M318 Wheel Excavator
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.
Specifications
Equipment
Product Brochures
Attachments
Units:
Engine
Engine Power - ISO 14396
174 hp
129 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric)
176 hp (metric)
Engine Model
Cat® C4.4
Net Power - ISO 9249
171 hp
128 kW
Net Power - ISO 9249 (DIN)
174 hp (metric)
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
Maximum Travel Speed
21.7 mile/h
35 km/h
Hydraulic System
Main System - Maximum Flow - Implement
67 gpm
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
Maximum Swing Speed*
9.4 r/min
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
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
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
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
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
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%
Standard Equipment
NOTE
CAB
CAT TECHNOLOGY
ENGINE
ELECTRICAL SYSTEM
HYDRAULIC SYSTEM
SAFETY AND SECURITY
SERVICE AND MAINTENANCE
UNDERCARRIAGE AND STRUCTURES
