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

Demolition Excavators 340 Straight Boom

Cat® 340 Straight Boom Excavator

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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

340 Straight Boom
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Overview

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

With its new cab, long maintenance intervals, and power system that improves fuel efficiency up to 15%, the Cat® 340 is the perfect choice for low-level demolition, sorting, and other excavation tasks.

Benefits

Up To 15% More fuel efficiency

Get more work done with advanced engine and electrohydraulic controls.

New cab with more comfort and safety

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

Up To 15% Lower maintenance costs

Increase uptime and reduce costs with extended maintenance intervals.

Features At A Glance

Cab Monitor Improvements.

Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu.
Identify apps quickly with a grid list view, abbreviated app names, and categorized menu options.
A notification center keeps important information visible to the operator, and displays messages without shrinking the camera view.
Color coded notifications set critical messages apart from the rest.
Use the in-monitor QR code to learn about machine and technology features through a full suite of “how-to” videos.

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area. Build Number: 08C

Expect high fuel efficiency – more work per unit of fuel.
Match the excavator to the job with three power modes – Power, Smart, and Eco. Smart mode automatically matches engine and hydraulic power to working conditions, providing max power when needed and reducing power when it isn’t to help save fuel.
Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments, including the heaviest tools needed for demolition work.
Don’t let the temperature stop you from working. This excavator has a high-ambient capability of 52° C (125° F) and cold start capability of –18° C (0° F).
Advansys™ bucket tips increase production and lower costs with more tip life.
The Cat PL161 attachment locator is a Bluetooth® device designed to let users know where their attachments are across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The PL161 integrates easily into VisionLink® for full fleet management of machines and attachments from one smartphone or tablet dashboard to view location and tracking details.

Standard Cat Grade with 2D indicates depth and slope on the monitor with auditory alerts.
Cat Payload onboard weighing helps you achieve precise load targets to improve your operating efficiency. Pick up a load of material – with either a bucket or grapple – and get a real-time weight estimate without even swinging.
Combine Payload with VisionLink® and remotely manage your production targets. The monitor’s USB port lets you download results from one shift all the way up to 30 days of work, so you can manage your progress without needing an internet connection or VisionLink subscription.
Know the excavator’s exact position relative to GPS and GLONASS systems. The machine automatically compensates for excavator pitch and roll caused by sloping ground conditions.
VisionLink® provides actionable data insights for all assets - regardless of fleet size or equipment manufacturer.* Review equipment data from your desktop or mobile device to maximize uptime and optimize assets. Dashboards provide information such as hours, miles, location, idle time, and fuel utilization. Make informed decisions that lower costs, simplify maintenance, and improve safety and security on your jobsite.
VisionLink Productivity gathers and summarizes machine telematics and jobsite data from all your equipment – regardless of the manufacture.* View actionable information such as idle time, fuel burn, location, payload, load counts, total cycles, and more to improve machine efficiency, productivity, and utilization. Access data anywhere via a mobile, tablet, or desktop device - on or off the jobsite.
Remote Troubleshoot is a mobile application that allows your Cat dealer to perform diagnostic testing on your connected machine remotely to help ensure that issues are resolved quickly and with less downtime.
Remote Flash is a mobile application that allows you to update onboard software without a technician being present, allowing you to initiate software updates when convenient, increasing your overall operating efficiency.
The Cat PL161 attachment locator allows you to track attachments across all worksites, reduce the number of lost attachments, and plan for attachment maintenance and replacement. The work tool recognition feature automatically adjusts machine settings based on the selected tool.

*Data field availability can vary by equipment manufacturer.

The demolition cab comes with a deluxe heated seat and climate control.
Get in and out of the cab easier with the tip-up left console.
Control the excavator comfortably with easy-to-reach controls all located in front of you.
Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles. A cup holder, document holder, bottle holder, and coat hook are also provided.
Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.

Start the engine with a push button; use a Bluetooth® key fob or the unique Operator ID function.
Program your power mode and joystick preferences using operator ID; the excavator will remember them every time you go to work.
Automatic hydraulic oil warmup gets you to work faster in cold temperatures and helps prolong the life of components.
Navigate quickly on the standard high-resolution 254 mm (10 in) touchscreen monitor or with the aid of the jog dial control.
Make moving the excavator much easier with Cat Stick Steer. Simply push a button and use one hand to travel and turn instead of both hands or feet on levers or pedals.
Need more lift during your shift? Auto heavy lift gives you 8% more power exactly when you need it for as long as you need it.
Not sure how a function works or how to maintain the excavator? Always have the operator’s manual at your fingertips in the touchscreen monitor.

