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KUK Coils
About us
KUK Coils is a leading manufacturer of customer-specific winding goods and electronics. Thanks to our in-house development department and integrated machine and tool making, we are able to produce inductive components flexible, reliable and in highest quality for automotive, industry and medical & sensor sector.
From Appenzell (Switzerland), KUK Group has established seven global production sites since its foundation in 1990. With an innovative spirit, the production of customer-specific winding goods and electronics has been continuously improved. Today, over 1000 employees work every day to implement the high demands of our customers. Regardless of shape, dimension or series size: KUK is your optimal manufacturing partner for customer-specific coils, transformers and electronics!
https://www.kukcoils.com/
Products
Micro coil
The production of micro coils is one of KUK's specialities. We have established a great deal of know-how in handling windings directly onto magnetic cores - with a wide variety of wires that are invisible to the naked eye. Thanks to integrated plant and tool construction, KUK Group has the capabilities to process ultra-fine wire from 10 µm and to produce micro coils with diameters from 0.3 mm. For miniature coils with magnetic cores, cores made of a wide variety of materials are possible, including mu-metal, ferrite or amorphous materials.
Bobbin coils
Unlike air coils, bobbin coils, as the name already suggests, have a ferromagnetic body or coil former made of different material. The advantage of solenoid bobbin coils: higher inductances can be generated. Whether complicated to manufacture or adapted to special requirements - thanks to in-house winding lines, KUK produces the right bobbin coil for you. The bobbin coils are partly manufactured on standard coil formers. However, we mainly wind onto customer-specific coil formers. We wind bobbin coils from enamelled copper wire or alternative conductor material and thus achieve optimum results in customer-specific applications. We will be happy to advise you on the optimum core material for your solenoid bobbin coil. You can also benefit from our many years of cooperation with specialised suppliers.
Transformers
For many years, KUK Group has been a leading manufacturer of customer-specific transformers, chokes and transmitters - both for high frequency (HF) and low frequency (LF). We wind both standard and customer-specific bobbins. For many years, KUK Group has been the market leader in several countries in the field of custom made transformers and coils. Its in-depth knowledge of multidisciplinary winding and manufacturing make KUK a professional and dependable organisation in which the customer’s interests are of paramount importance. In close cooperation with the customer, we develop the best possible transformer or coil for the specific application. At the lowest possible costs. In addition, KUK is making more and more a name for itself as a supplier of sub-assemblies and a producer of medical transformer and distribution cabinets in hospitals, including installation and maintenance.
Air coil
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. 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.
Edgewise coils
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.
News
Which factors determine the choice of core material for micro coils?
When it comes to choosing the core material for your micro coil, it's essential to carefully evaluate the advantages and disadvantages while considering the specific requirements. So, what factors should you take into account?
Myths and facts on edgewise windings
While edgewise coils are gaining popularity among engineers for their optimal properties in specific applications, they are not necessarily the top choice compared to traditional round wire coils.