About us


About Us

WELTER zahnrad, Lahr / Germany

Spirotec, Valff / France

Spirotec, Valff / France

CAVEX, Ofterdingen/Germany

WELTER zahnrad China, Lishui, Nanjing / China

WELTER zahnrad China works, Lishui, Nanjing / China

Welter zahnrad is the leading supplier for innovative drive systems. With our gear wheel production we are specialised in the production of single parts and small series. More than 75 years of experience in the drive engineering and gear manufacturing industry is the key of our success.

WELTER zahnrad GmbH in Lahr / Black Forest was founded in 1946 and is a leading manufacturer of bevel gears up to 3 m in diameter as well as spur gears, ring gears, worms and worm gears, gear couplings and other toothed parts. Our 130 employees at WELTER zahnrad GmbH and at Spirotec S.A.R.L in Valff / France, a 100% subsidiary, manufacture high-precision gears – mostly according to customer drawings – and according to the highest standards and detailed specifications. The quality features are carefully determined and are traceable from the forge through processing and heat treatment to delivery to the customer. At CAVEX GmbH & Co. KG in Ofterdingen, a subsidiary with a majority shareholding, almost 30 employees sell, develop, assemble and deliver worm gears with the superior CAVEX® hollow flank geometry. In the plant in Lishui District of  Nanjing in China, WELTER zahnrad CHINA currently has 35 employees selling the entire WELTER product portfolio in industries such as marine, mining, cement and general gear manufacturing.
The gears from WELTER zahnrad are used worldwide in various demanding applications: cement, mining, oil & gas, energy, shipbuilding, rail technology, aviation technology, steel, chemical, sugar industry and construction, tool, packaging or agricultural machinery, among others. Our qualified employees implement the latest findings in development and production. We are internationally certified according to the ISO 9001: 2008 series of quality management standards. Likewise according to the extended standard EN 9100: 2009 for the special quality requirements in aviation. The experienced application engineers can use extensive software packages to help design the gearbox at the customer’s facility or to carry it out completely. WELTER zahnrad supplies in-house developed individual parts, wheel sets, complete inner part sets (e.g. vertical mills or locomotive drives) up to complete gear units (shredders, conveyor belts, pumps, cement mills, conveyor baskets).
In addition to the use of production capacity, WELTER zahnrad has systematically taken steps towards becoming a service provider for drive technology by setting up the development and application technology departments. Support of customers in the production-oriented and application-oriented design of the gears (material selection, hardening process, dimensioning, tolerances). Support and implementation of service tasks up to condition monitoring. Spare parts production, increasing the availability of customer systems. Reengineering through to the production of entire gearboxes. Development and construction of complete gearboxes. The WELTER zahnrad Integrated Service Approach achieves maximum benefit to the end customer with an approach that is adapted to requirements. This is made possible by clear sales structures: in Germany and neighboring countries by our own sales engineers and overseas by application-oriented representatives.