Cat® 340 hydraulic straight boom excavators bring power, performance, and control to your low level demolition projects.

Demolition Excavators 340 Straight Boom

Request A Price Find Dealer

Key Specs

Operating Weight
87800 lb
39800 kg
Maximum Pin Height at Stick Nose
39.4 ft
12 m
Maximum Weight at Stick Nose
9170 lb
4160 kg

Overview

Perfect for low-level demolition, sorting, and excavating.

With an upgraded cab, long maintenance intervals, and power system that helps improve fuel efficiency, the Cat® 340 is the perfect choice for low-level demolition, sorting, and other excavation tasks

Benefits

High fuel efficiency

Leverage advanced engine and electrohydraulic control to help get more work done.

Improved cab with more comfort and safety

Deluxe cab with ISO-certified ROPS protection makes for a safer, quieter work environment.

Low maintenance costs

Extended maintenance intervals help increase uptime and reduce costs.

Product Specifications for 340 Straight Boom

Engine Model C9.3B C9.3B
Net Power - ISO 9249 346 hp 258.3 kW
Net Power - ISO 9249 (DIN) 351 hp (metric) 351 hp (metric)
Engine Power - ISO 14396 347 hp 259 kW
Engine Power - ISO 14396 (DIN) 352 hp (metric) 352 hp (metric)
Bore 5 in 115 mm
Stroke 6 in 149 mm
Displacement 568 in³ 9.3 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 1,900 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 1,900 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. 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.
Main System - Maximum Flow 560 l/min (148 gal/min) 560 l/min (148 gal/min)
Maximum Pressure - Equipment 5076 psi 35000 kPa
Maximum Pressure - Equipment - Lift Mode 5511 psi 38000 kPa
Maximum Pressure - Travel 5076 psi 35000 kPa
Maximum Pressure - Swing 4264 psi 29400 kPa
Swing Speed 8.84 r/min 8.84 r/min
Maximum Swing Torque 10741 lbf·ft 143 kN·m
Operating Weight 87800 lb 39800 kg
Note (1) Long undercarriage, Straight boom, R3.9DB (12'10") stick, GD 2.27 m³ (2.97 yd³) bucket, 700 mm (28") triple grouser shoes, and 9 mt (19,800 lb) counterweight. Long undercarriage, Straight boom, R3.9DB (12'10") stick, GD 2.27 m³ (2.97 yd³) bucket, 700 mm (28") triple grouser shoes, and 9 mt (19,800 lb) counterweight.
Fuel Tank Capacity 158.5 gal (US) 600 l
Cooling System 10.5 gal (US) 40 l
Engine Oil 8.5 gal (US) 32 l
Swing Drive 4.8 gal (US) 18 l
Final Drive - Each 2.1 gal (US) 8 l
Hydraulic System - Including Tank 98.5 gal (US) 373 l
Hydraulic Tank 42.5 gal (US) 161 l
DEF Tank 21.1 gal (US) 80 l
Boom Straight 6.9 m (22'8") Straight 6.9 m (22'8")
Stick Reach 3.9 m (12'10") Reach 3.9 m (12'10")
Bucket GD 2.27 m³ (2.97 yd³) GD 2.27 m³ (2.97 yd³)
Shipping Height - Top of Cab 11 ft 3360 mm
Cab Height - With OPG 11.4 ft 3490 mm
Shipping Length 37.3 ft 11390 mm
Tail Swing Radius 11.6 ft 3530 mm
Counterweight Clearance 4.2 ft 1260 mm
Ground Clearance 1.7 ft 520 mm
Track Length 16.5 ft 5030 mm
Track Length to Center of Rollers 13.3 ft 4040 mm
Track Gauge 8.5 ft 2590 mm
Transport Width 10.8 ft 3290 mm
Maximum Pin Height at Stick Nose 39.4 ft 12 m
Maximum Weight at Stick Nose 9170 lb 4160 kg
Boom Straight 6.9 m (22'8") Straight 6.9 m (22'8")
Stick Reach 3.9 m (12'10") Reach 3.9 m (12'10")
Bucket GD 2.27 m³ (2.97 yd³) GD 2.27 m³ (2.97 yd³)
Maximum Digging Depth 21.8 ft 6650 mm
Maximum Reach at Ground Level 40.5 ft 12350 mm
Maximum Cutting Height 45.2 ft 13770 mm
Maximum Loading Height 33.7 ft 10250 mm
Minimum Loading Height 11 ft 3360 mm
Maximum Depth Cut for 2440 mm (8'0") Level Bottom 21.4 ft 6520 mm
Maximum Vertical Wall Digging Depth 18.5 ft 5640 mm
Bucket Digging Force -ISO 47150 lbf 210 kN
Stick Digging Force - ISO 32440 lbf 144 kN
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1 kg (2.2 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons). The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1 kg (2.2 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons).

