323 Hydraulic Excavator

323 Hydraulic Excavator

High Performance with Speed and Efficiency

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More Comfort – More Performance – More Versatility

Up To 20% Less Fuel Consumption

A precise combination of lower engine speed and a large hydraulic pump delivers top performance while burning less fuel.
Up To 25% Lower Maintenance Costs

Extended and more synchronized maintenance intervals increase uptime and reduce costs compared to the previous model.
Up To 45% More Operating Efficiency

Offering the industry’s highest level of standard factory-equipped technology, including Cat Grade with 2D, Grade with Assist and Payload.
Up To 22% Less CO2 Emissions

The 323 emits up to 22% less CO2 than the previous 323F.

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Engine

Biodiesel Capability	Up to B20¹
Bore	4 in
Displacement	428 in³
Emissions	Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Engine Model	Cat C7.1
Engine Power - ISO 14396	174 HP
Engine Power - ISO 14396 (DIN)	176 hp (metric)
Net Power - ISO 9249	172 HP
Net Power - ISO 9249 (DIN)	175 hp (metric)
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) or 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. Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (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.
Stroke	5 in

Hydraulic System

Main System - Maximum Flow	429 l/min (113 gal/min)
Maximum Pressure - Equipment	5075 psi
Maximum Pressure - Swing	3988 psi
Maximum Pressure - Travel	4974 psi

Swing Mechanism

Maximum Swing Torque	60300 ft·lbf
Swing Speed	11.25 r/min

Weights

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.
Operating Weight	55100 lb

Service Refill Capacities

Cooling System	6.6 gal (US)
DEF Tank	10.8 gal (US)
Engine Oil	6.6 gal (US)
Final Drive - Each	1.3 gal (US)
Fuel Tank Capacity	86.6 gal (US)
Hydraulic System - Including Tank	61.8 gal (US)
Hydraulic Tank	30.4 gal (US)
Swing Drive - Each	1.6 gal (US)

Dimensions

Boom	Reach 5.7 m (18'8")
Bucket	HD 1.30 m³ (1.71 yd³)
Counterweight Clearance	3.4 ft
Ground Clearance	1.5 ft
Handrail Height	9.7 ft
Length to Center of Rollers	12 ft
Shipping Height - Top of Cab	9.7 ft
Shipping Length	31.3 ft
Stick	Reach 2.9 m (9'6")
Tail Swing Radius	9.3 ft
Track Gauge	7.8 ft
Track Length	14.6 ft
Transport Width	10.4 ft

Working Ranges & Forces

Boom	Reach 5.7 m (18'8")
Bucket	HD 1.30 m³ (1.71 yd³)
Bucket Digging Force - ISO	34308 lbf
Maximum Cutting Height	31 ft
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	21.5 ft
Maximum Digging Depth	22.1 ft
Maximum Loading Height	21.3 ft
Maximum Reach at Ground Level	32.4 ft
Maximum Vertical Wall Digging Depth	18.8 ft
Minimum Loading Height	7.1 ft
Stick	Reach 2.9 m (9'6")
Stick Digging Force - ISO	26094 lbf

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).