Bal Spring® canted coil springs for EMI shielding

Global demand for EMI/RFI shielding solutions is on the rise due to the need to prevent equipment failure in end-use products in aerospace, defense, automotive and many other industries. Shielding from such interference is vital to preventing damage to critical systems and components. Bal Spring® canted coil springs have been tested and proven to be effective shielding elements in the packaging of electronic enclosures. As a shielding component, these springs offer a simple, economical design that greatly contributes to the reduction of radiated and conducted interference. Bal Spring® canted coil springs offer the additional benefits afforded by their canted coil design, including outstanding durability and reliability. Bal Spring® canted coil springs are available in a variety of sizes and configurations:

  • Cross sections from 0.041 to 0.494 in. (1,04 to 12,55 mm)
  • Ring diameters from 0.062 in. (1,57 mm)
  • Base materials include various copper alloys and stainless steel alloys
  • Platings with several metals are available
  • Forms include continuous lengths, cut lengths, and closed rings

We have performed extensive design and testing to create groove configurations that optimize the shielding performance of its springs. These groove configurations are readily adaptable to many hardware applications. Our testing has been validated by an independent laboratory.

Typical EMI shielding applications for our springs include antenna bases, cables, electronics housings, aerospace, defense and automotive equipment. Our canted coil spring solutions meet OEM requirements for EMI shielding, and they can be customized to provide specific levels of immunity and susceptibility protection.


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