340 Straight Boom Standard Equipment

NOTE

  • Standard and optional equipment may vary. Consult your Cat dealer for details.

BOOM AND STICKS

  • 6.9 m (22'8") Straight boom

CAB

  • ROPS, advanced sound suppression
  • High-resolution 254 mm (10") LCD touch screen monitor
  • Heated seat with air-adjustable suspension

CAT TECHNOLOGY

  • VisionLink®
  • Remote Flash
  • Remote Troubleshoot
  • Cat Grade with 2D
  • Cat Assist
  • Cat Payload

ELECTRICAL SYSTEM

  • Maintenance-free 1,000 CCA batteries (x2)
  • Centralized electrical disconnect switch
  • LED chassis light

ENGINE

  • Three selectable modes: Power, Smart, Eco
  • Auto engine speed control
  • 3300 m (10,830 ft) altitude capability
  • 52° C (126° F) high-ambient cooling capacity
  • -18° C (0° F) cold start capability
  • Double element air filter with integrated pre-cleaner

HYDRAULIC SYSTEM

  • Boom and stick regeneration circuit
  • Electronic main control valve
  • Heavy lift mode
  • Auto hydraulic oil warmup
  • Reverse swing damping valve
  • Auto swing parking brake
  • High performance hydraulic return filter
  • Two speed travel
  • Bio hydraulic oil capability

SAFETY AND SECURITY

  • 2D E-fence
  • Auto hammer stop
  • Caterpillar One Key security system
  • Lockable external tool / storage box
  • Lockable door, fuel and hydraulic tank locks
  • Lockable fuel drain compartment
  • Lockable disconnect switch
  • Service platform with anti-skid plate and recessed bolts
  • Right-hand handrail and hand hold
  • Standard visibility mirror package
  • Signaling / warning horn
  • Ground-level secondary engine shutoff switch
  • Rear and sideview cameras
  • Boom lowering check valve (optional in North America)
  • Stick lowering check valve (optional in North America)

SERVICE AND MAINTENANCE

  • Grouped location of engine oil & fuel filters
  • Sampling ports for Scheduled Oil Sampling (S·O·S℠)
  • Integrated vehicle health management system

UNDERCARRIAGE AND STRUCTURES

  • Towing eye on base frame
  • 9.0 mt (19,842 lb) counterweight

340 Straight Boom Optional Equipment

NOTE

  • Standard and optional equipment may vary. Consult your Cat dealer for details.

BOOM AND STICKS

  • 3.2 m (10'6") Reach stick
  • 3.9 m (12'10") Reach stick

CAT TECHNOLOGY

  • VisionLink Productivity
  • Cat Grade 2D with Attachment Ready Option (ARO)
  • Cat Grade with 3D (single or dual GNSS)

ELECTRICAL SYSTEM

  • Premium surround lighting package

ENGINE

  • Cold start block heaters
  • Hydraulic reversing fan
  • -32° C (-25° F) cold start capability

HYDRAULIC SYSTEM

  • SmartBoom™ (Europe only)
  • Combined two-way auxiliary circuit with direct return filter
  • Medium-pressure auxiliary circuit
  • Cooling circuit
  • Quick coupler circuit for Cat Pin Grabber and CW Dedicated

SAFETY AND SECURITY

  • Cat Command (remote control)
  • Travel alarm (standard in North America)
  • Swing alarm
  • 360° visibility

SERVICE AND MAINTENANCE

  • Preventative maintenance ready (Quick Evac™)
  • Electric refueling pump with auto shutoff (Europe only)

UNDERCARRIAGE AND STRUCTURES

  • Long undercarriage
  • Long Narrow undercarriage
  • 600 mm (24") HD triple grouser track shoes
  • 700 mm (28") triple grouser track shoes
  • 850 mm (33") HD triple grouser track shoes

Compatible Technology and Services

Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.

