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In the course of the restructuring of the Thielenhaus Group Zahnradwerk Köllmann GmbH, belonging to the group since 1955, was integrated under the divisions Koellmann Gear and Koellmann Airtec into Thielenhaus Technologies GmbH in October 2002.
Over several decades Koellmann Gear developed into a global player within the field of gear boxes for special drives.
The demands for ever higher loads at longer life with technologically innovative gear boxes is met by Koellmann through its engineering and its experience to the utmost satisfaction of its customers. Since the early 60ies Koellmann Airtec has been supplying the highly demanding market for fettling machines with its diaphragm compressors.
The products „HANDY K2“ and „HANDY K1“ feature good manageability, maintainability, and last but not least the possibility of producing oil-free compressed air and are a much sought after proprietary brand in many fields of industry.
Koellmann is your partner in the field of drive components and compressor technology supplying both customized and off-the-shelf solutions.

NOVA WERKE AG is a Swiss technology company with its head office in Effretikon and subsidiaries in France and Germany.
The company develops and manufactures products under the brand name NOVA SWISS in four lines or business divisions: High Pressure Technology, Engine Components, Surface Technology, and Valve Service.
Our comprehensive service range and innovative high-tech components and processes are designed for demanding applications and meet rigorous requirements for quality, reliability, standardization and safety.
NOVA SWISS is the globally recognized, registered brand of NOVA WERKE AG.