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 ground level check, help save time and money with less maintenance costs. The M318 helps give you the power to work long while keeping money in your pocket.
Engine | |
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Engine Power - ISO 14396 | 174 hp / 129 kW |
Engine Power - ISO 14396 (DIN) | 176 hp (metric) |
Engine Model | Cat® C4.4 |
Net Power - ISO 9249 | 171 hp / 128 kW |
Net Power - ISO 9249 (DIN) | 174 hp (metric) |
Bore | 4.1 in / 105 mm |
Stroke | 5 in / 127 mm |
Displacement | 268.5 in³ / 4.4 l |
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 per the specified standard in effect at the time of manufacture. |
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 (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels.Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations“ (SEBU6250) for details. *Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. |
Drive | |
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Maximum Travel Speed | 21.7 mile/h / 35 km/h |
Hydraulic System | |
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Main System - Maximum Flow - Implement | 67 gal/min / 254 l/min |
Maximum Pressure - Implement Circuit - Normal | 5076 psi / 35000 kPa |
Maximum Pressure - Implement Circuit - Heavy Lift | 5366 psi / 37000 kPa |
Maximum Pressure - Implement Circuit - Travel Circuit | 5076 psi / 35000 kPa |
Swing Mechanism | |
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Maximum Swing Speed* | 9.4 r/min |
Maximum Swing Torque | 34739 lbf·ft / 47.1 kN·m |
Note (1) | *For CE-marked machine default value may be set lower. |
Machine Weight | |
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Operating Weight Maximum | 43980 lb / 19950 kg |
Operating Weight Minimum | 37700 lb / 17100 kg |
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. |
Service Refill Capacities | |
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Fuel Tank | 92.5 gal (US) / 350 l |
Diesel Exhaust Fluid (DEF) | 5.3 gal (US) / 20 l |
Cooling System | 8.5 gal (US) / 32 l |
Hydraulic Tank | 31.7 gal (US) / 120 l |
Hydraulic System - Including Tank | 68.7 gal (US) / 260 l |
Dimensions | |
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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 | 11 ft / 3360 mm |
Shipping Length | 27.4 ft / 8360 mm |
Support Point | 10.1 ft / 3090 mm |
Tail Swing Radius | 7.7 ft / 2350 mm |
Counterweight Clearance | 4.3 ft / 1300 mm |
Ground Clearance | 1.1 ft / 325 mm |
Undercarriage Length | 16.6 ft / 5050 mm |
Wheel Base | 8.9 ft / 2700 mm |
Working Ranges and Forces | |
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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 | 33.7 ft / 10260 mm |
Maximum Loading Height | 24 ft / 7300 mm |
Maximum Digging Depth | 19.3 ft / 5890 mm |
Maximum Vertical Wall Digging Depth | 15.1 ft / 4600 mm |
Maximum Reach at Ground Line | 30.2 ft / 9210 mm |
Stick Forces (ISO) | 16861 lbf / 75 kN |
Bucket Forces (ISO) | 26752 lbf / 119 kN |
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"). |
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 (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). |
Sustainability | |
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Recyclability | 92% |
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