Link-Belt 145 X3 Spin Ace is a hydraulic excavator in the Link-Belt X3 series, designed for general earthmoving, utility work, site preparation, and material handling. The machine combines a compact operating footprint with a mid-size excavator configuration, making it suitable for urban construction, roadwork, and confined job sites. Typical features include a diesel engine, hydraulic control system, enclosed cab, and compatibility with a range of buckets and attachments. The Spin Ace designation refers to the upperstructure rotation system used in Link-Belt excavators. The 145 X3 is commonly referenced in equipment listings, fleet inventories, and used machinery searches.