320

Medium Excavators 320 Tier 3

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Key Specs

Net Power - ISO 9249
157 hp
117 kW
Operating Weight
47000 lb
21300 kg
Maximum Digging Depth
22 ft
6720 mm

Overview

Peak Performance, User-Friendly Technology

The Cat® 320 raises the bar with fuel-saving hydraulics, advanced technology, and an operator-focused cab - delivering lower fuel and maintenance costs and higher productivity for site prep, truck loading, trenching, and utility work.

Benefits

Low Fuel Consumption

A precise combination of low engine speed and a large hydraulic pump help burn less fuel, delivering top performance.

Lower Maintenance Costs

Extended and synchronized maintenance intervals help you get more done at a lower cost compared to the previous model.

High Operating Efficiency

Cat Grade with 2D, Cat Payload, Auto Dig Boost*, and Auto Heavy Lift* come standard, helping operators dig with precision, load faster, and move more material every hour.

*Not available on Super Long Reach configurations.

Features At A Glance

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Latest Features

Latest Features

Machine Setup Simplification
        
  • At the touch of fingertips and navigating user-friendly icons, the latest operator oriented User Interface (UI) maximizes uptime and gets crews to work without delay. From re-ordering work tool lists to creating new work tool combinations as needed, operators can quickly set up machines and easily access information.
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  • The interface allows operators to maintain accuracy and makes the most of every second of their shift. Adding the ability to input couplers and attachments into the system makes setting up work tool combinations highly efficient by significantly reducing calibration time. It also eliminates the need to measure up again when changing Cat® work tool attachments and makes it manageable for a single person to check and adjust for bucket wear.

Cat® Grade 3D Ready
        
  • The Cat Grade 3D Ready option includes all the hardware required for the Grade with 3D system, installed and tested from the factory. This option provides an easier upgrade path for customers who want to add Grade with 3D after their initial purchase. To activate, contact your Cat Dealer to purchase the required 3D software licenses. Licenses can be installed remotely or manually loaded onto the machine.

Cat Payload and Advanced Payload*
        
  • Cat Payload provides operators with on-the-go weighing to help them hit load targets and avoid overloading, underloading, or misloading materials. Advanced Payload is a system upgrade that offers expanded features and capabilities, including custom tags, daily totals, and electronic ticketing. Combine Payload with VisionLink™** to analyze jobsites and individual assets for remote management of production targets and key metrics.

*Payload technologies are not legal for trade.
**VisionLink subscription required. 


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

Do More with Less Fuel

        
  • Leverage standard Cat® technologies to streamline operating efficiency -- help reduce fuel consumption and daily maintenance costs with VisionLink, Cat Assist, Cat Payload, and more.
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  • The C7.1 engine can run on biodiesel up to B20 and meets Brazil Mar-1 equivalent emission standards.
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  • The advanced hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.
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  • Match the excavator to the job with power modes; let Smart mode automatically match engine and hydraulic power to your digging conditions.
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  • 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.
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  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
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  • 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.
Efficiency Through Technology

Efficiency Through Technology

        
  • The latest operator oriented User Interface (UI) has been designed to maximize uptime by allowing operators to easily reorder work tool lists and quickly create new work tool combinations. It also eliminates the need to measure up again when changing Cat® work tool attachments and makes it manageable for a single person to check and adjust for bucket wear.
  •     
  • Leverage standard Cat Grade with 2D system with indicate-only and laser capability to help boost productivity.
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  • 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.
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  • 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.
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  • 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.
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  • The Cat Grade 3D Ready option includes all the hardware required for the Grade with 3D system, installed and tested from the factory. Activation requires the purchase of additional 3D software licenses.
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  • Standard Grade Assist helps you stay on grade – simply and effortlessly – with single-lever digging.
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  • Keep the tracks on ground in lifting and hard digging with Boom Assist.
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  • Set your desired bucket angle and let Bucket Assist automatically maintain the angle in sloping, leveling, fine grading, and trenching applications.
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  • 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.
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  • 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.
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  • Advanced Payload is a system upgrade that offers expanded features and capabilities, including custom tags, daily totals, and electronic ticketing.
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  • Combine Payload with VisionLink™ and remotely manage your production targets.
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  • Optional 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

