1780 – foundation of Gebr. Tiefenthal, Wülfrath
2003 – Renaming to GMAK Kaltformteile GmbH & Co. limited partnership
2008 – Relocation to Wuppertal
2017 – Reorganization of the shareholder structure
2018 – Successful certification according to IATF 16949:2016

35 employees (thereof 23 in production)
15.00o m² area, of which 5.000 m² production area

Turnover 2016: EUR 7 million
Export share 2016: 17% of exports

Certified according to IATF 16949

Cold forming with multi-stage presses (up to 5 stages)
Pressing forces up to 1.300 kn
Material: Steel, stainless steel, non-ferrous metals
Wire diameter: 3 – 16 mm
Under head length: up to 130 mm
Head diameter: up to 30 mm

Material:
Steels from magnetically soft iron to high-grade structural steels, stainless and rust-resistant stainless steels, aluminium alloys, non-ferrous metals

Machining
Machining further processing such as
– Cutting internal thread
– Turning, drilling, milling etc.
Complex turning geometries via rotary indexing and cam-controlled automatic lathes

Further processing
Chipless further processing such as
– Thread and profile rolling
– Finest cleaning, vibratory finishing, sorting, packaging
Surface and heat treatment by external partners

GMAK customers work in the following areas
– Automotive and supply industry
– Mechanical and plant engineering
– Electrical engineering
– Plastics technology
– Building and furniture fittings
– Sport and leisure sector

GMAK combines the advantages of two technologies, cold forming and turning, – to produce to use saving potentials and
– develop the most economical solution.

What customers value about GMAK?
– Experience
– Modern finite simulation technology (2D and 3D)
– Speed
– Flexibility