Cat® 340 hydraulic trackhoe excavator bring premium power, performance, control, digging, trenching, and heavy lifting capacity to your large scale projects.

Large Excavators 340 - Tier 4 / Stage V

Cat® 340 Hydraulic Excavator

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Key Specs

Net Power - ISO 9249: 346 hp; 258.3 kW

Operating Weight: 83100 lb; 37700 kg

Engine Model: Cat C9.3B; Cat C9.3B

340 - Tier 4 / Stage V
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Overview

Quality, Reliability and Durability Come Standard.

The Cat® 340 is evidence of our time-proven engineering and manufacturing know-how for top-notch quality, reliability, and durability. In addition to a powerful engine with millions of hours of service and reinforced booms and sticks for taking on hard and heavy work, the standard, heavy-duty reinforced undercarriage expertly absorbs the stress between jobsite terrain and machine. Built for rugged conditions, this rock-solid machine will help you turn payloads into profit.

Benefits

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.

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. Cat E-Fence improves jobsite safety for you, your team, and others.

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 new 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 technology and features through a full suite of "how-to" videos.

Operator Coaching

Operator Coaching is an in-cab system that recognizes specific opportunities for operators to be more productive and prevent unnecessary machine wear and tear.
After detecting inefficient or restricted actions, the system alerts the operator and provides insight into the inefficiency and steps to improve.
Paired with a VisionLink Productivity subscription, this information and other Operator Coaching insights can be viewed from anywhere.

Standard integrated vehicle health management system alerts the operator with service guidance and parts needed to enhance uptime.
Enhance visibility to make service work easier and safer with optional inspection lighting.

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

More power to the pumps, wider undercarriage, and heavy counterweight enable up to 10 percent more productivity.

Match the excavator to the job with three power modes – Power, Smart, and Eco. Power mode is maximum power all the time. Smart mode automatically matches engine and hydraulic power to digging conditions, providing maximum power when needed and reducing power when it isn’t to help save fuel. Eco mode reduces engine speed and keeps it constant to reduce fuel consumption.

Reinforced structures ensure long-term durability in harsh environments.

Work up to 4500 m (14,764 ft) above sea level.

Standard high-ambient temperature capability is 52° C (125° F) with cold start capability at –18° C (0° F).

An optional battery operated engine heater enables starting at –32° C (–25.6° F).

Auto hydraulic oil warmup gets you to work faster in cold temperatures and helps prolong the life of components.

Two levels of filtration protect the engine from low-quality diesel fuel.

Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to increase undercarriage life.

Boost productivity with standard Cat Grade with 2D system – includes indicate-only and laser capability.

Want a 3D system to improve your digging results? Caterpillar's single antenna global navigation satellite system (GNSS) makes it easy by giving you visual and auditory guidance to grade. Plus, you can create and edit designs on the touchscreen monitor while you’re on the job. If your application calls for a dual antenna system, it’s easy to upgrade.

Upgrade to our dual antenna GNSS for maximum grading efficiency. The system lets you create and edit designs on the touchscreen monitor while you’re on the job, or you can have the plan design sent to the excavator to make your work easier. Plus, you get added benefits of avoidance zones, cut and fill mapping, lane guidance, and augmented reality along with advanced positioning capability.

Standard Grade Assist helps you stay on grade – simply and effortlessly – with single-lever digging.

Dig with guidance to depth, slope, and horizontal distance to grade. You can set up to four different depth and slope targets to help save time and money.

Automatically stop excavator swing at operator-defined set points in truck loading and trenching applications with Swing Assist.

Cat Payload helps you achieve precise load targets to improve your operating efficiency. Pick up a load of material--with a bucket and thumb combination or grapple and clamshell attachments--and get a real-time weight estimate without swinging.

Combine Payload with VisionLink® and remotely manage your production targets.

Operator Coaching is an in-cab system that recognizes specific opportunities for operators to be more productive and prevent unnecessary machine wear and tear.

