Custom Springs

We are ready to take on any challenge!


From large springs to small springs, here we introduce our springs that never fail to live up to expectations.

Flat Springs

They are not just waves, they have various characteristics.
The precision needed requires delicate craftsmanship

Features Of Our Springs

Flat springs (leaf springs) are also called elliptical springs or cart springs, and all plate-shaped springs are basically classified as flat springs. Therefore, flat springs come in various different shapes, and so it is necessary to evaluate the stress consistently for each product in its design. Flat springs are also used for a wide range of applications, such as packing in high-temperature atmospheres and complicated structures such as wristwatches. At Tokai Spring we can support not only thin plates but also materials with a plate thickness of over 30 mm.

Complex shapes can be custom-made

We provide flat springs that satisfy the desired shape and load characteristics by drawing and materializing complicated shapes even from abstract illustrations. Also, for complicated shapes for which it is difficult to conduct durability evaluations, using FEM analysis has made conducting highly accurate durability evaluations possible

Key Points on Our Devotion to Handmade Springs

When you hear the name flat springs, you may think of springs with simple abilities to simply hold things down, but we can manufacture heat-resistant springs and corrosion-resistant springs that can withstand a variety of severe usage environments. By designing flat springs with a focus on functionality and supporting small-volume production, we also bring to life flat springs that clients truly seek.

  • We support design and production even for small lots of one or two springs
    In the spring industry, our “complete custom-made production & high-mix, low-volume manufacturing” is an extremely unique production system which has not changed since our founding.
    We guarantee to deliver the quantity you need, when you need it, at high quality.
  • We support all kinds of environments with the likes of heat resistance, corrosion resistance, and durability
    Springs are very sensitive to high and low temperatures and corrosive atmospheres such as rust. Tokai Spring conducts daily verification tests to properly maintain the performance of our springs in any environment such as at temperatures of 100°C or higher, -20°C or lower, as well as for applications in which our springs are exposed to seawater or industrial water!
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