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Medium excavators

Cat 320 - Tier 3

In stock

Price on request

Net Power - ISO 9249

117 kW

Operating Weight

21.300 kg

Maximum Digging Depth

6.720 mm

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Feature and benefits

The Cat® 320 raises the bar for efficiency and fuel economy in this size class. With the industry’s highest level of standard factory technology, an ergonomic cab focused on operator comfort and productivity, plus lower fuel and maintenance costs, the 320 will set a new pace for productivity and profit in your operation.

Latest features

Cab Monitor Improvements. Continuously improved user interface allows f…

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.

Operator Coaching -Empower Operators. Exceed 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.
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.

Not all features are available in all regions. Please check with your local Cat dealer for specific offering availability in your area. Build Number: 07G

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Do more with less fuel

Use up to 20% less fuel than the Cat 320D2 excavator. Increase operating e…

Use up to 20% less fuel than the Cat 320D2 excavator.
Increase operating efficiency up to 45% with standard Cat technologies that lower operator fatigue and your operating costs, including fuel consumption and daily maintenance.
The C7.1 engine can run on biodiesel up to B20 and meets Brazil Mar-1 equivalent emission standards.
The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.
Match the excavator to the job with power modes; let Smart mode automatically match engine and hydraulic power to your digging conditions.
Advansys™ bucket tips increase penetration and improve cycle times. Tip changes can be done quickly with a simple lug wrench instead of a hammer or special tool, improving safety and uptime.
Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
Don’t let the temperature stop you from working. The excavator has a standard high-ambient temperature capability of 52° C (125°F) and cold start capability of –18° C (0° F). An optional –32°C (–25° F) cold start package is available.

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Efficiency through technology

Boost productivity up to 45% versus traditional grading with standard Cat Grade with 2D system – inc…

Boost productivity up to 45% versus traditional grading with standard Cat Grade with 2D system – includes indicate-only and laser capability.
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.
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.
Already invested in another brand’s 3D system? No problem. Standard Cat technology like Grade with 2D can readily integrate with that system to give you the precise results you need.
Standard Grade Assist helps you stay on grade – simply and effortlessly – with single-lever digging.
Set your desired bucket angle and let Bucket Assist automatically maintain the angle in sloping, leveling, fine grading, and trenching applications.
Keep the tracks on ground in lifting and hard digging with Boom Assist.
Automatically stop excavator swing at operator-defined set points in truck loading and trenching applications with Swing Assist, which will help you use less effort and consume less fuel.
All Cat Grade systems are compatible with radios and base stations from Trimble, Topcon, and Leica. Already invested in a grade infrastructure? You can install grade systems from Trimble, Topcon, and Leica onto the machine.
Operator Coaching is an in-cab system that recognizes specific opportunities for operators to be more productive and prevent unnecessary machine wear and tear.

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Take the guesswork out of managing your equipment

VisionLink® provides actionable data insights for all assets - regardless of fleet size or equipment manu…

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.

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Designed for operators

Cab options let you choose the level of comfort you need. Enjoy wide spaci…

Cab options let you choose the level of comfort you need.
Enjoy wide spacing between consoles for a more spacious comfortable environment.
Sit in wide seats that adjust for operators of all sizes (heated and heated/cooled options are available).
Get in and out of the cab easier using the tip-up left console (in Deluxe cab only).
Control the excavator comfortably with easy-to-reach controls located in front of you. Standard automatic climate control keeps you at the right temperature throughout your shift.
Improved viscous mounts reduce cab vibration by up to 50% over our previous excavator models.
Stow your gear with plenty of in-cab storage behind the seat, overhead, and in the consoles.
The standard radio has USB ports and Bluetooth® technology enabled to connect your device and make hands-free calls.

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Simple to operate

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

Start the engine with a push button; use a Bluetooth® key fob, or the Operator ID passcode.
Program each joystick button, including response and pattern, using Operator ID; the machine will remember what you set each time you go to work.
Program up to four depth and slope offsets so you can easily get to grade without a grade checker – a real time saver and safety enhancer on the jobsite.
Navigate quickly on the standard high-resolution 203 mm (8in) touchscreen monitor, or with the optional 254 mm (10 in) touchscreen monitor, or with the aid of the jog dial control.
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.
Protect your hammer tool from overheating and rapid wear. Auto hammer stop warns you after 15 seconds of continuous firing and then automatically shuts it off after 30 seconds - all to extend the tool’s service 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.
Save more time and energy with the available work tool recognition feature. A simple shake of the attached tool confirms its identity and ensures all the attachment settings (pressure, flow, and dimensions) are correct so you can work quickly and efficiently.
Auto Dig Boost increases power by up to 8% for better bucket penetration, shorter cycle times, and greater payloads.
Need more lift during your shift? Turn on Auto Heavy Lift and get 8% more power exactly when you need it for as long as you need it.
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.
Make operating easier with the touch of a joystick button. Additional auxiliary relays allow 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 (Deluxe cab only).

