Cat 320 Excavator, Specs, price, Overview, Weight, Oil Capacity, Problems, Attachments & Review

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All the details which you want to know about  Cat 320 excavator you can find in this article which is updated.

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 Cat 320 Excavator Price

Cat 320 Excavator

Cat 320 Excavator New Original Price: $230,000 to $270,000

Cat 320 Excavator Key Facts

  • Engine: Cat C4.4E TTA engine
  • Oil Capacity: 6.1 gallons
  • Weight: 4.2 mt (9,300 lb) 
  • Net power: 172 HP 128.5 kW
  • Fuel consumption: 11-13 liters per hour
  • Lifting capacity:4.2 mt (9,300 lb)
  • Width: Transport Width 9.8 ft 2980 mm
  • Bucket capacity:1.22 yd3

Cat 320 Excavator Specification

Working Ranges – Reach Boom – 5.7 m (18’8″); R2.9 (9’6″) Stick

Bucket Digging Force (ISO) 10.1 ft
Stick Digging Force (SAE) 12 ft
Maximum Cutting Height 30.7 ft
Maximum Depth Cut for 2440 mm (8’0″) Level Bottom 21.5 ft
Maximum Digging Depth 22 ft
Maximum Loading Height 21.3 ft
Maximum Reach – Ground Level 32.3 ft
Maximum Vertical Wall Digging Depth 17 ft
Minimum Loading Height 7.1 ft


Net Flywheel Power 162 HP
Bore 4 in
Stroke 5 in
Displacement 269 in³
Gross Power – SAE J1995 164 HP
Net Power – SAE J1349 162 HP
Engine RPM – Operation 1650 r/min
Engine RPM – Travel 1800 r/min


Operating Weight – North America 49600 lb
Operating Weight – Europe/Australia & New Zealand 48300 lb

Service Refill Capacities

Fuel Tank Capacity 86.6 gal (US)
Cooling System 6.6 gal (US)
Engine Oil 4 gal (US)
Final Drive – Each 1.3 gal (US)
Hydraulic System – Including Tank 61.8 gal (US)
Hydraulic Tank 30.4 gal (US)
DEF Tank 10.3 gal (US)
Swing Drive – Each 1.3 gal (US)


Maximum Swing Torque 54440 ft·lbf
Swing Speed 11.25 r/min


Maximum Drawbar Pull 46311 lbf
Maximum Travel Speed 3.5 mile/h

Hydraulic System

Main System – Maximum Flow – Total 113 gal/min
Maximum Pressure – Equipment – Normal 5075 psi
Maximum Pressure – Swing 3886 psi
Maximum Pressure – Travel 4974 psi

Dimensions – Reach Boom – 5.7 m (18’8″); R2.9 (9’6″) Stick

Counterweight Clearance 3.4 ft
Shipping Height 9.7 ft
Shipping Length 31.3 ft
Track Gauge 7.8 ft
Track Length 12 ft
Transport Width – 600 mm (24 in) Shoes 9.8 ft
Transport Width – 790 mm (31 in) Shoes 10.4 ft

Dimensions – Reach Boom – 5.7 m (18’8″); R2.9 (9’6″) Stick

Ground Clearance 1.5 ft
Tail Swing Radius 9.3 ft

Cat 320 Excavator Key Features

  • Safely Home Every Day
  • Performance with Less Fuel
  • Efficiency Through Technology
  • Designed for Operators
  • Reliability You Can Count on
  • Simple to Operate
  • Save on Service and Maintenance

 Cat 320 Excavator Overview

The Cat® 320 GC excavator balances productivity with easy-to-use technology features, a new comfortable cab, reduced fuel consumption by up to 20%, and longer maintenance intervals reducing maintenance costs by up to 20% to bring you a durable, low-cost-per-hour excavator for light- to medium-duty applications.

Up To 25% More Fuel Efficient. 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.

Improved Reliability and Efficiency. An advanced electro-hydraulic system provides the optimum balance of power and efficiency while giving you the control you need for precise digging requirements.

Cat 320 Excavator Attachment


The bucket is the standard attachment that comes with the excavator. Soil, gravel, and boulders are just some of the items that may be dug, loaded, and moved with its help.

Hydraulic Thumb

A hydraulic thumb is an attachment that provides additional grip and control for handling objects like logs, pipes, or debris. It allows the operator to easily pick up and manipulate items.


A ripper attachment is used for breaking up hard surfaces, such as asphalt or frozen ground. It consists of a single shank with a tooth or blade that penetrates and loosens the material.


A grapple attachment is useful for handling bulkier materials, such as logs, branches, or demolition debris. It consists of a set of jaws that can be opened and closed hydraulically, allowing for secure gripping and lifting.


An auger attachment is used for drilling holes in the ground. It is commonly used for tasks like fence post installation or soil sampling. The auger is driven by the excavator’s hydraulic system.

Hydraulic Hammer/Breaker

A hydraulic hammer or breaker attachment is designed for breaking through hard materials like concrete or rock. It delivers powerful percussive blows to break the material into smaller pieces.

