The Link-Belt 145 X4 LC 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 features a long-carriage undercarriage for improved stability and a reduced tail swing design for operation in confined jobsite conditions. The X4 platform includes an electronically controlled engine, hydraulic system, and operator cab focused on fuel efficiency, control, and service access. The 145 X4 LC Spin Ace is commonly used in construction, roadwork, and municipal applications where compact swing radius and balanced digging performance are required.