The Cat® 323 moves more material faster with powerful hydraulics and standard Cat technologies for improved digging performance. Built for roadwork, heavy utility, and mass excavation, it helps reduce rework, lower fuel consumption, and cut cost per ton.
A precise combination of low engine speed and a large hydraulic pump deliver top performance, helping to burn less fuel.
Extended and synchronized maintenance intervals help you get more done at a lower cost compared to the previous model.
Standard Cat Grade with 2D, Cat Payload, Auto Dig Boost* , and Auto Heavy Lift* help operators dig, load, and lift with accuracy, reducing rework and boosting daily productivity.
* Not available on Super Long Reach configurations.
The 323 emits lower CO2 emissions compared to the previous 323F.
| Net Power - ISO 9249 | 172 hp |
|---|---|
| Net Power - ISO 9249 (DIN) | 175 hp (metric) |
| Engine Model | Cat® C7.1 |
| Engine Power - ISO 14396 | 174 hp |
| Engine Power - ISO 14396 (DIN) | 176 hp (metric) |
| Bore | 4 in |
| Stroke | 5 in |
| Displacement | 428 in³ |
| Biodiesel Capability | Up to B20¹ |
| Emissions | 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. |
| Note (2) | ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with 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. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). |
| Main System - Maximum Flow | 429 l/min (113 gal/min) |
|---|---|
| Maximum Pressure - Equipment | 5075 psi |
| Maximum Pressure - Equipment - Lift Mode | 5510 psi |
| Maximum Pressure - Travel | 4974 psi |
| Maximum Pressure - Swing | 3988 psi |
| Swing Speed* | 11.25 r/min |
|---|---|
| Maximum Swing Torque | 60300 lbf·ft |
| Note (1) | *For CE-marked machine default value may be set lower. |
| Operating Weight | 55100 lb |
|---|---|
| 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. |
| Fuel Tank Capacity | 91.1 gal (US) |
|---|---|
| Cooling System | 6.6 gal (US) |
| Engine Oil | 6.6 gal (US) |
| Swing Drive | 1.6 gal (US) |
| Final Drive - Each | 1.3 gal (US) |
| Hydraulic System - Including Tank | 61.8 gal (US) |
| Hydraulic Tank | 30.4 gal (US) |
| DEF Tank | 10.8 gal (US) |
| Boom | Reach 5.7 m (18'8") |
|---|---|
| Stick | Reach 2.9 m (9'6") |
| Bucket | HD 1.30 m³ (1.71 yd³) |
| Shipping Height - Top of Cab | 9.7 ft |
| Handrail Height | 9.7 ft |
| Shipping Length | 31.3 ft |
| Tail Swing Radius | 9.3 ft |
| Counterweight Clearance | 3.4 ft |
| Ground Clearance | 1.5 ft |
| Track Length | 14.6 ft |
| Length to Center of Rollers | 12 ft |
| Track Gauge | 7.8 ft |
| Transport Width | 10.4 ft |
| Maximum Digging Depth | 22.1 ft |
|---|---|
| Boom | Reach 5.7 m (18'8") |
| Stick | Reach 2.9 m (9'6") |
| Bucket | HD 1.30 m³ (1.71 yd³) |
| Maximum Reach at Ground Level | 32.4 ft |
| Maximum Cutting Height | 31 ft |
| Maximum Loading Height | 21.3 ft |
| Minimum Loading Height | 7.1 ft |
| Maximum Depth Cut for 2440 mm (8 ft) Level Bottom | 21.5 ft |
| Maximum Vertical Wall Digging Depth | 18.8 ft |
| Bucket Digging Force - ISO | 31496 lbf |
| Stick Digging Force - ISO | 23987 lbf |
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. If equipped with 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). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.75 kg (1.7 lb) of refrigerant which has a CO2 equivalent of 0.001 metric tonnes (0.001 tons). |
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