Raising the Bar for Efficiency and Fuel Economy. The Cat® 320 Medium Excavator will set the pace for productivity and profit on you work site.

The CAT 320 Delivers.

  • The Industry’s Highest Level of Standard Factory Technology
  • Lower Fuel Maintenance Costs
  • Simple Servicing. Less Downtime.
  • Unmatched Dealer Support

Designed for Operators.

Enjoy your choice of comfort cab options featuring generous spacing, wide seats with heated/cooled options, reduced cab vibration and automatic climate control. Get in and out of the cab easier using the tip-up left console (deluxe and premium cabs) and enjoy your work with Bluetooth® and USB connectivity as a standard with the radio.

Efficiency Through Technology.

Automatically stop excavator swing at your choice of set points with Swing Assist, while Boom Assist keeps you tracks on the ground when lifting and hard digging. After setting your bucket angle, Bucket Assist automatically maintains the angle in sloping, levelling, fine grading, and trenching applications.

The standard Cat PAYLOAD on-board weighing system allows you to:
• Weigh on-the-go and see real-time estimates of your payload without swinging.
• Track your daily productivity such as truck target weights and load/cycle counts.
• Perform calibration in minutes.
• Combine with VisionLink® and remotely manage your production targets.
• Download Payload data via USB so you can manage progress without an internet connection or VisionLink® subscription.

Less Effort. More Control.

Customise the 320 your way and get to work sooner with push button engine start, programmable joystick buttons which remember your individual set-up, programmable depth and slope offsets, and available work tool recognition where a simple shake of the tool confirms it's identity plus ensures attachment settings are correct.

Protect your hammer from overworking with Auto Hammer Stop, while Auto Dig Boost increases power by up to 8% for better bucket penetration, shorter cycle times, and greater payloads. The Cat PL161 Bluetooth attachment locator makes finding your attachments quick and easy. 


Net Power
128 kW
Operating Weight
22,800 kg
Maximum Digging Depth
6720 mm