M315 Wheeled Excavator

The Cat® M315 Wheeled Excavator provides top performance with up to 15 percent more swing torque and technology options to boost productivity. Save time and money with up to 10 percent savings in maintenance costs, longer service intervals, and daily ground level maintenance. The M315 gives you the power to work longer while putting money in your pocket.


  • Cat Payload helps you achieve precise load targets to improve your operating efficiency. Pick up a load of material--with a bucket and thumb combination or grapple and clamshell attachments--and get a real-time weight estimate without swinging.
  • New optional auxiliary relay powers on and turns off CB radios, beacon lights, and other attachments without you taking your hands off the joysticks.
  • Remote Flash and Remote Troubleshoot now standard.

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area.
Build Number: 07C


  • The Cat engine matches to your performance and production needs. The engine meets U.S. EPA Tier 3 and EU Stage IIIA emission standards.
  • Travel between sites easier with travel speeds up to 37 kph (23 mph).
  • From dirt to asphalt, the excavator matches your needs to get the job done in a timely, efficient manner.
  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise working requirements.
  • With up to 15 percent more swing torque, you can get the job done faster to move on to the next one. The dedicated swing pump provides consistent power for better multitasking capabilities.
  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
  • Don't let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 52°C (125°F) and cold start capability of -18°C (0°F).

Boost Efficiency and Productivity with Integrated Cat Technologies

  • Boost productivity versus traditional grading withoptional Cat Grade with 2D system.
  • Optional Cat Payload on-board weighing system: Achieve precise load targets and increase loading efficiency with on-the-go weighing and real-time estimates of your payload without swinging.
  • Combine Payload with VisionLink® and remotely manage your production targets or take payload data with you. The monitor’s USB port lets you download your results from one shift all the way up to 30 days of work so can manage your progress without needing an internet connection or VisionLink subscription.
  • Upgrade to optional Cat Grade with Advanced 2D: Create and edit grade designs with ease on a second high-resolution 254 mm (10 in) touchscreen monitor.
  • Upgrade to optional Cat Grade with 3D: Create and edit designs with ease and see the front linkage's full range of motion on a second high-resolution touchscreen monitor.
  • Optional 2D E-fence is integrated right out of the factoryto prevent the excavator from moving outside operator defined set points.
  • All Cat Grade systems are compatible with radios and base stations from Trimble, Topcon, and Leica. Already invested in a grade infrastructure? You can install grade systems from Trimble, Topcon, and Leica onto the machine.


  • Choose between Comfort and Deluxe cab options.
  • The Deluxe seat is heated and air adjustable.
  • Get in and out of the cab easier using the tip-up left console.
  • Feel more comfortable in the cab while you work with reduced cab vibrations from advanced viscous mounts.
  • Control the excavator comfortably with easy-to-reach controls.


  • Quickly check and service your machine with daily maintenance points accessible from ground level.
  • Check the engine oil level quickly and safely from the ground.
  • Save up to 10 percent in maintenance parts with the new, longer lasting filters.
  • Track your machine's filter life and maintenance intervals on the in-cab monitor.
  • Two levels of fuel filtration protect the engine from dirty diesel.
  • The new hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000-hour replacement interval - 50 percent longer than previous filter designs.
  • S•O•SSM ports are located at ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.
  • Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, bottle holder, and coat hook are also provided.
  • Bluetooth® integrated radio allows for seamless mobile phone connection to listen to music and podcasts and for hands-free calling.
  • Easily adjust to your ideal temperature with the touchscreen monitor or jog dial.


  • Start the engine with the push-to-start button, a Bluetooth key fob, or the unique Operator ID function.
  • Program your power mode and joystick preferences using Operator ID; the excavator remembers your settings each time you go to work.
  • Navigate quickly on the standard high-resolution 203 mm (8 in) or optional 254 mm (10 in) touchscreen monitor or with the aid of the jog dial control.
  • Not sure how a function works or how to maintain the excavator? Simply access the operator's manual on the touchscreen monitor.
  • The auto axle lock presses the pedal for you to reduce your overall number of actions. The machine automatically detects when the service brake and axle need to be locked or unlocked. It releases automatically when you press the travel pedal.


  • Access daily maintenance points from ground level.
  • Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the pushbutton starting feature.
  • The standard ROPS cab meets ISO 12117-2:2008 requirements.
  • Enjoy better visibility into trenches, in each swing direction, and behind you with the help of smaller cab pillars, larger windows, and a flat engine hood design. Rearview and sideview cameras are standard.
  • The service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping.
  • The standard hydraulic lockout lever isolates all hydraulic and travel functions in the lowered position.
  • Swing lock prevents front linkage from moving as you travel.
  • Ground-level shutoff switch stops all fuel to the engine when activated and shuts down the machine.

