1919
Founding of the company A. + E. Keller by Anton and Ernst Keller in Arnsberg-Neheim (Schillerstraße)
1963
Commissioning of the first cold forming press in Arnsberg-Neheim
1969
50th company anniversary
1978
Relocation of the company to the industrial park in Arnsberg - Niedereimerfeld
2003
Establishment of the Keller Cold Forming Technologies site in Michigan and start of production in Belleville (USA)
2004
Establishment of the Singu Keller Cold Forming Parts joint venture in Beijing (China)
2013
Commissioning of the first servo-driven cold forming press in Arnsberg
2015
Expansion of machining capabilities at the Arnsberg site and integration of a new machining facility
2019
100th anniversary of A. + E. Keller
2022
Establishment of the second production facility, Tianjing Singu Keller Cold Forming Parts, in China to expand manufacturing capabilities in the areas of machining and further processing
2022
Expansion of production capabilities at the Arnsberg site and integration of a second plant focusing on assembly, testing, and packaging
2025
Constantin Guht joins the family business as the fourth generation
2025
Expansion of cold forming capabilities at the Arnsberg site with the integration of a new 6-stage forming press with 900 t pressing force
