Still "state of the art": AICHELIN roller hearth furnaces with the patented well flooding technology, currently in great demand. A proven and over the years optimized solution for the heat treatment of transmission and roller bearing parts.

The functional principle is shown very clearly in the linked animation, which was created during the development of the process.

Aichelin roller hearth furnaces are used for the economical heat treatment of components in the roller bearings industry, in the automotive industry (drive components, brake discs), but also for various semi-finished products. The Aichelin roller hearth furnace is the ideal furnace plant when it comes to the production of modern traction batteries (calcination of cathode powder; carbonization of anode material) for e-mobility.

For the heat treatment of roller bearings, we focus on preventing air from entering the furnace chamber, on maintaining high temperature and atmosphere uniformity as well as on a fast implementation in the hardening chamber (hardening in oil or salt bath; high-pressure gas quenching).

When it comes to the heat treatment of forged parts, our roller hearth furnaces under protective gas are excellent at preventing oxidation or scaling of your components. 

Aichelin is one of the leading manufacturers of roller hearth furnaces with vacuum vestibules at the furnace inlet and outlet. For your staff, this means additional safety and comfort (prevention of unpleasant smells and of the leakage of toxic fumes which may occur at furnace atmospheres under ammoniac or during calcination processes) and for your product, it means the prevention of uncontrolled entering of air into the furnace chamber.

Depending on the process and the capacity, we will design the optimal furnace concept and an efficient furnace size together.


  • Hardening in oil, salt, or with high-pressure gas quenching 
  • Bainitization with quenching in salt and conversion into salt or hot air
  • Hardening and tempering
  • Carbonitriding
  • Calcination
  • Carbonizing
  • Nitriding
  • Nitro-carbonitriding
  • Isothermal annealing
  • Normalizing
  • Soft annealing
  • Tempering
  • Stress relieving


  • Bearing rings for roller bearings
  • Rolling elements for roller bearings 
  • Cathode powder for traction batteries
  • Anode powder for traction batteries 
  • Automotive gearbox parts
  • Automotive engine parts
  • Automotive brake discs
  • Semi-finished products



Find more information in the Downloads folder or get in touch with us using the contact form.