1. Overview

The Cat 320 is a 20-ton class medium hydraulic excavator designed for construction, roadbuilding, quarrying, and general earthmoving applications. As Caterpillar's best-selling model in the 20-ton segment, the Next Generation 320 sets new benchmarks in fuel efficiency, operator comfort, and integrated technology. With standard Cat Grade technology and Payload systems, this machine helps operators move more material per hour with less fuel.

2. Key Features

• Fuel efficient – Lower engine speed combined with a larger hydraulic pump reduces fuel consumption by up to 10% compared to previous models

• Powerful engine – Cat C4.4 engine, 128.5 kW (172 hp), meets China Stage V / EU Stage V emission standards

• Standard Cat Grade with 2D – Includes display and laser capability for precise grading without additional sensors

• Cat Payload standard – On-the-go weighing helps achieve precise load targets and avoids over/under loading

• Auto hydraulic warm-up – Extends component life by reaching optimal operating temperature faster

• Low maintenance costs – Extended service intervals reduce maintenance costs by up to 10%

• Spacious ROPS cab – ISO-certified rollover protection structure, large screen, and premium comfort features

• Remote capabilities – Remote troubleshooting and remote flash allow dealer support without on-site visits

3. Specifications

4. Applications

5. Model Configuration Comparison

Sources:

6. Buying Guide

Select based on your application and budget:

Key purchasing considerations:

1. Confirm local emission requirements – Stage V / China Stage IV / Tier 4 Final

2. Choose bucket type – General purpose / heavy duty rock / ditch cleaning / demolition

3. Check warranty options – Extended coverage available in some markets

4. Verify dealer support – Parts availability and service network in your area

5. Ask about technology activation – Some features require software licenses

New vs. Used:

• New machine – Full warranty, latest technology, lower operating costs

• Cat Certified Used – Less than 7 years / 7,500 hours, 140-point inspection, 6-month/1,000-hour powertrain warranty

7. Delivery & Service