Caterpillar

323 Hydraulic Excavator

Name: 323 Hydraulic Excavator
Brand: Caterpillar

Net Power – ISO 9249

172 HP

128.5 kW

Operating Weight

55100 lb

25000 kg

Maximum Digging Depth

22.1 ft

6730 mm

Overview

The Cat® 323 delivers power, speed, and high production performance. With more standard technology than previous models, plus reduced fuel and maintenance costs, the Cat 323 has all you need to take your business to the next level.

Media

320 Family Introduction Video

Next Generation Excavator Cat® Connect Technology

Cat® Next Generation Excavators: Walkaround 320 Size Class

Cat® Next Generation Excavators: Vision

Cat® Next Generation Excavators: Manufacturing

Cat® Next Generation Excavators: Design

Stick Steer for Cat® Excavators

Exterior

360° exterior view. Double click on the image to zoom in on any area of the product.

Interior

360° interior view. Double click on the image to zoom in on any area of the product.

Documents

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Features

LATEST FEATURES

PERFORMANCE AND PRODUCTIVITY

TECHNOLOGY THAT GETS WORK DONE

TAKE THE GUESSWORK OUT OF MANAGING YOUR EQUIPMENT

DESIGNED FOR OPERATORS

BUILT FOR LONG TERM PRODUCTION

SIMPLE TO OPERATE

LOWER MAINTENANCE COSTS

SAFELY HOME EVERY DAY

SUSTAINABILITY

Specifications

US Metric

Engine

Spec	Value
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 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 Up to B20¹
Emissions	Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 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. 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. 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.

Hydraulic System

Spec	Value
Main System – Maximum Flow	429 l/min (113 gal/min) 429 l/min (113 gal/min)
Maximum Pressure – Equipment	5075 psi 35000 kPa
Maximum Pressure – Travel	4974 psi 34300 kPa
Maximum Pressure – Swing	3988 psi 27500 kPa

Swing Mechanism

Spec	Value
Swing Speed	11.25 r/min 11.25 r/min
Maximum Swing Torque	60300 ft·lbf 82 kN·m

Weights

Spec	Value
Operating Weight	55100 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. 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.

Service Refill Capacities

Spec	Value
Fuel Tank Capacity	86.6 gal (US) 345 l
Cooling System	6.6 gal (US) 25 l
Engine Oil	6.6 gal (US) 25 l
Swing Drive – Each	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

Dimensions

Spec	Value
Boom	Reach 5.7 m (18'8") Reach 5.7 m (18'8")
Stick	Reach 2.9 m (9'6") Reach 2.9 m (9'6")
Bucket	HD 1.30 m³ (1.71 yd³) 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
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
Transport Width	10.4 ft 3170 mm

Working Ranges & Forces

Spec	Value
Maximum Digging Depth	22.1 ft 6730 mm
Boom	Reach 5.7 m (18'8") Reach 5.7 m (18'8")
Stick	Reach 2.9 m (9'6") Reach 2.9 m (9'6")
Bucket	HD 1.30 m³ (1.71 yd³) 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	34308 lbf 140 kN
Stick Digging Force – ISO	26094 lbf 107 kN

Air Conditioning System

Spec	Value
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). 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).