Simmons Machine Tool Corporation has spent a lot of time in Toronto recently, installing an underfloor wheel lathe for the Toronto Transit Commission. The Hegenscheidt U2000-400D Tandem Underfloor Wheel Lathe resides in the Wilson Carhouse and is the first tandem underfloor machine to support the maintenance of TTC\'s subway cars.
TTC\'s rapid transit rolling stock fleet has undergone significant changes in the past few years, particularly with the introduction of the Toronto Rocket subway cars. The vehicle\'s new design requires a wheel truing machine that can produce a finished wheel profile within the manufacturer’s tight tolerances. It also has to be highly productive so the vehicle can quickly return to supporting one of the largest commuter rail infrastructures in North America.