Take The Guesswork Out of Managing Your Equipment

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.

Cat® Inspect is a mobile application that allows you to easily perform digital preventative maintenance (PM) checks, inspections, and daily walkarounds. Inspections can easily be integrated with other Cat data systems like VisionLink® so you can keep a close eye on your fleet.

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.

Boost productivity with proactive service reminders. Our integrated vehicle health management system alerts the operator with step-by-step service guidance along with parts needed so you don't experience any unnecessary downtime.

Expect low maintenance costs due to reduced hydraulic oil capacity and extended and synchronized service intervals.

The latest hydraulic oil filter provides high-quality filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and the extended replacement interval offers efficiency and convenience.

Filters are grouped and located on right-hand side of machine for easy maintenance.

Check hydraulic system oil and easily drain fuel system water and fuel tank water from ground level.

The advanced air intake filter with pre-cleaner has a high dust-holding capacity.

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^SMports are on ground level, simplifying maintenance and allowing 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.

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

Choose between Deluxe and Premium cabs – both with automatic climate control.

Deluxe cab comes with heated seat to keep you warm.

Premium cab comes with heated and ventilated seat for year-round comfort.

Tilt-up left console enables easy entry and exit.

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.

Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.

2D E-Fence prevents the excavator from moving outside of operator-defined set points; the system works with thumb and bucket combinations along with hammer, grapple, and clamshell attachments.

Cat Detect - People Detection helps protect the most valuable asset on any jobsite – people. The system uses smart cameras with depth sensors to provide the operator with visual and auditory alerts so he or she can take immediate action when a person is too close to the excavator.

Enhance jobsite safety by adding Cat Command to your fleet. The remote control system comes with everything you need like WIFI radio, cameras, and microphone so you can work outside of the cab and avoid potential hazards.

The Rollover Protective Structure (ROPS) cab meets industry standards and protects the operator in the event of a rollover.

Enjoy great visibility with the help of narrow cab pillars, large windows, and a flat engine hood design.

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.

Cat Lift Assist helps you avoid tipping by letting you know if your load is within the excavator’s safe working range.

A travel direction indicator helps you know which way to activate travel levers.

Enhance jobsite safety by adding a swing alarm to alert people when you're rotating from trench to stockpile and back again.

Keep your excavator secure with Operator ID. Use your PIN code on the monitor to enable the push button starting feature.

A ground-level shutoff switch stops all fuel to the engine when activated and shuts down the machine.

Serrated steps and anti-skid punch plate on the service platform help prevent slipping.

A rearview camera is standard.

Start the engine with the push of a button; use a Bluetooth key fob or Operator ID passcode.

Program each joystick button, including power mode, response, and pattern, using Operator ID; the machine will remember what you set each time you go to work.

Trouble cutting through tough material? Auto dig boost gives you an automatic power increase when you need it for better bucket penetration, shorter cycle times, and greater payloads.

Need more lift during your shift? Auto heavy lift gives you more power exactly when you need it for as long as you need it.

Make moving the excavator much easier with optional 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.

Make operating easier with the touch of a joystick button. An auxiliary relay allows you to power on or turn off a CB radio, beacon light, and even a dust suppression watering system without taking your hands off the joysticks.

Cat continues to improve user interface functionality for operators of all skill levels. The touchscreen monitor is an easy-to-use operating tool that presents the jobsite dashboard with an intuitive format.

Productivity applications are displayed in grid-view to read on-the-go, and touchscreen navigation is programmed to make sure job performance continues without any hold ups.

Protect your hammer from overworking. Auto hammer stop warns you after 15 seconds of continuous firing and then automatically shuts it off after 30 seconds – all to prevent wear and tear on the attachment and excavator.

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.

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 (hydrogenated 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.

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.

Auto Engine Speed Control reduces unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.

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.

Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.

Cat VisionLink® displays the CO2 emissions for monitored assets, calculated by fuel type for the Runtime Fuel Burned each day in a selected date range.

Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.

Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.

*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.

The Cat® 340 Variable Angle Boom 6.6m (21'8") (VAB) provides one extra articulation to maximize your application range while minimizing the space required to rotate in tight earthmoving and demolition sites, allowing you to work closer to the machine.

On-Board Cat Technology Helps Increase Efficiency

This configuration is equipped with standard Cat technologies, including Standard Grade Assist, Cat Payload, and 2D E-Fence, which boosts operating efficiency through technology and is compatible with VisionLink®, Cat PL161 attachment locator, Remote Troubleshoot, Remote Flash, and Cat Inspect, allowing you to eliminate the guesswork in managing your equipment.
Cat Grade Assist for excavators automates boom and stick movements for more accurate cuts with less effort. It uses machine position sensors and operator-defined depth and slope parameters to enable single-lever digging, helping improve efficiency.
Cat Payload helps you achieve precise load targets to improve your operating efficiency. Pick up a load of material--with a bucket and thumb combination or grapple and clamshell attachments--and get a real-time weight estimate without swinging.
The 2D E-Fence prevents the excavator from moving outside operator-defined set points. The system works with thumb and bucket combinations, hammer, grapple, and clamshell attachments.

Demolition Cab Compatibility

For demanding demolition sites, the 340 VAB is compatible with the optional demolition cab that tilts up to 30° for a more productive and comfortable sight line.
The front windshield and roof window are made with EN 356 P5A glazing for enhanced impact resistance and have one-piece parallel wipers with three intermittent settings and washer spray.
Standard Operator Protective Guards (OPG) help protect the roof and front reinforced EN356 P5A laminated windows from falling debris during demolition while helping to maintain visibility on the jobsite.
The optional demolition cab features a larger premium heated and cooled seat with a 254 mm (10 in) high-resolution touchscreen monitor. The monitor allows operators to view the active stability monitoring system, which gives audible and visual alerts when the work tool's position approaches its stability limit.
Get in and out of the cab with ease using the tip-up left console.
Control the excavator comfortably with easy-to-reach controls located in front of you.
Stow your gear with plenty of in-cab storage beneath and behind the seat, overhead, and in the consoles.
Use the standard radio’s USB ports and Bluetooth® technology to connect personal devices and make hands-free calls.
Rearview and side-view cameras are standard. You can also upgrade to 360° visibility to view objects and personnel around the machine in a single view.
Grease sealed between track pins and bushings reduces travel noise and prevents debris from entering to increase undercarriage life.

The 340 VAB configuration is available for Europe only.

Specifications Standard Equipment Optional Equipment

Product Specifications for 340 - Tier 4 / Stage V

Engine

Net Power - ISO 9249	346 hp 258.3 kW
Engine Model	Cat C9.3B Cat C9.3B
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 2,000 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 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. 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

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	105214 ft·lbf 143 kN·m

Weights

Operating Weight

83100 lb 37700 kg

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 - Each	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	Reach 6.5 m (21'4") Reach 6.5 m (21'4")
Stick	Reach 3.9 m (12'10") Reach 3.9 m (12'10")
Bucket	HD 2.36 m³ (3.08 yd³) HD 2.36 m³ (3.08 yd³)
Handrail Height	10.5 ft 3180 mm
Shipping Length	36.8 ft 11180 mm
Tail Swing Radius	11.7 ft 3530 mm
Counterweight Clearance	4.2 ft 1260 mm
Ground Clearance	1.8 ft 510 mm
Track Length	16.6 ft 5030 mm
Track Length to Center of Rollers	13.3 ft 4040 mm

Working Ranges and Forces

Boom	Reach 6.5 m (21'4") Reach 6.5 m (21'4")
Stick	Reach 3.9 m (12'10") Reach 3.9 m (12'10")
Bucket	HD 2.36 m³ (3.08 yd³) HD 2.36 m³ (3.08 yd³)
Maximum Loading Height	24.5 ft 7470 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	26.5 ft 8080 mm
Maximum Vertical Wall Digging Depth	21.1 ft 6420 mm

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. 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.

