Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

323 Medium Hydraulic Excavator

323

Medium Excavators
The Cat® 323 moves more material faster with powerful hydraulics and standard Cat technologies for improved digging performance. Built for roadwork, heavy utility, and mass excavation, it helps reduce rework, lower fuel consumption, and cut cost per ton.
Net Power - ISO 9249
172 hp/128.5 kW
Net Power - ISO 9249 (DIN)
175 hp (metric)/175 hp (metric)
Engine Model
Cat® C7.1
Engine Power - ISO 14396
174 hp/129.4 kW

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Net Power - ISO 9249
172 hp 128.5 kW
Net Power - ISO 9249 (DIN)
175 hp (metric) 175 hp (metric)
Engine Model
Cat® C7.1
Engine Power - ISO 14396
174 hp 129.4 kW
Engine Power - ISO 14396 (DIN)
176 hp (metric) 176 hp (metric)
Bore
4 in 105 mm
Stroke
5 in 135 mm
Displacement
428 in³ 7.01 l
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).
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
Maximum Pressure - Travel
4974 psi 34300 kPa
Maximum Pressure - Swing
3988 psi 27500 kPa
Swing Speed*
11.25 r/min 11.25 r/min
Maximum Swing Torque
60300 lbf·ft 82 kN·m
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.
Operating Weight
55,100 lb 25000 kg
Note
Long undercarriage, Reach boom, R2.9 (9'6"), Reach stick, Heavy Duty (HD) 1.38 m³ (1.81 yd³) bucket, 790 mm (31") HD triple grouser track shoes and 5,400 kg (11,900 lb) counterweight.
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
Swing Drive
1.6 gal (US) 6 l
Final Drive - Each
1.3 gal (US) 5 l
Hydraulic System - Including Tank
61.8 gal (US) 234 l
Hydraulic Tank
30.4 gal (US) 115 l
DEF Tank
10.8 gal (US) 41 l
Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
HD 1.30 m³ (1.71 yd³)
Shipping Height - Top of Cab
9.7 ft 2960 mm
Handrail Height
9.7 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
Track Length
14.6 ft 4450 mm
Length to Center of Rollers
12 ft 3650 mm
Track Gauge
7.8 ft 2380 mm
Transport Width
10.4 ft 3170 mm
Maximum Digging Depth
22.1 ft 6730 mm
Boom
Reach 5.7 m (18'8")
Stick
Reach 2.9 m (9'6")
Bucket
HD 1.30 m³ (1.71 yd³)
Maximum Reach at Ground Level
32.4 ft 9870 mm
Maximum Cutting Height
31 ft 9450 mm
Maximum Loading Height
21.3 ft 6480 mm
Minimum Loading Height
7.1 ft 2160 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom
21.5 ft 6560 mm
Maximum Vertical Wall Digging Depth
18.8 ft 5740 mm
Bucket Digging Force - ISO
31496 lbf 140 kN
Stick Digging Force - ISO
23987 lbf 107 kN
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).

Equipment

Compatible Attachments

Impulse Force
16508.0 lb/74.0 kN
Cycles/Minimum
2200
Impulse Force
24669.0 lb/110.0 kN
Cycles/Minimum
2200
Width
48 in/1200 mm
Capacity
1.24 yd³/0.95 m³
Width
24 in/600 mm
Capacity
0.51 yd³/0.39 m³
Width
36 in/900 mm
Capacity
0.84 yd³/0.65 m³
Machine Class
18-24 ton Excavators
Weight
1,649 lb/748 kg
Cycle Time - Open
1.9 s/1.9 s
Cycle Time - Close
1.3 s/1.3 s
Minimum Carrier Weight
19 ton (US)/19 ton (US)
Maximum Carrier Weight
23 ton (US)/23 ton (US)
Blows per Minute
370 to 800
Minimum Operating Weight
2354 lb/1070 kg
Blows per Minute
350 to 620
Minimum Operating Weight
3256 lb/1480 kg
Blows per Minute
320 to 600
Minimum Operating Weight
3850 lb/1750 kg
Cycle Time - Open
1.6 s/1.6 s
Cycle Time - Close
1.0 s/1.0 s
Cycle Time - Open
1.6 s/1.6 s
Cycle Time - Close
1.0 s/1.0 s
Cycle Time - Open
1.6 s/1.6 s
Cycle Time - Close
1 s/1 s
Cycle Time - Open
1.8 s/1.8 s
Cycle Time - Close
1.2 s/1.2 s
Cycle Time - Open
1.6 s/1.6 s
Cycle Time - Close
1 s/1 s
Cycle Time - Open
1.8 s/1.8 s
Cycle Time - Close
1.2 s/1.2 s
Cycle Time - Open
1.6 s/1.6 s
Cycle Time - Close
1 s/1 s
Cycle Time - Open
1.8 s/1.8 s
Cycle Time - Close
1.2 s/1.2 s
Motor
Variable Torque Hydraulic Piston Motor
Overall Width
74.0 in/1871 mm
Motor
Variable Torque Hydraulic Piston Motor
Overall Width
77.6 in/1871 mm
Cycle Time - Open
1.6 s/1.6 s
Cycle Time - Close
1 s/1 s
Cycle Time - Open
1.8 s/1.8 s
Cycle Time - Close
1.2 s/1.2 s
Width
48 in/1200 mm
Capacity
1.56 yd³/1.19 m³
Width
60 in/1500 mm
Capacity
2.06 yd³/1.58 m³
Blows per Minute
450 to 800
Minimum Operating Weight
3098 lb/1405 kg
Blows per Minute
400 to 800
Minimum Operating Weight
3849 lb/1746 kg
Blows per Minute
350 to 700
Minimum Operating Weight
5503 lb/2496 kg
Grapple Area
0.72 yd³/550 l
Weight
2888 lb/1310 kg
Grapple Area
0.78 yd³/600 l
Weight
2917 lb/1323 kg
Grapple Area
0.98 yd³/750 l
Weight
3940 lb/1787 kg

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