The Link-Belt 210 X4 is a hydraulic excavator in the 21-ton class, designed for general earthmoving, utility work, site development, and material handling. It is part of Link-Belt's X4 series, which uses an electronically controlled engine and hydraulic system to support digging, lifting, trenching, and loading applications. The 210 X4 is typically configured with a standard boom, arm, and bucket setup, with options for auxiliary hydraulics and work tools. Common features include a spacious operator cab, integrated machine monitoring, and undercarriage components built for tracked operation on varied jobsite conditions.