340 - Tier 4 / Stage V Standard Equipment

NOTE

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

CAT TECHNOLOGY

VisionLink®

Remote Flash

Remote Troubleshoot

Compatibility with radios and base stations from Trimble, Topcon, and Leica

Capability to install 3D grade systems from Trimble, Topcon, and Leica

Cat Grade 2D

Cat Assist

Cat Payload

Auto hammer stop

Work tool recognition (PL161)

Work tool tracking (PL161)

ELECTRICAL SYSTEM

Maintenance-free 1,000 CCA batteries (x2)

Centralized electrical disconnect switch

LED exterior chassis and boom lights

ENGINE

Three selectable modes: Power, Smart, Eco

Auto engine speed control

- 18° C (0° F) cold start capability

Double element air filter with integrated pre-cleaner

Remote disable

HYDRAULIC SYSTEM

Boom and stick regeneration circuit

Electronic main control valve

Auto heavy lift

Auto dig boost

Auto hydraulic oil warmup

Bio hydraulic oil capability

Fine swing

Reverse swing damping valve

Auto swing parking brake

High performance hydraulic return filter

Two speed travel

SAFETY AND SECURITY

Cat E-Fence

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 & recessed bolts

RH handrail and handhold

Signaling / warning horn

Ground-level secondary engine shutoff switch

Rearview camera

Inspection Lighting

SERVICE AND MAINTENANCE

Integrated vehicle health management system

Grouped location of engine oil & fuel filters

Sampling ports for Scheduled Oil Sampling (S·O·S℠)

UNDERCARRIAGE AND STRUCTURES

Towing eye on base frame

Swivel guard

HD bottom guard

HD travel motor guards

Grease lubricated track

HD swing frame

HD swing bearing

7.56 mt (16,667 lb) counterweight

DELUXE CAB

High-resolution 203 mm (8") LCD touchscreen monitor

Auto bi-level air conditioner

Jog dial and shortcut keys for monitor control

Keyless push-to-start engine control

Height-adjustable console

Tilt-up left-side console

Heated air-suspension seat

Monitor integrated Bluetooth radio with USB/Aux ports

12V DC outlets

Document storage

Overhead storage and rear storage with nets

Beverage holder

Cup holder

Openable two-piece front window

Rear window emergency exit

Radial wiper with washer

Openable polycarbonate skylight hatch

LED dome light

Floor welcome light

Roof sunscreen

Roller front sunscreen

Washable floor mat

Beacon ready

PREMIUM CAB

High-resolution 254 mm (10") LCD touchscreen monitor

Auto bi-level air conditioner

Jog dial and shortcut keys for monitor control

Keyless push-to-start engine control

Height-adjustable console

Tilt-up left-side console

Heated and ventilated air-suspension seat

Monitor integrated Bluetooth radio with USB/Aux ports

12V DC outlets

Document storage

Overhead storage and rear storage with nets

Beverage holder

Cup holder

Openable two-piece front window

Rear window emergency exit

Parallel wiper

Openable polycarbonate skylight hatch

LED dome light

Floor welcome light

Roof sunscreen

Roller front sunscreen

Washable floor mat

Beacon ready

340 - Tier 4 / Stage V Optional Equipment

NOTE

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

BOOMS AND STICKS

6.18 m (20'3") Mass boom

6.5 m (21'4") HD Reach boom

2.55 m (8'4") Mass stick

2.8 m (9'2") HD Reach stick

3.2 m (10'6") HD Reach stick

3.9 m (12'10") HD Reach stick

TB family bucket linkage with/without lifting eye

DB family bucket linkage with/without lifting eye

CAT TECHNOLOGY

Cat Grade Connectivity

Cat Grade 2D with Attachment Ready Option (ARO)

