Toro will pay $700 million to acquire the Charles Machine Works and its well-known Ditch Witch brand, expanding into the underground utility market and helping to smooth out the seasonal aspects of the maintenance equipment business.
The Bloomington-based company will take on new debt to fund the all-cash transaction, which is expected to close this summer.
The deal is Toro's largest acquisition, beating its $227 million purchase in 2014 of the Boss line of professional snow equipment.
Toro shares rose nearly 3 percent on the news Friday, outpacing a strong rally in the broader market.
Privately held Charles Machine Works makes a wide range of products, from drills and ride trenchers to utility loaders for the underground pipe and cable market. The Oklahoma company had revenue of $725 million last year.
"The addition of Charles Machine Works will further strengthen our portfolio of market-leading brands supported by talented employees, a commitment to innovation, a best-in-class dealer network and long-standing customer relationships," Richard Olson, Toro's chief executive, said in a statement.
He said Charles Machine's navigation, 3-D imaging and other technology will be beneficial to all of Toro's manufacturing.
It will expand business in an adjacent category that fits well with Toro's specialty construction business.