The company

About Koellmann Gear

Since 1904, Koellmann Gear has stood for quality products with the highest standards. As a division of Thielenhaus Technologies GmbH, we combine cutting-edge innovations with our many years of experience in producing gears. In order to better serve our customers, we have consistently set the highest quality standards when it comes to the wide array of Koellmann gears in use around the globe.

About Koellmann

Today, Koellmann Gear is a global player in the area of gear technology for specialised drives. A central area of application is plastics processing. Koellmann Gear has an excellent reputation worldwide, in particular as a manufacturer of extruder gears. Additional areas of application include, among other things, process engineering as well as the textile and paper industries.

With its diaphragm compressors, Koellmann Airtec has been successfully serving the demanding market for plastering machines for about fifty years. These require compact, mobile compressors, which generate oil-free compressed air both cost-effectively and reliably. Moreover, these


Today’s Koellmann Gear Division of the Thielenhaus Group dates back to the Köllmann GmbH gear factory, which was founded in Leipzig in 1904. Originally producing precision gear wheels and specialising in bevel gears, in 1907, Köllmann became the first special factory to produce rear axles and change speed gears for the automotive industry. Köllmann also produced the gear cutting tools required for this work. In addition to the production of gears and tools in Leipzig, long milling machines were built in Langenberg. The company then moved its headquarters there after the end of the Second World War, before moving to Düsseldorf-Heerdt in 1951.