  • Cat Grade with Assist for Excavators

    Cat Grade with Assist for excavators automates boom and stick movements for more accurate cuts with less effort. Grade Assist uses machine position sensors and operator defined depth and slope parameters to enable single-lever digging.

  • Cat Lift Assist for Excavators

    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.

1 - 8 of 9 Items items
Previous Next

Cat Grade with Assist for excavators automates boom and stick movements for more accurate cuts with less effort. Grade Assist uses machine position sensors and operator defined depth and slope parameters to enable single-lever digging.

Explore Technology

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.

Explore Technology
  • Cat PL161 Attachment Tracker

    The Cat PL161 Attachment Tracker is the most advanced OEM integrated solution for attachment tracking. The PL161 mounts easily to your attachments or anything else you want to track.

  • Cat Remote Flash

    Remote Flash sends an alert from your Cat dealer, prompting you to update the software on your machine. To minimize downtime, updates can be deployed while on the jobsite without having to wait for a dealer technician to arrive. Remote flash decreases maintenance time and keeps your asset running with maximum efficiency.

  • Cat Remote Troubleshooting

    Remote Troubleshoot allows your Cat dealer to run testing while the machine is operating. Once the problem is identified, a technician can fix it with the correct parts and tools the first time, saving time and money. Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency.

  • VisionLink®

    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.

1 - 8 of 9 Items items
Previous Next

The Cat PL161 Attachment Tracker is the most advanced OEM integrated solution for attachment tracking. The PL161 mounts easily to your attachments or anything else you want to track.

Explore Technology

Remote Flash sends an alert from your Cat dealer, prompting you to update the software on your machine. To minimize downtime, updates can be deployed while on the jobsite without having to wait for a dealer technician to arrive. Remote flash decreases maintenance time and keeps your asset running with maximum efficiency.

Explore Technology

Remote Troubleshoot allows your Cat dealer to run testing while the machine is operating. Once the problem is identified, a technician can fix it with the correct parts and tools the first time, saving time and money. Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency.

Explore Technology

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.

Explore Technology
  • Cat Grade with 2D for Excavators

    Cat Grade with 2D helps excavator operators work up to 35% more efficiently in a wide variety of applications. Delivering real-time guidance for accurate vertical and horizontal control, Grade with 2D helps to ensure that cuts and fills are made to exact specifications – without under or overcutting.

  • Cat Grade with 3D for Excavators

    Grade with 3D adds GNSS technology and RTK positioning guidance to simplify the grading process of complex designs often found on large infrastructure and commercial projects.

1 - 8 of 9 Items items
Previous Next

Cat Grade with 2D helps excavator operators work up to 35% more efficiently in a wide variety of applications. Delivering real-time guidance for accurate vertical and horizontal control, Grade with 2D helps to ensure that cuts and fills are made to exact specifications – without under or overcutting.

Explore Technology

Grade with 3D adds GNSS technology and RTK positioning guidance to simplify the grading process of complex designs often found on large infrastructure and commercial projects.

Explore Technology
  • Cat Payload for Excavators

    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.

1 - 8 of 9 Items items
Previous Next

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.

Explore Technology
  • VisionLink® Productivity

    VisionLink® Productivity is an easy-to-use cloud-based platform that gathers and summarizes machine telematics and jobsite data from all your equipment. Actionable performance data is transmitted to the web platform for users to access anywhere, anytime via a mobile, tablet, or desktop device - on or off the jobsite.

1 - 8 of 9 Items items
Previous Next

VisionLink® Productivity is an easy-to-use cloud-based platform that gathers and summarizes machine telematics and jobsite data from all your equipment. Actionable performance data is transmitted to the web platform for users to access anywhere, anytime via a mobile, tablet, or desktop device - on or off the jobsite.

Explore Technology

See how 340 Straight Boom compares against frequently compared products.

Media Gallery

340 Hydraulic Excavator

340 SB

340 SB

340 SB

340 SB

340 SB

340 SB

340 SB

340 SB

340 SB

340 SB

340 SB

340 Hydraulic Excavator
340 SB
340 SB
340 SB
340 SB
340 SB
340 SB
340 SB
340 SB
340 SB
340 SB
340 SB

Cat® 340 Straight Boom Demolition Excavator

Cat® 340 Straight Boom Demolition Excavator

Take the interactive virtual product tour to explore the great features and benefits of the 340 Straight Boom

Start 340 Straight Boom Tour
close

Check out current offers for the 340 Straight Boom

View More Offers