Contract work


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Thread rolling is the core expertise of Eichenberger Gewinde AG. Thread rolling (often also referred to as thread milling) is the cold forming of the surface of round workpieces. The thread form is produced by causing a radial dynamic force to be exerted between the two rotating rolling dies that form the workpiece. As the roll die profile penetrates the workpiece surface, the material in cold state is pressed all the way down into the root diameter of the thread roll die and is therefore rolled according to nominal value.

Advantages of thread rolling:

  • significant increase in hardness through cold forming
  • excellent surface smoothness on thread  flanks and in ground radius
  • reduced notch sensitivity
  • no interrupted swalfe as in machine-ground threads
  • excellent dimensional accuracy
  • rational manufacturing process
  • extremely cost-effective especially in large production batches

State-of-the-art production methods, extensive product expertise and access to more than 1000 machine tools, enable us to meet each and every demand for rolled threads – however exotic they may be:

  • Walzenlager Walzenlager
  • pitches up to 6 x diameter
  • spindle length up to 6 m
  • spindle diameter from 2 to 160 mm
  • high-helix thread profiles
  • ball screw thread profiles
  • all standard profiles (M, Tr, UNC, UNF, UNEF, Whitworth)
  • multiple start threads including left-hand/right-hand threads
  • special profiles
  • worm gears (quality and price advantages)
  • serrations and knurlings

Trapezoidal thread as per ground profile DIN 103

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  • Flat trapezoidal thread as per DIN 380
  • Multiple trapezoidal thread, incl. left/right

Ball screw profile

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As a rule, ogival threaded profiles are used.

Special threads with special profiles

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according to customer specifications

High-helix profiles

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  • multiple threads with pitch up to 6 x diameter
  • synthetic or brass nuts

Worm-gear profiles as per basic profile DIN 3976

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Single or multiple gears may be rolled.

Milled edges as per DIN 82

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  • concentric
  • left/right

Serrations as per DIN 5481

Threads on awkward parts

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Conical threads