Customized Ferrites / Ferrite machining

Are you looking for a matching air gap or AL-value for your Ferrite or toroidal core or a customized special ferrite core?
We are machining ferrite cores according to your requirements or design and manufacture totally new shapes and sizes.

Quality

Today's electronics applications always require high quality in all areas. This quality must be based on reliable components.

Extensive program

We offer an extensive range of high-quality and reliable ferrite components.

Many years of experience

With almost 40 years of experience, we supply customers from a wide range of industries worldwide.

Ferrite materials

We offer our extensive range of ferrite cores in the materials BFM8 and BFM9 as well as in the high-permeability materials BFM2k, BFM3k, BFM6k BFM10k and BFM11k.

Passion for Passives - Blinzinger Elektronik GmbH

Customized Ferrites / Air gaps / Special Ferrites / Ferrite machining / Measuring Ferrites

Are you looking for a matching air gap or AL-value for your Ferrite or toroidal core or a customized special ferrite core?

We are machining ferrite cores according to your requirements or design and manufacture totally new shapes and sizes.

Blinzinger – your reliable partner in ferrite cores.

Our company has been working with and matching ferrite cores to customers’ specifications and requirements for almost 40 years. We are a reliable supplier for our customers and fulfil assigned tasks fast and flexible. We can modify virtually any shape of core.

Manufacturing of new shapes and sizes, ferrite machining, ferrite reworking, ferrite cores with air gap, mechanical air gap or according to AL-value, air gap altering, special ferrites, electrical measuring of ferrites, bonding ferrites, separating ferrites (segmenting toroidal cores), Slotting toroidal cores and a lot more in relation to ferrite cores

Customized Ferrites / Air gaps / Special Ferrites / Ferrite machining / Measuring Ferrites
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Customized designs and sizes

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Engraving ferrite cores (e.g. for samples or small series, we create tools for large series)
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Ferrite machining
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Air gap (mechanical or according to AL value)

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Distributed air gap

Ferrite machining – our possibilities

Air gaps

  • Inserting high-precision air gaps (grinding air gap) to mechanical dimensions (minimum tolerances) or AL-value
  • Measuring/testing of ferrite cores according to different parameters: with our vast variety of measuring instruments (like LCR meter (4284A), Power Loss Tester (Blinzinger BVM20), Power Choke Test unit and climatic chamber) measurements can be performed in a wide frequency band or voltage range respectively and under operating on-load conditions.
  • Special air gap / Inserting of high-precision air gaps in form of steps, pitches, slants, caps, slots etc. to influence the modulation
  • Separating toroidal core transformers, segmenting toroidal core transformers (complete separation of toroidal cores)
  • Toroidal core with air gap, slotting toroidal cores with high-precision gaps, e.g. for Hall sensors, (toroidal core with slot or slotted toroidal core to alter the AL-value)
  • Toroidal core with air gap – Slotted toroidal core with extremely precise gaps, e.g. for Hall sensors (toroidal core with slot or toroidal core slotted to change the AL value)
  • Air gaps in pot cores (p-cores)
  • Drilling ferrite cores – drilling of ferrite cores to make drill hole spacing’s or opening existing drill-holes with minute deviations (centred) e.g. axis for rotary signal transmitter, enlarging of the central hole of RM-cores or insertion of openings to encapsulate windings

More possibilities around ferrite cores

  • Determine AL-value / calculate AL-value
  • Determine air gap /calculate air gap
  • Determine power loss (power loss measuring according to IEC 620-44-3 with the Blinzinger Power Loss Test unit BVM20)
  • Manufacturing of customized new core shapes or sizes (e. g. for evaluation testing or pre-production sample)
  • Reworking ferrites
  • Separating ferrites, parting ferrites
  • Separating rod ferrites, extending ferrite round bars
  • Enlarging coil windows, inserting grooves or openings for cable bushings
  • Large ferrite cores – manufacturing very large ferrite cores, e. g., for high-voltage transformers, power transformers, storage chokes
  • Manufacturing very large ferrite cores, e. g., for high-voltage transformers, power transformers, storage chokes
  • Bonding ferrites using adhesives especially suitable for this purpose
  • Printing the cores with the data you need (such as AL-value, air gap, date of manufacture, etc.)
  • Manufacturing of winding goods (measurement coils) for customized calibration of the ferrite cores
  • Following customer request, items can be despatched in ESD packaging (trays or blister)
  • Following customer request, quality control of the ferrite cores with digital microscope, e. g. for aerospace technology

And of course we also machine ferrite cores that you supply to us.

High quality ferrite components in small or large quantities at an interesting price.

If you have demanding technical requirements, and need precision and quality, then you have found the right partner in BLINZINGER ELEKTRONIK.

New shapes / Special ferrites / Custom-build ferrite shapes

However, we have not only specialized in the simple incorporation of air gaps or reworking of standard cores using our ferrite machining capabilities, but can also offer completely new ferrite core designs or familiar shapes but with new dimensions.
We design these cores and produce them directly from the press tool – without the need for time-consuming machining of standard ferrites.
We manufacture the ferrite cores according to our customers’ requirements – in small quantities or in quantities of several million.

Our strengths are above all:

  • Customised developments and special products
  • Full consultation service
  • High quality standard
  • Short delivery time
  • Favourable prices

Applications for these ferrite cores include everything from micro components for the telecommunication and automobile industries to very large components, for example, for machine building or medical engineering.

Some examples ferrite cores

Air gaps, mechanical or according to AL-Value.

By adding air gaps in the middle leg of a core, we can adjust the electrical characteristic of a ferrite core. The inductance can be influenced by even small changes in the air gap. We are therefor equipped with hig-precision machines that enable us to achieve inductance toleances of less than 1%.

But not only the depth of the gap, but also its shape can be important. However, changing the shape of the gap, for example through steps or slopes, can change not only the inductance, but also when the core goes into saturation.

Profile and contour processing – chamfers and roundings

Chamfers and curves avoid sharp edges on a ferrite core. Profile and contour machining is suitable for avoiding problems with insulation of wires that are wound directly onto the core. They reduce the risk of wires being damaged during processing.

Processing holes or openings into cores

With our equipment and special tools, we are able to drill holes in ferrite cores. These openings can be drilled to the desired size and are suitable for assembly and especially for routing cables.

Glue ferrite cores

Some custom ferrite components cannot be manufactured from a single block. In such cases, bonding ferrites represents a way to achieve the dimensions required by the customer for their application. We always use 2-component adhesives to bond ferrite cores, which offer high stability.

Mark ferrite cores / print ferrite cores

We use the pad printing method to mark our ferrite cores upon customer request.
Even on small components, we can apply product identification such as manufacturer name, article name, article number, date of manufacture as well as information about the ferrite material, the AL value and other data requested by the customer to our cores.