The World´s First Gearless Mill Drive

The first gearless mill has recently been put into service in Le Havre, France. This is probably the world´s largest cement mill. The cement output is rated at 200 ton/h, and the motor rating is 8700 hp (7400 kW) at 15 r/min. For the first time in the history of tube mills the driving motor has been built directly on the mill, i. e., the mill drum is also the motor shaft.