Welcome to Koellmann Gear & Airtec

Koellmann Gear & Airtec covers two different product areas with two diverse business units. Thereby all our products are standing for high quality standards.


Precision and the highest quality are central properties of the products of Koellmann Gear & Airtec since more than hundred years. We have developed from a precision gearwheels manufacturer to a specialist for customized gear boxes as well as membrane compressors and vacuum generators.

In order to provide an optimum of support from projecting to service to our customers, we provide the complete value chain for both product areas, each in a separate division: Koellmann Gear (drive components) and the Koellmann Airtec (compressors).

Here we present the program of both businesses and acquaint you with our parent company Thielenhaus Technologies GmbH. We inform you about the fields of applications of our gears and compressors as well as new series and interesting specific application examples.

If you wish further information about our company, our products, and our service: Contact us and ask for more information!


Our 24/7-Hotline ensures prompt help or at least a prompt and competent answer to your distress call.We offer service tailored to our customers’ needs!
Please contact us.


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