Expect low maintenance cost with extended and synchronized service intervals.
Check hydraulic system oil and easily drain fuel system water and fuel tank water from ground level.
Track your excavator’s filter life and maintenance intervals via the in-cab monitor.
Change all fuel filters at a synchronized 1,000 hours. Oil and fuel filters grouped and located on right-hand side of machine for easy maintenance.
The air intake filter with pre-cleaner has high dust holding capacity.
The hydraulic oil filter provides improved filtration performance; anti-drain valves keep oil clean when the filter is replaced.
The high-efficiency hydraulic fan has an optional automatic reverse function to keep cores free from debris, eliminating the need for any operator interaction.
S·O·S^SM ports simplify maintenance and allow for quick, easy extraction of fluid samples for analysis.

When you buy Cat® equipment, you get more than the machine. You’re also getting the support of a best-in-class dealer network backed by a range of flexible solutions, technology, tools, and more.

When you work with your local Cat dealer, you'll be supported by one of the industry's most extensive, knowledgeable dealer networks. Comprised of 160 independent dealers, the Cat Dealer Network serves 197 countries with thousands of branches around the globe.

It’s more uptime, cost-saving service and repair options, quality parts, and precision components. It’s all about support built around your success.

Ask your Cat dealer today about the many services that help you do your work your way.

The importance of buying genuine Cat parts.

Designed by Caterpillar engineers to the exact specs of your Cat equipment.
Rigorously tested to ensure maximum performance.
Covered by a 12-month warranty.

Cat Inspect – Work made easy.

Record real-time inspection data.
Simplify inspections and reporting.
Easy-to-read results all in one place.

Cat Ground Engaging Tools (GET) – Longer wear. More work.

GET for every machine and application.
Tools to extend life and track GET lifecycles.
Bucket rebuild options for optimal performance.

Cat Hydraulic Components – Durability quality you can work with.

Flexible options – New, reman, exchange, rebuild or repair.
Expert diagnostics, testing, and contamination control.
Buy in-store, online, or on your mobile device.

Cat Hose Service – Fast, safe—to get you back to work.

Hoses and couplings for most makes and models.
OEM database ensures an exact fit.
Industry-best tooling, training, and assembly standards.

Cat Certified Rebuild – An investment that works. Again, and again.

Better-than-when-new performance at a fraction of the cost.
Performance, safety, and technology upgrades and enhancements.
Full warranty coverage, Customer Value Agreement, and special financing.

Cat Remote Services – Work done in a flash.

Cut downtime for updates and service.
Install the latest machine software remotely.
Troubleshoot issues before a technician arrives.

24/7 Expert Support
Get industry-leading support for any question or problem you have 24 hours a day, 7 days a week, 365 days a year.

CALL US
We’re available 24/7 at
Toll Free:1-888-228-1460
Direct:1-513-830-1806
SMS:+13098656129

Learn more at https://parts.cat.com/

The front windshield and top hatch are made with EN 356 P5A glazing for enhanced impact resistance.
The standard ROPS cab meets ISO 12117-2:2008 requirements.
Operator Protective Guards (OPG) enhances overhead safety.
A travel direction indicator helps operators know which way to activate the travel levers.
Enjoy great visibility with the help of narrow cab pillars, large windows, the standard parallel roof wiper and washer, and a flat engine hood design.
A ground-level shutoff switch stops all fuel to the engine when activated and shuts down the machine.
Rearview and sideview cameras are standard. Upgrade to 360° visibility and you’ll easily visualize objects and personnel around the excavator in a single view.
Serrated steps and anti-skid punch plate on the service platform help prevent slipping.
Make service work easier and safer with optional inspection lighting. With the flip of a switch, lights will illuminate the engine, pump, battery, and radiator compartments to enhance visibility.
Standard 2D E-Fence integrated right out of the factory prevents the excavator from moving outside of operator-defined set points.

The Cat® C9.3B engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Cat 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.
Auto Engine Speed Control helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
Cat Grade technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy.
Cat® Payload for excavators provides on-the-go material weighing which helps reduce fuel burn by improving loading efficiency, job site productivity, and eliminating trips to the scale.
Cat® 2D E-fence keeps the front linkage within a predefined work area to avoid hazards such as traffic - not only helping keep personnel safe but also helps you avoid repairs, downtime, and costly job site fines.
Don't waste fuel idling. Cat VisionLink® online fleet monitoring helps you manage idle time and reduce fuel burn and greenhouse gas emissions.
Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.

