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Cat® 320 Hydraulic Excavator

Net Power - ISO 9249

172 hp

Operating Weight

49,800 lb

Maximum Digging Depth

22 ft

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SPECIFICATIONS

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.

FULL SPECIFICATIONS

Air Conditioning System

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. If equipped with R134a (Global Warming Potential = 1430), the system contains 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.75 kg (1.7 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons).

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

9.7 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

Engine

Net Power - ISO 9249

172 hp

Net Power - ISO 9249 (DIN)

175 hp (metric)

Engine Model

Cat® C4.4

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

Up to B20¹

Emissions

Meets U.S. EPA Tier 4 Final, EU Stage V, and 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 2,200 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) and are compatible* with 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. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Hydraulic System

Main System - Maximum Flow

429 l/min (113 gal/min)

Maximum Pressure - Equipment

5,075 psi

Maximum Pressure - Equipment - Lift Mode

5,510 psi

Maximum Pressure - Travel

4,974 psi

Maximum Pressure - Swing

3,988 psi

Service Refill Capacities

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)

Sustainability

Recyclability

97%

Swing Mechanism

Swing Speed*

11.25 r/min

Maximum Swing Torque

60,300 lbf·ft

Note (1)

*For CE-marked machine default value may be set lower.

Weights

Operating Weight

49,800 lb

Note

Reach boom, R2.9 (9'6") stick, Heavy Duty (HD) 1.19 m³ (1.56 yd³) bucket 790 mm (31") triple grouser shoes, 4200 kg (10,400 lb) counterweight.

Working Ranges and Forces

Maximum Digging Depth

22 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

32.3 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

31,586 lbf

Stick Digging Force - ISO

23,987 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
- VisionLink™
- Remote Flash
- Remote Troubleshoot
- Work tool recognition and tracking (PL161)
- Cat Grade with 2D
- Cat Assist
- Cat Payload
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
HYDRAULIC SYSTEM
- Boom and stick regeneration circuits
- Auto warm up
- Auto two-speed travel
- Auto dig boost
- Auto heavy lift
- Boom and stick drift reduction valve
SAFETY AND SECURITY
- 2D E-Fence
- Auto hammer stop
- Rearview and right-side-view cameras
- Ground-level engine shutoff switch
- Lockable disconnect switch
- Right-hand handrail and hand hold
- Signaling/warning horn
SERVICE AND MAINTENANCE
- Scheduled Oil Sampling (S·O·S℠) ports
- Ground-level and platform-level engine oil dipsticks
- Integrated vehicle health management system
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') 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
- Operator Protective Guards (OPG)
- Cat Stick Steer
- Auxiliary relay
CAT TECHNOLOGY
- Operator Coaching
- Cat Grade with 2D with Attachment Ready Option (ARO)
- Cat Grade with 3D (single or dual GNSS)
- Cat Grade 3D Ready
- Cat Grade Connectivity
- Cat Advanced Payload
- Cat Tiltrotator (TRS) integration
HYDRAULIC SYSTEM
- Boom and stick lowering check valves
- SmartBoom™ (Europe only)
- Hammer return filter circuit
- Hydraulic efficiency monitoring
- 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 Command (remote control)
- 360° visibility
- Swing alarm
- Inspection lighting
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
- 4200 kg (9,300 lb) counterweight
- 4700 kg (10,400 lb) counterweight