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A variety of railcars including bullet trains, conventional railroad lines, subways and trams operate on Japanese railways. The total distance travelled is about 30,000 km, and it is estimated that 300 million people use the system annually. People use the railway system for a variety of reasons, including commuting to work and school, sightseeing and business trips. The railroad is the main artery that supports the movement of people, and its infrastructure is indispensable to Japanese society.
Within the railway system, there are many devices and facilities that require power, such as railcars, operation control centers and station platforms, all of which support the critical safety and well-established punctuality of the Japanese railroad. A large number of linear motion rolling guides are used according to the component and application (main motors, drive units, axles, etc.), playing an important role in the operation of the railways.
Railways
Plug Door
Plug doors are widely used on many modes of transportation, including bullet trains, trams, and highway buses. The door and the side of the train body are adjusted to the same height when the door is closed, reducing the air resistance and noise and preventing snow from adhering. It also provides a nice appearance. Since moment is applied to the door guiding parts when it slides open or closed, linear motion rolling guides with excellent moment resistance are used for the sliding part of the door.
Platform Door
Platform doors are safety fences installed on station platforms to prevent accidents from occurring, such as passengers falling onto the tracks or making physical contact with the trains. By 2020 in Japan, there are plans to have platform doors installed at all stations that serve more than 100,000 people a day, a rapid adoption of this safety measure. Linear motion rolling guides used for opening and closing the guiding parts of the platform doors need to be compact and storable, and require load capacity and durability sufficient to withstand the wind pressure caused by passing trains and the shock load from passengers.
