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Air coils

AIR COILS IN ALL SHAPES AND SIZES

KUK manufactures air coils for a wide variety of applications, e.g. RFID antennas, control coils or transponder coils. To produce self-supporting coils, self-bonding wire is also used, which is superficially bonded (glued) together during or after winding.

RANGE OF CUSTOMER-SPECIFIC AIR COILS

Micro coil (Air core)
Micro coil (Air core)
Air core coil cylindrical/rectangular
Air core coil cylindrical/rectangular
Air core coil odd-shaped
Air core coil odd-shaped

MANUFACTURING OF CUSTOMER-SPECIFIC AIR COILS AT KUK

Air coils are usually made of enamelled copper wire or high-frequency litz wire. So-called self-bonding wire is used to manufacture self-supporting air coils. It has an outer layer whose melting point is lower than the melting point of the insulation. After winding the air core coil, the turns of the coil are

Air coils are usually made of enamelled copper wire or high-frequency litz wire. So-called self-bonding wire is used to manufacture self-supporting air coils. It has an outer layer whose melting point is lower than the melting point of the insulation. After winding the air core coil, the turns of the coil are "baked" (glued) together by heating, usually by increased current flow.

Thanks to our in-house plant engineering, we can optimally align our production lines to your needs, even for air core coils.

  • Ultra-fine wires starting at 0.020 mm
  • Single-layer flat coils in cylindrical or rectangular shape
  • Single, bifilar or trifilar winding
  • Winding with HF litz wires
Orthocyclic windings allow the ‘densest possible stacking’ of turns. A transverse section of an orthocyclic coil would have a honeycomb shape. Orthocyclic coils are characterised by a high copper fill factor (often approx. 70%), so that a comparatively high magnetic field is realised in the smallest possible space.

ADVANTAGE OF ORTHOCYCLIC WOUND COILS

Orthocyclic windings allow the ‘densest possible stacking’ of turns. A transverse section of an orthocyclic coil would have a honeycomb shape. Orthocyclic coils are characterised by a high copper fill factor (often approx. 70%), so that a comparatively high magnetic field is realised in the smallest possible space.

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Edgewise winding is one of the modern trends in coil manufacturing. The principle of this winding technology is that the rectangular section wire is wound not on the flat part of the wire but on the short side of the wire. That’s what the terms edgewise winding or side-winding stands for.

EDGEWISE WINDING IN A NUTSHELL

Edgewise winding is one of the modern trends in coil manufacturing. The principle of this winding technology is that the rectangular section wire is wound not on the short side, but on the flat part of the wire. That’s what the terms edgewise winding or side-winding stands for.

Learn more
WHAT IS AN AIR COIL?

While the term "air coil" (or air coil coil) is common in the world of coil winding, many electronic component users might not be fully aware of their unique features and how they're made. This video provides an introduction to air coils, explaining their benefits, applications, and the manufacturing process.