Caterpillar 320C Used Excavator Overview

The Caterpillar 320C is a well-known 21.1-ton medium hydraulic excavator built for bulk earthmoving, foundation works, road construction and quarry loading. Well-known for its original Cat 3066 ATAAC engine, mature load-sensing hydraulic system and solid long-track chassis, the 320C remains one of the most popular used excavators among global contractors.

Key Features:

Proven Power Unit The excavator is equipped with the Cat 3066 ATAAC six-cylinder turbo diesel engine, delivering 110 kW (148 HP) net power at 1800 rpm. This reliable factory engine provides strong low-speed torque, stable output under continuous medium-heavy loads and good fuel economy for long-hour site operations. Mechanical fuel injection design is tolerant of poor-quality fuel, spare parts are widely available globally.

Stable Heavy-Duty Build With an operating weight of approximately 21,115 kg, the 320C adopts LC long undercarriage design. Extended track frame increases ground contact area, offering excellent stability on soft and uneven ground. Reinforced boom, stick and X-frame structure resist heavy digging impact and extend service life.

Versatile Digging & Loading Performance Bucket capacity ranges from 0.8 to 1.0 m³ and maximum digging depth reaches 6,720 mm. The machine efficiently completes foundation excavation, mass earthmoving, backfilling and stockpile loading. Auxiliary hydraulic lines support quick installation of hydraulic breakers for multi-purpose construction tasks.

Efficient Hydraulic System Caterpillar’s advanced load-sensing hydraulic system delivers smooth and precise joystick control. Pressure compensation technology enables coordinated multi-function movements and fast cycle times, improving productivity during repeated digging, slewing and dumping operations. Stable hydraulic performance sustains long-time continuous operation.

Serviceable & Operator-Centric Design Ground-level service access points simplify daily inspection and routine maintenance to minimize downtime. The spacious operator cab provides good all-around visibility and ergonomic controls, lowering operator fatigue during long working shifts in various construction environments.

Applications:

The Caterpillar 320C Used Excavator is ideal for a range of applications, including:

• General Building Construction: Foundation excavation, site clearing and bulk earthworks.
• Road & Municipal Works: Trenching, slope shaping, backfilling and pipeline installation.
• Land Development: Land grading, embankment construction and pond excavation.
• Quarry & Aggregate Handling: Rock loading, overburden removal and stockpile management.

Conclusion:

The Caterpillar 320C Used Excavator stands out for its trusted Cat powertrain, durable long undercarriage and stable load-sensing hydraulic technology. It is a robust workhorse for medium and heavy-duty earthmoving projects. Widely traded in the global used machinery market, the 320C combines dependable performance and easy spare parts supply, making it a preferred option for contractors looking for a reliable 21.1-ton used excavator.