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Vent spacer

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Ventilation spacers for all energies

TDV Profile vent spacers are ubiquitous in the energy industry. The word energy comes from the Greek and means “force in action”, an expression that fits quite well with our laminated profiles used as spacers.

Energies are sometimes classified according to their source. We can talk about fossil fuels – derived from coal or oil, for example. We can also mention nuclear energy – which comes from nuclear reactions. Or renewable energies, which are naturally regenerated such as solar energy or wind energy.

In each of these sectors, TDV Profile is present with its rolled profiles used as ventilation spacers.


TDV Profile is the benchmark for ventilation spacers, made with special non-magnetic steels.

Non-magnetic ventilation spacers

Vent spacers for generators, turboalternators and engines

Since its origin, TDV Profile has worked with the world’s leading manufacturers of generators, turboalternators, engines, etc. They are the ones who transform these energies. We provide them with “I” shaped profiles. These are commonly referred to as “vent spacers”. They are placed between two elements to maintain a space allowing air to circulate. These profiles, in specific non-magnetic materials. In the strict sense, a non-magnetic material is a material without magnetic properties. However, such a material does not exist. In practice, we qualify as non-magnetic a material which is (virtually) neither attracted nor repelled by a magnet). These ventilation spacers take place in the rotors (rotating part of a motor or generator) and stators (static part of a motor or generator).

Vent spacers to compensate for thermal expansion

The energy industry also uses stainless steel spacers. They are designed to compensate for the thermal expansion of the collectors, in particular those of the rotors. They can prevent creep by acting as a reinforcement when assembling plastic/composite components.

Each type of motor or generator has its own ventilation spacers. Our strength lies in our ability to meet all vent spacer requests

Request for quotation laminate or profile to measure

Do you have a specific need for custom-made laminations or profiles? Do not hesitate to contact TDV Profile, we will meet your needs with rigour and professionalism.

From the profile to the ventilation spacer

Through the use of these spacers, TDV Profile is strengthening its global position by participating in the development of wind turbines, steam turbines, hydro-electric dams and nuclear power plants.

Our long experience in the manufacture of these profiles has made TDV Profile a key player in the ventilation spacer market and a valuable reference for all manufacturers.

TDV Profile works in total confidence with its customers located all over the world.

Our quality system, certified ISO 9001: 2015, guarantees our customers an organization authorized to meet the most demanding specifications, in all areas. This demand for quality, both in the field of rolling and in that of welding, allows us to maintain the flexibility and responsiveness that are ours, in order to jointly develop the markets of tomorrow.


Transparency and technical expertise

We provide our customers with our quality plans, our processes, inspection reports, material certificates, chemical and mechanical test reports… proof of our total transparency and our real technical expertise.

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