Key Specs
The Cat® 320 Hydraulic Excavator, weighing up to 49,800 lbs (20 tons), delivers productive performance for site prep, trenching, utility installation, excavation, and truck loading with integrated Cat Grade and Cat Payload technologies.
Move more material with hydraulics and engine performance designed to help reduce fuel use while delivering strong digging performance.
Keep work moving with maintenance intervals designed to reduce service interruptions, support uptime, and lower operating costs.
Factory-equipped Cat technologies help operators dig accurately, load efficiently, and move more material every shift.
The Cat 320 helps reduce CO2 emissions while delivering the performance needed for demanding applications.
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| Net Power - ISO 9249 | 172 hp 128.5 kW |
| Net Power - ISO 9249 (DIN) | 175 hp (metric) 175 hp (metric) |
| Engine Model | Cat® C4.4 Cat® C4.4 |
| Engine Power - ISO 14396 | 174 hp 129.4 kW |
| Engine Power - ISO 14396 (DIN) | 176 hp (metric) 176 hp (metric) |
| Bore | 4 in 105 mm |
| Stroke | 5 in 127 mm |
| Displacement | 269 in³ 4.4 l |
| Biodiesel Capability | Up to B20¹ Up to B20¹ |
| Emissions | Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 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. 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). 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). |
| Operating Weight | 49,800 lb 22600 kg |
| Note | Reach boom, R2.9 (9'6") stick, Heavy Duty (HD) 1.19 m³ (1.56 yd³) bucket 790 mm (31") triple grouser shoes, 4200 kg (10,400 lb) counterweight. Reach boom, R2.9 (9'6") stick, Heavy Duty (HD) 1.19 m³ (1.56 yd³) bucket 790 mm (31") triple grouser shoes, 4200 kg (10,400 lb) counterweight. |
| Maximum Digging Depth | 22 ft 6720 mm |
| Boom | Reach 5.7 m (18'8") Reach 5.7 m (18'8") |
| Stick | Reach 2.9 m (9'6") Reach 2.9 m (9'6") |
| Bucket | 1.19 m ³ (1.56 yd³) 1.19 m ³ (1.56 yd³) |
| Maximum Reach at Ground Level | 32.3 ft 9860 mm |
| Maximum Cutting Height | 30.7 ft 9370 mm |
| Maximum Loading Height | 21.3 ft 6490 mm |
| Minimum Loading Height | 7.1 ft 2170 mm |
| Maximum Depth Cut for 2440 mm (8 ft) Level Bottom | 21.5 ft 6550 mm |
| Maximum Vertical Wall Digging Depth | 17 ft 5190 mm |
| Bucket Digging Force - ISO | 31586 lbf 141 kN |
| Stick Digging Force - ISO | 23987 lbf 107 kN |
| Main System - Maximum Flow | 429 l/min (113 gal/min) 429 l/min (113 gal/min) |
| Maximum Pressure - Equipment | 5075 psi 35000 kPa |
| Maximum Pressure - Equipment - Lift Mode | 5510 psi 38000 kPa |
| Maximum Pressure - Travel | 4974 psi 34300 kPa |
| Maximum Pressure - Swing | 3988 psi 27500 kPa |
| Swing Speed* | 11.25 r/min 11.25 r/min |
| Maximum Swing Torque | 60300 lbf·ft 82 kN·m |
| Note (1) | *For CE-marked machine default value may be set lower. *For CE-marked machine default value may be set lower. |
| Fuel Tank Capacity | 91.1 gal (US) 345 l |
| Cooling System | 6.6 gal (US) 25 l |
| Engine Oil | 4 gal (US) 15 l |
| Swing Drive | 1.6 gal (US) 6 l |
| Final Drive - Each | 1.1 gal (US) 4 l |
| Hydraulic System - Including Tank | 61.8 gal (US) 234 l |
| Hydraulic Tank | 30.4 gal (US) 115 l |
| DEF Tank | 10.3 gal (US) 39 l |
| Boom | Reach 5.7 m (18'8") Reach 5.7 m (18'8") |
| Stick | Reach 2.9 m (9'6") Reach 2.9 m (9'6") |
| Bucket | 1.19 m ³ (1.56 yd³) 1.19 m ³ (1.56 yd³) |
| Shipping Height - Top of Cab | 9.7 ft 2960 mm |
| Handrail Height | 9.7 ft 2950 mm |
| Shipping Length | 31.3 ft 9530 mm |
| Tail Swing Radius | 9.3 ft 2830 mm |
| Counterweight Clearance | 3.4 ft 1050 mm |
| Ground Clearance | 1.5 ft 470 mm |
| Track Length | 14.6 ft 4450 mm |
| Length to Center of Rollers | 11.7 ft 3650 mm |
| Track Gauge | 7.8 ft 2380 mm |
| Transport Width | 9.8 ft 2980 mm |
| 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). 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). |
| Recyclability | 97% 97% |
Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.
