Closed-die forgings

Closed-die forgings

GMH Gruppe supplies closed-die forgings that move whole industries. In the form, for example, of weight-optimised ball rods for lightweighting in automotive engineering or of safety-critical exterior clamping levers for ski lifts and other cableways.

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We produce closed-die forgings from 5 kg to 3.5 t by shaping steel of a grade optimally tailored to the application in ultra-precise forming tools (dies) in such a way that it meets the customer's requirements without even the slightest deviation. GMH Gruppe closed-die forgings are noted for their maximum individuality and dimensional accuracy.

Production process

We supply closed-die forgings with the very maximum of specification accuracy: from die block preparation, via die assembly, the die-welding shop, heat treatment and the forging process, up to and including machine finishing. Our products, forged on high-power machines such as counterblow hammers with ratings of 160, 320, 400 and 630 kNm, a screw press of 45 MN and an eccentric press of 31.5 MN, are also supplied ready-to-fit and ready assembled.


Together with our customers, we determine the absolutely optimum individual solution for each and every closed-die forgings - thanks, above all, to our in-house die and matrix shop, our facilities for simulation of the forming process, the supreme mastery of materials technology of our laboratory, in-house chip-removing machining, high levels of automation and - last but certainly not least - our highly experienced heat-treatment experts.

  • Heat-treatment options
  • Non-alloyed, high-alloy and ultra-high alloy steels
  • Max. 3.5 t in the die

Our supply range

Closed-die forgings, max. 4 m/3,5 t

Closed-die forgings are produced in lengths of up to four meters and weights of up to 3.5 tonnes. They include:

Piston/connecting rod blanks for large and small engines  Request quotation
Camshafts for high-capacity engines Request quotation
Base plates and chain links for the construction/earthmoving sector Request quotation
Exterior clamping levers for cableways employing three-cable technology Request quotation
Draw bars (ready-to-use components) for reactor pressure vessels  Request quotation
Crankshaft blanks Request quotation
Lower piston sections Request quotation
Components for pressure-vessel engineering Request quotation
Axles for rail vehicles Request quotation
Other components on request     Request quotation

Closed-die forgings, max. 1.250 mm ⌀/3,5 t

We produce closed-die forgings of up to 1250 mm in diameter and a maximum weight of 3.5 tonnes. These include:

Brake discs for the rail industry Request quotation
Rim rollers for mining vehicles, fully assembled Request quotation
Other components on request Request quotation

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Johannes Braun

Sales Director Closed Die Forgings