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. Equipment management features provide up-to-date asset tracking of your entire fleet. You can track asset location, operating hours, fuel level, health issues, and overall utilization. Monitor equipment health with fault codes, fluid analysis, and inspection due dates. It's all about making informed, data-based decisions to help reduce operating costs. Productivity management features enable you to analyze overall job site performance. You'll be able to track tonnage moved, production targets, and payload, as well as Grade 3D and compaction data. These vital metrics help you to reduce costs and improve jobsite operational efficiency.
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  • 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.
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  • 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.
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  • 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.
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  • 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.
Designed for Operators

Designed for Operators

        
  • Cab options let you choose the level of comfort you need.
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  • Enjoy wide spacing between consoles for a more spacious comfortable environment.
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  • Sit in wide seats that adjust for operators of all sizes (heated and heated/cooled options are available).
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  • Get in and out of the cab easier using the tip-up left console (in Deluxe cab only).
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  • 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.
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  • Stow your gear with plenty of in-cab storage behind the seat, overhead, and in the consoles.
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  • The standard radio has USB ports and Bluetooth® technology enabled to connect your device and make hands-free calls.
Simple to Operate

Simple to Operate

        
  • Start the engine with a push button; use a Bluetooth® key fob, or the Operator ID passcode.
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  • Program each joystick button, including response and pattern, using Operator ID; the machine will remember what you set each time you go to work.
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  • 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.
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  • 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.
  •     
  • Continuously improved user interface allows for intuitive navigation, minimizing performance interruption with the easy-to-use touchscreen menu.
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  • Use the in-monitor QR code to learn about machine and technology features through a full suite of “how-to” videos.
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  • 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.*
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  • Auto Dig Boost increases power by up to 8% for better bucket penetration, shorter cycle times, and greater payloads.**
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  • Need more lift during your shift? Turn on Auto Heavy Lift and get up to 8% more power exactly when you need it for as long as you need it.**
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  • 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).

*Automated attachment settings must be enabled within each machine configuration. Consult your Cat dealer for details.
**Auto Dig Boost and Auto Heavy Lift calculations are based on 380 bar (boost pressure) divided by 350 bar (standard pressure). Does not apply to long reach excavators.

