Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200
The Caterpillar M318D is a wheeled excavator in Caterpillar's M Series, designed for roadwork, utility, material handling, and general excavation applications. It is powered by a Caterpillar diesel engine and uses a hydraulic system optimized for digging, lifting, and attachment work. The M318D features a wheeled undercarriage for mobility between job sites and urban work areas, along with a cab designed for operator visibility and control. Common configurations include boom and stick options, blade or stabilizer equipment, and compatibility with a range of work tools. The M318D is used in construction, infrastructure maintenance, and municipal operations.
| Max Digging Depth | 20.70 ft (6.31 m) |
| Max Reach Along Ground | 31.50 ft (9.60 m) |
| Max Cutting Height | 31.90 ft (9.72 m) |
| Max Digging Depth | 18.90 ft (5.76 m) |
| Max Loading Height | 22.00 ft (6.71 m) |
| Max Reach Along Ground | 29.50 ft (8.99 m) |
| Max Vertical Wall Dig Depth | 10.60 ft (3.23 m) |
| Shipping Height of Unit | 10.50 ft (3.20 m) |
| Shipping Length of Unit | 29.20 ft (8.90 m) |
| Max Cutting Height | 33.50 ft (10.21 m) |
| Max Digging Depth | 20.90 ft (6.37 m) |
| Max Loading Height | 23.60 ft (7.19 m) |
| Max Reach Along Ground | 31.50 ft (9.60 m) |
| Max Vertical Wall Dig Depth | 13.00 ft (3.96 m) |
| Shipping Height of Unit | 10.90 ft (3.32 m) |
| Shipping Length of Unit | 29.00 ft (8.84 m) |
| Max Cutting Height | 28.80 ft (8.78 m) |
| Max Digging Depth | 18.80 ft (5.73 m) |
| Max Loading Height | 19.40 ft (5.91 m) |
| Max Reach Along Ground | 29.60 ft (9.02 m) |
| Max Vertical Wall Dig Depth | 9.50 ft (2.90 m) |
| Shipping Height of Unit | 10.50 ft (3.20 m) |
| Shipping Length of Unit | 29.20 ft (8.90 m) |
| Max Cutting Height | 30.10 ft (9.17 m) |
| Max Digging Depth | 20.70 ft (6.31 m) |
| Max Loading Height | 20.60 ft (6.28 m) |
| Max Reach Along Ground | 31.50 ft (9.60 m) |
| Max Vertical Wall Dig Depth | 11.90 ft (3.63 m) |
| Shipping Height of Unit | 11.00 ft (3.35 m) |
| Shipping Length of Unit | 29.40 ft (8.96 m) |
| Bucket Capacities | 1.65 cu yd (1.26 cu m) |
| Maximum Bucket Capacity | 2.10 cu yd (1.61 cu m) |
| Minimum Bucket Capacity | 0.80 cu yd (0.61 cu m) |
| Reference Bucket Capacity | 1.00 cu yd (0.76 cu m) |
| Ground Clearance | 1.30 ft (0.40 m) |
| Height - Top of Cab | 10.50 ft (3.20 m) |
| Overall Width | 8.40 in (21.34 cm) |
| Overall Width - Outriggers Down | 12.60 ft (3.84 m) |
| Tail Swing Radius | 8.30 ft (2.53 m) |
| Upper Structure Clearance | 4.20 ft (1.28 m) |
| Wheelbase | 8.60 ft (2.62 m) |
| Maximum Travel Speed | 23.00 mph (37.01 kph) |
| Bore | 4.20 in (10.67 cm) |
| Displacement | 403.00 cu in (6,604.00 cu cm) |
| Engine Model | Cat C6.6 with ACERT Technology |
| Gross Power | 174.00 hp (129.75 kw) |
| Make | Caterpillar |
| Maximum Torque - 1,400 rpm | 596.00 lbs ft (808.06 nm) |
| Net Power | 166.00 hp (123.79 kw) |
| Net Torque | 596.00 lbs ft (808.06 nm) |
| Number of Cylinders | 6 |
