Koellmann Gear (part of Thielenhaus Technologies) dates back to 1904 and has grown into a global specialist in industrial gear technology. Their roots began in Leipzig, where they produced precision gear wheels, bevel gears, and automotive components; later, they consolidated operations in Wuppertal under the Thielenhaus umbrella. Today, they serve markets worldwide through plants in Germany, the U.S., and China.

Koellmann’s product range covers a broad spectrum of gear solutions: extruder gearboxes, injection molding gearboxes, industrial and test-stand gearboxes, saw and shredder gearboxes, mixer drives, oil press systems, and many custom or special designs. Their reputation rests on precision, durability, and adaptability, producing both standard and tailored gear units to meet diverse industrial demands.