
Electromagnetic clutches, forming tools for the automotive industry and precision manufacturing from Ravensburg
Erwin A. Lang GmbH & Co. KG
Ravensburg (DE) · USA · Mexico · Brazil · India · ChinaNew on Amplifa
About Erwin A. Lang
Erwin A. Lang GmbH & Co. KG was founded in 1946 in Ravensburg as a small craft business and has developed into an internationally active, owner-managed technology provider. The company manufactures electromagnetic clutches – including compressor, fan, pump and centrifugal clutches with transmissible torques up to 1500 Nm – which drive, among other things, air conditioning systems of coaches, commercial vehicles, municipal vehicles, refrigerated transporters and fan drives of diesel engines. In addition, LANG designs and manufactures forming tools for chipless sheet metal forming of body components; main customers are AUDI, BMW, Mercedes-Benz and Volkswagen. The range of services includes feasibility studies, process planning, forming simulation, tool design (large tools, tool sets for high-speed servo presses, prog-die tools), kinematics analysis as well as post-engineering with Q-Loop improvement. In addition, the company manufactures and assembles pilot series, individual parts, fixtures and complex assemblies for machining technology using modern CAD/CAM, CNC, CAQ and CIM technology. The headquarters in Ravensburg is the center for development, production for the European magnetic clutch market and international sales; subsidiaries in the USA, Mexico, Brazil, India and China serve their regional markets. In total, LANG supplies more than 210 customers in 56 countries.
- Site
- Ravensburg
- Processes
- Manufacture of electromagnetic clutches (compressor, fan, pump, centrifugal clutches), Sheet metal forming / forming technology tools, Tool design / Die Design (large tools, tool sets for high-speed servo presses, prog-die tools), Form simulation, kinematics analysis, feasibility study, process planning, post-engineering, Precision manufacturing (pilot series, individual parts, fixtures and assemblies, complex, Assembly of complex assemblies, Magnetic clutches (compressor, fan, pump, friction clutches), Forming technology
- Materials
- Electromagnetic clutches, Body sheet metal, CAD/CAM/CNC/CAQ/CIM
- Certificates
- ISO 9001, IATF 16949
- Founded
- 1946
- Industries
- Coach industry (air conditioning), Commercial vehicles, Municipal vehicles, Refrigerated transport, Diesel engines/generator sets, Automotive (sheet metal forming)
- 01
Engineering (feasibility study, process planning, forming simulation)
- 02
Tool design / Die Design
- 03
Tool manufacturing (CAD/CAM/CNC)
- 04
Forming technology / sheet metal forming
- 05
Magnetic clutch production
- 06
Assembly of complex assemblies
- 07
Post-engineering (Q-Loop, compensation)
- 08
International sales
Processes & Materials
Electromagnetic clutches
Compressor, fan, pump and centrifugal clutches up to 1500 Nm for mobile applications.
Body sheet metal
Materials of chipless sheet metal forming for exterior skin and structural components in vehicle construction.
CAD/CAM/CNC/CAQ/CIM
Seamless digital process chain from design to manufacturing and quality assurance.
Locations

Ravensburg
DEHeadquarters: development, international sales, production for the European magnetic clutch market.
- Materials
- Magnetic clutches, forming tools, precision parts
- CAD/CAM (CATIA V5, Siemens NX)
- CNC manufacturing
- CAQ/CIM
USA
USSubsidiary: local sales and production for the regional market
Mexico
MXSubsidiary: local sales and production for the regional market
Brazil
BRSubsidiary: local sales and production for the regional market
India
INSubsidiary: local sales and production for the regional market
China
CNSubsidiary: local sales and production for the regional market
Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of electromagnetic clutches (compressor, fan, pump, centrifugal clutches)Assembly | – | – | – | – | – |
| Sheet metal forming / forming technology toolsForming | – | – | – | – | Sheet metal (body sheet) |
| Tool design / Die Design (large tools, tool sets for high-speed servo presses, prog-die tools)Engineering | – | – | – | – | – |
| Form simulation, kinematics analysis, feasibility study, process planning, post-engineeringEngineering | – | – | – | – | – |
| Precision manufacturing (pilot series, individual parts, fixtures and assemblies, complexMachining | – | – | – | – | – |
| Assembly of complex assembliesAssembly | – | – | – | – | – |
Additional services
Reference customers
Quality
LANG works with seamless processes from CAD, CAM, CNC, CAQ and CIM through to the Continuous Improvement Process; certificates are not listed on the website.
| Evidence | Ravensburg |
|---|---|
| ISO 9001 | |
| IATF 16949 |
History
- 1946
Founded as a small craft business in Ravensburg.
Development into an internationally active, owner-managed technology provider; engineering partner to renowned German automobile manufacturers for almost 40 years.