Rotary unions and CNC turning and milling parts in 3- and 5-axis machining, certified to DIN EN ISO 9001:2015.
Klein GmbH
Wertheim (Baden-Württemberg)New on Amplifa
About Klein GmbH
Klein GmbH, based in Wertheim, has been developing and manufacturing rotary unions as well as CNC turning and milling parts to customer drawings since 1963. With 15 CNC machining centers in 3- and 5-axis technology and approximately 1,800 m² of production space, turned parts up to Ø 300 mm and milled parts up to 400 × 1,000 mm are produced – from prototype to series production. The special expertise includes explosion-proof components (ATEX compliant) as well as rotary unions in four series with 1 to 8 channels, up to 30 bar, 110 °C and 2,500 rpm. The value chain includes CAD design, CAM programming, heat treatment, galvanic and chemical surface finishing, and assembly of assemblies up to 1 m³ in volume. Materials used are stainless steel, aluminum, titanium, brass and plastics. Customers come from mechanical engineering, apparatus engineering, automotive, automation technology and other industries; deliveries are made worldwide.
- Site
- Wertheim
- Processes
- CNC turning (contract manufacturing), CNC milling (3- and 5-axis machining), Rotary unions (4 series, 1–8 channels), CAD design (concept, design and detailing work), CAM programming (simulation-supported), Prototype construction (turned and milled parts to drawing/CAD model), Assembly / sub-assembly assembly (mechanical, pneumatic, hydraulic), Galvanic and chemical surface finishing, coating technology (as additional
- Materials
- Stainless steel, Aluminum, Titanium, Brass, Plastics, CNC turning and milling (3- and 5-axis), CAD design & CAM programming, Manufacturing of explosion-proof components (ATEX compliant)
- Certificates
- ISO 9001:2015 (DIN EN ISO 9001:2015), ISO 9001
- Founded
- 1963
- Employees
- 20
- Industries
- Mechanical engineering, Apparatus engineering, Automotive, Automation technology, Machine tools, Paper and printing industry
- 01
CAD design
- 02
CAM programming
- 03
CNC turning
- 04
CNC milling
- 05
Heat treatment / surface finishing
- 06
Assembly / sub-assembly assembly
- 07
Inspection and packaging
- 08
Logistics/shipping
Materials & Processes
Stainless steel
For turned and milled parts as well as rotary unions, also explosion-proof (ATEX).
Aluminum
Lightweight components in contract manufacturing and for rotary unions.
Titanium
High-strength material for demanding turned and milled parts.
Brass
Easily machinable material, among other things for rotary unions.
Plastics
For turned and milled parts as well as components via plastic injection molding partnerships.
CNC turning and milling (3- and 5-axis)
Machining of single parts through series production on 15 machining centers.
CAD design & CAM programming
Simulation-supported programming and design from concept to production model.
Manufacturing of explosion-proof components (ATEX compliant)
Special expertise since 2008 for safety-relevant components.
Site
Wertheim
DEHeadquarters, production
- Part weight / size
- Turning Ø 2–300 mm, milling up to 400 × 1,000 mm
- Lot size
- Single parts, small series, series production
- Materials
- Stainless steel, aluminum, titanium, brass, plastics
- 15 CNC turning and milling machining centers (3- and 5-axis)
- Spinner milling machines (from 2022)
- CNC production lathes
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC turning (contract manufacturing)Machining | – | – | Ø 2–300 mm | Single parts – Series production | Stainless steel, Aluminum, Titanium, Brass, Plastics |
| CNC milling (3- and 5-axis machining)Machining | – | 1,000 mm × 400 mm | – | Single parts – Series production | Stainless steel, Aluminum, Titanium, Brass, Plastics |
| Rotary unions (4 series, 1–8 channels)Joining | – | – | up to 30 bar, up to 110 °C, up to 2,500 | – | Stainless steel, Titanium, Brass |
| CAD design (concept, design and detailing work)Engineering | – | – | – | – | – |
| CAM programming (simulation-supported)Engineering | – | – | – | – | – |
| Prototype construction (turned and milled parts to drawing/CAD model)Machining | – | – | – | Single piece – Small series | Stainless steel, Titanium, Aluminum, Brass, Plastics |
| Assembly / sub-assembly assembly (mechanical, pneumatic, hydraulic)Assembly | – | Assemblies up to 1 m³ volume | – | – | – |
| Galvanic and chemical surface finishing, coating technology (as additionalSurface | – | – | – | – | – |
| Heat treatment (mentioned as additional machining option)Heat treatment | – | – | – | – | – |
| Engraving and laser markingSurface | – | – | – | – | – |
| Manufacturing of explosion-proof components (ATEX compliant)Machining | – | – | – | – | – |
| Knowledge/cooperation in casting, extrusion and plastic injection molding for componentCasting | – | – | – | – | Plastics |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC machining centers (turning and milling, 3- and 5-axis) | – | 15 | Turning Ø 2–300 mm; milling up to 400 × 1,000 mm | – | Wertheim |
| Milling machines | Spinner | – | – | 2022 | Wertheim |
| CNC production lathe | – | – | – | 1977 (erst | Wertheim |
Additional services
Quality
Every rotary union delivered is tested prior to shipment using the maximum values of pressure and rotational speed. The quality management system is certified to DIN EN ISO 9001:2015 by TÜV Rheinland Cert GmbH.
| Evidence | Wertheim |
|---|---|
| ISO 9001 |
Company History
- 1963
Founded by Ernst Klein in Wertheim with the development and production of rotary unions and pneumatic cylinders.
- 1972
Construction begins on the new company building at today's location.
- 1973
Relocation to the new company building in Wertheim.
- 1977
Investment in the first CNC production lathe.
- 1978
Expansion of the CNC machine park and entry into complex contract manufacturing.
- 1982
Leadership transition to the second generation: Friedhelm Klein and Karin Kunkel.
- 1990
Construction of the production hall with over 1,800 m² of production space.
- 2000
First investments in the partial automation of processes.
- 2005
TÜV certification to DIN/ISO 9000.
- 2008
Start of manufacturing explosion-proof components (ATEX compliant); initial ISO 9001 certification.
- 2019
Transition of managing partners to the third generation.
- 2022
Acquisition of Spinner milling machines.
- 2023
Modernization of internal IT systems and brand identity.