About us

BüMi – 97 years of precision

Langwellen
BüMi specialises in the machining of customer-specific workpieces and assemblies – we turn, mill, harden and grind sophisticated parts from almost all metallic materials according to drawings, standards or samples.
Our aim is to continuously fulfil the highest quality requirements in a cost-effective manner. The satisfaction of our customers on the basis of trusting co-operation has been the foundation of our successful development for over 97 years.

To achieve this, we rely on qualified employees and modern production facilities in a highly professional yet social environment.

The components we manufacture can be found in wind power plants and turbines, in pumping stations and large gearboxes, in rail vehicles and ships, in presses, packaging machines and rolling stands for sheet metal processing … in short – in machines and industrial plants where quality and safety are vital.

Langwellen

Further information on BüMi

Eingangsbereich BüMi Gebäude
Founded in Ennepetal, North Rhine-Westphalia, in 1927, BüMi Präzisionszerspanung GmbH & Co. KG has been family-owned for several generations.
The company has never stopped evolving.

A new production and administration building was opened in 2007, while a substantial new hall was added in late 2010.
This provides the company with 6,500 m2 of production space for continuous shift operation involving around 75 employees.
The company’s state-of-the-art fleet of machinery can handle all manner of different machining tasks and ensures a high level of vertical integration and flexibility.

At roughly 20,000 m2 in size, the company’s premises in Gevelsberg offer ample space for further expansion.

Eingangsbereich BüMi Gebäude