Caterpillar 321 Excavator
Powered by the reliable Cat® C3.6 engine, the Cat® 321 excavator delivers high torque and fast cycle times to maximize productivity. Reinforced Cat structures extend machine life and withstand the toughest conditions, while the latest cab design puts operator safety and comfort first. Every core system undergoes rigorous testing, so you can count on consistent, reliable performance shift after shift.
Cat® 324 Excavator
The Cat® 324 excavator is a medium hydraulic machine. It features a net power of 150 hp (108 kW), an operating weight of 22,700 kg, and a maximum digging depth of 6,310 mm. It runs on a Cat C7.1 engine with advanced electrohydraulics and an Eco mode to save fuel.
Performance You Can Feel
A reliable Cat® C3.6 engine delivers high torque and fast cycle times. The integrated Engine Control Module (ECM) ensures smooth, precise operation. Advanced electrohydraulic (EH) system optimize fuel consumption without sacrificing digging force or controllability.
Built To Last
Reinforced Cat structures are engineered to tackle demanding applications, extending machine life in harsh environments. Two undercarriage options provide excellent stability and long-lasting durability on rugged terrain. Every system is tested and proven to perform through long, demanding shifts with a wide range of work tools.
Less Downtime. Low Costs.
Extended, synchronized service intervals reduce downtime and keep maintenance costs low. Shared Cat components simplify maintenance and increase parts availability, especially across mixed fleets. The latest cab design helps improve operator visibility, control, and comfort.
Simple To Operate
Start the engine with a push button. The in-cab high-resolution 203 mm (8 in) touchscreen monitor is easy to use, intuitive, and user-friendly. Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu. The machine’s electrohydraulic system allows accurate bucket control for maximum precision.
Product Specifications for 321
| Net Power – ISO 9249 | 96 kW |
|---|---|
| Net Power – ISO 9249 (DIN) | 131 hp (metric) |
| Engine Model | Cat® C3.6 |
| Engine Power – ISO 14396 | 100 kW |
| Engine Power – ISO 14396 (DIN) | 136 hp (metric) |
| Bore | 98 mm |
| Stroke | 120 mm |
| Displacement | 3.6 l |
| Biodiesel Capability | Up to B20¹ |
| Emissions | Non-certified emission engine. |
| 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 2,000 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture. |
| Note (2) | ¹Cat® engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% 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. *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. |
Operating Weight 19300 kg
Note 4.1 m (13’5″) Standard undercarriage, 5.7 m (18’8″) Reach boom, R2.25 (7’5″) stick, 1 m3 (1.31 yd3) General Duty (GD) bucket, 600 mm (24″) triple grouser track shoes and 3650 kg (8,050 lb) counterweight.
Maximum Digging Depth 5970 mm
Boom Reach 5.7 m (18’8″)
Stick Reach 2.25 m (7’5″)
Bucket GD 1 m³ (1.31 yd³)
Maximum Reach at Ground Level 9150 mm
Maximum Cutting Height 9120 mm
Maximum Loading Height 6250 mm
Minimum Loading Height 2920 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 5760 mm
Maximum Vertical Wall Digging Depth 5360 mm
Bucket Digging Force – ISO 135 kN
Stick Digging Force – ISO 119 kN
Main System – Maximum Flow 315 l/min (83 gal/min)
Maximum Pressure – Equipment 35000 kPa
Maximum Pressure – Travel 35000 kPa
Maximum Pressure – Swing 25000 kPa
Swing Speed 10 r/min
Maximum Swing Torque 61 kN·m
Fuel Tank Capacity 370 l
Cooling System 25 l
Engine Oil 11 l
Swing Drive – Each 6 l
Final Drive – Each 6 l
Hydraulic System – Including Tank 218 l
Hydraulic Tank 115 l
Boom Reach 5.7 m (18’8″)
Stick Reach 2.25 m (7’5″)
Bucket GD 1 m³ (1.31 yd³)
Shipping Height – Top of Cab 3250 mm
Handrail Height 3010 mm
Shipping Length 9570 mm
Tail Swing Radius 2830 mm
Counterweight Clearance 1020 mm
Ground Clearance 430 mm
Track Length 4080 mm
Length to Center of Rollers 3270 mm
Track Gauge 2200 mm
Transport Width 2800 mm