*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.

Specifications Standard Equipment Optional Equipment

Product Specifications for 340 Straight Boom

Engine

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 14396:2002	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.

Hydraulic System

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 Mechanism

Swing Speed	8.84 r/min 8.84 r/min
Maximum Swing Torque	10741 ft·lbf 143 kN·m

Weights

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.

Service Refill Capacities

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

Dimensions

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	11.5 ft 3500 mm
Shipping Length	37.4 ft 11390 mm
Tail Swing Radius	11.6 ft 3530 mm
Counterweight Clearance	4.1 ft 1250 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	10.9 ft 3290 mm

Working Ranges and Forces

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	33.6 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 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 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 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

2300 m (7,546 ft) altitude capability with no engine power de-rating

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 3D single GNSS

Cat Grade 3D dual GNSS

ELECTRICAL SYSTEM

Premium surround lighting package

ENGINE

Cold start block heaters

Auto reverse fan

-32° C (-25° F) cold start capability

HYDRAULIC SYSTEM

SmartBoom™ (Europe only)

Combined two-way auxiliary circuit with direct return

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

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

Product Specifications for 340 Straight Boom

Download Print

Engine

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 14396:2002	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.

Hydraulic System

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 Mechanism

Swing Speed	8.84 r/min 8.84 r/min
Maximum Swing Torque	10741 ft·lbf 143 kN·m

Weights

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.

Service Refill Capacities

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

Dimensions

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	11.5 ft 3500 mm
Shipping Length	37.4 ft 11390 mm
Tail Swing Radius	11.6 ft 3530 mm
Counterweight Clearance	4.1 ft 1250 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	10.9 ft 3290 mm

Working Ranges and Forces

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	33.6 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 System

Air Conditioning

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 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

2300 m (7,546 ft) altitude capability with no engine power de-rating

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 3D single GNSS

Cat Grade 3D dual GNSS

ELECTRICAL SYSTEM

Premium surround lighting package

ENGINE

Cold start block heaters

Auto reverse fan

-32° C (-25° F) cold start capability

HYDRAULIC SYSTEM

SmartBoom™ (Europe only)

Combined two-way auxiliary circuit with direct return

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

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.

Command

Equipment Management

Cat Command Remote Control for Construction

Cat Command is an advanced remote control system that takes operators off the machine and away from potential dangers when working with hazardous materials or in unsafe conditions. The system's deep integration with machine systems ensures smooth and precise control for optimal efficiency and productivity.

Explore Technology

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Cat Command is an advanced remote control system that takes operators off the machine and away from potential dangers when working with hazardous materials or in unsafe conditions. The system's deep integration with machine systems ensures smooth and precise control for optimal efficiency and productivity.

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Cat Inspect

Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.

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Cat Product Link

Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.

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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.

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Cat® Inspect allows you to access your equipment data on your mobile device. This easy-to-use app lets you capture inspection data and integrates with your other Cat data systems, so you can keep a close eye on your fleet. More than one million inspections are completed each year, providing convenience and accountability to equipment owners.

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Cat® Product Link™ wirelessly connects you to your equipment giving you valuable insight into how your machine or fleet is performing. Information such as location, hours, fuel usage, productivity, idle time, and diagnostic codes are made available through online web applications so that you can make timely, fact-based decisions to maximize efficiency, improve productivity, and lower the cost of owning and operating your fleet. Available with satellite or cellular connectivity.

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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.

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See how 340 Straight Boom compares against frequently compared products.

Excavators

Selected

340 Straight Boom Cat® 340 Straight Boom Excavator

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

Excavators

352 Straight Boom Cat® 352 Straight Boom Excavator

Operating Weight: 121000 lb; 54900 kg
Maximum Pin Height at Stick Nose: 42.2 ft; 12.85 m
Maximum Weight at Stick Nose: 12456 lb; 5650 kg

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Excavators

340 UHD Cat® 340 UHD Hydraulic Excavator

Operating Weight: 122600 lb; 55600 kg
Maximum Pin Height at Stick Nose: 72.2 ft; 22 m
Maximum Weight at Stick Nose: 8160 lb; 3700 kg

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Use the comparison tool to compare detailed specs of Cat and competitor models.

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Boost Productivity. Improve Efficiency.

Cat® Technology for construction helps contractors meet production goals and improve efficiencies.

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