The Spin Ace minimum-swing radius excavators from Lexington, Ky.,-based Link-Belt are workhorses powered by dependable Isuzu engines. The Spin Ace (Circle 901) series includes the 75 model with an operating weight of 16,900 lb; the 80 model with an operating weight of 18,400 lb; the 135 model with an operating weight of 29,100 lb; and the 225 with an operating weight of 51,376 lb. The Spin Ace comes standard with a blade attachment and has an optional offset boom attachment for working on existing foundations or wherever space is limited.