The Link-Belt 350 X4 is a hydraulic excavator in Link-Belt's X4 series, designed for general earthmoving, site development, utility work, and material handling. It is typically equipped with a diesel engine, hydraulic system, and operator cab configured for digging, trenching, loading, and grading applications. The 350 X4 is commonly used in construction and excavation projects that require a mid-size machine with balanced digging force, reach, and transportability. Standard features may include advanced hydraulic controls, fuel-efficient operation, and service access for routine maintenance. Specifications can vary by configuration, attachment, and market.