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323 Hydraulic Excavator

323 Hydraulic Excavator

At a Glance

Engine Model
Cat C7.1 ACERT
Net Flywheel Power
162 HP
Maximum Drawbar Pull
Maximum Travel Speed
3.5 mile/h
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The Cat® 323 excavator has the speed, efficiency, and power for your heavy-duty applications requiring maximum productivity. You get built-in Cat GRADE with 2D, Grade Assist, and Payload as standard equipment right from the factory — boosting your operator efficiency by up to 45%. Combine these features with a new cab, longer maintenance intervals and reduced fuel consumption that lower maintenance costs by up to 15% and fuel consumption by up to 20% and you have an absolutely low-cost-per-unit-of-production excavator built for your heavy-duty applications.


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Engine Model Cat C7.1 ACERT
Net Flywheel Power 162HP
Bore 4in
Stroke 5in
Displacement 428in³
Gross Power - SAE J1995 164HP
Net Power - SAE J1349 162HP
Engine RPM - Operation 1650r/min
Engine RPM - Travel 1800r/min


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Maximum Drawbar Pull 45614
Maximum Travel Speed 3.5mile/h
Maximum Gradeability 35°--70%

Service Refill Capacities

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


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Operating Weight - Europe/Australia & New Zealand 53790lb
Note (1) Long Undercarriage, HD Reach Boom, R 2.9 HD Thumb Ready Reach Stick, HD 1.38 m3 bucket and 790mm HD TG shoes, 5.4mton( 11,900lb) Counterweight.
Operating Weight - North America 56200lb
Note (2) Long undercarriage, Reach boom, R2.9 (9'6") stick, HD 1.38 m3 (1.81 yd3) bucket and 600mm (24 in) triple grouser shoes, 4.2 mt (9,300 lb) counterweight.

Hydraulic System

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Maximum Pressure - Equipment - Normal 5075psi
Main System - Maximum Flow - Total 113gal/min
Maximum Pressure - Swing 3886psi
Maximum Pressure - Travel 4974psi

Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

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Transport Width - 900 mm (35 in) Shoes 10.8ft
Counterweight Clearance 3.4ft
Note (1) With HD 1.3m3 bucket and 900 mm shoes.
Note (2) Reach boom as same dimensions as HD reach boom
Shipping Height 10.2ft
Shipping Length 31.3ft
Track Gauge 7.8ft
Track Length - Center of Rollers 12ft
Transport Width - 600 mm (24 in) Shoes 9.8ft
Transport Width - 700 mm (28 in) Shoes 10.1ft
Transport Width - 790 mm (31 in) Shoes 10.4ft


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Maximum Swing Torque 54440ft·lbf
Swing Speed 11.25r/min

Dimensions - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

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Ground Clearance 1.5ft
Tail Swing Radius 9.3ft

Working Ranges - Reach Boom - 5.7 m (18'8"); R2.9 (9'6") Stick

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Maximum Cutting Height 31ft
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 21.5ft
Maximum Digging Depth 22.1ft
Maximum Loading Height 21.3ft
Maximum Reach - Ground Level 32.4ft
Maximum Vertical Wall Digging Depth 18.8ft
Minimum Loading Height 7.1ft