The Caterpillar 320E is a hydraulic excavator in Caterpillar's 20-ton class, designed for general earthmoving, trenching, site preparation, and material handling. It is part of the Cat 320E series and is commonly used in construction, utility, and infrastructure applications. The machine features a diesel engine, hydraulic boom and stick system, and a tracked undercarriage for stability on uneven ground. Typical configurations may include a standard boom, various bucket options, and auxiliary hydraulic circuits for attachments. The Caterpillar 320E is recognized for its balance of digging performance, fuel efficiency, and operator control in medium-duty excavation work.