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The wheel, together with the axle, is one of the most important parts to support the safety of railway vehicles. Today, the maximum speed of bullet trains can exceed 300 km/h. On the other hand, the acceleration and deceleration rates of metro or urban trains become greater than the existing rates. This makes service conditions of wheels more severe. Which is why the wheels must be absolutely reliable at all times.
SMI (Sumitomo Metal Industries, Ltd.) is unique manufacturer of railway wheels in Japan. The customers have trusted SMI's wheels for many years owing to their high reliability. At the same time SMI has been developing new technologies to give wheels superior performance and their greater dependability and durability are highly praised even by the customers around the world. To date, many SMI's wheels have been delivered to various countries throughout the world. |
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