320

320
Caterpillar
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The Cat® 320 Hydraulic Excavator, weighing up to 49,800 (20 tons), delivers productive performance for site prep, trenching, utility installation, excavation, and truck loading with integrated Cat Grade and Cat Payload technologies.
The Cat® 320 raises the bar with fuel-saving hydraulics, advanced technology, and an operator-focused cab, delivering lower fuel and maintenance costs and higher productivity for site prep, truck loading, trenching, and utility work.

Brochures and Spec Sheets

Gallery

320 320 320 320 320

Specifications

Specification Value Unit
Net Power - ISO 9249 172 hp
Net Power - ISO 9249 (DIN) 175 hp (metric)
Engine Model
Engine Power - ISO 14396 174 hp
Engine Power - ISO 14396 (DIN) 176 hp (metric)
Bore 4 in
Stroke 5 in
Displacement 269 in³
Biodiesel Capability
Emissions
Note (1)
Note (2)
Main System - Maximum Flow
Maximum Pressure - Equipment 5075 psi
Maximum Pressure - Equipment - Lift Mode 5510 psi
Maximum Pressure - Travel 4974 psi
Maximum Pressure - Swing 3988 psi
Swing Speed* 11.25 r/min
Maximum Swing Torque 60300 lbf·ft
Note (1)
Operating Weight 49,800 lb
Note
Fuel Tank Capacity 91.1 gal (US)
Cooling System 6.6 gal (US)
Engine Oil 4 gal (US)
Swing Drive 1.6 gal (US)
Final Drive - Each 1.1 gal (US)
Hydraulic System - Including Tank 61.8 gal (US)
Hydraulic Tank 30.4 gal (US)
DEF Tank 10.3 gal (US)
Boom
Stick
Bucket
Shipping Height - Top of Cab 9.7 ft
Handrail Height 9.7 ft
Shipping Length 31.3 ft
Tail Swing Radius 9.3 ft
Counterweight Clearance 3.4 ft
Ground Clearance 1.5 ft
Track Length 14.6 ft
Length to Center of Rollers 11.7 ft
Track Gauge 7.8 ft
Transport Width 9.8 ft
Maximum Digging Depth 22 ft
Boom
Stick
Bucket
Maximum Reach at Ground Level 32.3 ft
Maximum Cutting Height 30.7 ft
Maximum Loading Height 21.3 ft
Minimum Loading Height 7.1 ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 21.5 ft
Maximum Vertical Wall Digging Depth 17 ft
Bucket Digging Force - ISO 31586 lbf
Stick Digging Force - ISO 23987 lbf
Air Conditioning
Recyclability

Standard Equipment

  • NOTE
  • CAB
  • CAT TECHNOLOGY
  • ELECTRICAL SYSTEM
  • ENGINE
  • HYDRAULIC SYSTEM
  • SAFETY AND SECURITY
  • SERVICE AND MAINTENANCE
  • UNDERCARRIAGE AND STRUCTURES

Optional Equipment

  • NOTE
  • BOOMS AND STICKS
  • CAB
  • CAT TECHNOLOGY
  • HYDRAULIC SYSTEM
  • SAFETY AND SECURITY
  • UNDERCARRIAGE AND STRUCTURES