Standard Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • ROPS, Sound Suppression
  • Comfort cab
  • High-resolution 203 mm (8 in) LCD touchscreen monitor
  • Produck Link
  • Remote Flash/Troubleshoot Capability
  • Power Mode Selector
  • One-touch low idle with auto engine speed control
  • Auto engine idle shutdown
  • 52° C (125° F) high-ambient cooling capacity
  • Cold start capability -18° C (0° F)
  • Double element air filter with integrated precleaner
  • Biodiesel capability up to B20
  • Boom and stick regeneration circuits
  • Auto hydraulic warm up
  • Boom and stick drift reduction valve
  • 4650 mm (15' 3") one-piece boom
  • Tires, 9.00-20 14 PR, dual
  • All wheel drive
  • Automatic brake/axle lock
  • 3100 kg (6,834 lb) counterweight
  • Maintenance free batteries
  • Roading and indicator lights, front and rear
  • Programmable time-delay LED working lights
  • Sampling ports for Scheduled Oil Sampling (S·O·S)
  • Ground-level and platform-level engine oil dipsticks
  • Wide angle mirrors
  • Ground-level engine shutoff switch
  • Anti-skid plate
  • Signaling/warning horn

Additional information

Offering Type

Engine Power - ISO 14396

90 kW ( 121 HP )

Engine Model

Cat C3.6

Engine - Bore

98 mm ( 3.9 in )

Engine - Displacement

3.6 l ( 221 in³ )

Engine - Stroke

120 mm ( 5 in )

Engine Emissions

Meets Tier 3 and Stage IIIA emission standards.

Engine - Note (1)
Hydraulic System - Main System - Maximum Flow - Implement

270 l/min ( 71 gal/min )

Hydraulic System - Maximum Pressure - Equipment

35000 kPa ( 5076 psi )

Hydraulic System - Maximum Pressure - Swing

35500 kPa ( 5149 psi )

Hydraulic System - Maximum Pressure - Travel

35000 kPa ( 5076 psi )

Swing Mechanism - Maximum Swing Torque

39 kN·m ( 28860 ft·lbf )

Swing Mechanism - Swing Speed

9.1 r/min ( 9.1 r/min )

Machine Weight - Operating Weight Maximum

15700 kg ( 34610 lb )

Machine Weight - Operating Weight Minimum

15100 kg ( 33290 lb )

Service Refill Capacities - Final Drive

2.4 l ( 0.6 gal (US) )

Service Refill Capacities - Hydraulic System - Including Tank

220 l ( 58.1 gal (US) )

Service Refill Capacities - Hydraulic Tank

90 l ( 23.8 gal (US) )

Dimensions - Boom

4650 mm (15' 3")

Dimensions - Bucket

GD 0.76 m3 (0.99 yd3)

Dimensions - Stick

2.2m (7' 3")

Dimensions - Counterweight Clearance

1230 mm ( 4 ft )

Dimensions - Ground Clearance

305 mm ( 1 ft )

Dimensions - Shipping Height - Top of Cab

10.9 mm ( 3285 ft )

Dimensions - Shipping Length

7770 mm ( 25.5 ft )

Dimensions - Tail Swing Radius

2150 mm ( 7.1 ft )

Dimensions - Undercarriage Length

4920 mm ( 16.1 ft )

Dimensions - Wheel Base

2500 mm ( 8.2 ft )

Working Ranges and Forces - Boom Type

One-Piece Boom

Working Ranges and Forces - Bucket

0.76m3 (0.99 y3) GD

Working Ranges and Forces - Stick

R2.2CB (7' 3")

Working Ranges and Forces - Digging Height

8730 mm ( 28.6 ft )

Working Ranges and Forces - Dump Height

6000 mm ( 19.7 ft )

Working Ranges and Forces - Reach at Ground Level

8190 mm ( 26.9 ft )

Working Ranges and Forces - Vertical Wall Digging Depth

4320 mm ( 14.1 ft )

Drive - Maximum Travel Speed

37 km/h ( 23 mile/h )

Engine - Note (2)

No engine power derating required below 3,000 m (9,843 ft) altitude.

Engine - Note (3)

Recommended for use up to 3000 m (9,843 ft) altitude with engine power derate above 3000 m (9,843 ft).

Engine - Note (4)

Rated speed at 2,000 rpm.

Working Ranges and Forces - Note (1)

Range values are calculated with a GD bucket (CW) and CW-20-D.4.N quick coupler with a tip radius of 1387 mm (4' 7"). Range values are with dual pneumatic tires (9.00-20).

Machine Weight - Note (1)

Operating weight includes full fuel tank, operator, 500 kg (1,102 lb) bucket and 9.00-20 dual pneumatic tires. Weight varies depending on configuration.

Service Refill Capacities - Diesel Exhaust Fluid (DEF)

20 l ( 5.3 gal (US) )

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