Giuseppe Belluzzo designed a steam turbine locomotive with each wheel powered by its own turbine. Built in 1908 by Officine Meccaniche in Milan, the locomotive had two axles and thus four turbines connected in series. The steam first drove the turbine on the front right wheel and the exhaust steam was used to drive the turbine on the right rear wheel. This continued with the rear left and front left wheels before finally ending up in the smoke box.

The turbines turned at a much higher speed than the wheels. Different speeds could be achieved with the help of different gear wheels, while forward and reverse travel was made possible by double guide vanes. Although the prototype was in use until 1921, the drive form with several turbines did not catch on.

Although the FNM also operated an electrified suburban network around Milan, steam locomotives were needed for the more distant destinations. A tender locomotive was commissioned to speed up traffic, which should combine good acceleration with a maximum speed of 100 km/h. The order went to CEMSA, whose works in Saronno were located along the route of the FNM.

The four locomotives were apparently based on plans that came from Borsig. The 2-6-4T wheel arrangement was typical of modern passenger tank locomotives and combined good running characteristics with a large firebox and large supplies. The boiler delivered 1,060 hp permanently and 1,200 hp for short periods. The three cylinders, together with the 1,620 mm large coupled wheels, ensured good acceleration.

The locomotives were used to run direct connections from Milan to Como, Varese, Laveno, Erba and Asso. For some other routes, the axle load of 16.5 tonnes was too high. After the main routes had been electrified, these locomotives could not be used on the secondary routes. So they were retired in 1952 and scrapped shortly thereafter.