Cat Grade with 3D single GNSS

Cat Grade with 3D dual GNSS

Cat Tilt Rotator (TRS) Integration

Operator Coaching

ELECTRICAL SYSTEM

Maintenance-free 1,000 CCA batteries (x4)

ENGINE

Oil level sensor

Battery-operated engine heater

Cold start block heater

52°C (126°F) high-ambient cooling

Hydraulic reverse fan

-32°C (-25°F) cold start capability

HYDRAULIC SYSTEM

Single one-way circuit

Combined two-way circuit

Hydraulic efficiency monitoring

SAFETY AND SECURITY

Cat Detect - People Detection

Cat Command remote control

Swing alarm

Boom lowering check valve

Stick lowering check valve

UNDERCARRIAGE AND STRUCTURES

Full-length track guiding guards

Segmented two-piece track guiding guards

HD rollers

600 mm (24") double grouser, triple grouser, HD triple grouser track shoes

700 mm (28") triple grouser track shoes

800 mm (31") triple grouser track shoes

850 mm (33") triple grouser track shoes

DELUXE CAB

High-resolution 254 mm (10") LCD touchscreen monitor

Roller rear sunscreen

Cat Stick Steer

Auxiliary relay

PREMIUM CAB

One-piece front windshield

Cat Stick Steer

Auxiliary relay

Product Specifications for 340 - Tier 4 / Stage V

Download Print

Engine

Net Power - ISO 9249	346 hp 258.3 kW
Engine Model	Cat C9.3B Cat C9.3B
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 2,000 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 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. 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

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	105214 ft·lbf 143 kN·m

Weights

Operating Weight

83100 lb 37700 kg

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 - Each	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	Reach 6.5 m (21'4") Reach 6.5 m (21'4")
Stick	Reach 3.9 m (12'10") Reach 3.9 m (12'10")
Bucket	HD 2.36 m³ (3.08 yd³) HD 2.36 m³ (3.08 yd³)
Handrail Height	10.5 ft 3180 mm
Shipping Length	36.8 ft 11180 mm
Tail Swing Radius	11.7 ft 3530 mm
Counterweight Clearance	4.2 ft 1260 mm
Ground Clearance	1.8 ft 510 mm
Track Length	16.6 ft 5030 mm
Track Length to Center of Rollers	13.3 ft 4040 mm

Working Ranges and Forces

Boom	Reach 6.5 m (21'4") Reach 6.5 m (21'4")
Stick	Reach 3.9 m (12'10") Reach 3.9 m (12'10")
Bucket	HD 2.36 m³ (3.08 yd³) HD 2.36 m³ (3.08 yd³)
Maximum Loading Height	24.5 ft 7470 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	26.5 ft 8080 mm
Maximum Vertical Wall Digging Depth	21.1 ft 6420 mm

Air Conditioning System

Air Conditioning

340 - Tier 4 / Stage V Standard Equipment

NOTE

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

CAT TECHNOLOGY

VisionLink®

Remote Flash

Remote Troubleshoot

Compatibility with radios and base stations from Trimble, Topcon, and Leica

Capability to install 3D grade systems from Trimble, Topcon, and Leica

Cat Grade 2D

Cat Assist

Cat Payload

Auto hammer stop

Work tool recognition (PL161)

Work tool tracking (PL161)

ELECTRICAL SYSTEM

Maintenance-free 1,000 CCA batteries (x2)

Centralized electrical disconnect switch

LED exterior chassis and boom lights

ENGINE

Three selectable modes: Power, Smart, Eco

Auto engine speed control

- 18° C (0° F) cold start capability

Double element air filter with integrated pre-cleaner

Remote disable

HYDRAULIC SYSTEM

Boom and stick regeneration circuit

Electronic main control valve

Auto heavy lift

Auto dig boost

Auto hydraulic oil warmup

Bio hydraulic oil capability

Fine swing

Reverse swing damping valve

Auto swing parking brake

High performance hydraulic return filter

Two speed travel

SAFETY AND SECURITY

Cat E-Fence

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 & recessed bolts

RH handrail and handhold

Signaling / warning horn

Ground-level secondary engine shutoff switch

Rearview camera

Inspection Lighting

SERVICE AND MAINTENANCE

Integrated vehicle health management system

Grouped location of engine oil & fuel filters

Sampling ports for Scheduled Oil Sampling (S·O·S℠)

