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320 Hydraulic Excavator

Net Power - ISO 9249

172 HP

Operating Weight

49,600 lb

Maximum Digging Depth

22.1 ft

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SPECIFICATIONS

The Cat® 320 raises the bar for efficiency and fuel economy in this size class. With the industry’s highest level of standard factory technology, a new cab focused on operator comfort, plus lower fuel and maintenance costs, the 320 will set a new pace for productivity and profit in your operation.

FULL SPECIFICATIONS

Dimensions

Boom

Reach 5.7 m (18'8")

Stick

Reach 2.9 m (9'6")

Bucket

1.19 m ³ (1.56 yd³)

Shipping Height - Top of Cab

9.8 ft

Handrail Height

9.8 ft

Shipping Length

31 ft

Tail Swing Radius

9.3 ft

Counterweight Clearance

3.4 ft

Ground Clearance

1.6 ft

Track Length

14.7 ft

Length to Center of Rollers

12 ft

Track Gauge

7.9 ft

Transport Width

9.8 ft

Engine

Net Power - ISO 9249

172 HP

Engine Model

Cat C4.4e TTA

Engine Power - ISO 14396

174 HP

Bore

4 in

Stroke

5 in

Displacement

269 in³

Hydraulic System

Main System - Maximum Flow

429 l/min (113 gal/min)

Maximum Pressure - Equipment

5,075 psi

Maximum Pressure - Travel

4,974 psi

Maximum Pressure - Swing

3,988 psi

Service Refill Capacities

Fuel Tank Capacity

86.6 gal (US)

Cooling System

6.6 gal (US)

Engine Oil

4 gal (US)

Swing Drive - Each

3.2 gal (US)

Final Drive - Each

1.3 gal (US)

Hydraulic System - Including Tank

61.8 gal (US)

Hydraulic Tank

30.4 gal (US)

DEF Tank

10.3 gal (US)

Swing Mechanism

Maximum Swing Torque

60,300 ft·lbf

Weights

Operating Weight

49,600 lb

Working Ranges & Forces

Maximum Digging Depth

22.1 ft

Boom

Reach 5.7 m (18'8")

Stick

Reach 2.9 m (9'6")

Bucket

1.19 m ³ (1.56 yd³)

Maximum Reach at Ground Level

32.4 ft

Maximum Cutting Height

30.8 ft

Maximum Loading Height

21.4 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

38,811 lbf

Stick Digging Force - ISO

23,911 lbf

STANDARD EQUIPMENT

NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
CAB
- Rollover protective structure (ROPS)
- Air-adjustable seat with heat (Deluxe only)
- Auto-adjustable seat with heat and air ventilation (Premium only)
- High-resolution 254 mm (10 inch) LCD touchscreen monitor
CAT TECHNOLOGY
- Cat Product Link™
- Remote Flash
- Remote Troubleshoot
- Cat Grade with 2D
- Cat Assist
- Cat Payload
- E-Fence
ELECTRICAL SYSTEM
- Two 1,000 CCA maintenance-free batteries
- Programmable time-delay LED working lights
- LED chassis light, left-hand/right-hand boom lights, cab lights
ENGINE
- Cat C4.4 twin turbo diesel engine
- Three selectable power modes
- Automatic engine speed control
- 52°C (126°F) ambient cooling capacity
- -32°C (-25°F) cold start capability
- Double element air filter with integrated precleaner
- Reversing electric cooling fans
- Biodiesel capability up to B20
HYDRAULIC SYSTEM
- Boom and stick regeneration circuits
- Auto warm up
- Auto two-speed travel
- Auto dig boost
- Boom and stick drift reduction valve
SAFETY AND SECURITY
- Rearview and right-side-view cameras
- Ground-level engine shutoff switch
- Right-hand handrail and hand hold
- Signaling/warning horn
SERVICE AND MAINTENANCE
- Sampling ports for Scheduled Oil Sampling (S·O·S)
- Ground-level and platform-level engine oil dipsticks
UNDERCARRIAGE AND STRUCTURES
- Tie-down points on base frame

OPTIONAL EQUIPMENT

NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
BOOMS AND STICKS
- 5.7 m (18'8") Reach boom
- 5.7 m (18'8") HD Reach boom
- 2.8 m (9'2") Stub + 3.3 m (10'10") Fore, VA boom
- 8.85 m (29'0") Super Long Reach boom
- 2.5 m (8'2") Reach stick
- 2.9 m (9'6") Reach stick
- 2.5 m (8'2") HD Reach stick
- 2.9 m (9'6") HD Reach stick
- 2.9 m (9'6") HD Thumb Ready Reach stick
- 6.28 m (20'7") Super Long Reach stick
CAB
- Cat Stick Steer
- Auxiliary relay
CAT TECHNOLOGY
- Cat Grade with Advanced 2D
- Cat Grade with 3D single GNSS
- Cat Grade with 3D dual GNSS
HYDRAULIC SYSTEM
- Boom and stick lowering check valves
- Hammer return filter circuit
- Advanced tool control (two pump, one/two way high-pressure flow)
- Medium-pressure circuit
- Quick coupler circuit for Cat pin grabber
SAFETY AND SECURITY
- Cat Detect People Detection
- 360° visibility
- Cat Command remote control
- Swing alarm
- Inspection lighting
SERVICE AND MAINTENANCE
- Integrated vehicle health management system
UNDERCARRIAGE AND STRUCTURES
- 600 mm (24") triple grouser shoes
- 700 mm (28") triple grouser shoes
- 790 mm (31") triple grouser shoes
- 900 mm (35") triple grouser shoes
- 4.2 mt (9,300 lb) counterweight
- 4.7 mt (10,400 lb) counterweight