Cat Lift Assist is an excavator safety feature that quickly calculates the actual load you are lifting and compares it to the rated load the excavator is capable of handling. Visual and auditory alerts tell you if you are within safe working range or need to take action to avoid tipping.
Cat Lift Assist is an excavator safety feature that quickly calculates the actual load you are lifting and compares it to the rated load the excavator is capable of handling. Visual and auditory alerts tell you if you are within safe working range or need to take action to avoid tipping.
Cat® Command Remote Control enables operators to control Caterpillar construction equipment from a safe distance, helping improve job site safety, productivity, and operational flexibility. Whether working in hazardous environments, demolition sites, steep terrain, or areas with restricted access, Cat Command technology keeps operators away from potential risks while maintaining precise machine control.
Cat® Command Remote Control enables operators to control Caterpillar construction equipment from a safe distance, helping improve job site safety, productivity, and operational flexibility. Whether working in hazardous environments, demolition sites, steep terrain, or areas with restricted access, Cat Command technology keeps operators away from potential risks while maintaining precise machine control.
Cat® 2D E-fence keeps the front linkage within a predefined work area to avoid hazards like traffic. 2D E-fence uses data from position sensors to automatically stop motion when the front linkage reaches the defined boundaries.
While machines are designed to maximize operator visibility, it can be challenging to constantly monitor what is going on around them. Cat® Detect - People Detection is an intelligent vision camera system that can alert an operator when someone enters within a machine’s hazard zone.
Cat® 2D E-fence keeps the front linkage within a predefined work area to avoid hazards like traffic. 2D E-fence uses data from position sensors to automatically stop motion when the front linkage reaches the defined boundaries.
While machines are designed to maximize operator visibility, it can be challenging to constantly monitor what is going on around them. Cat® Detect - People Detection is an intelligent vision camera system that can alert an operator when someone enters within a machine’s hazard zone.
VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.
VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.
Digging a foundation. Trenching for a water line. Working on a slope. These jobs demand the precision and speed you get from Cat® Grade technologies. Combining advanced guidance with optional automated machine control, Grade helps operators hit grading targets right on the money in fewer passes.
Digging a foundation. Trenching for a water line. Working on a slope. These jobs demand the precision and speed you get from Cat® Grade technologies. Combining advanced guidance with optional automated machine control, Grade helps operators hit grading targets right on the money in fewer passes.
Next generation excavators take on all kinds of tasks - loading, stockpiling, material handling, and more. Cat® Payload technology provides on-the-go weighing to help operators hit exact targets every time and avoid overloading, underloading, or misloading materials.
Next generation excavators take on all kinds of tasks - loading, stockpiling, material handling, and more. Cat® Payload technology provides on-the-go weighing to help operators hit exact targets every time and avoid overloading, underloading, or misloading materials.
320 Medium Hydraulic Excavator
320 Medium Hydraulic Excavator
320 Medium Hydraulic Excavator
320 Medium Hydraulic Excavator
320 Medium Hydraulic Excavator
Cat® Next Generation Excavators: Vision
Cat® Next Generation Excavators: Manufacturing
Cat® Next Generation Excavators: Design
Cat 320® Next Generation Excavator Delivers More for Schwarz Excavations
Stick Steer for Cat® Excavators
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