320 - Tier 3

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 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.

Benefits

Up To 20% Less Fuel Consumption

A precise combination of lower engine speed and a large hydraulic pump delivers top performance while burning less fuel.

Up To 25% Lower Maintenance Costs

With extended and more synchronized maintenance intervals, you get more done at a lower cost compared to the previous model.

Up To 45% More Operating Efficiency

Offering the industry’s highest level of standard factory-equipped technology, including Cat Grade with 2D, Grade with Assist and Payload.

Product Specifications for 320 - Tier 3

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.
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 ft·lbf 82 kN·m
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.
Fuel Tank Capacity 86.6 gal (US) 345 l
Cooling System 6.6 gal (US) 25 l
Engine Oil 6.6 gal (US) 25 l
Swing Drive - Each 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
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

320 - Tier 3 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
  • 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

320 - Tier 3 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

  • 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

Compatible Technology and Services

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

  • 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.

  • Cat Lift Assist for Excavators

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

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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.

Explore Technology

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

Explore Technology
  • Cat Command for Excavating

    Cat Command for Excavating is a remote control option that contributes to jobsite safety by allowing operators to run an excavator remotely in hazardous applications.

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Cat Command for Excavating is a remote control option that contributes to jobsite safety by allowing operators to run an excavator remotely in hazardous applications.

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  • Cat 2D E-fence for Excavators

    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.

  • People Detection for Excavators

    While machines are designed to maximize operator visibility, it can be challenging to constantly monitor what is going on around them. Cat® Detect - People Detection for excavators is an intelligent vision camera system that can alert an operator when someone enters within a machine’s hazard zone.

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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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While machines are designed to maximize operator visibility, it can be challenging to constantly monitor what is going on around them. Cat® Detect - People Detection for excavators is an intelligent vision camera system that can alert an operator when someone enters within a machine’s hazard zone.

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  • Cat Inspect

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

  • Cat PL161 Attachment Tracker

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

  • Cat Product Link

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

  • Cat Remote Flash

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

  • Cat Remote Troubleshooting

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

  • VisionLink®

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

1 - 8 of 9 Items items
Previous Next

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

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

Explore Technology

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

Explore Technology

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

Explore Technology

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

Explore Technology

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

Explore Technology
  • Cat Grade with 2D for Excavators

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

  • Cat Grade with 3D for Excavators

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

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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.

Explore Technology

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

Explore Technology
  • Cat Payload for Excavators

    Next generation excavators take on all kinds of tasks - loading, stockpiling, material handling, and more. Cat® Payload technology provides on-the-go weighing to help operators hit exact targets every time and avoid overloading, underloading, or misloading materials.

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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
  • VisionLink® Productivity

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

1 - 8 of 9 Items items
Previous Next

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

Explore Technology

See how 320 - Tier 3 compares against frequently compared products.

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320 Family Introduction Video

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

Stick Steer for Cat® Excavators

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

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