Cat® 340 Hydraulic Excavator

Cat® 340 Hydraulic Excavator

Quality, Reliability and Durability Come Standard.

Get a quote

More Comfort – More Performance – More Versatility

Get More Work Done

The 340 features high horsepower, a wide undercarriage, and a heavy counterweight, allowing larger work tools to handle substantial payloads and achieve exceptional production output.
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.
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. CatE-Fence improves jobsite safety for you, yourteam, and others.

Get a quote

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 2014emission standards.
Engine Model	Cat C9.3B
Engine Power - ISO 14396	347 HP
Engine Power - ISO 14396 (DIN)	352 hp (metric)
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.