| Ratings | 1800 rpm |
| Stroke | 5.00 in (12.70 cm) |
| Torque Measured @ | 1400 rpm |
| Maximum Flow - Auxiliary Circuit - High Pressure | 66.00 gpm (249.81 lpm) |
| Maximum Flow - Auxiliary Circuit - Medium Pressure | 13.00 gpm (49.21 lpm) |
| Maximum Flow - Implement/Travel Circuit | 77.00 gpm (291.45 lpm) |
| Maximum Flow - Swing Mechanism | 30.00 gpm (113.55 lpm) |
| Maximum Pressure - Auxiliary Circuit - High Pressure | 5076 psi |
| Maximum Pressure - Auxiliary Circuit - Medium Pressure | 2683 psi |
| Maximum Pressure - Implement Circuit - Heavy Lift | 5439 psi |
| Maximum Pressure - Implement Circuit - Normal | 5076 psi |
| Maximum Pressure - Swing Mechanism | 4496 psi |
| Maximum Pressure - Travel Circuit | 5076 psi |
| System | 67.00 gal (253.60 l) |
| Tank Capacity | 45.00 gal (170.33 l) |
| Alternator Supplied Amperage | 75 amps |
| Cooling System Fluid Capacity | 8.50 gal (32.17 l) |
| Engine Oil Capacity | 4.00 gal (15.14 l) |
| Front Diff Fluid Capacity | 2.80 gal (10.60 l) |
| Fuel Capacity | 102.00 gal (386.07 l) |
| Hydraulic Pump Flow Capacity | 77.00 gpm (291.45 lpm) |
| Hydraulic System Fluid Capacity | 71.00 gal (268.74 l) |
| Hydraulic System Relief Valve Pressure | 5076 psi |
| Max Steering Angle | 35 degrees |
| Operating Weight | 44,313.00 lbs (20,100.06 kg) |
| Oscillating Axle Angle | 9 degrees |
| Rear Diff Fluid Capacity | 3.70 gal (14.00 l) |
| Tire Size | 10.00-20 16PR dual |
| Cooling | 9.50 gal (35.96 l) |
| Engine Crankcase | 4.00 gal (15.14 l) |
| Final Drive | 0.70 gal (2.65 l) |
| Front Steering Axle - Differential | 2.80 gal (10.60 l) |
| Fuel Tank | 102.00 gal (386.07 l) |
| Powershift Transmission | 0.70 gal (2.65 l) |
| Rear Axle - Housing (Differential) | 3.70 gal (14.00 l) |
| Swing Speed | 10.5 rpm |
| Swing Torque | 35,403.00 lbs ft (47,999.39 nm) |
| Optional | 1) 11.00-20 (dual pneumatic) 2) 18 R 19.5 XF (single pneumatic) 3) 10.00-20 (dual solid rubber) |
| Standard | 1) 10.00-20 (dual pneumatic) |
| Creeper Speed - 1st Gear | 2.00 mph (3.22 kph) |
| Creeper Speed - 2nd Gear | 8.00 mph (12.87 kph) |
| Forward/Reverse - 1st Gear | 5.00 mph (8.05 kph) |
| Forward/Reverse - 2nd Gear | 23.00 mph (37.01 kph) |
| Max Travel Speed | 23.00 mph (37.01 kph) |
| Maximum Gradeability | 60% |
| Number of Forward Gears | 2 |
| Number of Reverse Gears | 2 |
| Ground Clearance | 1.30 ft (0.40 m) |
| Oscillation Axle Angle | 9 degrees |
| Counterweight | 8,810.00 lbs (3,996.15 kg) |
| Dozer Blade | 1,700.00 lbs (771.11 kg) |
| One-Piece Boom - Front and Rear Outriggers | 40,896.00 lbs (18,550.14 kg) |
| One-Piece Boom - Rear Dozer, Front Outriggers | 40,455.00 lbs (18,350.10 kg) |
| Outriggers | 2,270.00 lbs (1,029.66 kg) |
| VA Boom - Front and Rear Outriggers | 42,108.00 lbs (19,099.89 kg) |
| VA Boom - Rear Dozer Only | 39,353.00 lbs (17,850.24 kg) |
| VA Boom - Rear Dozer, Front Outriggers | 41,667.00 lbs (18,899.86 kg) |
| Maximum Digging Depth | 20.90 ft (6.37 m) |
| Maximum Reach - Ground Level | 31.50 ft (9.60 m) |