UNDERCARRIAGE AND STRUCTURES

Towing eye on base frame

Swivel guard

HD bottom guard

HD travel motor guards

Grease lubricated track

HD swing frame

HD swing bearing

7.56 mt (16,667 lb) counterweight

DELUXE CAB

High-resolution 203 mm (8") LCD touchscreen monitor

Auto bi-level air conditioner

Jog dial and shortcut keys for monitor control

Keyless push-to-start engine control

Height-adjustable console

Tilt-up left-side console

Heated air-suspension seat

Monitor integrated Bluetooth radio with USB/Aux ports

12V DC outlets

Document storage

Overhead storage and rear storage with nets

Beverage holder

Cup holder

Openable two-piece front window

Rear window emergency exit

Radial wiper with washer

Openable polycarbonate skylight hatch

LED dome light

Floor welcome light

Roof sunscreen

Roller front sunscreen

Washable floor mat

Beacon ready

PREMIUM CAB

High-resolution 254 mm (10") LCD touchscreen monitor

Auto bi-level air conditioner

Jog dial and shortcut keys for monitor control

Keyless push-to-start engine control

Height-adjustable console

Tilt-up left-side console

Heated and ventilated air-suspension seat

Monitor integrated Bluetooth radio with USB/Aux ports

12V DC outlets

Document storage

Overhead storage and rear storage with nets

Beverage holder

Cup holder

Openable two-piece front window

Rear window emergency exit

Parallel wiper

Openable polycarbonate skylight hatch

LED dome light

Floor welcome light

Roof sunscreen

Roller front sunscreen

Washable floor mat

Beacon ready

340 - Tier 4 / Stage V Optional Equipment

NOTE

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

BOOMS AND STICKS

6.18 m (20'3") Mass boom

6.5 m (21'4") HD Reach boom

2.55 m (8'4") Mass stick

2.8 m (9'2") HD Reach stick

3.2 m (10'6") HD Reach stick

3.9 m (12'10") HD Reach stick

TB family bucket linkage with/without lifting eye

DB family bucket linkage with/without lifting eye

CAT TECHNOLOGY

Cat Grade Connectivity

Cat Grade 2D with Attachment Ready Option (ARO)

Cat Grade with 3D single GNSS

Cat Grade with 3D dual GNSS

Cat Tilt Rotator (TRS) Integration

Operator Coaching

ELECTRICAL SYSTEM

Maintenance-free 1,000 CCA batteries (x4)

ENGINE

Oil level sensor

Battery-operated engine heater

Cold start block heater

52°C (126°F) high-ambient cooling

Hydraulic reverse fan

-32°C (-25°F) cold start capability

HYDRAULIC SYSTEM

Single one-way circuit

Combined two-way circuit

Hydraulic efficiency monitoring

SAFETY AND SECURITY

Cat Detect - People Detection

Cat Command remote control

Swing alarm

Boom lowering check valve

Stick lowering check valve

UNDERCARRIAGE AND STRUCTURES

Full-length track guiding guards

Segmented two-piece track guiding guards

HD rollers

600 mm (24") double grouser, triple grouser, HD triple grouser track shoes

700 mm (28") triple grouser track shoes

800 mm (31") triple grouser track shoes

850 mm (33") triple grouser track shoes

DELUXE CAB

High-resolution 254 mm (10") LCD touchscreen monitor

Roller rear sunscreen

Cat Stick Steer

Auxiliary relay

PREMIUM CAB

One-piece front windshield

Cat Stick Steer

Auxiliary relay

Compatible Technology and Services

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

Assist

Grade

Payload

Productivity

Cat Grade Assist for Excavators

Cat Grade 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.

