317 GC Hydraulic Excavator

The Cat® 317 GC Excavator offers job-matched performance and world-class versatility. A large working envelope and expanded work tool offering help you complete your work quickly and efficiently. Combined with fuel-saving features, longer maintenance intervals, and simplified maintenance points, the 317 GC provides the reliability you expect at the low cost-per-hour you need.


Net Power - ISO 9249 119HP
Engine Model Cat C3.6
Engine Power - ISO 14396 121HP
Bore 4in
Stroke 5in
Displacement 220in³


Operating Weight 38000lb

Working Ranges & Forces

Maximum Digging Depth 21ft
Boom Reach 5.1 m (16'9")
Stick Reach R2.9 m (9'6")
Bucket GD 0.76 m³ (0.99 yd³)
Maximum Reach at Ground Level 29.6ft
Maximum Cutting Height 29.1ft
Maximum Loading Height 20.6ft
Minimum Loading Height 6.5ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 20.2ft
Maximum Vertical Wall Digging Depth 16.3ft
Minimum Working Equipment Radius 9.6ft
Bucket Digging Force - ISO 27650lbf
Stick Digging Force - ISO 16860lbf

Hydraulic System

Main System - Maximum Flow 296 L/min (78 gal/min)
Maximum Pressure - Equipment 5076psi
Maximum Pressure - Travel 5076psi
Maximum Pressure - Swing 3741psi

Swing Mechanism

Swing Speed 8.7r/min
Maximum Swing Torque 44991ft·lbf

Service Refill Capacities

Fuel Tank Capacity 71.6gal (US)
Cooling System 5.8gal (US)
Engine Oil 2.9gal (US)
Final Drive - Each 1.6gal (US)
Hydraulic System - Including Tank 24.8gal (US)
Hydraulic Tank 23gal (US)
DEF Tank 5.9gal (US)


Boom Reach 5.1 m (16'9")
Stick Reach R2.9 m (9'6")
Bucket GD 0.76 m³ (0.99 yd³)
Shipping Height - Top of Cab 9.6ft
Handrail Height 9.6ft
Shipping Length 28.1ft
Tail Swing Radius 8.2ft
Counterweight Clearance 3.3ft
Ground Clearance 1.4ft
Track Length 13ft
Length to Center of Rollers 10.4ft
Track Gauge 6.5ft
Transport Width 8.5ft

Air Conditioning System

Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.9 hg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.

Standard Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Boom And Sticks
    • 5.1 m (16'9") Reach Boom
  • Cab
    • Rollover protective structure (ROPS)
    • Comfort Cab: mechanical suspension seat, 203 mm (8") LCD touchscreen monitor
  • Cat Technologies
    • Cat Product Link
    • Remote Flash
    • Remote Troubleshoot
    • Auto hammer stop
  • Electrical System
    • Maintenance free battery
    • LED chassis light and left-side boom light
    • Programmable time-delay LED working lights
    • Centralized electrical disconnect switch
  • Engine
    • Cat C3.6 single turbo diesel engine
    • Two selectable modes: Power, Smart
    • Automatic engine speed control
    • Automatic engine shutdown
    • Electric fuel priming pump
    • Electric cooling fans
    • Single fuel filtration system with water separator and indicator
    • Sealed double element air filter with integrated precleaner
    • Biodiesel capability up to B20
  • Hydraulic System
    • Boom and stick regeneration circuits
    • Auto hydraulic warm up
    • Auto two-speed travel
    • Electric main control valve
    • Boom and stick drift reduction valve
    • Boom and stick lowering check valve
    • Element-type main hydraulic filter
    • Single-type electronic main pump
  • Safety And Security
    • Rear and right-side-view cameras
    • Ground-level engine shutoff switch
    • Service platform with anti-skid plate and countersunk bolts
    • Signaling/warning horn
    • Hydraulic lock out lever
  • Service And Maintenance
    • Side entry to service platform
    • Grouped engie oil and fuel filters
    • Ground-level engine oil dipstick
    • Sampling ports for Scheduled Oil Sampling (S·O·S)
  • Undercarriage And Structures
    • Grease lubricated track link
    • Tie down points on base frame
    • ISO 15818:2017 Tie down points on base frame

Optional Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Boom And Sticks
    • 2.6 m (8'6") Reach stick
    • 2.9 m (9'6") Reach stick
    • 2.9 m (9'6") Thumb ready stick
    • 3.1 m (10'2") Reach stick
  • Electrical System
    • LED chassis light, right-side boom light and cab lights
  • Engine
    • -18°C (-0°F) cold start capability
    • -25°C (-13°F) cold start capability
  • Safety And Security
    • Swing alarm
    • Inspection lighting
  • Service And Maintenance
    • Integrated vehicle health management system
  • Undercarriage And Structures
    • 500 mm (20") triple grouser track shoes
    • 600 mm (24") triple grouser track shoes
    • 600 mm (24") rubber track shoes
    • 700 mm (28 in) triple grouser track shoes
    • 790 mm (31") triple grouser track shoes
    • 3.05 mt (6,720 lb) counterweight
    • 3.57 mt (7,870 lb) counterweight