The Link-Belt 145 X3 Spin Ace is a hydraulic excavator in the 14- to 15-ton class, designed for general excavation, utility work, site preparation, and material handling. It is part of Link-Belt's X3 series and features the Spin Ace upperstructure rotation system, which allows the cab and upper frame to rotate within the machine's working envelope for improved maneuverability in confined spaces. The 145 X3 Spin Ace is typically configured with a diesel engine, hydraulic controls, and multiple attachment options. It is used in construction, municipal, landscaping, and light demolition applications where compact swing capability is beneficial.