The Secret Behind the "Unloosable Nut"
The Shinkansen, a symbol of Japanese engineering excellence, relies on many crucial components to ensure safety and reliability. One of these key elements is the "unloosable nut." The Shinkansen, composed of 16 train cars, uses an astonishing 20,000 bolts. During its high-speed operations, the train is subjected to intense vibrations, which could lead to catastrophic accidents if even one nut were to loosen or detach.
Why Doesn’t It Loosen? The Advanced Technology of Hardlock Industry
Ensuring the safety of our journeys is the "unloosable nut" developed by Hardlock Industry Co., Ltd., a company based in Osaka. Despite being a small enterprise with around 90 employees, Hardlock Industry designs, manufactures, and sells these specialized nuts. Their products are not only used in Japan but also in countries like the UK, Poland, Australia, China, Taiwan, and South Korea.
The "Lock Nut" developed by Hardlock Industry is designed to maintain its clamping force even under uneven pressure, creating a structure that does not loosen. This breakthrough technology makes it possible to resist loosening even under intense vibrations.
Expanding from Japan to the World
The technology behind the "unloosable nut" is essential for railways, but its applications extend far beyond that. For instance, it has been incorporated into the structure of Tokyo Skytree, ensuring both safety and durability. This innovation demonstrates its value not only in railways but also in cultural landmarks and economic infrastructure.
In the future, the advanced technology of Hardlock Industry will continue to contribute to safe transportation not just in Japan but globally.
A Future Secured by Technology
The existence of the "unloosable nut" brings stability and safety to transportation, supporting people's journeys every day. This technology, capable of withstanding intense vibrations, is a remarkable symbol of Japan’s contribution to the world.
With gratitude for the engineering that ensures the safety of our travels, we look forward to seeing how it continues to shape the future of mobility.
