The Caterpillar 390F is a large hydraulic excavator in Caterpillar's F Series lineup, designed for heavy-duty earthmoving, mass excavation, and quarry applications. It is typically equipped with a high-capacity bucket, reinforced boom and stick options, and a fuel-efficient diesel engine matched to demanding production work. The 390F is used in mining support, large-scale site development, and material handling where reach, digging force, and durability are important. Common features include advanced hydraulic control, operator cab comfort, service access, and compatibility with multiple work tools. The model is recognized for high productivity in large excavator applications.