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Save on service and maintenance

Expect up to 25% less maintenance cost than the 320D2 (savings calculated over 12,000 machine hours). &nb…

Expect up to 25% less maintenance cost than the 320D2 (savings calculated over 12,000 machine hours).
Boost productivity with proactive service reminders. The 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.
Do all daily maintenance at ground level.
Check engine oil level quickly and safely with the ground-level engine oil dipstick; fill and check engine oil on top of the machine with a conveniently located second dipstick.
Reversing electric cooling fans make it easy to clean radiator, oil coolers, and condensers.
The latest air intake filter with precleaner has double the dust holding capacity of the previous air intake filter.
Using Cat genuine oil and filters and doing your typical S∙O∙S^SM monitoring will double the current service interval to 1,000 hours, giving you greater uptime to do more work.
The latest hydraulic oil filter provides improved filtration performance, anti-drain valves to keep oil clean when the filter is replaced, and longer life with a 3,000 hour replacement interval – 50% longer than previous filter designs.
S·O·S ports are on ground level, simplifying maintenance and allowing for quick, easy extraction of fluid samples for analysis.

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Safely home every day

Cat Detect - People Detection helps protect the most valuable asset on any jobsite – people. The system u…

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.
Cat Command remote control enables equipment operators to work safely outside the machine when working in hazardous environments. Command offers the choice of handheld Consoles (line-of-sight) or long-distance virtual Stations (non-line-of-sight). Deep integration with machine systems enables efficiency and productivity by maintaining the use of in-cab technology* features (Grade, Payload, Assist, etc.).
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.
Access 100% of daily maintenance points from ground level – no need for you to climb on top of excavator.
The standard ROPS cab meets ISO 12117-2 2008 requirements.
Enjoy great visibility into the trench, in each swing direction, and behind you with the help of smaller cab pillars, larger windows, and a flat engine hood design.
The standard hydraulic lockout lever isolates all hydraulic and travel functions in the lowered position.
Ground level shut-off switch stops all fuel to the engine when activated and shuts down the machine.
A rearview camera is standard. Upgrade to 360° visibility and you'llsee objects and personnel around the excavator in a single view.
Right-hand service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping. The handrails comply with ISO 2867:2011 requirements.
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.
Enhance jobsite safety. Add a swing alarm to alert people when you're rotating from trench to stockpile and back again.

* Not all technology features are available on the Command Console and vary by model. Consult your Cat dealer for details.

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Technical specification

US
Metric

Engine

Specification	Value
Net Power - ISO 9249	117 kW
Net Power - ISO 9249 (DIN)	159 hp (metric)
Engine Model	Cat C7.1
Engine Power - ISO 14396	118 kW
Engine Power - ISO 14396 (DIN)	160 hp (metric)
Bore	105 mm
Stroke	135 mm
Displacement	7.01 l
Biodiesel Capability	Up to B20¹
Emissions	Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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 1,800 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% 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. 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

Specification	Value
Main System - Maximum Flow	429 l/min (113 gal/min)
Maximum Pressure - Equipment	35.000 kPa
Maximum Pressure - Equipment - Lift Mode	38.000 kPa
Maximum Pressure - Travel	34.300 kPa
Maximum Pressure - Swing	27.500 kPa

Swing Mechanism

Specification	Value
Swing Speed	11.3 r/min
Maximum Swing Torque	82 kN·m

Weights

Specification	Value
Operating Weight	21.300 kg
Note	Heavy Duty (HD) Reach boom, HD R2.9 (9'6") stick, HD 1.19 m³ (1.56 yd³) bucket, 600 mm (24") triple grouser shoes, and 3700 kg (8,200 lb) counterweight.

Service Refill Capacities

Specification	Value
Fuel Tank Capacity	345 l
Cooling System	25 l
Engine Oil	25 l
Swing Drive - Each	6 l
Final Drive - Each	5 l
Hydraulic System - Including Tank	234 l
Hydraulic Tank	115 l

Dimensions

Specification	Value
Boom	HD Reach 5.7 m (18'8")
Stick	HD Reach 2.9 m (9'6")
Bucket	HD 1.19 m³ (1.56 yd³)
Shipping Height - Top of Cab	2.960 mm
Handrail Height	2.950 mm
Shipping Length	9.530 mm
Tail Swing Radius	2.830 mm
Counterweight Clearance	1.050 mm
Ground Clearance	470 mm
Track Length	4.450 mm
Length to Center of Rollers	3.650 mm
Track Gauge	2.380 mm
Transport Width	2.980 mm