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Cat Grade 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.

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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.

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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.

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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.

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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.

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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.

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Operator Coaching for Excavators

Operator Coaching allows operators of all experience levels to take their efficiency and productivity to the next level. With tips and data at their fingertips, operators can track and improve their productivity through everyday work on the job site.

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Operator Coaching allows operators of all experience levels to take their efficiency and productivity to the next level. With tips and data at their fingertips, operators can track and improve their productivity through everyday work on the job site.

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See how 340 - Tier 4 / Stage V compares against frequently compared products.

Excavators

Selected

340 - Tier 4 / Stage V Cat® 340 Hydraulic Excavator

Net Power - ISO 9249: 346 hp; 258.3 kW
Operating Weight: 83100 lb; 37700 kg
Engine Model: Cat C9.3B; Cat C9.3B

Excavators

336 -Tier 4 / Stage V Cat® 336 Hydraulic Excavator

Net Power - ISO 9249: 300 hp; 223.5 kW
Operating Weight: 81100 lb; 36800 kg
Engine Model: Cat C7.1 TTA; Cat C7.1 TTA

View Details

Excavators

350 - Tier 4 / Stage V Cat® 350 Hydraulic Excavator

Net Power - ISO 9249: 413 hp; 308 kW
Operating Weight: 105100 lb; 46000 kg
Maximum Digging Depth: 26.11 ft; 8210 mm

View Details

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

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340 Hydraulic Excavator

Stick Steer for Cat® Excavators

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Large Excavators 340 - Tier 4 / Stage V

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Benefits

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Features At A Glance

Product Specifications for 340 - Tier 4 / Stage V

Engine

Hydraulic System

Swing Mechanism

Weights

Service Refill Capacities

Dimensions

Working Ranges and Forces

Air Conditioning System

340 - Tier 4 / Stage V Standard Equipment

NOTE

CAT TECHNOLOGY

ELECTRICAL SYSTEM

ENGINE

HYDRAULIC SYSTEM

SAFETY AND SECURITY

SERVICE AND MAINTENANCE

UNDERCARRIAGE AND STRUCTURES

DELUXE CAB

PREMIUM CAB

340 - Tier 4 / Stage V Optional Equipment

NOTE

BOOMS AND STICKS

CAT TECHNOLOGY

ELECTRICAL SYSTEM

ENGINE

HYDRAULIC SYSTEM

SAFETY AND SECURITY

UNDERCARRIAGE AND STRUCTURES

DELUXE CAB

PREMIUM CAB

Product Specifications for 340 - Tier 4 / Stage V

Engine

Hydraulic System

Swing Mechanism

Weights

Service Refill Capacities

Dimensions

Working Ranges and Forces

Air Conditioning System

340 - Tier 4 / Stage V Standard Equipment

NOTE

CAT TECHNOLOGY

ELECTRICAL SYSTEM

ENGINE

HYDRAULIC SYSTEM

SAFETY AND SECURITY

SERVICE AND MAINTENANCE

UNDERCARRIAGE AND STRUCTURES

DELUXE CAB

PREMIUM CAB

340 - Tier 4 / Stage V Optional Equipment

NOTE

BOOMS AND STICKS

CAT TECHNOLOGY

ELECTRICAL SYSTEM

ENGINE

HYDRAULIC SYSTEM

SAFETY AND SECURITY

UNDERCARRIAGE AND STRUCTURES

DELUXE CAB

PREMIUM CAB

Compatible Technology and Services

Cat Grade Assist for Excavators

Cat Grade with 2D for Excavators

Cat Grade with 3D for Excavators

Cat Payload for Excavators

Operator Coaching for Excavators

See how 340 - Tier 4 / Stage V compares against frequently compared products.

Tools And Expert Help At Every Turn

assignment Product Brochures and More Are Ready to Download!

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Product Brochures and More Are Ready to Download!