
Metrology, runout testing devices and CNC machining: engineering, manufacturing, assembly and inspection services from Bad Dürrheim.

Ke-Ma-Tec GmbH
Bad Dürrheim (Schwenninger Str. 8)New on Amplifa
About Ke-Ma-Tec
Ke-Ma-Tec GmbH (Ketterer-Maschinen-Technologie) in Bad Dürrheim continues the decades-long trade partnerships and engineering of the former Seibold + Ketterer GmbH and Ketterer Maschinenbau GmbH. The company manufactures and sells modular measuring and testing devices for runout, axial runout, angle, length and diameter inspections as well as T-slot plates and accessories for lathes and sliding-headstock automatic lathes (including Tornos-Bechler). In addition, the company offers CNC and conventional machining: 5-axis milling, turning, surface and cylindrical grinding of prototypes and small series in steel, aluminium, stainless steel, non-ferrous metals and plastics. The portfolio is complemented by engineering with FEA analyses, software development, prototype construction, assembly of assemblies up to 3000 x 3000 mm on a granite plate, as well as repair service for measuring devices and spindle assemblies. As an authorized specialist distributor of Mitutoyo, the company also sells measuring devices and offers technical seminars and rental equipment. Customers come predominantly from machine tool manufacturing, mechanical engineering and testing and metrology.
- Site
- Bad Dürrheim
- Processes
- 5-axis milling with zero-point clamping system, Conventional milling operations, CAD/CAM programming (SolidWorks / SolidCAM), Surface grinding, Cylindrical grinding, Turning (CNC and conventional), Assembly and assemblies, Surface, heat treatments and coatings (external partners)
- Materials
- Steel, Aluminium, Stainless steel, Non-ferrous metals, Plastics, T-slot plates made of steel, Runout and angle measuring module MRW, Centric roller module ZRM
- Certificates
- Mitutoyo partnership (authorized specialist distributor)
- Industries
- Machine tool manufacturing, Mechanical engineering, Testing and metrology, Lathe/sliding-headstock automatic lathe users
- 01
Engineering and design (CAD/CAM, FEA)
- 02
CNC/conventional machining
- 03
Grinding
- 04
Surface and heat treatment (external partners)
- 05
Assembly and assembly alignment
- 06
Quality monitoring and part inspection
- 07
Service, repair and technical seminars
Materials & Processes
Steel
Material for milled, turned and ground parts as well as ground T-slot plates.
Aluminium
Lightweight metal for milled, turned and surface-ground parts.
Stainless steel
Corrosion-resistant material for machining and cylindrical grinding.
Non-ferrous metals
e.g. brass/copper for milled and turned parts.
Plastics
For milled and turned parts for technical applications.
Runout and angle measuring module MRW
Universal module for runout, roundness and angle measurement with interchangeable inserts.
Centric roller module ZRM
Flexible runout module with scissor mechanism for workpieces Ø 1–100 mm up to 40 kg.
Universal, axial runout and runout testing devices Heavy-Line
Testing devices for workpieces up to 3000 kg, Ø 250 mm and 6000 mm length.
Universal modular measuring devices KEMACHECK
Combinable length, diameter and runout inspections.
Locations

Bad Dürrheim
DEHead office with manufacturing, assembly, metrology and engineering
- Part weight / size
- Testing devices for workpieces up to 3000 kg
- Lot size
- Milling 1–1000; grinding/turning 1–50
- Materials
- Steel, aluminium, stainless steel, non-ferrous metals, plastics
- 5-axis milling machine with zero-point clamping system (500 x 500 x 500 mm)
- Surface grinding machine (600 x 350 x 375 mm)
- Cylindrical grinding machine (Ø200 x 350 mm)
- CNC and conventional lathe (Ø200 x 750 mm)
- Granite plate 3000 x 3000 mm for assembly alignment
- Straightening presses
- Tactile and optical measuring devices (Mitutoyo)
Parts & Products