Cat 320 Excavator Problems

Problem: Hydraulic fluid leaks can occur due to damaged hoses, seals, or fittings, leading to decreased performance and potential safety hazards.

Solution: Inspect the hydraulic system for leaks and replace any damaged components. Tighten loose fittings and ensure proper sealing. Regularly check hydraulic fluid levels and replenish as needed.

Problem: Clogged radiators, broken fans, or insufficient coolant can all lead to the engine or hydraulic system overheating.

Solution: Clean the radiator and cooling fins to remove debris and dust. Ensure the cooling fan is functioning properly. Check coolant levels and top up if necessary. If the issue persists, consult a professional for further diagnosis.

Problem: Electrical problems can manifest as faulty lights, non-functional gauges, or intermittent power loss.

Solution: Inspect the wiring harness for loose connections, damaged wires, or corroded terminals. Replace any damaged components. Replace any blown fuses you find.Get an electrician or technician’s opinion if you think there could be an issue with your electrical system.

Problem: Incorrect track tension can result in reduced traction, premature wear, or track derailment.

Solution: Follow the manufacturer’s guidelines to adjust the track tension properly. Ensure the tension is within the recommended specifications for smooth operation. Regularly inspect the undercarriage components for wear and replace as necessary.

Problem: Difficulty starting the engine or failure to start altogether.

Solution: Check the battery for proper charge and clean the terminals. Ensure the fuel tank has an adequate supply of clean fuel. Check the fuel filters and replace if clogged. Verify that the engine is receiving fuel and spark. If needed, consult a qualified technician for further troubleshooting.

Problem: Unusual noises such as knocking or grinding coming from the hydraulic system.

Solution: Inspect hydraulic lines, cylinders, and valves for damage or wear. Tighten loose connections and replace damaged components. Flush and replace hydraulic fluid if necessary. If the noise persists, consult a professional for further diagnosis.

Cat 320 Excavator Review

The Cat 320 excavator is a widely favored medium-sized excavator appreciated for its robustness, dependability, and strong performance. It is driven by a 108-horsepower Caterpillar C4.4 turbocharged diesel engine and features a four-wheel drive system with a locking rear differential, ensuring optimal performance.

The 320 model also includes a hydraulic three-point hitch and a mid-PTO, making it compatible with a diverse array of attachments, increasing its versatility.

For more details check out the YouTube video


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Cat 320 Excavator FAQ

What are the key specifications of the Cat 320 Excavator?

The Cat 320 Excavator typically features an operating weight of around 22 to 24 metric tons, engine power ranging from 121 kW to 128 kW, and a maximum digging depth of approximately 6.9 meters.

What are the primary applications of the Cat 320 Excavator?

The Cat 320 Excavator is commonly used for tasks such as digging, trenching, loading, material handling, and general construction activities.

What type of engine powers the Cat 320 Excavator?

The Cat 320 Excavator is equipped with a Caterpillar C4.4 ACERT engine, which is known for its reliability, power, and fuel efficiency.

Does the Cat 320 Excavator have any advanced safety features?

Yes, the Cat 320 Excavator often incorporates safety features such as ROPS (Roll-Over Protective Structure), FOPS (Falling Object Protective Structure), and various monitoring systems to enhance operator safety on the job site.

What is the fuel consumption of the Cat 320 Excavator?

The fuel consumption of the Cat 320 Excavator can vary depending on factors such as operating conditions, load, and attachments used. On average, it consumes around 8-12 liters per hour.

Can the Cat 320 Excavator be equipped with different attachments?

Yes, the Cat 320 Excavator is compatible with a range of attachments including buckets, hydraulic thumbs, rippers, grapples, augers, and hydraulic hammers, among others.

How often should I perform maintenance on the Cat 320 Excavator?

Regular maintenance intervals for the Cat 320 Excavator are typically based on operating hours and may vary. It’s recommended to refer to the manufacturer’s guidelines and schedule maintenance accordingly.

What are some common maintenance tasks for the Cat 320 Excavator?

Routine maintenance tasks include checking fluid levels, inspecting and replacing filters, lubricating moving parts, inspecting tracks and undercarriage, and addressing any issues indicated by the onboard monitoring systems.

Can the Cat 320 Excavator be operated in various weather conditions?

The Cat 320 Excavator can work in a variety of climates, including those that are particularly cold, hot, or humid. However, extreme weather conditions may require additional precautions and maintenance.

How long is the warranty period for the Cat 320 Excavator?

The warranty period for the Cat 320 Excavator may vary depending on the region and the specific terms provided by the dealer or manufacturer. It’s advisable to consult with the dealer or refer to the warranty documentation for accurate information.

Can the Cat 320 Excavator be equipped with GPS or telematics systems?

Yes, the Cat 320 Excavator can be equipped with optional GPS or telematics systems, which provide features like machine tracking, remote monitoring, and fleet management capabilities.

What are some factors to consider when choosing the Cat 320 Excavator for a specific job?

Factors to consider include the required digging depth, reach, lifting capacity, the type of materials to be handled, available attachments, and the specific conditions of the job site.

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