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323 Hydraulic Excavator

323 Hydraulic Excavator

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.

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Net Power - ISO 9249172HP

Net Power - ISO 9249 (DIN)175hp (metric)

Engine ModelCat C7.1

Engine Power - ISO 14396174HP

Engine Power - ISO 14396 (DIN)176hp (metric)




Biodiesel CapabilityUp to B20¹

EmissionsMeets 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

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

Operating Weight55100lb

NoteLong 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.

Maximum Digging Depth22.1ft

BoomReach 5.7 m (18'8")

StickReach 2.9 m (9'6")

BucketHD 1.30 m³ (1.71 yd³)

Maximum Reach at Ground Level32.4ft

Maximum Cutting Height31ft

Maximum Loading Height21.3ft

Minimum Loading Height7.1ft

Maximum Depth Cut for 2440 mm (8 ft) Level Bottom21.5ft

Maximum Vertical Wall Digging Depth18.8ft

Bucket Digging Force - ISO34308lbf

Stick Digging Force - ISO26094lbf

Main System - Maximum Flow429 l/min (113 gal/min)

Maximum Pressure - Equipment5075psi

Maximum Pressure - Travel4974psi

Maximum Pressure - Swing3988psi

Swing Speed11.25r/min

Maximum Swing Torque60300ft·lbf

Fuel Tank Capacity86.6gal (US)

Cooling System6.6gal (US)

Engine Oil6.6gal (US)

Swing Drive - Each1.6gal (US)

Final Drive - Each1.3gal (US)

Hydraulic System - Including Tank61.8gal (US)

Hydraulic Tank30.4gal (US)

DEF Tank10.8gal (US)

BoomReach 5.7 m (18'8")

StickReach 2.9 m (9'6")

BucketHD 1.30 m³ (1.71 yd³)

Shipping Height - Top of Cab9.7ft

Handrail Height9.7ft

Shipping Length31.3ft

Tail Swing Radius9.3ft

Counterweight Clearance3.4ft

Ground Clearance1.5ft

Track Length14.6ft

Length to Center of Rollers12ft

Track Gauge7.8ft

Transport Width10.4ft

Air ConditioningThe 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).



Standard and optional equipment may vary. Consult your Cat dealer for details.


Standard and optional equipment may vary. Consult your Cat dealer for details.


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 in) LCD touchscreen monitor


Cat Stick Steer



Remote Flash

Remote Troubleshoot

Cat Grade 2D

Cat Assist

Cat Payload


VisionLink Productivity

Cat Grade Connectivity

Cat Grade 2D with Attachment Ready Option (ARO)

Cat Grade 3D single GNSS

Cat Grade 3D dual GNSS

Cat Tilt Rotator (TRS) Integration

Operator Coaching


Two 1,000 CCA maintenance-free batteries

Programmable time-delay LED working lights

LED chassis light, left-hand/right-hand boom lights, cab lights


Cat 7.1 single turbo diesel engine

Three selectable power modes

Automatic engine speed control

46°C (115°F) high-ambient cooling capacity (Europe only)

52°C (125°F) high-ambient cooling capacity

-18°C (0°F) cold start capability

Double element air filter with integrated precleaner

Reversing electric cooling fans


-32°C (-25°F) cold start capability


Boom and stick regeneration circuits

Auto hydraulic warm up

Auto two-speed travel

Boom and stick drift reduction valve

Auto dig boost

Auto heavy lift


Boom and stick lowering check valves

SmartBoom (Europe only)

Hammer return filter circuit

Advanced tool control (two pump, one/two way high-pressure flow)

Hydraulic efficiency monitoring

Medium-pressure circuit

Quick coupler circuit for Cat Pin Grabber


2D E-Fence

Auto hammer stop

Rearview camera

Right-side-view camera

Lockable disconnect switch

Ground-level engine shutoff switch

Right-hand handrail and handhold

Signaling/warning horn


Cat Command (remote control)

360° visibility

Inspection lighting


Sampling ports for Scheduled Oil Sampling (S·O·S℠)

Ground-level and platform-level engine oil dipsticks

Integrated vehicle health management system


Tie-down points on base frame


600 mm (24") single grouser shoes

600 mm (24") HD double grouser shoes

600 mm (24") HD triple grouser shoes

700 mm (28") HD triple grouser shoes

790 mm (31") HD triple grouser shoes

900 mm (35") HD triple grouser shoes

4200 kg (9,300 lb) counterweight


5.7 m (18'8") Reach boom

5.7 m (18'8") HD Reach boom

2.7 m (8'10") stub + 3.3 m (10'10") fore, Variable Angle boom

8.85 m (29'0") 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 (Chile, Turkey only)

2.9 m (9'6") HD Reach stick (Chile, Turkey only)

3.9 m (12'10") Reach stick

2.9 m (9'6") HD Thumb Ready Reach stick

6.28 m (20'7") Super Long Reach stick

View used options

See Available Used options



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