Inside the production







Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| 5-axis milling with zero-point clamping systemMachining | – | 500mm × 500mm × 500mm | – | 1 – 1000 | Steel, Aluminium, Stainless steel, Non-ferrous metals, Plastics |
| Conventional milling operationsMachining | – | 500mm × 500mm × 500mm | – | 1 – 1000 | Steel, Aluminium, Stainless steel, Non-ferrous metals, Plastics |
| CAD/CAM programming (SolidWorks / SolidCAM)Engineering | – | – | – | – | – |
| Surface grindingMachining | – | 600mm × 350mm × 375mm | – | 1 – 50 | Steel, Aluminium, Stainless steel |
| Cylindrical grindingMachining | – | 350mm | – | 1 – 50 | Steel, Stainless steel |
| Turning (CNC and conventional)Machining | – | 750mm | – | 1 – 50 | Steel, Aluminium, Stainless steel, Non-ferrous metals, Plastics |
| Assembly and assembliesAssembly | – | 3000mm × 3000mm | – | – | – |
| Surface, heat treatments and coatings (external partners)Surface | – | – | – | – | – |
| Measuring and testing technology / measuring automation (tactile and optical metrology, runout,Inspection | – | – | – | – | – |
| Engineering, design and development including simulations and FEA analysesEngineering | – | – | – | – | – |
| Prototype constructionAssembly | – | – | – | – | – |
| Repair and refurbishment of measuring devices as well as slide and spindle assembliesAssembly | – | – | – | – | – |
| Jig and fixture buildingAssembly | – | – | – | – | – |
| Software development and automation technologyEngineering | – | – | – | – | – |
12 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Granite plate for assembly alignment (3000 x 3000mm) | – | 1 | 3000 x 3000mm | – | Bad Dürrheim |
| Straightening presses | – | – | – | – | Bad Dürrheim |
| Tactile and optical measuring devices (Mitutoyo) | Mitutoyo | – | – | – | Bad Dürrheim |
| Modular runout and angle measuring module (MRW) | Ke-Ma-Tec MRW | – | – | – | Bad Dürrheim |
| Centric roller module (ZRM) | Ke-Ma-Tec ZRM | – | Workpiece Ø 1-100mm, Ø3-63mm at constant workpiece center height, max. workpiece weight 40kg | – | Bad Dürrheim |
| Universal, axial runout and runout testing devices Heavy-Line series | Ke-Ma-Tec Heavy-Line | – | Workpieces up to 3000kg, Ø up to 250mm, maximum length 6000mm | – | Bad Dürrheim |
| Laser linear table with 10mm T-slot | Ke-Ma-Tec Laser-Lineartisch | – | – | – | Bad Dürrheim |
| KEMACHECK universal modular measuring devices (length, diameter, runout) | Ke-Ma-Tec KEMACHECK | – | – | – | Bad Dürrheim |
| 5-axis milling machine with zero-point clamping system | – | – | 500 x 500 x 500mm | – | Bad Dürrheim |
| Surface grinding machine | – | – | 600 x 350 x 375mm | – | Bad Dürrheim |
| Cylindrical grinding machine | – | – | Ø200 x 350mm | – | Bad Dürrheim |
| CNC lathe / conventional lathe | – | – | Ø200 x 750mm | – | Bad Dürrheim |
Additional services
Reference customers
Quality
Quality monitoring is carried out on the shop floor with tactile and optical measuring devices from Mitutoyo as well as in-house runout, axial runout and length testing devices; assemblies are aligned and inspected on a 3000 x 3000 mm granite plate.
| Evidence | Bad Dürrheim |
|---|---|
| Mitutoyo partnership (authorized specialist distributor) |
History
Continuation of the decades-long trade partnerships and the engineering of the former Seibold + Ketterer GmbH and Ketterer Maschinenbau GmbH by Karl and Prof. Dr.-Ing. Gunter Ketterer at the original Bad Dürrheim site