CNC component manufacturing and precision tools – milling, turning, grinding, hardening up to 500 kg
Johne & Co. Präzisionswerkzeuge GmbH
Dorsten (Köhler Straße 41-43)New on Amplifa
Precision on two pillars: components and tools
Johne & Co. Präzisionswerkzeuge GmbH in Dorsten is a service provider for contract CNC component manufacturing as well as a manufacturer of its own precision tools. Its manufacturing scope includes CNC milling (4- and 5-axis), CNC turn-mill machining, internal, external, surface and profile grinding, EDM (electrical discharge machining) and induction hardening. Materials machined include structural steel, stainless steel, aluminium, grey, ductile and cast steel alloys as well as rust-resistant and acid-resistant steels; a specialisation lies in heat-, acid- and pressure-resistant materials. Prototypes and series production are realised in lot sizes from 100 to 500,000 pieces with workpiece weights up to 500 kg. The tool division offers the MicroCut™ series (Innovation Line), tool holders and fine boring tools (Standard Line) as well as special tools. The portfolio is rounded off by engineering, sub-assembly pre-assembly including functional testing, test machining and inspection services in climate-controlled measuring rooms. Customers come from the automotive and aerospace industries as well as mechanical engineering and agricultural machinery; deliveries are made throughout Europe.
- Site
- Dorsten
- Processes
- CNC component manufacturing (milling), CNC turning (4- and 5-axis turn-mill machining centres), Grinding (internal, external, surface and profile grinding), EDM (electrical discharge machining), Induction hardening, Marking, deburring, assembly (special systems), Sub-assembly pre-assembly incl. functional testing, Engineering: production strategy, equipment procurement, machining trials/test machining
- Materials
- Structural steel, Stainless steel, Rust- and acid-resistant steels, Heat-, acid- and pressure-resistant materials, Aluminium, Grey cast iron alloys, Ductile cast iron alloys, Cast steel alloys
- Certificates
- ISO 9001:2015
- Industries
- Automotive industry, Aerospace industry, Mechanical engineering, Agricultural machinery engineering, Metal-cutting industry
- 01
Engineering/production strategy
- 02
CNC milling and turning
- 03
Grinding
- 04
Induction hardening
- 05
Marking/deburring
- 06
Pre-assembly incl. functional testing
- 07
Measurement inspection
- 08
Delivery
Materials and processes
4- and 5-axis CNC machining centres
Machining of complex parts made of steel, stainless steel, aluminium and cast alloys.
5-axis CNC turn-mill machining centres
Turn-mill machining of precision rotational parts up to 500 kg workpiece weight.
Internal, external, surface and profile grinding
Fine machining for maximum dimensional and form accuracy.
Electrical discharge machining (EDM)
Contour generation in difficult-to-machine materials.
Induction hardening
Targeted hardening of functional surfaces directly in the production chain.
Structural steel
Standard material for highly stressed machine components.
Stainless steel and rust- and acid-resistant steels
For components exposed to corrosion and chemicals.
Heat-, acid- and pressure-resistant materials
Focus of machining for demanding applications.
Aluminium
Lightweight components with excellent machinability.
Grey, ductile and cast steel alloys
Machining of cast parts such as gearbox housings.
Fine boring tools (MicroCut™, Standard Line)
In-house tools with tolerances of 0.01 mm and 0.002 mm.
Sites
Dorsten
DEHeadquarters and manufacturing
- Part weight / size
- up to 500 kg workpiece weight
- Lot size
- 100–500.000 pieces
- Materials
- Structural steel, stainless steel, aluminium, grey, ductile and cast steel
- 4- and 5-axis CNC machining centres
- 5-axis CNC turn-mill machining centres
- Internal, external, surface and profile grinding machines
- Induction hardening machines
- CNC coordinate measuring machines
- Contour measuring devices
- Special systems for marking, deburring, assembly
Components and tools
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC component manufacturing (milling)Metal cutting | – | – | 500 kg | 100 – 500,000 pieces | Structural steel, Stainless steel, Aluminium, Grey cast iron, Ductile cast iron, Cast steel alloys, Rust- and acid-resistant steels, Heat-, acid- and pressure-resistant materials |
| CNC turning (4- and 5-axis turn-mill machining centres)Metal cutting | – | – | 500 kg | 100 – 500,000 pieces | Structural steel, Stainless steel, Aluminium, Grey, ductile and cast steel alloys, Rust- and acid-resistant steels, Heat-, acid- and pressure-resistant materials |
| Grinding (internal, external, surface and profile grinding)Metal cutting | – | – | – | – | – |
| EDM (electrical discharge machining)Metal cutting | – | – | – | – | – |
| Induction hardeningHeat treatment | – | – | – | – | – |
| Marking, deburring, assembly (special systems)Assembly | – | – | – | – | – |
| Sub-assembly pre-assembly incl. functional testingAssembly | – | – | – | – | – |
| Engineering: production strategy, equipment procurement, machining trials/test machiningEngineering | – | – | – | – | – |
| Inspection: CNC coordinate measuring machines, contour measuring devices, SPC, measuring equipmentInspection | – | – | – | – | – |
| Precision tool manufacturing (fine boring tools, fine boring head, fine boring bar, tool holders,Metal cutting | 0.01 mm / 0.002 mm (product variants) | – | – | – | – |
8 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 4-axis CNC machining centre | – | – | – | – | Dorsten |
| 5-axis CNC machining centre | – | – | – | – | Dorsten |
| 5-axis CNC turn-mill machining centre | – | – | – | – | Dorsten |
| Internal, external, surface and profile grinding machines | – | – | – | – | Dorsten |
| Induction hardening machines | – | – | – | – | Dorsten |
| CNC coordinate measuring machines | – | – | – | – | Dorsten |
| Contour measuring devices | – | – | – | – | Dorsten |
| Special systems for marking, deburring, assembly | – | – | – | – | Dorsten |
Additional services
Quality management
In climate-controlled measuring rooms, CNC coordinate measuring machines, contour measuring devices, statistical process control (SPC) and measuring equipment monitoring provide evidence of highly precise manufacturing results. Ongoing internal and external audits accompany the quality management.
| Evidence | Dorsten |
|---|---|
| ISO 9001:2015 |
Company history
- 2007
Initial certification according to ISO 9001 (TÜV Rheinland)
- 2025
Recertification according to ISO 9001:2015, valid until 18.04.2028