structures
    • 10.00-20 16 PR, dual tires
    • 315/70R22.5, no gap dual tires (All regions except N Am)
    • 445/70R 19.5, single tires
    • 300-80-22.5 dual pneumatic, spacerless tires (Europe only)
    • 3700 kg (8,157 lb) counterweight (Europe only)
    • 4200 kg (9,259 lb) counterweight