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315 Hydraulic Excavator

Net Power - ISO 9249

108 HP

Operating Weight

34000 lb

Maximum Digging Depth

19.6 ft


The Cat®315 excavator offers superior performance in a compact design. Standard, easy-to-use Cat technologies boost operator efficiencies and improve jobsite productivity while a large, ergonomic cab provides a comfortable working environment. Combined with simplified maintenance points, the 315 keeps you working, quickly and efficiently.



  • Discover the Cat® 315 & 315 GC Hydraulic Excavators
  • Stick Steer for Cat® Excavators

360° View


315 Exterior Spinset


315 Interior Spinset


Virtual Product Tour



  • Engine
    Spec Value
    Net Power - ISO 9249 108 HP
    Net Power - ISO 9249 (DIN) 110 hp (metric)
    Engine Model Cat C3.6
    Engine Power - ISO 14396 110 HP
    Engine Power - ISO 14396 (DIN) 111 hp (metric)
    Bore 4 in
    Stroke 5 in
    Displacement 220 in³
    Biodiesel Capability Up to B20¹
    Emissions Meets U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 emission standards.
    Note (1) Net power advertised is the power available at the flywheel when the engine is equipped with fan, air intake system, exhaust system and alternator with engine speed at 2,400 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.
  • Hydraulic System
    Spec Value
    Main System - Maximum Flow 276 l/min (73 gal/min)
    Maximum Pressure - Equipment 5075 psi
    Maximum Pressure - Travel 5075 psi
    Maximum Pressure - Swing 3770 psi
  • Swing Mechanism
    Spec Value
    Swing Speed 12 r/min
    Maximum Swing Torque 25815 ft·lbf
  • Weights
    Spec Value
    Operating Weight 34000 lb
  • Service Refill Capacities
    Spec Value
    Fuel Tank Capacity 49 gal (US)
    Cooling System 4 gal (US)
    Engine Oil 2 gal (US)
    Final Drive - Each 1 gal (US)
    Hydraulic System - Including Tank 22.5 gal (US)
    Hydraulic Tank 19 gal (US)
    DEF Tank 6 gal (US)
  • Dimensions
    Spec Value
    Boom Reach 4.65 m (15'3")
    Stick Reach R3.0 m (9'10")
    Bucket GD 0.53 m³ (0.69 yd³)
    Shipping Height - Top of Cab 9.2 ft
    Handrail Height 9.3 ft
    Shipping Length 24.7 ft
    Shipping Length - with Blade 26.5 ft
    Tail Swing Radius 5.1 ft
    Counterweight Clearance 2.8 ft
    Ground Clearance 1.4 ft
    Track Length 12.3 ft
    Length to Center of Rollers 9.9 ft
    Track Gauge 6.5 ft
    Transport Width 8.1 ft
  • Working Ranges & Forces
    Spec Value
    Maximum Digging Depth 19.6 ft
    Boom Reach 4.65 m (15'3")
    Stick Reach R3.0 m (9'10")
    Bucket GD 0.53 m³ (0.69 yd³)
    Maximum Reach at Ground Level 28.5 ft
    Maximum Cutting Height 31.7 ft
    Maximum Loading Height 23.6 ft
    Minimum Loading Height 6.8 ft
    Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 19 ft
    Maximum Vertical Wall Digging Depth 16.9 ft
    Minimum Working Equipment Radius 7.3 ft
    Bucket Digging Force - ISO 22180 lbf
    Stick Digging Force - ISO 13330 lbf
  • Air Conditioning System
    Spec Value
    Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.8 hg of refrigerant which has a CO2 equivalent of 1.144 metric tonnes.
  • Sustainability
    Spec Value
    Recyclability 95%

Standard Equipment


  • Standard and optional equipment may vary. Consult your Cat dealer for details.


  • Rollover Protective Structure (ROPS)


  • Cat Product Link
  • Remote Flash
  • Remote Troubleshoot
  • Cat Grade with 2D
  • Cat Assist
  • Cat Payload
  • 2D E-Fence


  • Maintenance free battery
  • LED chassis light, left-side/right-side boom lights, cab lights
  • Programmable time-delay LED working lights


  • Cat C3.6 single turbo diesel engine
  • One-touch low idle with auto engine speed control
  • Auto engine shutdown
  • 52°C (125°F) high-ambient cooling capacity without de-rate
  • -25°C (-13°F) cold start capability
  • Electric fuel priming pump
  • Variable speed fan
  • Single fuel filtration system
  • Double element air filter with integrated precleaner


  • Boom and stick regeneration circuit
  • Auto hydraulic warm up
  • Auto two speed travel
  • Electric main control valve
  • Boom and stick drift reduction valve
  • Electric boom snubber
  • Auxiliary line support


  • Rear and right-side-view cameras
  • Ground-level engine shutoff switch
  • Service platform with anti-skid plate and countersunk bolts
  • Signaling/warning horn


  • Grouped engine oil and fuel filters
  • Ground-level engine oil dipstick
  • Sampling ports for Scheduled Oil Sampling (S·O·S)


  • Grease lubricated track link
  • Tie down points on base frame
  • 3830 kg (8,440 lb) counterweight

Optional Equipment


  • Standard and optional equipment may vary. Consult your Cat dealer for details.


  • 4.65 m (15'3") Reach boom
  • 2.4 m (7'8") stub + 2.44 (8'0") fore Variable Angle boom
  • 4.27 m (14'4") Power Offset boom
  • 2.2 m (7'3") Reach stick
  • 2.5 m (8'2") Reach stick
  • 2.8 m (9'2") Reach stick
  • 2.8 m (9'2") Thumb Ready stick
  • 3.0 m (9'10") Reach stick


  • Deluxe cab: air suspension heated seat, 254 mm (10") touchscreen monitor
  • Premium cab: air suspension heated and cooled seat, 10" touchscreen monitor
  • Cat Stick Steer
  • Auxiliary relay


  • Cat Grade with Advanced 2D
  • Cat Grade with 3D single GNSS
  • Cat Grade with 3D dual GNSS


  • 360° lighting


  • Boom and stick lowering check valves


  • Cat Detect - People Detection
  • Cat Command remote control
  • 360° visibility
  • Swing alarm
  • Inspection lighting


  • Integrated vehicle health management system


  • 500 mm (20 in) triple grouser shoes
  • 500 mm (20") rubber track shoes
  • 500 mm (20 in) triple grouser shoes with rubber pad
  • 600 mm (24 in) triple grouser shoes
  • 600 mm (24") rubber track shoes
  • 700 mm (28 in) triple grouser shoes
  • 770 mm (30 in) triple grouser shoes
  • 2500 mm (8'2") blade
  • 2600 mm (8'6") blade
  • 2700 mm (8'10") blade