Product Specifications for 320

Net Power - ISO 9249 157 hp 117 kW
Net Power - ISO 9249 (DIN) 159 hp (metric) 159 hp (metric)
Engine Model Cat® C7.1 Cat® C7.1
Engine Power - ISO 14396 158 hp 118 kW
Engine Power - ISO 14396 (DIN) 160 hp (metric) 160 hp (metric)
Bore 4 in 105 mm
Stroke 5 in 135 mm
Displacement 428 in³ 7.01 l
Biodiesel Capability Up to B20¹ Up to B20¹
Emissions Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. 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. 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. 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.
Operating Weight 47000 lb 21300 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. 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.
Maximum Digging Depth 22 ft 6720 mm
Boom HD Reach 5.7 m (18'8") HD Reach 5.7 m (18'8")
Stick HD Reach 2.9 m (9'6") HD Reach 2.9 m (9'6")
Bucket HD 1.19 m³ (1.56 yd³) HD 1.19 m³ (1.56 yd³)
Maximum Reach at Ground Level 32.3 ft 9860 mm
Maximum Cutting Height 30.7 ft 9370 mm
Maximum Loading Height 21.3 ft 6490 mm
Minimum Loading Height 7.1 ft 2170 mm
Maximum Depth Cut for 2440 mm (8 ft) Level Bottom 21.5 ft 6550 mm
Maximum Vertical Wall Digging Depth 17 ft 5190 mm
Bucket Digging Force - ISO 33811 lbf 150 kN
Stick Digging Force - ISO 23911 ft·lbf 106 kN
Main System - Maximum Flow 429 l/min (113 gal/min) 429 l/min (113 gal/min)
Maximum Pressure - Equipment 5075 psi 35000 kPa
Maximum Pressure - Equipment - Lift Mode 5510 psi 38000 kPa
Maximum Pressure - Travel 4974 psi 34300 kPa
Maximum Pressure - Swing 3988 psi 27500 kPa
Swing Speed* 11.3 r/min 11.3 r/min
Maximum Swing Torque 60300 lbf·ft 82 kN·m
Note (1) *For CE-marked machine default value may be set lower. *For CE-marked machine default value may be set lower.
Fuel Tank Capacity 91.1 gal (US) 345 l
Cooling System 6.6 gal (US) 25 l
Engine Oil 6.6 gal (US) 25 l
Swing Drive 1.6 gal (US) 6 l
Final Drive - Each 1.3 gal (US) 5 l
Hydraulic System - Including Tank 61.8 gal (US) 234 l
Hydraulic Tank 30.4 gal (US) 115 l
Boom HD Reach 5.7 m (18'8") HD Reach 5.7 m (18'8")
Stick HD Reach 2.9 m (9'6") HD Reach 2.9 m (9'6")
Bucket HD 1.19 m³ (1.56 yd³) HD 1.19 m³ (1.56 yd³)
Shipping Height - Top of Cab 9.7 ft 2960 mm
Handrail Height 9.8 ft 2950 mm
Shipping Length 31.3 ft 9530 mm
Tail Swing Radius 9.3 ft 2830 mm
Counterweight Clearance 3.4 ft 1050 mm
Ground Clearance 1.5 ft 470 mm
Track Length 14.7 ft 4450 mm
Length to Center of Rollers 12 ft 3650 mm
Track Gauge 7.8 ft 2380 mm
Transport Width 9.8 ft 2980 mm
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons). The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg (1.9 lb) of refrigerant which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).

320 Standard Equipment

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
  • Work tool recognition and tracking (PL161)
  • Cat Grade with 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
  • 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

  • Tie-down points on base frame

320 Optional Equipment

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

  • Operator Protective Guards (OPG)
  • High-resolution 254 mm (10 in) LCD touchscreen monitor
  • Cat Stick Steer

CAT TECHNOLOGY

  • Operator Coaching
  • Cat Grade with 2D with Attachment Ready Option (ARO)
  • Cat Grade with 3D (single or dual GNSS)
  • Cat Grade 3D Ready
  • Cat Advanced Payload
  • Cat Tiltrotator (TRS) integration

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 track shoes
  • 600 mm (24") triple grouser track shoes
  • 700 mm (28") triple grouser track shoes
  • 790 mm (31") tripler grouser track shoes
  • 800 mm (31") triple grouser track shoes
  • 3700 kg (8,160 lb) counterweight
  • 4200 kg (9,300 lb) counterweight
  • 4700 kg (10,400 lb) counterweight for SLR boom and stick

Compatible Technology and Services

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

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Cat Lift Assist is an excavator safety feature that quickly calculates the actual load you are lifting and compares it to the rated load the excavator is capable of handling. Visual and auditory alerts tell you if you are within safe working range or need to take action to avoid tipping.

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Cat® 2D E-fence keeps the front linkage within a predefined work area to avoid hazards like traffic. 2D E-fence uses data from position sensors to automatically stop motion when the front linkage reaches the defined boundaries.

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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.

Explore Technology

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

Explore Technology

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

Explore Technology

VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

Explore Technology
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Digging a foundation. Trenching for a water line. Working on a slope. These jobs demand the precision and speed you get from Cat® Grade technologies. Combining advanced guidance with optional automated machine control, Grade helps operators hit grading targets right on the money in fewer passes.

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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.

Explore Technology
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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.

Explore Technology

See how 320 compares against frequently compared products.

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Cat 320® Next Generation Excavator Delivers More for GP&H Constructions

Stick Steer for Cat® Excavators

Cat 320® Next Generation Excavator Delivers More for GP&H Constructions
Stick Steer for Cat® Excavators

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