CEMEC develops and manufactures precision components and assemblies in the µm range, from prototype to cleanroom series production.
CEMEC GmbH
Spalt (headquarters)New on Amplifa
About CEMEC
CEMEC GmbH is a development and manufacturing company for highly precise mechanical components and assemblies based in Spalt in Middle Franconia. The company combines engineering, precision machining and mould making: based on drawings or CAD data, components with tolerances down to 2 µm are designed, manufactured, validated and produced in series. The contract manufacturing includes 5-axis precision milling on KERN MicroHD machines, including hard machining of materials such as titanium, ceramics and copper from solid stock. The mould making division produces injection and die casting moulds for plastics, zinc, aluminium and ceramics, including quick-change moulds. Assembly of complete assemblies is also carried out in the company's own ISO class ISO 7/5 cleanroom. Customers include companies from medical technology, aerospace, optomechanics, research and drive technology, including projects such as the Rosetta manipulator for the ESA mass spectrometer COSIMA.
- Site
- Spalt
- Processes
- 5-axis precision milling (hard machining, mirror-finish milling), Mould making for injection and die casting (including quick-change moulds), Injection mould design and production, Engineering & development (DfM optimisation, prototyping, transfer to series production), Assembly of complete assemblies, also in the cleanroom (ISO 7/5), Validation & measurement with measurement/inspection reports, Drive and positioning systems (µm precision, ROTAPOD 6-axis manipulator), Engineering & manufacturing (DfM optimisation)
- Materials
- Titanium, Ceramics (including ceramic implants), Plastics, Zinc, Aluminium, Copper (resonant circuit coil), Ceramics, Copper
- Certificates
- ISO-certified quality management, ISO 7/5 cleanroom, Cleanroom ISO 7/5, Aerospace qualification (Biolab), Measurement reports per series
- Founded
- 1986
- Employees
- 26
- Industries
- Medical technology, Aerospace, Optomechanics, Mould making, Research & laboratory, Drive technology / mechatronics
- 01
Engineering & DfM optimisation
- 02
Prototyping / first samples
- 03
CNC programming
- 04
5-axis precision machining
- 05
Mould making
- 06
Validation & measurement with measurement reports
- 07
Cleanroom assembly
- 08
Series production
Materials & Processes
Titanium
Precision machining of hard materials for medical technology and aerospace.
Ceramics
Machining of ceramic components, including ceramic implants, with advisory support for realisation.
Aluminium
Used in mould making and precise lightweight components.
Copper
Machining from solid stock, e.g. resonant circuit coils with 3 µm dimensional accuracy in mirror-finish milling.
Zinc
Material for injection and die casting moulds as well as quick-change moulds.
Plastics
Mould making and injection mould design for series products.
Site
Spalt
DEHeadquarters, development, manufacturing, ISO cleanroom (ISO 7/5)
- Lot size
- Prototype, first samples, series
- Materials
- Titanium, ceramics, aluminium, copper, zinc, plastics
- 2× KERN MicroHD 5-axis precision milling machine (2019 and 2024, the second one with robot)
- Robot cell as a high-performance CNC machining centre
- Climate-controlled room ± 1 °C
- ISO cleanroom ISO 7/5
- Measuring and testing equipment with measurement reports
Components & Projects
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Machining | 2 µm | – | – | Prototype/first samples – Series | Titanium, Ceramics, Hard materials |
| 5-axis precision milling (hard machining, mirror-finish milling)Machining | 3 µm · Mirror finish (for gold plating) | – | – | First samples – Series | Copper (resonant circuit coil from solid material), Hard materials |
| Mould making for injection and die casting (including quick-change moulds)Casting | – | – | – | – | Plastics, Zinc, Aluminium, Ceramics |
| Injection mould design and productionPlastics | – | – | – | – | Plastics, Zinc |
| Engineering & development (DfM optimisation, prototyping, transfer to series production)Engineering | – | – | – | – | – |
| Assembly of complete assemblies, also in the cleanroom (ISO 7/5)Assembly | – | – | – | Series | – |
| Validation & measurement with measurement/inspection reportsTesting | 1 µm (repeatability of positioning unit) | – | – | – | – |
| Drive and positioning systems (µm precision, ROTAPOD 6-axis manipulator)Engineering | 1 µm repeatability | – | – | Prototype – Series | – |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 5-axis precision milling machine | KERN MicroHD | 2 | – | – | Spalt |
Additional services
Reference customers
Quality & Certification
CEMEC works with ISO-certified quality management, an ISO class ISO 7/5 cleanroom and documented measurement and inspection reports for each component. For the Biolab microscope project, the company holds an aerospace qualification.
| Evidence | Spalt |
|---|---|
| ISO-certified quality management | |
| Cleanroom ISO 7/5 | |
| Aerospace qualification (Biolab) | |
| Measurement reports per series |
History
- 1986
Founded as an engineering office in Munich under the motto 'Intelligent Mechanics'
- 1993
Relocation to Franconia, near Nuremberg
- 1999
Registered as CEMEC Intelligente Mechanik GmbH
- 2001
New building in Spalt, workshop expansion
- 2016
Expansion to 850 m² of manufacturing space including an ISO cleanroom (ISO 7/5)
- 2019
First KERN MicroHD 5-axis precision milling machine
- 2021
Installation of a climate-controlled room (± 1 °C) for µm manufacturing
- 2024
Expansion of hard machining with a second KERN MicroHD with robot as a high-performance CNC machining centre