Working Ranges & Forces

Specification	Value
Maximum Digging Depth	6.720 mm
Boom	HD Reach 5.7 m (18'8")
Stick	HD Reach 2.9 m (9'6")
Bucket	HD 1.19 m³ (1.56 yd³)
Maximum Reach at Ground Level	9.860 mm
Maximum Cutting Height	9.370 mm
Maximum Loading Height	6.490 mm
Minimum Loading Height	2.170 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom	6.550 mm
Maximum Vertical Wall Digging Depth	5.190 mm
Bucket Digging Force - ISO	150 kN
Stick Digging Force - ISO	106 kN

Note

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

Cab

Rollover protective structure (ROPS)
Mechanical-suspension seat (Comfort only)
Heated air-suspension seat (Deluxe only)
High-resolution 203 mm (8 in) LCD touchscreen monitor

Cat technology

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

Electrical system

Two 1,000 CCA maintenance-free batteries
Programmable time-delay LED working lights
LED chassis light, left-hand/right-hand boom lights, cab lights

Engine

Cat C7.1 single turbo diesel engine
Three selectable power modes
Automatic engine speed control
Auto engine idle shutdown
52°C (125°F) high-ambient cooling capacity
-18°C (0°F) cold start capability
Double element air filter with integrated precleaner
Reversing electric cooling fans

Hydraulic system

Boom and stick regeneration circuits
Auto warm up
Auto two-speed travel
Boom and stick drift reduction valve
Auto hydraulic warm up
Slider joysticks

Safety and security

2D E-Fence
Auto hammer stop
Rearview camera
Right-hand mirror
Cat asset tracker
Ground-level engine shutoff switch
Lockable disconnect switch
Right-hand handrail and hand hold
Signaling/warning horn

Service and maintenance

Scheduled Oil Sampling (S·O·S℠) ports
Ground-level and platform-level engine oil dipsticks
Integrated vehicle health management system

Undercarriage and structures

4700 kg (10,400 lb) counterweight for SLR boom and stick
Tie-down points on base frame

Note

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

Booms and sticks

5.7 m (18'8") HD Reach boom
8.85 m (29'0") Super Long Reach boom
2.9 m (9'6") HD Reach stick
2.5 m (8'2") HD Reach stick
2.9 m (9'6") SD Reach stick (Kingdom of Saudi Arabia only)
2.5 m (8'2") SD Reach stick (Kingdom of Saudi Arabia only)
6.28 m (20'7") Super Long Reach stick

Cab

High-resolution 254 mm (10 in) LCD touchscreen monitor
Cat Stick Steer

Cat technology

VisionLink Productivity
Cat Grade 2D with Attachment Ready Option (ARO)
Cat Grade 3D single GNSS
Cat Grade 3D dual GNSS
Cat Tilt Rotator (TRS) Integration
Operator Coaching

Electrical system

Four 1,000 CCA maintenance-free batteries

Engine

-32°C (-25°F) cold start capability

Hydraulic system

Hammer return filter circuit
Hydraulic efficiency monitoring
Auto Heavy Lift
Tool control (two pump, one/two way high-pressure flow)
Basic tool control (one pump, one way high-pressure flow)
Quick coupler circuit for Cat Pin Grabber

Safety and security

Cat Command (remote control)
Right-hand-sideview camera
360° visibility
Travel alarm
Swing alarm
Inspection lighting

Undercarriage and structures

600 mm (24") double grouser shoes
600 mm (24") triple grouser shoes
700 mm (28") triple grouser shoes
790 mm (31") tripler grouser shoes
3700 kg (8,160 lb) counterweight
4200 kg (9,300 lb) counterweight

Download technical specifications

Learn more information about the Cat 320 Hydraulic Excavator.

Download (2.22 MB, PDF)

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Medium excavators

Cat 320 - Tier 3

Feature and benefits

Latest features

Do more with less fuel

Efficiency through technology

Take the guesswork out of managing your equipment

Designed for operators

Simple to operate

Save on service and maintenance

Safely home every day

Technical specification

Engine

Hydraulic System

Swing Mechanism

Weights

Service Refill Capacities

Dimensions

Working Ranges & Forces

Note

Cab

Cat technology

Electrical system

Engine

Hydraulic system

Safety and security

Service and maintenance

Undercarriage and structures

Note

Booms and sticks

Cab

Cat technology

Electrical system

Engine

Hydraulic system

Safety and security

Undercarriage and structures

Download technical specifications

Media gallery

Frequently compared machines

Service Solutions

Warranty & Guarantee

Technology

Financing

Get in touch with our sales team

Speak with our local experts

Get in touch with
our sales team