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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.

Cat Specs


Net Power - ISO 9249
172 HP
Engine Power - ISO 14396
173 HP
4 in
5 in
428 in²
Engine Model
Cat C7.1e TA


Operating Weight
56200 lb

Service Refill Capacities

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

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

Swing Speed
11.25 r/min
Maximum Swing Torque
60300 ft-lb


Track Length
14.7 in
Transport Width
9.9 in
Track Gauge
7.9 in
Shipping Length
31.3 ft
Tail Swing Radius
9.3 ft
Counterweight Clearance
1.7 ft
Ground Clearance
1.7 ft