High-Productivity Caterpillar 320 excavator | Elite 22-Ton Performer

Discover the Caterpillar 320 excavator, a 22-ton machine delivering unrivaled efficiency and unstoppable performance. Learn about its 118 kW power, integrated technology, and how it reduces costs by up to 20%.

Overview

The Caterpillar 320 excavator stands as one of the most technologically advanced and fuel-efficient machines in the 22-ton class. Powered by the reliable Cat C7.1 engine, it delivers 118 kW (158 hp) of net power at 1,800 rpm, meeting global emission standards while offering exceptional operational stability.

With an operating weight of 22,400 kg, the 320 combines a robust undercarriage, a heavy-duty boom and stick, and an intelligent hydraulic system. The excavator’s maximum implement flow reaches 429 L/min, while hydraulic pressures are optimized to 35,000 kPa—and up to 38,000 kPa in Heavy Lift Mode for enhanced lifting force. A precise combination of lower engine speed and a large hydraulic pump delivers top performance while burning up to 20% less fuel than previous models.

Engineered as part of CAT’s Next Generation Excavator lineup, the Caterpillar 320 excavator emphasizes low fuel consumption, high operator efficiency, and significantly reduced maintenance requirements, making it a long-term, cost-effective investment for contractors.

Applications

• Urban Construction & Restricted Job Sites

Reliability and precision are non-negotiable for public works. The Caterpillar 320 excavator’s compact tail swing radius of 2,830 mm and optimized machine width of 2,980 mm (with 600 mm shoes) enable smooth maneuvering on urban sites. Its standard CAT Grade with 2D system helps operators dig precisely to spec without overcutting, improving accuracy around buried utilities and structural foundations.

• Medium-Duty Earthmoving & Foundation Excavation

With a maximum digging depth of 6,720 mm, a ground reach of 9,860 mm, and powerful digging forces (bucket: 150 kN, stick: 106 kN), the 320 performs exceptionally in trenching, basement excavation, and foundation preparation. The large 1.19 m³ bucket increases cycle productivity for soil, gravel, and aggregates.

• Road Building & Public Infrastructure

For long-duration road or utility projects, the Caterpillar 320 excavator excels due to its fuel efficiency. Compared with the 320D2, the 320 reduces fuel burn by up to 20%, delivering substantial yearly savings. Its onboard Product Link™ and VisionLink® telematics help managers track fuel use, idle time, hours, and maintenance needs in real time.

• Fleet Owners Focused on Total Cost of Ownership

Routine service is simpler and faster with the 320. Key components, like the high-capacity hydraulic filter and the fuel filter, now have synchronized maintenance schedules. These filters can be changed only every 1,000 hours, significantly cutting down service downtime. Consolidated filter placement and ground-level access further minimize downtime, benefiting contractors who prioritize predictable costs and high uptime.

Why Choose the Caterpillar 320 Excavator

• Exceptional Fuel Efficiency: The Caterpillar 320 excavator is engineered to reduce fuel consumption by up to 20% through Smart Mode, which automatically adjusts engine speed and hydraulic flow to match load demands. Operators maintaining 1,000 operating hours annually can save up to 700 gallons of fuel compared to the 320D2. Cat Grade with 2D, Grade with Assist, and Cat Payload come standard, boosting operator efficiency by up to 45%. This suite of technologies ensures accurate digging and loading from the very first pass.

• Proven Engine Reliability: Rest assured with the Cat C7.1 engine, proven to meet stringent emission standards equivalent to U.S. EPA Tier 3 and EU Stage IIIA. Its design ensures reliable operation in diverse environments, with a high-ambient cooling capacity of 52° C. With automatic engine idle shutdown, three selectable power modes, and cold-start capability down to -18° C, the engine delivers consistent productivity and reduced wear.

• Superior Stability & Structural Strength: Built for continuous, heavy work, the Caterpillar 320 excavator features a robust structure. Featuring a heavy-duty 5.7 m boom, 2.9 m stick, and counterweight options up to 4,700 kg, the 320 maintains strong structural balance. The 82 kN∙m swing torque ensures fast rotation under heavy load, and the reinforced frame improves long-term durability in demanding environments. Ground-level maintenance access makes routine checks safer and faster.

• Operator-Centric Comfort: A comfortable cab leads to a more productive day. The ISO-certified ROPS cab is sound-suppressed and sealed, featuring automatic climate control. The standard high-resolution touchscreen monitor is easy to reach and navigate, while viscous mounts reduce cab vibration. The ergonomic joystick controls, Stick Steer feature, and customizable settings ensure reduced fatigue and a highly intuitive operating experience.

Engineered Insights

The Caterpillar 320 excavator is engineered to deliver maximum usable power at lower RPMs. The combination of the C7.1 engine and high-efficiency hydraulic pump allows smoother multi-function operation – especially when loading, lifting, and swinging simultaneously.

Heavy Lift Mode raises system pressure to 38,000 kPa, giving operators confidence when handling large pipes or dense materials. The optimized undercarriage and counterweight geometry ensure machine stability during demanding operations.

Furthermore, CAT’s electronic systems – such as Auto Dig Boost and Auto Heavy Lift – intelligently provide extra hydraulic force exactly when needed, maximizing productivity without unnecessary fuel burn.

Related Models for Comparison

• Caterpillar 320 GC: A cost-optimized variant ideal for light-to-medium applications, focusing on lower fuel burn and reduced operational complexity.

• Caterpillar 323: A higher-output model offering more power and hydraulic performance for heavy production jobs in large construction and infrastructure projects.