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With up to 10 percent more productivity than the model it replaces, the Cat® 340 is the best in its class for moving tons per hour. Add in the excavator’s low owning and operating costs and you will profit like nobody’s business.

Cat Specs


Operating Weight
83100 lb


Engine Model
Cat C9.3B
Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
5 in
6 in
568 in²
Note (2)
¹All Cat nonroad U.S. EPA Tier 4 Final, EU Stage V, Japan 2014, Korea Tier 5, India CEV Stage V, and China Nonroad Stage IVdiesel engines are required to use ULSD (ultra-low sulfur diesel with 15 ppm
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

Service Refill Capacities

Fuel Tank Capacity
158.5 gal (US)
Final Drive - Each
2.1 gal (US)
Engine Oil
8.5 gal (US)
Swing Drive - Each
4.8 gal (US)
DEF Tank
21.1 gal (US)
Hydraulic System - Including Tank
98.5 gal (US)
Hydraulic Tank
42.5 gal (US)
Cooling System
10.5 gal (US)

Hydraulic System

Main System - Maximum Flow
148 gal/min
Maximum Pressure - Equipment
5076 psi
Maximum Pressure - Equipment - Lift Mode
5511 psi
Maximum Pressure - Travel
5076 psi
Maximum Pressure - Swing
4264 psi
Turning Torque
32480 lb/ft


Track Length
16.6 in
Shipping Length
36.8 ft
Track Gauge
9 in
Tail Swing Radius
11.7 ft
Counterweight Clearance
4.2 ft
Ground Clearance
1.8 ft

Swing Mechanism

Swing Speed
8.84 r/min
Maximum Swing Torque
105214 lb/ft

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 equ