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Medium Excavators

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Metric | Imperial

Medium Excavators

320

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Medium Excavators

320 GC

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Medium Excavators

323

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Engine

Net Power - ISO 9249

157 hp 117 kW

143 hp 107 kW

157 hp 117 kW

Net Power - ISO 9249 (DIN)

159 hp (metric) 159 hp (metric)

145 hp (metric) 145 hp (metric)

159 hp (metric) 159 hp (metric)

Engine Model

Cat® C7.1

Cat® C4.4

Cat® C7.1

Engine Power - ISO 14396

158 hp 118 kW

145 hp 108 kW

158 hp 118 kW

Engine Power - ISO 14396 (DIN)

160 hp (metric) 160 hp (metric)

147 hp (metric) 147 hp (metric)

160 hp (metric) 160 hp (metric)

Bore

4 in 105 mm

Stroke

5 in 135 mm

5 in 127 mm

5 in 135 mm

Displacement

428 in³ 7.01 l

269 in³ 4.4 l

428 in³ 7.01 l

Biodiesel Capability

Up to B20¹

Emissions

Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.

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 1,800 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.

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 2,000 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.

Note (2)

¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% 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. *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

Main System - Maximum Flow

429 l/min (113 gal/min)

Maximum Pressure - Equipment

5075 psi 35000 kPa

Maximum Pressure - Equipment - Lift Mode

5510 psi 38000 kPa

5510 klb/in² 38000 kPa

Maximum Pressure - Travel

4974 psi 34300 kPa

Maximum Pressure - Swing

3988 psi 27500 kPa

3625 psi 25000 kPa

3998 psi 27500 kPa

Swing Mechanism

Swing Speed*

11.3 r/min 11.3 r/min

11.25 r/min 11.25 r/min

Maximum Swing Torque

60300 lbf·ft 82 kN·m

54900 lbf·ft 74.4 kN·m

60300 lbf·ft 82 kN·m

Note (1)

Weights

Operating Weight

47000 lb 21300 kg

45,000 lb 20400 kg

50500 lb 22900 kg

Note

Heavy Duty (HD) Reach boom, HD R2.9 (9'6") stick, HD 1.19 m³ (1.56 yd³) bucket, 600 mm (24") triple grouser shoes, and 3700 kg (8,200 lb) counterweight.

Medium undercarriage, Reach boom, R2.9 (9'6") stick, General Duty (GD) 1.0 m³ (1.31 yd³) bucket, 600 mm (24") triple grouser shoes, and 3.7 mt (8,200 lb) counterweight.

Long undercarriage, Heavy Duty (HD) Reach boom, HD R2.9 (9'6") stick, 1.30 m³ (1.70 yd³) HD bucket, 600 mm (24") HD shoes, and 4200 kg (9,260 lb) counterweight.

Service Refill Capacities

Fuel Tank Capacity

91.1 gal (US) 345 l

Cooling System

6.6 gal (US) 25 l

Engine Oil

6.6 gal (US) 25 l

4 gal (US) 15 l

6.6 gal (US) 25 l

Swing Drive

1.6 gal (US) 6 l

3.2 gal (US) 12 l

Final Drive - Each

1.3 gal (US) 5 l

1.1 gal (US) 4 l

Hydraulic System - Including Tank

61.8 gal (US) 234 l

Hydraulic Tank

30.4 gal (US) 115 l

Dimensions

Boom

HD Reach 5.7 m (18'8")

Reach 5.7 m (18'8")

HD Reach 5.7 m (18'8")

Stick

HD Reach 2.9 m (9'6")

Reach 2.9 m (9'6")

HD Reach 2.9 m (9'6")

Bucket

HD 1.19 m³ (1.56 yd³)

1.0 m³ (1.31 yd³)

HD 1.30 m³ (1.70 yd³)

Shipping Height - Top of Cab

9.7 ft 2960 mm

9.9 ft 2960 mm

Handrail Height

9.8 ft 2950 mm

Shipping Length

31.3 ft 9530 mm

Tail Swing Radius

9.3 ft 2830 mm

Counterweight Clearance

3.4 ft 1050 mm

Ground Clearance

1.5 ft 470 mm

1.7 ft 470 mm

Track Length

14.7 ft 4450 mm

13.9 ft 4250 mm

14.7 ft 4450 mm

Length to Center of Rollers

12 ft 3650 mm

11.3 ft 3450 mm

12 ft 3650 mm

Track Gauge

7.8 ft 2380 mm

Transport Width

9.8 ft 2980 mm

9.9 ft 2980 mm

Working Ranges and Forces

Maximum Digging Depth

22 ft 6720 mm

21.8 ft 6630 mm

22.1 ft 6730 mm

Boom

HD Reach 5.7 m (18'8")

Reach 5.7 m (18'8")

HD Reach 5.7 m (18'8")

Stick

HD Reach 2.9 m (9'6")

Reach 2.9 m (9'6")

HD Reach 2.9 m (9'6")

Bucket

HD 1.19 m³ (1.56 yd³)

1.0 m³ (1.31 yd³)

HD 1.30 m³ (1.70 yd³)

Maximum Reach at Ground Level

32.3 ft 9860 mm

32.1 ft 9770 mm

32.4 ft 9870 mm

Maximum Cutting Height

30.7 ft 9370 mm

31 ft 9440 mm

31 ft 9450 mm

Maximum Loading Height

21.3 ft 6490 mm

21.6 ft 6580 mm

21.3 ft 6480 mm

Minimum Loading Height

7.1 ft 2170 mm

7.4 ft 2260 mm

7.1 ft 2160 mm

Maximum Depth Cut for 2440 mm (8 ft) Level Bottom

21.5 ft 6550 mm

21.2 ft 6460 mm

21.6 ft 6560 mm

Maximum Vertical Wall Digging Depth

17 ft 5190 mm

19.7 ft 6010 mm

18.5 ft 5620 mm

Bucket Digging Force - ISO

33811 lbf 150 kN

29007 lbf 129 kN

31505 lbf 140 kN

Stick Digging Force - ISO

23911 ft·lbf 106 kN

22301 lbf 99 kN

23962 lbf 107 kN

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 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).