Get a quoteCat® 340 Hydraulic Excavator
Quality, Reliability and Durability Come Standard.
More Comfort – More Performance – More Versatility
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Get More Work Done
The 340 features high horsepower, a wide undercarriage, and an optional heavy counterweight, allowing larger work tools to handle substantial payloads and achieve exceptional production output.
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Save Time and Resources
Extended service intervals and industry-leading fuel efficiency mean you’ll spend more time working and less time and money on maintenance.
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Easy-to-Use Technology
Available technology enables operators of all skill levels to produce faster, better cuts and fills and more accurate payloads. Cat Grade and Payload enhance speed, accuracy, and operating efficiency. Cat E-Fence improves jobsite safety for you, your team, and others.
Engine
| Biodiesel Capability | Up to B20¹ |
| Bore | 5 in |
| Displacement | 568 in³ |
| Emissions | Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. |
| Engine Model | Cat C9.3B |
| Engine Power - ISO 14396 (DIN) | 352 hp (metric) |
| Engine Power - ISO 14396:2002 | 347 hp |
| Net Power - ISO 9249 | 346 hp |
| Net Power - ISO 9249 (DIN) | 351 hp (metric) |
| 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 diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or 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. *Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (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. |
| Stroke | 6 in |
Hydraulic System
| Main System - Maximum Flow | 148 gal/min |
| Maximum Pressure - Equipment | 5076 psi |
| Maximum Pressure - Equipment - Lift Mode | 5511 psi |
| Maximum Pressure - Swing | 4264 psi |
| Maximum Pressure - Travel | 5076 psi |
Swing Mechanism
| Maximum Swing Torque | 105214 ft·lbf |
| Swing Speed | 8.84 r/min |
Weights
| Operating Weight | 83100 lb |
Service Refill Capacities
| Cooling System | 10.5 gal (US) |
| DEF Tank | 21.1 gal (US) |
| Engine Oil | 8.5 gal (US) |
| Final Drive - Each | 2.1 gal (US) |
| Fuel Tank Capacity | 158.5 gal (US) |
| Hydraulic System - Including Tank | 98.5 gal (US) |
| Hydraulic Tank | 42.5 gal (US) |
| Swing Drive - Each | 4.8 gal (US) |
Dimensions
| Boom | Reach 6.5 m (21'4") |
| Bucket | HD 2.36 m³ (3.08 yd³) |
| Counterweight Clearance | 4.2 ft |
| Ground Clearance | 1.8 ft |
| Handrail Height | 10.5 ft |
| Shipping Height - Top of Cab | 10.5 ft |
| Shipping Length | 36.8 ft |
| Stick | Reach 3.9 m (12'10") |
| Tail Swing Radius | 11.7 ft |
| Track Gauge | 9 ft |
| Track Length | 16.6 ft |
| Track Length to Center of Rollers | 13.3 ft |
| Transport Width - 850 mm (33”) Shoes | 11.9 ft |
Working Ranges & Forces
| Boom | Reach 6.5 m (21'4") |
| Bucket | HD 2.36 m³ (3.08 yd³) |
| Bucket Digging Force - ISO | 47190 lbf |
| Maximum Cutting Height | 35.3 ft |
| Maximum Depth Cut for 2440 mm (8 ft) Level Bottom | 26.5 ft |
| Maximum Digging Depth | 26.9 ft |
| Maximum Loading Height | 24.5 ft |
| Maximum Reach at Ground Level | 38.6 ft |
| Maximum Vertical Wall Digging Depth | 21.1 ft |
| Minimum Loading Height | 6.2 ft |
| Stick | Reach 3.9 m (12'10") |
| Stick Digging Force - ISO | 32480 lbf |
Air Conditioning System
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.00 kg of refrigerant, which has a CO2 equivalent of 1.430 metric tonnes. |
